Georgia Fiero Club Forum

All Things Fiero => Tech Tips, Tech Questions => Topic started by: Roger on December 17, 2017, 03:23:47 pm

Title: Exhaust manifold
Post by: Roger on December 17, 2017, 03:23:47 pm

Exhaust manifold

Bolts or studs?

And why?

Title: Re: Exhaust manifold
Post by: GTRS Fiero on December 17, 2017, 04:38:32 pm

Mine uses bolts, for aesthetic reasons.  I haven't been pleased with the results of using studs, such as on the EGR valve.

The theory with studs was that they were less likely to break off in the head, easier to remove if they broke off, and easier to lube.

Title: Re: Exhaust manifold
Post by: Fierofool on December 17, 2017, 07:02:32 pm

Studs because there are 2 points of release instead of just 1 in case of seizure.

Title: Re: Exhaust manifold
Post by: scottb on December 18, 2017, 08:24:33 am

I would recommend copper based anti-seize. It works much better than graphite based.

Title: Re: Exhaust manifold
Post by: f85gtron on December 18, 2017, 04:16:00 pm

Studs because,
- as stated before, more options other than drilling heads,
- adds more options to catch your knuckles on so you'll have more "street cred" when Rollin' with your homies to the galaxy diner.  ...just sayin'

Title: Re: Exhaust manifold
Post by: Roger on December 18, 2017, 05:01:34 pm

Thanks!
Got the exhaust stud kit on the way.

Title: Re: Exhaust manifold
Post by: Fierofool on December 19, 2017, 08:45:45 am

Current thread on PFF about this subject.
http://www.fiero.nl/forum/Forum2/HTML/140707.html

Title: Re: Exhaust manifold
Post by: Roger on December 19, 2017, 03:19:33 pm

Wow! Some actually go info on pff. I'll let MikeMac know. He will be doing all of my upcoming work.

Title: Re: Exhaust manifold
Post by: Sarge on December 23, 2017, 03:16:07 pm

I know you have made your choice but another reason for studs it also help keep the gasket lined up on the install