seldawg

Ok guys, I am looking for some solid opinions on what direction I should take with the rebuild project. I have a 12a pulled from an 83 gsl on the bench. The idea is to pull the seized motor in the 84 gs and replace with the rebuild. The rebuild has supposedly 20 k on it, I just freed it up from carbon lock last night cuz it sat for almost two years. The oil looks great still and now that it is turning freely it feels really good and tight!! I want to build a supercharged 12a but money has become a slight issue (isn't it always) lately. My question is this: Should I take what appears to be a solid motor and tear it down for porting (which I would like to do anyway ) and put all the interior components in the motor for SC ( not sure what all components yet but I do know how to use the search on the forum ) so that it is ready for a SC. Also, can I do the things required for SC to the interior of the motor, but still put the RB intake and carb back on so i can drive it this year, and then when I do get the SC, bolt it on and do some tuning and away I go!?!? I would just hate to have this motor on the bench and have the ability to build it the way i want it, but not be able too because of cost and being able to drive the rx. It will be a long season if I have to look at the rx in the garage but can't drive her cuz I built a motor that runs great but I can't use it till I spring for the supercharger!! Talk about torture!!!! Thanks for your opinions in advance!!!

seldawg

Also, please refrain from turning this thread into a debate over SC or turbo. We all have our opinions when it comes to these two and it comes down to personal preference. I myself just like to be different thus the reason to go away from the norm of turbo's.

Latin270

Why not just drop the rebuilt motor in the car and have some fun driving it? Beats thinking about doing this or that and walking.

trochoid

iTrader: (6)

What are your hp goals and use/purpose for the car? You made no mention of those and they are the first decisions to make before considering any mods. Since you most likey won't need a high rpm build with the SC, you can probably skip some of the more expensive items if you decide to rebuild first.

bad 83

iTrader: (3)

If you know for a fact what parts were used to rebuild this engine, then do not worry about it. If you do not, I would tear it down for sure. A regular street port would be good. Upgrading the corner seal springs to the 3rd gen style is a must. Going with solid corners would be a good idea. New cryo treated apex seals to handle the heat of the S/C. Then inspect and replace as needed your hard seals, rotor bearings and stationary bearings. These things would be fine for any rebuild. Or you can leave it be and take a chance.

seldawg

I really do not have a hp goal and my basic driving style is somewhat agressive but little to no racing. I currently run the RB rr header and streetport exhaust with Holley carb and intake on a stock motor with no porting. It is more a personal project I have wanted to undertake for some time. Now that I have a motor on the bench I am thinking build it for the SC, but still possibly put the RB products back on so I can drive it this summer, and then when I have the cash purchase the SC and bolt on with no worries of having to due the internals. I have not spent a lot of time yet on what I should do on the internals but I think as you mentioned, I might be able to skip a few things and still be able to handle the SC.

seldawg

not one for leaving things be and taking chances. Much rather do it right once. I do not know for sure what parts were used to rebuild the motor, only that the previous owner had it rebuilt. For porting I have to dissassemble anway which I intend to do.

Solid corners???

If my memory serves me correctly the 12a rotors can handle a supercharger but the apex seals can not for extended periods of time.

seldawg

If i was walking then it would be a different ballgame but this is my toy, not my daily driver.

j9fd3s

iTrader: (3)

+1!