 '72 914 Track Car - Valve Adjustment Question, Valve Adjustment - 1.8L bored to 2.0L |
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| leety |
 Feb 18 2020, 01:39 PM
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#1
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Newbie  Group: Members Posts: 13 Joined: 28-May 16 From: Malibu, CA Member No.: 20,042 Region Association: Southern California  |
Hi I'm new to this car and trying to figure out where the exhaust valves should be set.
I was told when I acquired the car that it is a Type IV 1.8L motor bored to 2.0L That's all I know about the motor build, not much I know. It appears .15mm is universally accepted on intake for all type IV motors. It appears the stock 1.8L & 2.0L motors exhaust valves are not set the same the 1.8L is at .15mm while the 2.0L is set at .20. My question is do I go .15 or .20 on the exhaust and why? |
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| brant |
Feb 18 2020, 03:15 PM
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#2
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914 Wizard Group: Members Posts: 12,010 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains 
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QUOTE(leety @ Feb 18 2020, 12:39 PM)  Hi I'm new to this car and trying to figure out where the exhaust valves should be set. I was told when I acquired the car that it is a Type IV 1.8L motor bored to 2.0L That's all I know about the motor build, not much I know. It appears .15mm is universally accepted on intake for all type IV motors. It appears the stock 1.8L & 2.0L motors exhaust valves are not set the same the 1.8L is at .15mm while the 2.0L is set at .20. My question is do I go .15 or .20 on the exhaust and why? a stock 2.0 had sodium filled exhaust valves to help with increased heat I would follow factory settings for a sodium exhaust valve that stretches many folks do not use sodium exhaust valves as they are more expensive than stainless steel Many big bore engine rebuilds do not change the stock valve sizes as it is expensive to cut new valves, pockets, and seat.. did your engine builder use stainless valves? or sodium? are your exhaust valves stock 1.8 valves size and material? (do you have 3 bolt 2ltr heads, or 4 bolt 1.8L heads) brant |
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Posts in this topic
leety '72 914 Track Car - Valve Adjustment Question Feb 18 2020, 01:39 PM
leety
Hi I'm new to this car and trying to figure ... Feb 18 2020, 06:36 PM |
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