slabby dropped a valve or something.

[boilerdude]

I bought this bike somewhat cheap and apparently needing a new cct. Well I replaced that and of course I should have known thats not what the noise was. it's still there. at low idle. something rattles and one cylinder misses. choke to get the bike started a little higher rpms and the noise goes away though. And when I test rode the bike it fired on all 4 after 4 or 5k or so. But at regular idle there is some kinda knuckley rattley sound. And I dont think it's the cam chain at all. The tensioner I took out worked fine and the bandit one I put in also. 

I guess just wish me luck for now. Any pointers before I get started. Should I need the suzuki valve tool or no?

[Gixer1460]

If it had dropped a valve it'll run like crap and deffo won't run on 4. Big ends or main bearings possibly? If they've had it then symptomatic of bad oil pressure some time and cams may be fubar'd as well? Until you strip some down you won't know if you need special tools - normal spring compressor usually ok.

[boilerdude]

Goddammit. You ever wish you could just go back in time and warn yourself to do or not to do something.

[Sheep]

Have you checked the oil for debris etc?....Would a stephoscope,homemade or otherwise,help locate the noise better??....just throwing ideas out there

[boilerdude]

I thought it sounded more like a head noise off hand. What I'll probably end up doing is swapping a bandit motor in there while I build this one for my bandit.

[teltwosheds]

If you want to check inside the head. Lidle are doing those mechanics cameras with the probes etc, for 30 some thing quid 

[Katana]

first of all check it isnt just clutch rattle if it goes when revs pick up. put a long scewdriver to your ear (blunt end)then touch it on various parts of engine when running to get a idea where rattle is coming from

[canamant]

Do a compression test. 

IF compression is OK  and if it runs OK after 4 - 5k check the mixture screws under the carbs.  I had the same symptoms on Slabby Racer 1 one day.  Turned out someone had turned the outer carb's screw right in. 

[tabby59]

Have you even taken the valve cover off to see what is going on in there? It could just be loose valve clearances, maybe a cam lobe gone to crap, and yeah, you can see if the springs are up to snuff.

 

[GsxrCol]

I would set all valve clearances and then balance the carbs, these can run shit at low revs if the carbs are out and the slides make all sorts of weird noises.

 

[Nelson]

What GSXRCol said Dude.

My Slabbie was running rough at tick-over & No. 4 pipe was a lot cooler to touch, (spit test).

It sounds like your running issues. 

Tried all sorts, it was driving me mad.

Went back to basics, checked the valves, then balanced it, No, 4 was miles out.

As I adjusted the carbs in, you could hear it was right.

Don't know about the noise though, good luck

[boilerdude]

I recently landed a new job for now and I havent really had time/energy for it as of yet. Saving up money for somebody to "help" me with this or sell it and move on. 

Ive been wondering how much I would have into shipping (from US) one of my bikes directly to dave dunlop and having him work the whole thing over...

[rustychain]

clutch basket springs went on mine sounded like a bag of spanners

[1168turbo]

On ‎17‎/‎07‎/‎2016 at 6:03 PM, boilerdude said:

I recently landed a new job for now and I havent really had time/energy for it as of yet. Saving up money for somebody to "help" me with this or sell it and move on. 

Ive been wondering how much I would have into shipping (from US) one of my bikes directly to dave dunlop and having him work the whole thing over...

boilerdude...it was 700 bucks 3 years ago from queens to europe,plus 120 to build crate....then dave to work on it,the rate of exchange,ship it back, you`re looking at the best part of 4000..

Edited July 30, 2016 by 1168turbo
wrong word

[boilerdude]

that sounds optimistic even. probably more like 5 or 6. or more

[1168turbo]

never got mine running right.ended up selling it cheap.people are c&&ts,both sides of the atlantic!

[Gammaboy]

On 18/07/2016 at 3:03 AM, boilerdude said:

I recently landed a new job for now and I havent really had time/energy for it as of yet. Saving up money for somebody to "help" me with this or sell it and move on. 

Ive been wondering how much I would have into shipping (from US) one of my bikes directly to dave dunlop and having him work the whole thing over...

Depending where you are in the states, talk to Chris at MotoGPWerks - He's in Anaheim i think.

[Dezza]

When the bike had a knackered cam chain tensioner, was it gone so much as the chain was very slack? If so, the chain may have jumped a tooth and put the cam timing out. Just a thought.