Added reply in a thread mxing my 125-175 11/12/2016 2:09 AM

Are you using a barrel from an IT 175 engine? I converted a 1979 YZ125 engine to 175 cc by using an IT barrel. I used a piston from a 1976 YZ175 as it is a single ring piston. The engine went very well but vibrated quite badly. I found that the IT175 ... more »

Started new thread Only for the brave 11/3/2016 11:38 AM

Anyone fancy a challenge? And as for the asking price

shocked
http://www.ebay.co.uk/itm/MAICO-GM-250-1985-maico-vmx-twinshock-evomx-/182324386647?hash=item2a73615b57:g:k4sAAOSwal5YCoBx

This forum thread has 4 replies

Added reply in a thread Is this enough to start a resto..it is , i have 10/30/2016 11:34 PM

Would a Husaberg lump go in there? These engines are a lot more common than the Vertemati engine. This one is a bit pricey but probably cheaper than rebuilding one http://www.ebay.co.uk/itm/HUSABERG-650-ENGINE-RECONDITIONED-2004-MINTER-/251867471419?hash=item3aa4789e3b:g:lysAAOSwstxU-KXc ... more »

Added reply in a thread It490-465 10/29/2016 1:55 AM

Pretty sure the 465 and 490 use the same conrod. The 490 is essentially a slightly overbored 465, so I see no reason why it would not run ok with the 465 barrel. Might be worth checking that transfer ports etc match up. What makes you think it isn't ... more »

Added reply in a thread 1979 yz125 help 7/31/2016 9:02 AM

It is probably the reason why it isn't shifting, but surely if you bought a $200 project you were always intending to strip it down and go through it anyway? New parts should be readily available, so just take it apart and get it sorted. It is likely ... more »

Added reply in a thread Best 250 or Open class bike of 1984? 4/10/2016 1:18 AM

Probably a controversial suggestion, and I don't know how easy it would be to find one, but the 1984 Maico 500 was a better bike than most people

Added reply in a thread Roach of the day 1/25/2016 12:45 PM

Hey guys, how about this one? Bargain too!

http://www.ebay.co.uk/itm/Husqvarna-CR250-twin-shock-motorcycle-/191786787224?hash=item2ca7622198:g:o84AAOSwqrtWnjSD
Added reply in a thread 1981 Yz250 1/14/2016 11:34 AM

Why can't you use the existing cylinder, or is it missing completely?

Started new thread Roach of the day 1/9/2016 1:46 PM

For sale on ebay here in the UK, got to be a candidate for roach of the day: http://www.ebay.co.uk/itm/HONDA-CR500-1986-PROJECT-/201486580587?hash=item2ee9893b6b:g:ph0AAOSwo3pWcpgr

This forum thread has 10 replies

Added reply in a thread 125 production models ARE coming back, and awkwardly, Luongo will be the one to thank. 12/30/2015 12:09 PM

I think the two complete bikes above are the George Beale replica of the RC174 Honda 6. Mr Beale lives a few miles away from me in Leicestershire, and he built six replicas of the six cylinder Honda. Interesting info about the replica build here: http://www.motorcyclistonline.com/honda-rc174-rc-reborn ... more »

Added reply in a thread Never seen one !!! 12/30/2015 5:29 AM

With respect to the OP, it is nothing like a 500 Honda IMO. I had a 250 Maico in 1985 and it was a fairly good machine, but nowhere near as advanced as any of the Jap bikes at the time. Simple engine with no exhaust valve, the rear suspension linkage

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Added reply in a thread 125 production models ARE coming back, and awkwardly, Luongo will be the one to thank. 12/30/2015 5:12 AM

It's nothing to do with the oil. Castor oil is a vegetable based oil, so should be as clean as it gets, but even using castor oil a 2 stroke will not meet emissions regulations. It is because a 2 stroke does not burn all the fuel that is drawn into the ... more »

Added reply in a thread New member. My first bike! 12/25/2015 9:59 AM

I had a Husky 390 that was prone to filling itself up with fuel like that and my dad and I would turn it almost upside down to pour the fuel out of the engine. I have heard of guys drilling a hole in the bottom of the crankcase, tapping it and then putting ... more »

Started new thread Bultaco specific forum 5/6/2015 2:08 AM

Not sure if this is common knowledge amongst the many Bultaco owners out there, but there is a Bultaco specific forum where we can all talk about the superior machines we own

tongue
Here is a link: http://bultacoforum.com/index.php It seems to be ... more »

This forum thread has 1 reply

Added reply in a thread Why did factory teams use aluminum tanks back in the day? 2/24/2015 10:28 AM

Good point, and the factory bikes before the production rule was brought in bore very little resemblance to the production bikes so the standard tank probably wouldn't fit anyway.

Added reply in a thread Why did factory teams use aluminum tanks back in the day? 2/24/2015 10:14 AM

I would say the main reason was to save weight. The works tanks were hand made from very thin sheet aluminium and therefore would have been significantly lighter than the production tanks, especially in the 70s when fibreglass was more common. Then of ... more »

Added reply in a thread SUZUKI RM370B 1977 12/7/2014 12:10 PM

The 1976 and 1977 RM370s were pretty similar, so I doubt anyone would worry too much about it. Where are you planning to race it? Unfortunately not many events run a pre-77 class. I have a 1976 Pursang and have to go out in the Twinshock class at most ... more »

Added reply in a thread Progressive rear shocks 9/24/2014 12:55 PM

I tried Progressives on my Bult and they were a waste of money. As the old saying goes, buy it cheap, buy it twice. They were way too stiff and gave me a bad back. I would suggest saving for better shocks.

Added reply in a thread YZ125 1979 Race build 9/11/2013 1:44 PM

Gotta have lightning bolts on a YZ, it's the law

w00t
I think you're right about the YZ turning capabilities. It always felt a bit reluctant to turn tight, unless it was just me. The pipe is a Retro Rocket from Vintage Iron. Nicely made ... more »
Added reply in a thread YZ125 1979 Race build 9/11/2013 7:00 AM

I recently sold my 79 YZ125 after making similar mods. I fitted a set of 38 mm yokes and forks from a 1982 YZ125, and they were a bit better than the originals, but as you have noticed, they are fair bit longer, so you end up running them way down in

... more »