Author Topic: Will head bolt length make any difference?  (Read 38 times)

Offline GR40

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Will head bolt length make any difference?
« on: April 10, 2019, 09:14:14 am »
So I just had some head work done to my engine (enlarged valves) and the shop that send me all the hardwear to reinstall the head send me shorter head bolts. The g40 engine has 95-96mm long and the ones I got are 92mm long. The probable reason for longer bolts on the g40 engine is the hicker head gasket, compared to the rest of the 8v vw engines. I needed the car on the road asap so I went and installed the head with the 92mm ones. Now my question is should I replace them with the proper longer ones or are they fine being 3mm shorter. The trick here is I am planning on making  more power now that I have bigger valves. Anyone has any experience on the matter?