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Optispark & waterpump question.
Thread Starter
6th Gear
Joined: Mar 2007
Posts: 6
Likes: 0
From: Stafford VA.
Optispark & waterpump question.
Hey guys, newbie here, although I've read the posts and been a owner of 2 vettes for 10 years. It's time to do the optispark & waterpump on my 92', It only has 28K miles, but has been a garage queen for most of its life. My question is which optispark should I purchase? The OEM type for that year, or a later year & modify it for to add the vacumn to?
Any recomendations on where to purchase? Eckler's ? GM Parts Direct,etc?
It has been a great runner, but has developed a high rpm miss, so I'm starting with what I think is the weakest link.I'm also doing the water pump at the same time, and fuel filter. It has Platium Plugs & new wires.
Should I also get the coil? Any other suggestions?
Thanxs for any help you can give me. Save the Wave ~~~~
Any recomendations on where to purchase? Eckler's ? GM Parts Direct,etc?
It has been a great runner, but has developed a high rpm miss, so I'm starting with what I think is the weakest link.I'm also doing the water pump at the same time, and fuel filter. It has Platium Plugs & new wires.
Should I also get the coil? Any other suggestions?
Thanxs for any help you can give me. Save the Wave ~~~~
Safety Car
Joined: May 2003
Posts: 4,283
Likes: 0
From: Houston Texas
In order to upgrade to the newer style opti, you would have to change the timing cover and chain also. Don't know how involved you want to get with this. MSD makes one which is vented like the later style ones. Probably more money than a factory one though. Some people take apart their early opti's and seal them to keep out moisture.
Le Mans Master
Joined: May 2005
Posts: 7,355
Likes: 2,280
From: Central Maryland
I highly recommend that you do NOT install a replacement OEM Gen-1 Opti on your car. It'll be just as deficient as the one you're taking off, because there were no improvements made.
Converting it to a Gen-2 unit is not worth the expense and hassle, in my opinion. Requires new camshaft, timing cover, etc.
Consider the DynaSpark or MSD aftermarket units as better options. The Dyna is a great product, with a solid track record in the field. I installed one on my '94 back in 2004, and it's been great. The MSD is relatively new to the market, thus there isn't a lot of field history on it yet. Both the MSD and Dyna are bolt-on replacements for the OEM Opti.
Be well,
SJW
Converting it to a Gen-2 unit is not worth the expense and hassle, in my opinion. Requires new camshaft, timing cover, etc.
Consider the DynaSpark or MSD aftermarket units as better options. The Dyna is a great product, with a solid track record in the field. I installed one on my '94 back in 2004, and it's been great. The MSD is relatively new to the market, thus there isn't a lot of field history on it yet. Both the MSD and Dyna are bolt-on replacements for the OEM Opti.
Be well,
SJW
Burning Brakes
Joined: Nov 2004
Posts: 1,107
Likes: 0
From: RI
here's the writeup but I agree with SJW. I purchased, installed and ran a new oem opti and it was defective right out of the box. Bought a MSD and all is well
http://www.corvettefever.com/howto/16758/
http://www.corvettefever.com/howto/16758/
Melting Slicks
Joined: Nov 2002
Posts: 2,471
Likes: 2
From: 1993 Quasar Blue 'vert Scottsdale AZ
IMHO, upgrading to a 95-96 opti is not a bad choice. You will have to install a new timing-chain cover (95) and harness, but they are so much better built and much cheaper to replace. As long as you keep them dry, the opti-spark is much more reliable then most people think.
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Thread Starter
6th Gear
Joined: Mar 2007
Posts: 6
Likes: 0
From: Stafford VA.
Summers closing in on me, and I need to finish this work. Thanxs in advance, have a great day...Save the Wave ~~~~