ssmokeyy

I'm thinking about replacing the head studs for now and build a second motor to go past 600 wheel. Has any one install head studs and had no leaks after? 03 350z vq35de

Conway_160

iTrader: (1)

If your doing head studs mise well pull heads and put in new head gaskets, why risk it?

SikkyMFG

iTrader: (2)

It is possible to do however not really ideal.

If you do go that route I recommend pulling all the spark plugs out and cranking the engine over incase any water seeps in.

ssmokeyy

I don't mind replacing the gaskets but I don't have time to send out the heads for the machine shop. Has any one used felpro permanent torque MLS gaskets on are motors? I used them a lot on dsm's and they would take 20 psi no problem.

MicVelo

^^^ These.

Problem with doing a "head-on" bolt/stud replacement is you're un-torquing the head bolts and even doing it one at a time, you're not likely to get the proper torque readings on a de-compressed then re-compressed head gasket if you don't release torque on all, then re-torque in proper sequence.

So as stated above, if you've gone that far, why stop on the last lap?

Caveat: It may work on a VQ OK, I can't say for sure; but I've seen enough finicky gasket (all kinds, not just head gaskets) kludges on customer engines back in the day to say, "don't risk it".