Valve Clearance Issues

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BakersChoice
Posts: 86
Joined: Wed Mar 18, 2015 1:17 am
Your car is a: 1981 Spider

Valve Clearance Issues

Post by BakersChoice »

So I've been hearing some valve chatter under the hood for awhile now and decided that since I had an off day I would look into the valve clearances. It turns out my valves are way out of adjustment. Here are the numbers I came up with:

Cylinder 4 - Exhaust: .047in. Intake: .030in.

Cylinder 3 - Exhaust: .036in. Intake: .030in.

Cylinder 2 - Exhaust: .031in. Intake: .026in.

Cylinder 1 - Exhaust: .0.015in. Intake: .026in.

I've revved the car up to 4500 rpm on one occasion in this condition but didn't punch it past that because the power would cut out around that mark, probably because the valves were floating a bit :oops:. I've been easy on the car after that knowing that the valves needed to be adjusted but I'm worried I might've damaged something on my fairly new rebuilt head. What are your thoughts?
131
Posts: 672
Joined: Sun Nov 14, 2010 1:13 am
Your car is a: 1982 131 Superbrava warmed 2.0 litre.
Location: Tasmania, Australia

Re: Valve Clearance Issues

Post by 131 »

You won't get valve bounce at 4500, not going to happen. Adjust clearances and enjoy.
Mick.

'82 2litre 131, rally cams, IDFs & headers.
klweimer
Posts: 550
Joined: Tue Mar 27, 2012 7:45 am
Your car is a: 1982 Spider 2000
Location: Arvada, Colorado

Re: Valve Clearance Issues

Post by klweimer »

+1
BakersChoice
Posts: 86
Joined: Wed Mar 18, 2015 1:17 am
Your car is a: 1981 Spider

Re: Valve Clearance Issues

Post by BakersChoice »

Alright thanks!
So Cal Mark

Re: Valve Clearance Issues

Post by So Cal Mark »

were the clearances set on your newly rebuilt head when it was assembled?
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