Advantage Using GE pistons on GTE Engine?

[GreenChevelleSS]

Ive got a 7MGE block that I pulled from an 87 non turbo car and Im gonna be building it to replace my 7MGTE block that totaly screwed up after even being bored and new pistons put it but that a whole nother story. Well Im gonna put everything thats in the 7MGTE block in the 7MGE block. Except for the pistons which are bored 20 over but ive got the original std size Turbo pistons that came in it but I didnt know if I should go ahead and swap them into the GE block or should I keep the higher compression GE pistons in the block thats gonna have a turbo on it. I hope your following me. I just want to know if there would be an advantage using the GE pistons on a Turbo engine or should I go ahead and swap in the GTE turbo pistons?
The most boost this car would be seeing it 9psi and im not racing it or adding any upgrades anymore I just need it to run good and be fast.
Thanks alot
Danny

 

[lagged]

you will get a lot of power at 9psi using the NA pistons. youll have to moniter detonation MUCH more closely. you are essentially limited as to how much boost you can run, however with careful tuning and the proper fuel, this becomes less of an issue.

the main thing is, the usual upgrade route, as to what is safe and what isnt, does not apply to you any longer. 15psi on stock injectors might not be too safe without tuning.

hopefully someone with some first hand experience can chime in here.

 

[CRE]

Before someone else chimes in on this: The GE doesn't have oil squirters either.... but, IIRC neither did the Group A turbos.

 

[koulee]

Before someone else chimes in on this: The GE doesn't have oil squirters either.... but, IIRC neither did the Group A turbos.

Yeah but he only wants to use ge pistons inside a gte block. so he should be alright there. The only thing you will have to becareful with is not to boost too much on the 9.1 cr pistons or you will bend/break something real quick.

 

[GreenChevelleSS]

I think you misunderstood my confusing first post. my GTE block is badly messed up, so I got the GE block to replaced it and im gonna have the other knock sensor drilled in and maybe even the oil squirters. But ive got 3 sets of pistons 1. 20 over turbo pistons 2. std bore turbo pistons 3. std bore GE pistons.
I can use either std bore pistons in the GE engine but I didnt know if I should stay with the GE pistons or swap in the turbo pistons.
The GE block had spun a rod bearing and trashed the crank and a rod. Im going to be using the Crank and Rod from my GTE block. The spun bearing has caused the piston to hit the head.
so I guess it all relies on the measurments of the piston where the wrist pin is (if it slamming into the head has made the hole bigger and not messed up that piston) wheather or not if im gonna be using the GE pistons or Not.

I wanted to know if there was an advantage of using the GE pistons with a turbo

 

[sleepersupra]

I think you misunderstood my confusing first post. my GTE block is badly messed up, so I got the GE block to replaced it and im gonna have the other knock sensor drilled in and maybe even the oil squirters. But ive got 3 sets of pistons 1. 20 over turbo pistons 2. std bore turbo pistons 3. std bore GE pistons.
I can use either std bore pistons in the GE engine but I didnt know if I should stay with the GE pistons or swap in the turbo pistons.
The GE block had spun a rod bearing and trashed the crank and a rod. Im going to be using the Crank and Rod from my GTE block. The spun bearing has caused the piston to hit the head.
so I guess it all relies on the measurments of the piston where the wrist pin is (if it slamming into the head has made the hole bigger and not messed up that piston) wheather or not if im gonna be using the GE pistons or Not.

I wanted to know if there was an advantage of using the GE pistons with a turbo

yes it will create more power do to higher compression and since your gonna leave it pretty much stock i think it will be ok. someone else will chime in but if the ge pistons are fine then use 'em.

 

[koulee]

Oh yeah, I was looking at the title of the thread while reading and writing my response

 

[IJ.]

GE Pistons will give you higher staic compression so more power off boost but less overhead for adding in boost before it detonates.

You'll need to drill and tap the block for the second KS it's 12x1.25 metric

You'll also need to sort an Oil Drain from the turbo as the NA isn't drilled and tapped.

 

[CRE]

^^^Oil return..... I knew I was forgetting something.