It seems to be down slightly on compression on cyl2 chris didnt say how much by, but a "little"

Heads been off, stripped, checked for cracks (all ok! ) skimmed and rebuilt,Any ideas why it may be down?


pistons rings maybe?


Valves need settling in?



Bet its gonna hurt the wallet anyway.. Its gotta, Its me, the most unluckiest guy ever

Thanks

 

Surely he should of been able to tell you this......after all hes just had the engine in pieces!!!

 

too right!!!!



If the head has been properly redone then its pistons - so could be rings/bores or a bent rod.

Bring it to me to find out whats wrong matey

 

Depends how much its down, if its less than about 15psi its no big deal

Found this pic for you today too burt, massive so would be a good desktop.

Click on it as homo PF will make it small...
http://se555.jspeed.jp/photo/spirit_...irit05-084.jpg

Pic taken in Japan, but the car on UK plates...!

 

Lee_R21Turbo , AlexF Only the head was off, the bottom end looked/appeared fine.. bores were fine etc

heads been done and all ok


Stavros

Cool pic, saved! cheers

 

Do you know what it was before ??

If it's now less than it was before then it has to be something to do with the head strip / re-build. If he had the valves out I would have thought he should had lapped them back in when he rebuilt the head..

2p

 

If you dont know what it was before its hard to say what the problem is surely?

Like Stav says, if its very slight its not much to worry about.

 

Finding out tomorrow what the comp is on all 4, last time off memory it was:

cyl1 160
cyl2 165
cyl3 165
cyl4 160

I done a compression test just before I took it to TOTD and never drove it, So im thinking its the valves


Head wasn't done at TOTD btw...

 

Kes just took the head off, new gasket and head back on then?

Who did the head? Maybe ask them if they have any ideas.

 

simon170 yeah kes done the work, head was all done down the road, havent got the recipt to hand so dont know the company... Going down again tomorrow, didnt really have time to stop and chat today.. but just asking on what I know.


EsCosRacer

Wanna swap that R5 of yours for it?

 

Sorry to here this Radders hope you get it sorted mate!

 

hope you get this sorted Rad & give it shit on track

 

i should have run you over Radders & put you out of your misery

 

Have they got hydraulic lifters? Possibly one not been emptied properly if you had cams out? holding a valve open slightly?

 

lifters are solid in this engine & shimmed to provide the correct clearance, if the heads been apart then its likely that the shims have been put back in the wrong places meaning one of the valves is being held open slightly.
recheck all the valve clearances, thinks theres a how to guide on one of the gtir forums, not a quick job btw

 

Do a leak down test to see.


But if the head was off, should of had it striped, checked, skimmed, and valves lap'd in.

 

Dont worry its all ok

 

what did you find out then?

 

Drop a little bit of oil in the cylinder you think is low. Re do the compression test and if it comes back up in line with the other bores the ring sealing is shot.

 

tea spoonful?

 

Go on then explain what is / was the problem???

 

cars been on the rollers, running fine on all cylinders...

 

I know i just saw ya other thread