turbo motor compression
07-16-2007, 06:23 PM
#1
Staging Lane
Thread Starter
iTrader: (3)
Join Date: Jan 2003
Location: houston, tx
Posts: 79
Likes: 0
Received 0 Likes
on
0 Posts
turbo motor compression hey guys/gals...here is my situation
I'm picking up a 98Z from my buddy. The car has an LME built 347. I believe the compression is in the 11s...I think it is 11:1. To date the car has been a beast in NA forum. The car has run a best of 11.50 @ 118 with a 4l60 that was overshooting 3rd gear. The guys at LME said that the motor will handle a 200shot with no problem, and originally that was the plan, but I want to boost it.
I'm planning on doing a custom turbo set up, most likely I am going with dual 60-1s. I'm shooting for 600whp.
My question is this: Is this compression too much for turbo? Even in low boost?
My options are to just yank this motor and sell it as it is and build a new motor starting with a 6.0 block....or.....trying to lower the compression on this motor and boosting it.
Also, what can I do to lower the compression on the current motor without changing pistons out.
anybody have any suggestions? I appreciate any help in advance.
I'm picking up a 98Z from my buddy. The car has an LME built 347. I believe the compression is in the 11s...I think it is 11:1. To date the car has been a beast in NA forum. The car has run a best of 11.50 @ 118 with a 4l60 that was overshooting 3rd gear. The guys at LME said that the motor will handle a 200shot with no problem, and originally that was the plan, but I want to boost it.
I'm planning on doing a custom turbo set up, most likely I am going with dual 60-1s. I'm shooting for 600whp.
My question is this: Is this compression too much for turbo? Even in low boost?
My options are to just yank this motor and sell it as it is and build a new motor starting with a 6.0 block....or.....trying to lower the compression on this motor and boosting it.
Also, what can I do to lower the compression on the current motor without changing pistons out.
anybody have any suggestions? I appreciate any help in advance.
07-16-2007, 06:52 PM
#2
On The Tree
iTrader: (15)
Join Date: Feb 2005
Location: Gainesville, FL
Posts: 131
Likes: 0
Received 0 Likes
on
0 Posts
On pump gas, that is a bit too high compression. Get some heads with a 72cc chamber (317,035 LQ9/LQ4 or swap to the L92s w/L76mani) have them ported out a bit and use a thicker head gasket.
07-16-2007, 07:46 PM
#4
TECH Junkie
iTrader: (71)
Join Date: Mar 2002
Location: East Brady, Pa
Posts: 3,703
Likes: 0
Received 0 Likes
on
0 Posts
What cc pistons and heads are on the motor currently. You should be able to change one or both and have a nice boost motor....maybe the cam as well while it's apart.
