Posts
3110
Joined
7/2/2012
Location
Los Angeles, CA
US
Edited Date/Time
5/2/2015 3:11pm
What the hell should I do!? I've always ran basically bone stock bikes with a pipe and bars, but this year I will trying a couple of nationals and want to take it a bit further. I need some suggestions from people that know more than myself!
The area I need the most help in is engine mods and what to do to the FI system. I don't want to go insane in the motor (I mean shit, it's a 450!) I just want it to be tuned more specifically for a pro rider than how it comes stock.
With my limited knowledge, I was thinking higher compression piston, polish the tranny, and have the bike re-mapped and put the power more where I like it. I already have a Yosh RS-4 system for the bike and I think I'll be keeping that as it should pass sound testing. Also, I already have the more important stuff like suspension and brakes taken care of. I know nothing will substitute my own riding ability but I figure I might as well make a sweet race bike while I have the oppurtunity!
If not obvious, this is a 100% privateer effort between my dad and myself so getting the most bang for my buck is going to be key! I won't be getting anything for free, maybe some discounts at best, so if you can keep that in mind when suggesting parts.
The area I need the most help in is engine mods and what to do to the FI system. I don't want to go insane in the motor (I mean shit, it's a 450!) I just want it to be tuned more specifically for a pro rider than how it comes stock.
With my limited knowledge, I was thinking higher compression piston, polish the tranny, and have the bike re-mapped and put the power more where I like it. I already have a Yosh RS-4 system for the bike and I think I'll be keeping that as it should pass sound testing. Also, I already have the more important stuff like suspension and brakes taken care of. I know nothing will substitute my own riding ability but I figure I might as well make a sweet race bike while I have the oppurtunity!
If not obvious, this is a 100% privateer effort between my dad and myself so getting the most bang for my buck is going to be key! I won't be getting anything for free, maybe some discounts at best, so if you can keep that in mind when suggesting parts.
Tag bars that I prefer over stock
Yosh RS-4 system
Acerbis skid plate
WC radiator braces
oversized front rotor
Pro-Action Suspension (one of my few sponsors but they help me out a lot!)
I plan on adding these parts:
Hinson clutch plate and spring kit and billetproof basket (don't have a grand to drop on the full Hinson clutch but I think this will be good improvement over the stock one)
Chain and sprockets (obviously)
Streamline clutch perch and front brake lever with steel brake lines
Moto Hose Y hose kit
But it's true . Just remember the more you upgrade/modify the more maintenance it is.
The Shop
And since you run the most righteous number in the universe, send me a pic for this page:
https://www.facebook.com/pages/The-Number/668900573143554?ref=hl
Good luck at the Nat's!
I'm glad I'm running someones favorite number! Wasn't one of my choices but I'm cool with it, something new! I'll get you a picture as soon as I have my graphics in.
My RMZ 450 has a full E10 mods motor, tranny polished, with full yosh and mapping. You can take it for a spin if you'd like. Should be riding somewhere this wknd.
The first and most important thing to do is get some good suspension on the bike!! You can't ride an already fast bike if it doesn't handle!
The second thing I would do Is get a hold of Dan crower at crower cams. I personally wouldn't do a high compression piston.
I would trim your cylinder .01-.02'' and try to get your squish gap as tight as possible and build your compression that way.
The manufacturer oem pistons are always the most reliable and usually weigh quite a bit less.
Dan will sell you a kick ass cam that will wake your bike right up.
You will then have to make sure per spec that your cam is degreed correctly.
I'd do a full stainless exhaust with aluminum can because they hold up better than the ti stuff. The ti stuff is trick but it always cracks and dents real easily.
I'd make sure you have good valves, good seats, and find someone who can give you a good port job.
Get some race gas, talk to dan I'm sure he can recommend something for you. We always run VPR or U4.4
Put it on a dyno, make sure your air/fuel mixture is correct at every 500-1000rmp
And if you want to get real sick into it. Send the crank to falicon and get what they have called a supercrank! Polish up your transmission, get some ceramic crank bearings! But all that is frivolous
Then all you have to do is hold it really wideee!!!
Pit Row
Sixeightone: thanks for the tips. Idk about cams and all that but I'm taking every thing into consideration.
Mxb2: thanks for the suggestions!
Trav138: occasionally, doing doublin this weekend. I have some PAMX bucks to spend lol. I'm tryin to find the biggest A gates I can and unfortunately we haven't been getting those in PAMX. My only motivation to race them is contingency.
Errrrr, maybe that didn't come out right...
Motor wise here's what I think you should do. Go through it and rebuild it. It would be fine to put a high compression piston and cams in it, but other than that don't worry about performance mods. A full Hinson clutch is a great idea. Put an exhaust system on it and get the mapping dialed in. That's all you need.
You and a lot of other people will likely disagree with this, but you would be surprised at how many privateers can/do qualify on mostly stock or mildly modified 450 motors. I've been at the nationals and seen it work. A high $$ race motor does no good if you don't have the raw speed to put you near the 30-50 qualifying range.
Honestly, I thought my original post was making it clear that I don't want a high dollar race motor, guess not haha. I am confident I can make it in the fast 40 but I am a little worried about being left behind at the gate if I leave the motor bone stock. I can't really afford to do the whole Hinson clutch (or rekluse) so wouldn't the plates, fibers, springs, and basket be the next best thing?
I know some people will read above and think, "He can get a brand new bike for nationals but can't afford a Hinson clutch?" Well my dad is buying the bikes and all the parts and upgrades are on me. I only work part-time because I go to college full-time. Contingency money from local racing helps me get most parts.
Edit: Forgot to say thanks for the suggestions mxtech. I'm still open to suggestions on motor mods but I know running good fuel and getting it mapped correctly will be my priority.
This was a stock motor with just an FMF pipe at Elsinore on the 241 of Derek Anderson (he's on the outside of the first picture).
Sprint speed (and suspension you are used to and comfortable with pushing the limits on) for qualifying and endurance for the motos are what you can focus on.
The basket/plates on the clutch are a solid investment along with good fuel. A clutch to swap partway through the day to a freshy is also a solid investment. And tires.
Good luck man, will keep an eye out for you!
Thanks for the tips Chex.
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