4T versus 2T...the "Cost" argument.

MX7MX
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7/14/2010 8:49pm
MX7MX wrote:
My yz450 went a total of 4 years till the day I sold it with ZERO problems, a friend bought it and rode it close to...
My yz450 went a total of 4 years till the day I sold it with ZERO problems, a friend bought it and rode it close to 2 years till he sold it with ZERO problems. Say what you want, but no 2 stroke I ever owned was that reliable. Maybe I'm one of the "lucky" ones. Either way, nostalgia is one thing if your just a die hard 2 stroke fanatic. I love my C6 Vette but other vette enthusiasts wouldn't own anything except the C3s and 4's. To each their own, but I'd buy and ride either bike. I just choose now not to dislike either one, because both have their place and both have that certain something that makes them appealing to an individual.



If I was buying a new bike tomorrow, it'd be a 4 stroke. Would I own a 2 stroke? Absolutely. Its all preference. Nostalgia plays the largest role in this for the majority. Some like the challenge of having to really "RIDE" the bike (2 stroke) and some like the ease of the bike doing most of the work (4 stroke). To each their own! I used to be the biggest anti-2stroke person on this board. Now I just accept each, as they both share the same quality....putting a smile on our faces, regardless of which makes you happier. If I can bury this argument, surely the rest of us can?
newmann wrote:
While the 450's have had some issues along the way, for the most part they usually are not the topic of catastrophic failure threads. 250F's on...
While the 450's have had some issues along the way, for the most part they usually are not the topic of catastrophic failure threads. 250F's on the other hand.....damn money pits there. About that Vette, you can slap a trick set of heads and other mods on it for less than having Pro-Circuit race prep a single 250F head. That doesn't compute with me.

My main complaint is with the double displacement advantage given to them (4 strokes) and even moreso, the elimination of the 125 class at the professional level. The disappearance of the 125 class has not been good for the sport.
You got that right newmann. I was thinking about Heads and cam and a dynotune for the car for roughly around 5.

I know what you mean about not computing, these works bikes for close to $100k when you can buy freakin HOUSES for the price of one!
mxb2
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7/14/2010 8:49pm Edited Date/Time 7/14/2010 8:50pm
I love both bikes, great in their own way, but everyone says they love the 2 stroke , how come they stopped selling them,(because no one was buying them) the motorcycle manufactures are in the business to make money, they will make what is selling. People complain about the 4 stroke but since they came out ther have been alot of thumpers sold. So i guess people need to buy more two strokes and thay will be made! So what if yamaha and ktm get all the business sooner or later kawy suzuki and honda will follow. those companies are nt gonna put them on the showroom if there not gonna sell. I love both bikes ride what makes you happy and don t bash anyone riding something you don t approve of. Last time i checked i bought my own bikes so why does anyone care what people ride or do to their bikes its their money. if they wanna ride it stock so be it if they wanna throw 10 grand into it who cares. That being said i better go get my bikes ready for this weekend 2007 yz250 smoker, and 09 rmz 450 both great bikes! BE SAFE ALL RIDE HARD RIDE STRONG
SteveS
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7/14/2010 8:53pm
It always comes back to this: The manufacturers wanted everybody to buy their new fourstrokes so they got the AMA and FIM to give the fourstrokes such a huge displacement advantage that anybody who wanted to win races had to go out and buy a fourstroke. Back about 2005 everybody believed that to have a chance of winning you had to have a fourstroke. So they quit buying two stroke bikes and everybody bought F's. Then a year or two later we all figured out we'd been had.
7/15/2010 1:12am Edited Date/Time 7/15/2010 1:29am
First off, if you take a look at motocross as a whole nobody can argue that a 4 choke is

1. Cheaper to build, and therefore purchase than a 2 smoke

2. Cheaper to maintain than a 2 smoke

3. Easier to maintain than a 2 smoke



I'm sure there's some guy that has owned a 4 choke for 10 years, rode it to the track uphill both ways in the snow and has only changed the oil in it twice since 2000 and railed the crap out of it every weekend since, and it's never broke. It's called a Honda Fourtrax folks. Cause there ain't nobody, and I mean nobody that has a 4 stroke motocross bike for 5 years and rides it routinely at any level above a beginner level that hasn't touched one of those farm tractors engines besides oil in it for five years and that pile hasn't grenaded. And if there is, please don't post it, just look in the mirror, you will fall a victim of Darwinism my friend, cause that babys gonna blow at the worst possible time. Then you can post about how you where stretchin out that throttle cable over the big "single" and she blew!



