valve spring replacement
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: valve spring replacement (Barrier)
When I installed 1.6 ProMagnums I used Comp Cams P/N 981 springs and their variety shim pack to get the proper installed height as I tossed the stock tin oil shedders that had been atop the stock springs. These springs are a single spring with damper and have stock diameter; they have a little higher seat pressure and spring rate than stock (for my 1988 L98), but should be fine for a stock motor. Of course you could get a set of stock springs from your Chevy dealer. You realy don't want to use a stronger spring on a stock setup.
Since I intend to up the rev limit I installed 7/16" studs, Ti retainers and 10deg locks along with hardened pushrods and guide plates.
I got the lower Viton valve seals and upper O-rings from a local Chevy dealer.
The calipers to measure spring installed height came from Sears.
I didn't have compressed air so some Nylon rope did the "trick".
I found that removing the damper and water pump pulleys facilitated turning the crankshaft by hand. Once the damper bolt began to unscrew so I had to install long bolts into the camper to turn the crankshaft CCW.
Since I intend to up the rev limit I installed 7/16" studs, Ti retainers and 10deg locks along with hardened pushrods and guide plates.
I got the lower Viton valve seals and upper O-rings from a local Chevy dealer.
The calipers to measure spring installed height came from Sears.
I didn't have compressed air so some Nylon rope did the "trick".
I found that removing the damper and water pump pulleys facilitated turning the crankshaft by hand. Once the damper bolt began to unscrew so I had to install long bolts into the camper to turn the crankshaft CCW.
Thread Starter
Drifting
Joined: Sep 2001
Posts: 1,875
Likes: 27
From: Long Beach NY
Re: valve spring replacement (65Z01)
Thanks 65ZO1, this will be a summer project, the oil smoke at start is getting to me so I might as well do the springs. I guess I'll go with stock.
Barrier :)
Barrier :)
