Four-Stroke

Hi all. I am trying to build a trials bike using an engine from a 1978 Kawasaki KL 250. This build was inspired by some fantastic pictures posted on this site by Booma.... My problem is, i am not using the same frame he used and am having trouble getting the carb to fit in the frame. My question is... Can i lengthen the inlet manifold? If i can lengthen the tube from the carb to the head by about 30mm it will make fitting far far easier. The problem i have is, i have no idea what effect this will have on the mixture and running of the engine? If anyone has any knowledge of this subject? I would greatly appreciate the help. Many thanks.

As they say apicture is worth a thousand words.

Thats it for now i have tried all the new breed four bangers the new scorpa seems nice (to early to tell )but the sherco was fine for about three months. as a clubman level ride i think the scorpa will fit right in I am finally getting used to my monty (really soft usable power with restictors in ) and the kit is on the way for the sherco ,now this bike is really an expert level bike (to much power for me) Lots of people comment on the noise of the fourstroke have they never heard a pre 65 bike now that is noisey,but i love them aswell

Not sure if there has been a topic on this before but i couldnt find one anyways so............... Just wondering, went to nord vue yesterday, apart from cabestany, the sherco and beta riders were on 2 strokes. Just wondering why dougie, brown, wigg and all the others dont ride the 4 strokes. obvioulsy the gasgas and montesa riders dont get a choice also in club trials, most people seem to still buy 2 strokes, maybe due to cost? I dunno when the gasgas 4 stroke comes out, will raga ride it, or stick with the 2 stroke? Whats your thoughts?

A lot of people seem concerned about the volume of the new breed fourbanger pipes,dont any of you ride when there is a pre 65 class? You colud hardly call a triumph trophy or a cub for that matter quiet,but the noise they create is marvelous,I cant wait for a new banger (still wringing the kneck off my scorpa 125 f,poor thing,i am 17 stone)

Hi, Just a question...how do you think the manufactures will deal with selling the new four stokes? Montesa for example, god knows how many 04 bikes they produce, but around most are already brought before they are realised (though deposits). The Four Stroke Honda (in my opinion) will be highly requested, as will other brands when their 4 strokes come out. Although the rule isn't in place till 2006, requests for these bikes will be massive. How will manufactures deal with this massive request? What are your opinions?

Took air filter out to clean and noticed engine oil? in bottom of air box. This was after running all day. Any body any ideas.. Its not filter oil, defo engine..

Tell us all about your steeds

Montesa 4T vs. Sherco 4T (animated gif)

Now then, is that what you expected? (front page photos of new Mont) I expected not to like the look but am pleasently surprised. If doesn't look any bigger or for that matter much heavier than the Montesa 2T. The frame design looks early gas gas but in Aluminium. I guess the frame had to get smaller in dimension to keep the whole thing small.

Had a look on google to see if anyone had an 06 4rt picture and found a diego bosis 280 special Is next years 4rt a 280 ?

How well do the montys start ? my sherco is really random, one trial it will go all day first or second kick then for no apparent reason it will flood or pop and take bloody loads of kicks to start. This happened three times yesterday then calmed down for the last lap. does the fuel injection stop this?

Hi all, Would love to have animated this but no time. I centred both bikes around the swing-arm shaft. PS. I had to mirror the 2T.

Whilst doing some googling I spotted this Motobi trials special and thought I'd post it. The frame/swingarm and forks are not OEM Motobi parts. cheers, Michael

Munch was wondering if you have your bike yet. Apparently Appleyards had them to test at Moto 1. sandifords had them at the Scott! My local dealer says it will now be next week before they appear? Wonder what the hold up is now

Husaberg Powered Trialer 350cc Husaberg Engine Early Sherco Wheels Custom Frame Works Per. Shock and lots of frustration!!!

Everyone is going to have one, right? When does it look like we will be able to see one?

carbon cover for my exhaust...........and my boot's standing now more in the rear........

Reading posts about the new Beta due to be unveiled soon, makes all brands but GG with a four stroke in the works. Any news when it will become mandatory for the world championship ? I don't think Beta are getting the jump on Sherco DP, the 3.2 is one hell of a machine to ride, had it's initial problems, I was able to get mine performing, and the factory will no doubt be on top of the job, Fuel injection isn't beyond any of the factories, it may be the cost it adds to the price of the bike that may be the big factor, you get a good bike with the Mont, but you do pay extra for it. I think I read in the last Sherco mail news that they were contesting the WR with fou…

Hi all, After the first year of use, I think we have more clear the arguments of the new 4S machines. I own a 4RT with just one year old and I would highlight this points: - Flawless bike. No problems at all in this first year. The bike keeps intact its performance in one year. - Great response of engine, always constant in any situation. - A little bit heavy in front, difficult turning. I got more tired with the 4RT than with a 2S. - Great suspension. - Not cheap to do maintenance: so frequent oil changes, included oil filter, made the bike significantly more expensive to maintain than a 2S. The final point: Would I buy it again? Probably not. The main rea…