Sure smokers blow too, but, they are quick, cheap, and easy to fix.



Cost conversation is over. Not even die hard 4 strokers can argue expense. If they try just ask them what kind of grades they got in 5th grade math, cause my guess is they were held back and got to do that class twiceSmile



As for the rest of the debate, ask Mitch Payton if it were 250 vs 250 what his riders would be on that should answer your question on which is a better racing machine...



The only reason 4 chokes are competitive is because of a handicap (no secret). This all leads back to the cost. If you ever want to know why somebody does something, follow the money. The manufacturers said hey, if we start selling real complicated time bombs, people are dumb sheep that will buy whatever Stewy, Poto, and RC are riding. Then we will sell more parts, and make more money. So after a 400cc choker was winning races they got the AMA to change the rules which shut down a chance of a competitive race between the two. Problem is they miscalculated on there price points, oops. Economy tanks, people can't afford farm tractors anymore. So now you have empty gates even with 2 or 3 classes on the line where there used to be 2 heats for 1 class... But I digress.



Now you have tracks closing because of noise or empty pits on raceday. While I don't have any real problem with 4 strokes, fact is all the folks that lllooovvveeee the 4's, they will either wake up with the manufacturers and switch back and make the 4 stroke "nostalgic", or ride off in the sunset on there 4 along with the sport cause there will be nowhere to ride. There is your true "cost" of a 4 stroke.



And last but certainly not least, smokers are much more fun to ride. Besides 20 or so guys making an actual living riding these things, isn't that what it's all about?



Please tell me if I'm wrong.

The Shop

Bulldog
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7/15/2010 3:23am
"Castrol 4T
$4.29 (at Kragens)

Kawasaki 4T motor-oil
$5.48 (Kawi shop)

Honda 4T motor oil
$6.64 (Honda shop)

Motul 3000
$7.99 (Local "Tuner" Shop)

2 Stroke Trans-Oils:
(As mfg recm'd)

Honda HP Trans
$8.19 (Honda shop)

Bel-Ray Gear-Saver
$10.95 (Honda Sshop)"

Based on this pricing argument I am going out today and buy some 4T oil to put in my 2T to save some money!

Seriously though, expense is one thing when you look at the oils and parts. What about the time it takes. Under 2 hours if you take your time on a 2T to rebuild a top end. 4T? I think it would take me almost 2 hours to break the timing chain...
stuart70
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7/15/2010 5:29am
olds cool wrote:
Ask Mitch Payton about the cost comparison between the two. I remember reading an interview w/ him a while back and I don't remember the exact...
Ask Mitch Payton about the cost comparison between the two. I remember reading an interview w/ him a while back and I don't remember the exact figure but the 4t was multiple times more expensive to build and race than the 2t.
I remember hearing Mitch say something like that in the interview with Matthes a few weeks ago.
newmann
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7/15/2010 5:51am
Cost? Mail order internet price from Motosport.

PRO CIRCUIT STAGE 3 MODIFIED CYLINDER HEAD
(1 review) | write a review

Your Price: ($3004.99 - $3249.99)




newmann
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7/15/2010 5:59am
From Jegs mail order.

