just done a compression test cos my RS is smoking on tickover and startup etc, all four cylinders ran eaxactly the same at 10 bar. c

can any1 tell me what im looking for etc etc or what it should be.

Thanks in advance
Matt

 

could be the head such as a valve not seating correctly

a leak down test would be a lot more concise

or it could be the turbo :S

 

compression is fine. Valve stem oil seals most likey cause.

 

turbo mate, compression is okay around 140-145psi across the board, get rid of the shitty T2 and get a proper hybrid stage 2 T3.

 

right i feel better knowing my rings or anything havent gone now, keeping an eye out for a nice t3 now, rdy for a conversion.

Thanks for ur help guys
Matt

 

Good stuff, you won't regret a T3 conversion its the most effective mod i've done, mines only a stage 1 turbo but i'm on standard boost but with your spec should go for a stage 2 it will work perfect on your engine and not too laggy, stage three will be too laggy.

 

my money is on turbo oil seals

 

1 bar is 14.7psi. so 10 bar is 147psi... ish. this is healthy for a turbo engine. i reckon your smoke is cos of worn valve stem seals, they doont cost a lot, only a couple a quid each and you can change em without takin the head off. do that before you spend loads on turbo stuff. little tip- you can remove the plugs and fill up the combustion chamber with lots of string. turn the engine carefully via the bottom pulley till it locks up and you can knock the valve cotters out with a socket and mallet. i've done it to several cvh's and its worked a treat.

 

If you get smoke on over run (between gear change) without a doubt turbo, if you can't see then get a friend to drive behind you boot it then let off and a puff of smoke will appear turbo may not be fucked but seal are getting worn.

 

cool ill get some1 to have alook behind me see what it does,

thanks again guys
matt

 

Matt...........haven't you changed that turbo yet????

You don't seem to of mentioned you are running a standard T2 @ 16psi

I said Turbo didnt i