Twin Spark Valve Clearance Spec? - Alfa Romeo Bulletin Board & Forums
 
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post #1 of 7 (permalink) Old 06-28-2019, 10:25 AM Thread Starter
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Twin Spark Valve Clearance Spec?

What is the recommended valve clearance spec for the standard 2.0TS engine? (From a 1990 Euro 75)
Your help is greatly appreciated!

Steve O'Brien
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post #2 of 7 (permalink) Old 07-26-2019, 11:18 AM
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According to my service manual, the 2.0 TS 8V engine has the following valve clearance specs:

Intake Side: 0.38mm to 0.45mm

Exhaust side: 0.43mm to 0.50mm

~Z.F.
1995 Alfa Romeo 164 Twin Spark since 2001
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post #3 of 7 (permalink) Old 07-26-2019, 02:41 PM
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Hey Steve,

I'm down in Scripps Ranch and am building a Twin Spark to put in my 66 Super. What is your Twin Spark in?

Mike

Mike
1969 GTV 1750
1966 Super
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post #4 of 7 (permalink) Old 07-27-2019, 01:32 PM Thread Starter
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1959 2000 Spider

The more generous engine bay in the Touring-bodied spider made keeping the standard Motronic setup an easy choice for me, but your Super is a bit tighter. You can use a standard oil pan, whereas I had to make my own to fit this chassis.
Good Luck!

Steve O'Brien
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post #5 of 7 (permalink) Old 07-28-2019, 09:30 AM
Richard Jemison
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Valve lash

I suggest a bit smaller clearances. Intake .016" Exhaust .018"

Richard Jemison
RJR Racing

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post #6 of 7 (permalink) Old 07-28-2019, 10:18 AM Thread Starter
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Too late

Too late....I already set them to .017 and .019. I got the shims from OKP since it is hard to get twinspark stuff domestically. I just have to wait for a bit of seat collapse to get to your tighter spec.
Thanks for the suggestion.

Steve O'Brien
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post #7 of 7 (permalink) Old 07-28-2019, 10:57 AM
Richard Jemison
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lash

Quote:
Too late....I already set them to .017 and .019. I got the shims from OKP since it is hard to get twinspark stuff domestically. I just have to wait for a bit of seat collapse to get to your tighter spec.
Thanks for the suggestion.
If it`s a new fresh valve seat/valve re-finish it will occur during breal-in and use...

Richard Jemison
RJR Racing

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