Edelbrock #350-2099
Power Package Top End Kit
1955-86 SB-Chevy 327-350
435 HP, 435 ft/lbs TQ

$1,839.99




7/15/2010 6:02am
you guys that are saying 4stroke are cheaper to buy and maintain are living in freaking la la land. but i imagine it makes you feel better about your purchase. keep your fingers crossed becuase you havn't been burned yet. anybody who comes on here and says my 4stroke is trouble free is just the same as telling everyone you cant twist the throttle very hard.
Cygnus
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7/15/2010 6:14am
mxpilot43 wrote:
you guys that are saying 4stroke are cheaper to buy and maintain are living in freaking la la land. but i imagine it makes you feel...
you guys that are saying 4stroke are cheaper to buy and maintain are living in freaking la la land. but i imagine it makes you feel better about your purchase. keep your fingers crossed becuase you havn't been burned yet. anybody who comes on here and says my 4stroke is trouble free is just the same as telling everyone you cant twist the throttle very hard.
You are half wrong. If I was riding an 06 2502T I would have done at least 4 top ends for the cost of 100 each. My 06 450 has never had a top end. Only oil changes and air filters.
Crush
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7/15/2010 6:18am
[embed][/embed]
seth505
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7/15/2010 6:55am Edited Date/Time 7/15/2010 6:56am
mxpilot43 wrote:
you guys that are saying 4stroke are cheaper to buy and maintain are living in freaking la la land. but i imagine it makes you feel...
you guys that are saying 4stroke are cheaper to buy and maintain are living in freaking la la land. but i imagine it makes you feel better about your purchase. keep your fingers crossed becuase you havn't been burned yet. anybody who comes on here and says my 4stroke is trouble free is just the same as telling everyone you cant twist the throttle very hard.
Cygnus wrote:
You are half wrong. If I was riding an 06 2502T I would have done at least 4 top ends for the cost of 100 each...
You are half wrong. If I was riding an 06 2502T I would have done at least 4 top ends for the cost of 100 each. My 06 450 has never had a top end. Only oil changes and air filters.
Why would you put 4 top ends in the 250 2stroke and none in the 450...unless the 450 is used for putting around?
kaboom645
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7/15/2010 7:04am
mxpilot43 wrote:
you guys that are saying 4stroke are cheaper to buy and maintain are living in freaking la la land. but i imagine it makes you feel...
you guys that are saying 4stroke are cheaper to buy and maintain are living in freaking la la land. but i imagine it makes you feel better about your purchase. keep your fingers crossed becuase you havn't been burned yet. anybody who comes on here and says my 4stroke is trouble free is just the same as telling everyone you cant twist the throttle very hard.
Cygnus wrote:
You are half wrong. If I was riding an 06 2502T I would have done at least 4 top ends for the cost of 100 each...
You are half wrong. If I was riding an 06 2502T I would have done at least 4 top ends for the cost of 100 each. My 06 450 has never had a top end. Only oil changes and air filters.
And what skill level rider are you, and how often do you ride.. I ride a minimum of 3 days a week and ride at pro level speed. I can go 6 months on rings and easily a year on a piston on my 2 stroke, and then its just preventitive maintence.


My first 4 stroke was a Vertimatti C501.. Back in 02 I recieved a full boat ride from them to help develop the bike. They provided a bike, mechanic, and any parts I needed. After 3 months The other team rider (Daryl Youngblood) and I were both dropped from the team b/c we couldnt get the bike to last longer than 30min without grenading.

For the 03 season I was offered some Yamaha support if I would race a 250F. Not having any better options other than going back to riding my personal clapped out YZ250, I took the offer. Huge mistake on my part. I was severely underpowered all season on the bike, my results suffered, and it blew up enough to cause maritial problems over my racing "budget". Piston and rings every month, valves/cam every 3 months, and new crank every 6 months were the only way to prevent catastrophic failure.

