Paul,
All the studs are 8mm for the intake/exhaust. The rocker studs are 10mm. The
thermo studs are 10mm but I would recommend using bolts instead because of
rust issues. Some people won't agree but I found it almost impossible to
remove the thermostat housings because of rust. You can always put a
helicoil in so the threads aren't damaged. I see that in new HP aluminum
heads for American cars.
The studs used by Nissan are an interference fit meaning no locktite is
needed. They have a slightly different thrread pitch
Mike
----- Original Message -----
From: "Paul" <9laser3@bright.net>
To: <datsun-roadsters@autox.team.net>
Sent: Wednesday, April 25, 2001 5:05 PM
Subject: 1600 head bolts and stud sizes
> Okay, I need to get new studs for the exhaust/intake manifolds, rocker
> arms, and thermostat housing. And the two bolts that hold the plate on
top
> of the thermostat housing. Any guesses on thread sizes and lengths?
>
> Paul
> OROC
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