So I picked up a spare motor from ebristol. Full motor, but already kinda in pieces. Valves are a little dinged up, head is off, and the tensioner guide bolt broke. Perfect candidate for a full build.

Here were my ideas for plans

I'm going to have the whole bottom end cry-0 treated. Crankshaft, block, stock rods, ect. Our rods are strong in stock form, so cry0 treating should give them more than enough strength.

Forged pistons, I'm unsure on the compression ratio, thinking of sticking with the stock 9.5.1 but thought of maybe going with a little higher compression, that's something I wouldn't mind some input on.

Already running the hahn s20g, was planning on sticking with that for the time being, may go bigger eventually.

After talking with ebristol, we discussed having the motor professionally balanced, so I'm going to have that done as well.

I'm planning on having the head ported & polished, along with aftermarket valves and springs, maybe cams.

Aftermarket clutch/flywheel.

Finally, I'm going to make sure to update the timing chain tensioner, (to the new style), put in a new gasket behind the crank pulley. Anything else I should do as a "preventative"?

I will most likely tear it down completely this week, figure out what i'm gonna keep and what I'm going to get rid of.

My main goal is do have an extremely solid motor that can take a pounding and still be more powerful than stock.

 

I would say that you don't really need aftermarket valves, the stock ones are plenty strong. But if you say the valves currently on the head are banged up, I can see why you may go with aftermarket ones.

If you plan on doing all of this, definitely get cams! Makes no sense not to IMO.

 

Yeah, I plan on doing all of it, its not a rush project because the motor in my cobalt now is perfectly fine, I hope to have it done by spring but no rush. Whats a solid cam setup for a turbo lsj? That's really something I'm not familiar with.

 

I'm not familiar with turbo cams, just blower cams which I have.

 

Jordan I would def have the motor balanced by a shop internally. Have the block and head decked to a mirror finish. Drill out you block for 1/2" arp head studs.( Reccommend girdle block with 1/2 studs) Adds a lot of strength Keeping the head planted. Port and polish the head. I Would stay with the stock valves just have the bowls polished. Upgrade the valve springs. As for cams get zzp stage2 turbo cams. Cryo is a good plan for parts. Delete the balance shafts completely. If you plan on going over 400-450hp buy after market rods. As for the block I would get it girdled or go with cryod sleeve, or dart sleeves. Micro polish the crank. Get your piston side walls coated teflon and top ceramic coated. Changing the compression is your call. Do a full return fuel pump kit. Wire in a second pump. ID1000cc injectors. Run e85 there's a ton more just a matter what you want to do or throw at it.