After 18 months on that bike I had enough and went back to riding my clapped out 2 stroke. Not long after that an injury and bike theft would force me out of riding till Jan. of 09. I decided to get back into riding, and the only bike my local dealer could get for me or offer me any sort of racers discount on was a 4 stroke. I reluctantly bought one, being assured that the reliability problems were a thing of the past and the 4 strokes had come a long way. At approx. 27hrs on the bike, a valve spring broke, causing a chain reaction of carnage that would have me replacing almost the ENTIRE engine to the tune of almost $4300 for parts and labor( I could have done it myself, but let the dealer do the teardown in hopes yamaha would warranty it). I fought with Yamaha for 3 months over the repair, and finally just gave up and paid the bill so I could get my bike back..

That weekend I ended up racing a local race and buying a used 2 stroke that was for sale. I rode that bike up untill last Feb. At that time I decided at that time to sell the 450, since it hadnt been ridden in 7 months. In a period of 1 week I recieved ZERO calls about the 450, but was getting around 10 calls/emails per day of people inquiring about the 250 2 stroke that was in the background of my for sale picture, and if I wanted to sell it. I was made an offer I couldnt turn down, so I went back to riding the 450. That lasted 3 weeks till guess what, it blew up again. I ended up finding a used YZ250 that was only 1 week old after searching every dealer in the southeast for a new one. I rode that bike up until the end of april when I broke my shoulder. At that time I decided to go ahead and list my 250 for sale, so I could get a new bike when I was able to ride again. Also keep in mind that my 450 has been for sale now for 3 months with not one call on it( listed for sale for $4500). My YZ250 was a 07 but it had about 50 hours on it... I listed it for $4500 , and I ended up selling it the first day it was listed for $4000. I only paid $3500 for it. It took another month for my 09 450 to finally sell at a price of $3700. I had the intial purchase price of the bike( $6000), the replacement engine ($4300) and then another top end($1300), and I sold the bike with less than 60 total hours for $3700.

My story may be rare, but for me, the 4 stroke has been a total loss. Bikes depreciate, but one has to expect a resonable return on the investment, and with a 4 stroke, one major failure and the ability to do that goes out the window. I can honestly say that if there wasnt a 2 stroke option, I would be done riding MX as I would be priced out.

I have been riding MX since Dec. of 93.... In that time I have blown up alot of bikes( my user name used to be katoom645, but the kaboom was earned). I have NEVER had a 2 stroke sieze on me suddenly, they ussually just slow down and then bog till they die. When a 4 stroke lets go, its sudden, does it without warning, and usually locks up tight. This becomes a huge safety issue, especially if you are jumping(a la Josh Grant at last years X games). I personally have been put over the bars 3 times from a 4 stroke letting go.
kaboom645
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7/15/2010 7:10am
mxpilot43 wrote:
you guys that are saying 4stroke are cheaper to buy and maintain are living in freaking la la land. but i imagine it makes you feel...
you guys that are saying 4stroke are cheaper to buy and maintain are living in freaking la la land. but i imagine it makes you feel better about your purchase. keep your fingers crossed becuase you havn't been burned yet. anybody who comes on here and says my 4stroke is trouble free is just the same as telling everyone you cant twist the throttle very hard.
Cygnus wrote:
You are half wrong. If I was riding an 06 2502T I would have done at least 4 top ends for the cost of 100 each...
You are half wrong. If I was riding an 06 2502T I would have done at least 4 top ends for the cost of 100 each. My 06 450 has never had a top end. Only oil changes and air filters.
seth505 wrote:
Why would you put 4 top ends in the 250 2stroke and none in the 450...unless the 450 is used for putting around?
B/C the 2 stroke was cheap and easy to rebuild, so it was easy to justify preventitive maintenence. The 4 stroke was not, and probably related to "opening a can or worms" by touching it.


Its been my experience that a 2 stroke will start feeling worn out when it needs a rebuild and gives you some warning.. The 4 stroke will continue to run good and strong, way past the point of needing a rebuild, right up untill it lets go.

