Compression tester and adapter

[Neosophist]

Take em off if possible.. will make it easier to get the air in to test the compression!

Doubt it'll be head-gasket though.. your not mixing your fluids and there bullet proof on the VFR's

[oldgreyandslow]

Take em off if possible.. will make it easier to get the air in to test the compression!

Doubt it'll be head-gasket though.. your not mixing your fluids and there bullet proof on the VFR's

Cheers

Off they will be then, removong them is easy, replacing them isn't too bad either, but getting that top throttle cable back on............. jeez, more skinned knuckles, gouges etc than enough.

[viper61]

Yeah will be much easier off. And all plugs out as someone mentioned.

Yea I agree that it might not be the head gasket (my past experience has been on a french car so diffferent league haha) but had the gasket go between two cylinders so it was running like a dog but the usual symptons such as mixed fluids weren't there. Once I did a compression test it was clear, and unlikely that two pistons' rings failed at the same time.

Good luck mate and post up here if you need any help. If you start to get wound up by it just stop, deep breath, grab a cuppa... and think of me at a foo fighters gig! :-)

[oldgreyandslow]

Yeah will be much easier off. And all plugs out as someone mentioned.

Yea I agree that it might not be the head gasket (my past experience has been on a french car so diffferent league haha) but had the gasket go between two cylinders so it was running like a dog but the usual symptons such as mixed fluids weren't there. Once I did a compression test it was clear, and unlikely that two pistons' rings failed at the same time.

Good luck mate and post up here if you need any help. If you start to get wound up by it just stop, deep breath, grab a cuppa... and think of me at a foo fighters gig! :-)

Don't mention French Cars! My daughters citroen saxo has a head gasket problem, oily water in the expansion tank, what a bloody mess, changed oil and coolant anyway, its not boiled over yet, we'll run it till it dies!

Enjoy the gig, I bet tickets were as rare as rocking horse shite

Adapter sorted btw, mimics the plug end spot on, however no washer so I'm using a drilled out tap washer for the moment.

If, no once, I get to the end of this saga, if anyone wants to borrow a precision made adapter...............

[viper61]

French cars are poop.

Yeah cheers should be good mate. Brother actually has two spare tickets. Good time to let me know, on the day of the gig!

Good luck with the test mate, once you've done that you can focus on the carbs, providing there is good compressions etc.

Are you going to do valve clearances while you're at it, or you already done those? Can't remember.

[Adderboy]

well it would be better warmer because as metal heats up it swell/expandes so any small gaps that were there cold maynot be there when warm, hence why me and martin have both said test it cold, the haynes isnt always true, there are editing mistakes that a hawk eyed enthusiast will pick up, it also tell you to test the valve clearances on an NC30 wrong too!

Cheers
I only spotted the Haynes mistake on valve clearances after reading the guide on here, mind you I did do clearances on my fazer about 8 years ago so should have noticed, the text was right though.

Probably test the compression before digging the carbs out again to do the float heights, after all if it's buggered I'll have about 12 months to sort it out

Hi -- Quick question, I have just finished a valve clearance check on my NC30 and have blindly followed my haynes without question, can you please point out the mistake to the more mole eyed enthusiasts such as myself? Cheers.

[spanky]

On the compression tester front I was wondering the exact same question earlier - is there an 8mm tester available anywhere. I was about to post then spotted this thread, and then 140580569312 on ebay. It looks to me like a compression tester with an 8mm adaptor as well as the nasty push-on rubber adaptors. Don't suppose anyone has one and can vouch for its fantastic quality?
James.

PS Adderboy.. slightly off topic but since you ask the haynes manual says to measure between the rocker and cam, you should actually measure between the rocker and valve. As long as your clearances were mid to loose I wouldn't worry.