Spider VVT Adjustment

[Gary Cerasoli <il_formaggio@xxxxxxxxx>]

Hi all,
 
After 17 years my Spider's VVT sensor decided to disintigrate in it's holder also. I took it all apart, cleaned it up and re-installed the electromagnet with aviation PRC1422 sealant. My question is, how do I adjust the electromagnet without the tool described in the shop manual. It looks like nothing more than a shim placed between the electromagnet and pin on the cam. Then you adjust it until the pin is pushed in all the way and remove the tool. When I set it to just touch the cam pin, when activated with the throttle switch it only moves about halfway in. TIA
 
Gary Cerasoli
Jackson, GA
'86 Spider
 
 
Date: Fri, 30 May 2003 12:49:43 -0400
From: ltooz@domain.elided (LLe_2002)
Subject: 91 Spider VVT?

Hello all,
 My VVT (Variable valve timing?) solenoid fell off it's holder. The car 
barely rev over 4500 RPM, the idle started to be randomly eratic. 
According to the manual, the lock nut & the solenoid should be threaded 
tightly into the holder, but somehow, the plastic insert all worn out and 
separated from the case (another great design from alfa?).
 After taking the whole thing apart, pry off all the plastic around the 
lock nut, I found a way to secure the lock nut & the solenoid to the 
holder. Drill a hole on the holder case, using a screw thru this hole to 
press against the lock nut after the adjustment (setting the solenoid 
to touch the VVT pin). The Nut is tightly in place, turn on the engine, 
rev it up and I can see the solenoid activated through the peek hole 
pushing the VVT rod in and out.
 The car revs so smoothly now to 5500 RPM (with over 100,000 miles I 
don't really want to push it with original engine). This little solenoid 
really make the difference. The idle is stable.
 I have NO IDEA what this little push rod and solenoid do, the manual 
doesn't say much. It does make or break the car performance. If anyone 
who understand what it does, please let me know.
 The car passed smog 2 days before this VVT fellout of the holder, it 
failed once @ idle due to eratic RPM (loose). Luckily the second time it 
passed.

Thanks,

Louis Le
91 Spider Veloce
Fremont, CA
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