That is probably the reason that 4stroke are so hard to resale these days.. That bike that ran so good for 4 years with only oil and filter changes is now a ticking time bomb for the new owner that could go any minute
chase383
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7/15/2010 7:42am
I own and race both 4T and 2T.. The only issue I have had with either is seizing up my YZ144 and it was probably my fault for not jetting for the conditions.. but I thought this point from MXA kinda hits the nail on the head..
"If the two-stroke was invented today, it would sweep the four-stroke motocross engine off the face of the earth (which is exactly what it did 43 years ago—when the displacement rules were equal). "
mx317
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7/15/2010 8:30am
I still race so I buy what I can ride fastest on, that happens to be a 450. I tried a current YZ250 and though it was fun, my results suffered. If I just rode, I would most likely have a 2-stroke. I still get my 2-stroke fix on my Elsinore at vintage races.
seth505
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7/15/2010 8:49am
mx317 wrote:
I still race so I buy what I can ride fastest on, that happens to be a 450. I tried a current YZ250 and though it...
I still race so I buy what I can ride fastest on, that happens to be a 450. I tried a current YZ250 and though it was fun, my results suffered. If I just rode, I would most likely have a 2-stroke. I still get my 2-stroke fix on my Elsinore at vintage races.
can you be more specific on how your results suffered? just wondering. I race a yz 250 and went 1-2 with another 2stroke last race. The guy who won expert was also on a ktm 250. Also, are you able to race 250f vs 250 at your track?
peelout719
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7/15/2010 8:54am
neverwas wrote:
What does the "T" stand for?
2 troke vs 4troke
x2

motomike137
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7/15/2010 8:55am
the real reason they wanted to relace the 450 with a 350... not enough of em get blown up or need to be rebuilt when ridden by the average joe
motomike137
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7/15/2010 8:56am
the real reason they wanted to relace the 450 with a 350... not enough of em get blown up or need to be rebuilt when ridden by the average joe
motomike137
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7/15/2010 8:57am
whoops! twitchy trigger finger!
CamP
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7/15/2010 9:11am
chase383 wrote:
I own and race both 4T and 2T.. The only issue I have had with either is seizing up my YZ144 and it was probably my...
I own and race both 4T and 2T.. The only issue I have had with either is seizing up my YZ144 and it was probably my fault for not jetting for the conditions.. but I thought this point from MXA kinda hits the nail on the head..
"If the two-stroke was invented today, it would sweep the four-stroke motocross engine off the face of the earth (which is exactly what it did 43 years ago—when the displacement rules were equal). "
MXA is spot on.
dr516
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7/15/2010 9:13am
newmann wrote:
From Jegs mail order. Edelbrock #350-2099 Power Package Top End Kit 1955-86 SB-Chevy 327-350 435 HP, 435 ft/lbs TQ $1,839.99 [img]https://www.jegs.com/images/photos/300/350/350-2099.jpg[/img]
From Jegs mail order.

Edelbrock #350-2099
Power Package Top End Kit
1955-86 SB-Chevy 327-350
435 HP, 435 ft/lbs TQ

$1,839.99




That must put pro circuit in the greed and corruption category.
peelout719
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7/15/2010 9:15am
i'm selling my 450 and am going to buy a current 250. i've even thought about getting a ktm300 two stroke.

i am at a point financially where if i blow up my 450, i will be done riding until i pay the bike off. at which point i still won't be able to afford fixing it.

4 strokes are killing the sport i have spent 15+ years loving.

one thing i hate about 4 strokes is it's too easy to go fast. i used to train for hours doing turning drills to get faster. if i screwed up a corner in the 125 pro class, i would suffer down the next straight or not be able to jump the next section, cornering was such a fundamental factor to being fast. you really had to work to be a faster rider on a 2 stroke. i miss that.. blow a corner on a 250f or 450 and just lean back and pin it, there is no penalty for not being able to corner.
dr516
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7/15/2010 9:20am
As bad as our cobra 50s are I dread the day my boys start riding 4Ts
wilcom121
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7/15/2010 9:34am
kaboom645 wrote:
I ran amsoil in my 4 stroke costing me a little over $10 per oil change.. add into that a new oil filter every oil change(...
I ran amsoil in my 4 stroke costing me a little over $10 per oil change.. add into that a new oil filter every oil change( $10).. The bike got an oil/filter change every ride..servicing air filters on both 2 and 4 strokes is the same. On my current 2 stroke I change the trans fluid every ride and it costs me $8 for belray gear saver. I also run maxima 927 for premix that costs me $7.50/pt which mixes 5 gallons and usually lasts 1 day of riding. That makes the 2 stroke exactly $4.50 per day of riding cheaper to own.. The 4 stroke uses a little less gas per day of riding so I consider both bikes a wash in day to day cost.

