Head Gasket Question

Keep it on topic, it will make it easier to find what you need.
Post Reply
mchalem89

Head Gasket Question

Post by mchalem89 »

I'm changing the head gasket on my 80 spider and I was wonder if you guys use any copper coat on the gasket and any loctite on the threads? I'm pretty new to this and I want to make sure I do this right.
User avatar
124JOE
Posts: 3141
Joined: Fri Jun 24, 2011 7:11 pm
Your car is a: 1978 124 fiat spider sport 1800
Location: SO. WI

Re: Head Gasket Question

Post by 124JOE »

its best to install head gasket and bolts clean and at tourque .but the last guy used silicone on the bolts
when you do everything correct people arent sure youve done anything at all (futurama)
ul1joe@yahoo.com 124joe@gmail.com
narfire
Posts: 3959
Joined: Sat Dec 27, 2008 2:14 am
Your car is a: 1980 124 spider
Location: Naramata B.C.

Re: Head Gasket Question

Post by narfire »

Both surfaces clean, dry,and flat. Nothing on the head gasket. Good idea to chase the head bolt holes with correct size tap.Put a drop of oil into each bolt hole. Tighten to the pattern and torque over two passes. Drive for about 100 kms or so and re-torque.
This was explained to me when assembling my engine years ago and has worked just fine for the several times I've repeated the process.
Chris
80 FI spider
72 work in progress
2017 Golf R ( APR Stg. 1)
2018 F350 crew long box
mchalem89

Re: Head Gasket Question

Post by mchalem89 »

Thanks for the great info. I reused my bolts and snapped the last one off in the block and It was a real nightmare to remove. I'm assuming it was from fatigue because the threads were clean and i was able to hand turn another bolt all the way in. I even torqued it in 4 steps. I ordered all new bolts and a new head gasket from IAP so i should be good to go this weekend. With oil on the head bolts you never had a problem with coolant leaking on top of the head?
BEEK
Posts: 1833
Joined: Wed Mar 24, 2010 10:45 pm
Your car is a: 1975 Spider
Location: clermont fl

Re: Head Gasket Question

Post by BEEK »

if you are using a "print o seal" gasket, a gasket where there are silicone tracings around water passages, dry only. if you are using a graphite head gasket, i would use copper coat. i would also use a very small amount of light machine oil on the threads. dry threads in dry holes mean trouble.
Automotive Service Technology Instructor (34 year Fiat mechanic)
75 spider
, 6 Lancia Scorpions, 2018 Abarth Spider, 500X wifes, 500L 3 82 Zagatos. 82 spider 34k original miles, 83 pininfarina, 8 fiat spider parts cars
son has 78 spider
Post Reply