Couple Concerns
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Joined: Apr 2002
Posts: 186
You weren't wrong, just a minor technicality. :)
But yeah, I agree. Those price tags are more extreme than the parts they are attached to. If it were even $300 for the set, I'd probably do it, but not for $550. They could have at least made it a roller instead of that stiff-back/linkbelt design. Yet, it remains to be the only aftermarket 93-94 timing set I've found that is worth mentioning...
The '95 set isnt cheap either for that matter. $420? <Gag>
But yeah, I agree. Those price tags are more extreme than the parts they are attached to. If it were even $300 for the set, I'd probably do it, but not for $550. They could have at least made it a roller instead of that stiff-back/linkbelt design. Yet, it remains to be the only aftermarket 93-94 timing set I've found that is worth mentioning...
The '95 set isnt cheap either for that matter. $420? <Gag>
Last edited by Alex94TAGT; Feb 23, 2004 at 03:46 PM.
Registered User
Joined: Oct 2001
Posts: 534
From: Avon, IN, USA
I would just use a stock replacement timing chain. It is very rare to hear about someone breaking a timing chain because of "too much horse power". It can happen but, I don't know anyone who has. I would say that 99% of all broken timing chains are because they are old and stretched. I put a stock replacement on my engine when I built it and I am expecting around 600fwhp on N2O.
Dustin
Dustin
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Joined: Jul 2003
Posts: 2,945
From: Fort Benning, GA
Originally posted by Alex94TAGT
Spinner -- what timing set is in your car currently? Have you installed that cam in your sig, or are you just getting ready to? I believe you've been given some faulty information regarding timing sets.
The 1993-1994 opti is driven by a splined shaft fixed to the cam gear. The 1995-1997 opti is driven directly by an elongated cam dowel pin (no splined shaft), and the 95+ cam gear has a larger center opening to accept a 'nub' on the back of the vented opti (which passes thru the timing gear to fit in an enlarged 95+ cam snout opening). Because of this enlarged hole on the cam gear, the 93-94 splined shaft cannot be incorporated on a 95+ timing set for use on a pre-95 vehicle. Thus, you wont have a working ignition system on a pre-95 vehicle.
In short, the 1993-1994 and 1995-1997 optispark drives are different, the cam gears are not the same, and there is no way to incorporate a 1995+ timing set into a pre-95 vehicle without upgrading optisparks and supporting parts (timing cover, etc.). The LT4/HD timing set is made for 1995 and later vehicles.
This is why us pre-95 guys have so much trouble with timing sets -- we have very limited options with the unvented, spline-driven opti. The 93-94-specific Lunati set offered by Summit is one of those few options, which is why this thread was started.
If you have found a way around this, PLEASE let us know!!! Otherwise, I'll assume you've been given bad info.
HTH
Spinner -- what timing set is in your car currently? Have you installed that cam in your sig, or are you just getting ready to? I believe you've been given some faulty information regarding timing sets.
The 1993-1994 opti is driven by a splined shaft fixed to the cam gear. The 1995-1997 opti is driven directly by an elongated cam dowel pin (no splined shaft), and the 95+ cam gear has a larger center opening to accept a 'nub' on the back of the vented opti (which passes thru the timing gear to fit in an enlarged 95+ cam snout opening). Because of this enlarged hole on the cam gear, the 93-94 splined shaft cannot be incorporated on a 95+ timing set for use on a pre-95 vehicle. Thus, you wont have a working ignition system on a pre-95 vehicle.
In short, the 1993-1994 and 1995-1997 optispark drives are different, the cam gears are not the same, and there is no way to incorporate a 1995+ timing set into a pre-95 vehicle without upgrading optisparks and supporting parts (timing cover, etc.). The LT4/HD timing set is made for 1995 and later vehicles.
This is why us pre-95 guys have so much trouble with timing sets -- we have very limited options with the unvented, spline-driven opti. The 93-94-specific Lunati set offered by Summit is one of those few options, which is why this thread was started.
If you have found a way around this, PLEASE let us know!!! Otherwise, I'll assume you've been given bad info.
HTH
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