Series 4 cam ID - Alfa Romeo Bulletin Board & Forums
 
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post #1 of 4 (permalink) Old 03-07-2006, 03:40 AM Thread Starter
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Series 4 cam ID

Hi

Can anyone please tell me the part number for the cams in a series 4 (91-94) US Spider. Also if you have lift and duration data I'd be grateful.

Many thanks
Simon

91 Spider, Dover MA
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post #2 of 4 (permalink) Old 03-08-2006, 03:51 PM
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The 91 Alfa parts fiche lists the exhaust cam as part #60516605. This crosses to 105.20.03.200.00 in the old part number system. This cam was fitted to the US 2l engines since day one (1972). Specs for this cam can be seen here.
The intake cam is listed as #6049786. The 1990 interchange does not list this number so it would appear that it is specific to the S4s. Sorry, no specs on this one.

Jim

Series 2 USA 1750 GTV (in Series 1 European clothing)
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post #3 of 4 (permalink) Old 03-08-2006, 04:52 PM
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Will the jury please disregard the witnesses last statement.

Did some digging and found the intake cam specs.
valve clearance - 0.015-0.018"
nominal lift - 11mm
duration - 299*12'
timing - opens 24*44' to 17*44'. Closes 94*28' to 101*28'.
lobe center - 125*30'

Jim

Series 2 USA 1750 GTV (in Series 1 European clothing)
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post #4 of 4 (permalink) Old 03-08-2006, 07:35 PM Thread Starter
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Talking Great work

Jim

Thats perfect. Thank you VERY much

Simon

91 Spider, Dover MA
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