Hi Im looking for a cam chain for my GB250 and have cross referenced it to a xr350 cam chain.The one Ive found online is saying its 108 link chain..mine is 54 links..Am I right to assume that as its a double row chain that the 108 links is just the 2 rows of 54 ?..... Thanks Tip for the day dont buy a (old) gray import that has a no corresponding local model
Some cam chain's are referred to by the number of link pin's they have, eg 2 pin's per link, just like motorcycle drive chain's. Does you GB250 cam chain have 108 pin's ? CMNSL- XR350 cam chain https://www.cmsnl.com/honda-xr350r-1984-e-usa_model7765/chaincam_14401414014/#.W3-EdlQza70
yeah 108 pins..... https://www.cmsnl.com/honda-gb250-clubman-1993-p-mc10-140_model50661/chain-cam_14401ke5003/
It's strange there isn't a replacement listed for the original GB250 timing chain, eg obsolete replaced by **********
yeah an this is the add that made me wonder https://www.ebay.com.au/itm/Honda-XR350R-1983-1985-108-Link-Cam-Chain-40-82R2015-108/332584286774?ssPageName=STRK:MEBIDX:IT&_trksid=p2060353.m1438.l2649 No idea if the brand is any good but its the best price Ive found so far
I have no idea...the GB was based on the XR350 bottom end with a twin cam topend...The xl had different bottom end but the xr250 was based on the 350..maybe a shorter stroke?...Im just chasing obsolete part alternatives to get my baby back on the road...The gods must really hate me, what a super day today was for going for a ride..
XR350 chain arrived today..looks pretty much the same as the orig chain...Was a waste of $$ though as the orig chain was only a tad longer....Bugga!...Oh well was down in that area stripping the oil pump and lines anyways.....
Agreed, I have had FZR250 cam chains stretch by 5mm and that is enough to affect the timing and make the bike rattle.
MMMM Looks much like the the little hyvo cam chains on the Honda Spada. I still havent summoned up the courage to fit new ones to my long term rattly , 70,000km spada. Every person I ask gives different advice on rejoining the links. The importer of the cam chain reckons you just need to press the pin in with no need to peen the end. Some mechanics say this is true, some say they wouldn't trust it. Some say the joining link should be a have a hollow pin that end can easily be splayed with a good chain breaker kit(these joining links seem to be unavailable and some say they would create a weak spot in the chain)..what method are you going to use?
Mine is only a single cylinder so cam chain is a snap to fit without to much pull down....all the multis Ive ever done were with a joining link ... I just peen em with a drift, hammer with someone holding a metal block or hammer on the other side....
I have done a few cam chains, peening the end of the pin is good practice, but the first time I did a cam chain I didn't know about it at all, so it was left unpeened. It never fell out.
