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Getting tappets close to spec when cold

Tech Talk for Nissan owners.

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Posts: 317
Joined: Thu Dec 11, 2008 8:22 pm
Location: Oriental 4WD Adelaide

Getting tappets close to spec when cold

Post by mhgill »

I've just done a head gasket on my TB42, i need to get it warm so I can set the tappets, but it pops and backfires and makes bad noises that I dont want to run it too long for fear of damage, how should I set the tappets cold so they will be close-ish?
GQ 5" coils 35" Muds FOR SALE
98 GU 4500 ST Stock.
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Joined: Sun May 18, 2008 4:24 pm
Location: bogged in a hole near you

Post by BeNoS »

ive never done this or had to do them but id say do em but just get make the cap a couple of thou bigger and should allow for the expansion when hot. and make the exhaust cleareneces a little bigger than the intake ones as they get hotter again.
hope this helps.
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Joined: Wed Nov 01, 2006 11:41 pm
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Post by offgas »

Hi there,
I had my 91 gq at a mechanic's (specialty --- patrols) and he said to set both exhaust and inlet at 0.33mm cold. After I adjusted mine to this it runs sweet.(gained an extra 100km's from a tank of gas)
offgas.
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