Well I had some dis-appointing news on Friday, the special valve seals have been discontinued (no room for the OEM style), so this has effectively squashed getting the turbo motor ready before the weather turns unless some NOS parts are found. I'd like to ask for a few folks help, to see if your local parts warehouse has stock.
The seals were made by Beck/Arnley PN 022-1518.
So in light of this I've started installing the turbo on the early motor that already in the truck. Once the turbo exhaust flange is arrives and the required gaskets it will be a days work to finish the turbo install and fire the truck. I've removed the big waste gate spring so it should open about 4-5 psi which is fine for the stock engine. After ensuring the turbo and tune up are ok I might turn the wick up to 7-8 PSI.
Wait and see...
If you find the seals - need 6 packages of 4 seals please PM me.
Thanks
Marc
51 GMC 4.2 turbo Can't solved today's problems using the same technology/thinking that created them
