JasonYZF

I can't see any on E-bay sub £400 for a Thundercat engine, have you got a link?. A fazer will be no good.

The conditions excellent. I wanted a good example so paid £1900 for a 2001 on 22,000 miles which appeared to be loved and well looked after. Now turns out despite apperances the previous owner ragged the dogs. Lucky me

This is my main commuter so I need it to keep getting to work. I think with this in mind I still have more options by getting a second hand engine and swapping. I would then look at maybe striping the spare as I would prefer to get that one up and running if only to learn a little from it. I think whatever fix I go for, my confidence in Thundercat's has gone. When it's up and running I will be baring this in mind and may look for something more relieable in the relative near future.

Cynic, Thank you for your in depth response. You talk a lot of sense and it's deffinatly something to consider, And yes hindsight is a fantastic thing. To be honest I researched most things and checked the shocks etc, but this is my first big bike, and had nothing to compare the transmission too and had no idea what "felt" right when changing gear. Clearly I'm a muppet. My only concern with your suggestion is my own talent, or should I say, lack of. I've studied guides and the Haynes manual in depth and am confident of swapping the engine ok, But I'm worried removing cams, spliting the head and getting to the tranny may be too much, without help anyway. I need to stay mobile as it's my only commuter. My thoughts where to buy a half decent used engine and swap. I then have no intention of binning the old one as the engine itself is perfectly sound. Instead I will then attempt to break it down and see how far I get, if only to gain spares, sell parts or generally see how difficult the job is and learn a little. Who knows I might get all the way down to the tranny in the end anyway in which case I have 2 engines It just keeps my options only, Providing I can find an engine that is Thoughts ?

Hi guys, Firstly I'm new to the site so let me start by being polite and saying "Hello". Been meaning to join for ages but sods law the bikes gone wrong and I need help so as good a time as any. In short, I need a decent 2nd hand Thundercat engine. I've only had my Yamaha YZF-600R Thundercat for 3 and a bit months and the bloody things gone wrong. I'm pretty new to biking and didn't really know what to look out for as this is my first "biggish bike". Turns out after buying that I was getting an occasional neutral and having difficulty changing from 1st to 2nd on WOR. Second gear has now started to slip and on research this is a sure sign the transmission is failing and is a very common issue. I'm pretty hands on , But doing the tranny myself is far too much work as you have to remove the engine, split the head and basically disassemble the whole engine to get to it. I'm therefore looking at just swapping the engine as this seems far easy. Now the problem is where do I get one from?? I'm dubious about using E-bay for something so important. And the only breakers I've approached and researched turned out to be cowboys. I want to buy from someone or somewhere reliable so am turning to like minded people on the forum for help. If anyone could offer me any help or advice please let me know as it would be a great help. Ilive in Bagshot, Surrey,UK Wish me luck Jason