What seperates the cost of ownership is the cost of replacement parts. I currently ride a KTM, but lets compare the replacement parts costs of a YZ450f and yYZ 250 smoker for comparison. Both bikes have a 5 race recommended interval for top end servicing( even though both bikes can go much longer). I am using this site http://www.yamahapart.com/ for price comparisons.

YZ250:
piston..........................................$52.75
rings............................................$21.77
wrist pin.......................................$11.71
wristpin bearing........................$11.06
circlips...................................(2)@ $2.36 ea.
Total..............................................$102.01

YZ450f
Top end assembly( includes piston, rings, wrist pin, wristpin bearing, and circlips)...$123.70

This is just top end replacement( normal maintenence).. What happens if you blow the bike up?Assuming a catastrophic engine failure on the 2 stroke it will likely cost you a cylinder, and a crank. Those parts cost you $253 for the crank assy, and $422 for the cylinder.$675 and you are back on the track

On the 4 stroke, you have not only a cylinder and crank to buy, but most likely cams, valves and possibly a head. Also when a 4 stroke lets go, it usually sends the rod through the transmission, breaking and destroying alot of parts in the transmission.. When my 09 yz450 let go on the 3rd ride, it broke one side of the cylinder head off, and sent the rod through the transmission.. It cost me almost $4300 to have the engine replaced
Shift!
pie8man
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7/15/2010 10:55am
The difference is that the PC parts are short run and hand ported a few at a time custom pieces and that power kit for your Vette is a bunch of stock parts with bigger valves straight from the CNC machine. That head casting is machined to fit on 6 different models of LS series motors. Valves are stainless compared to titanium for the PC head. The RPM of your 250F is in the 14,000 range, the Vette 7000 RPM redline (if I remeber correctly) If you want a fully worked set of race heads for your vette you will drop some serious coin. Last I checked a "race motor" for a vette based on LS-2 thru LS-7 blocks is about 50G. I can build 3 national caliber privateer race bikes for that.
Never mind.... Go drive your vette at the track.
pie8man
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7/15/2010 10:57am
wilcom121 wrote:
Shift!
This wins quote of the day hands down.
Gotta get those shift points right Smile especially if you want to get a good start and finish.
Tiki
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Fantasy
7/15/2010 11:04am
My 04 thumper is still way cheaper and ahead of any two stroke I have ever owned. I guess I am lucky in that respect.

Though - I would enjoy a KTM 150, but I know if I didnt stay up on the piston and drive, I would be done. I am almost embarrassed to mention how well my 450 still runs on what little I have done to it in the past two years. Oil, air and oil filters and tires. Even the chain is embarrassing.
Tiki
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Fantasy
7/15/2010 11:09am
newmann wrote:
From Jegs mail order. Edelbrock #350-2099 Power Package Top End Kit 1955-86 SB-Chevy 327-350 435 HP, 435 ft/lbs TQ $1,839.99 [img]https://www.jegs.com/images/photos/300/350/350-2099.jpg[/img]
From Jegs mail order.

Edelbrock #350-2099
Power Package Top End Kit
1955-86 SB-Chevy 327-350
435 HP, 435 ft/lbs TQ

$1,839.99




dr516 wrote:
That must put pro circuit in the greed and corruption category.
That IS embarrassing! OR they are selling more chevy parts then 250F parts.

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