1Gina2G
10+ Year Contributor
- 810
- 2
- May 6, 2011
-
Beaufort,
South_Carolina
hey everyone just wanting to get pointed in the right direction before I pull my 4g64 n/t engine out for a rebuild.
I was going to follow the few guides that are out there at first about turboing the 4g64 as is after installing the turbo ECU for a low-boost setup / tune. A recent leak down test shows air coming from the dipstick & oil fill cap indicating worn piston rings, along with noticeable amount of oil going down every week on the dipstick. So wanting to go through for the rebuild, but always thought if you actually had the 4g64 out to do a rebuild, knowing its going to be turboed, why not put turbo rods, pistons rings right?
Well thing is I have all the turbo parts ready (for a stock boost setup) and not wanting to spend so much right away. I understand that the bore of a 4g64 is already bigger than a 4g63t engine, so factory pistons from a 63 wont work. Aftermarket pistons are $500 and up, give or take what I could buy a used 4g63t block for. I also know that the 4g64 pistons and rings are weaker then a 63 from higher compression, rather then the low compression turbo piston heads. the rods are supposed to be basically the same, meaning both 63 & 64 rods should fit turbo forged pistons.
main questions; Can you fit a 4g64 with forged pistons & rings, with a rebuilt SOHC head on stock boost & control? or is a DOHC head needed?
I was going to follow the few guides that are out there at first about turboing the 4g64 as is after installing the turbo ECU for a low-boost setup / tune. A recent leak down test shows air coming from the dipstick & oil fill cap indicating worn piston rings, along with noticeable amount of oil going down every week on the dipstick. So wanting to go through for the rebuild, but always thought if you actually had the 4g64 out to do a rebuild, knowing its going to be turboed, why not put turbo rods, pistons rings right?
Well thing is I have all the turbo parts ready (for a stock boost setup) and not wanting to spend so much right away. I understand that the bore of a 4g64 is already bigger than a 4g63t engine, so factory pistons from a 63 wont work. Aftermarket pistons are $500 and up, give or take what I could buy a used 4g63t block for. I also know that the 4g64 pistons and rings are weaker then a 63 from higher compression, rather then the low compression turbo piston heads. the rods are supposed to be basically the same, meaning both 63 & 64 rods should fit turbo forged pistons.
main questions; Can you fit a 4g64 with forged pistons & rings, with a rebuilt SOHC head on stock boost & control? or is a DOHC head needed?