Valve Settings

[stevem099 0]

Hi all, just rebuilding my head and have come to setting valve clearances. mine are to tight (worst is by .20) i really need this car as its been off the road for 2 weeks now at my parents in kent i live in brighton,

problem is everyweres shut on sunday,

my question is can i just adjust this with a little bit? I.E file, or wet n dry. i know it may sound silly but im desprate.

many thanks

steve

[24seven 104]

When I rebuilt an 8v head after lapping the valve seats the clearances were all a little too tight, so I very carefully ground them down on a very fine oilstone with some light oil on it until I got the sizes I wanted. It's also recommended to set the tolerances slightly tighter than factory figures, though off the top of my head I can't remember the numbers. No doubt someone will come long and clarify that.

[DamirGTI 344]

If you have friendly Peugeot or Citroen garage nearby , write down shim dimension which you need (roughly at least) to re-set the clearances , pop down and ask them kindly if they're willing to swap i.e. you leave them yours and they give you another set of shims ... if they're grumpy , like on monday morning , few quid for a beer helps

 

From my perspective the shims are too hard for hand grinding , cos they have some kind of hardening coating on top (like followers)

 

Damir

[Bottrill 0]

Not your original question but this may help.

 

"The Peugeot specified exhaust valve clearance of 0.35 - 0.45mm is too large in my opinion and can lead to a noisy valve train. Similarly the recommendation of 0.25mm from some of the performance cam manufacturers is too small and an engine that gets very hot could see the valves being held off the seats and burning out. I use 0.30 - 0.35mm on exhaust valves and 0.20 - 0.25mm on inlets. That applies to any cam, performance ones as well as standard ones."

 

Copied from the Puma Race engines site.

 

I used these tollerances when building mine and all is well.

Edited February 1, 2010 by Bottrill

[stevem099 0]

thanks all for your help and advice, head back on car now and shes running really sweet,

many thanks

steve

[stevem099 0]

Arrr spoke to soon. shes been from kent to brighton around all week now to swindon and this morning do you think i can get it to start..

now sure if its getting a spark due to it smelling of fuel alot.. dont suppose anyones in swindon with a nice collection of tools??

if not i suppose its greenflag time lol.. this gti ownership is proving testing to say the least.

cheers

steve