When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I just finished an Optispark replacement and a complete rebuild of ther cooling system, new radiator, heater core, WP, and hoses on my 1995 LT-1. Started it up no water leaks. At temp I had an oil leak. It materialized on the lowest point of the forward cross member, vehicle on jack stands. I surmised it was the Optispark Distributor seal.
Installed new seal after tearing down the front of the engine again (round trip 6 hours).
Important data for others replacing Optispark. FelPro Timing Cover Gasket Kit, FelPro # TCS 45956 contains 2 WP to block seals, 1 timing cover gasket 2 WP O-rings, 1 WP Seal, And 1-95644 Distributor Drive Shaft Seal. All this for $10 at O'Reilley's.
The seal can be replaced easily from the front of the cover without temoving the cover. For $10 anyone replacing the Optispark might want to change this seal. The new seal was considerably tighter than the old one!
I have a seal leking either behind one of the 3 seals or the timing chain cover.I hope its the wp or opti seal, the other 2 would be a pain in the but.
I'm seeing the same leak on my car as described, and the water pump but not opti was replaced (previous owner).
I'm thinking if I have to yank water pump, opti, crank pulley, then wouldn't it be wise to replace timing chain and timing gears as well?
My first lt1 corvette lunched a set of timing gears, chain, and bent a few valves at 40k miles. Thank God GM covered that little mess under warranty (this was 1996).
I just finished an Optispark replacement and a complete rebuild of ther cooling system, new radiator, heater core, WP, and hoses on my 1995 LT-1. Started it up no water leaks. At temp I had an oil leak. It materialized on the lowest point of the forward cross member, vehicle on jack stands. I surmised it was the Optispark Distributor seal.
Installed new seal after tearing down the front of the engine again (round trip 6 hours).
Important data for others replacing Optispark. FelPro Timing Cover Gasket Kit, FelPro # TCS 45956 contains 2 WP to block seals, 1 timing cover gasket 2 WP O-rings, 1 WP Seal, And 1-95644 Distributor Drive Shaft Seal. All this for $10 at O'Reilley's.
The seal can be replaced easily from the front of the cover without temoving the cover. For $10 anyone replacing the Optispark might want to change this seal. The new seal was considerably tighter than the old one!
Will i have to time the engine. It's a brand new lt1 crate motor. Any other tips or suggestions
Here's the difference between old and new opti seals. The old one let quite a bit of oil escape and get blown around the engine bay. Cheap and easy to do, once you get to it.
cant wait to get my car running right
Optispark Replacement Seal
