What is the Record for HP from a stock GE na-t motor?
01-21-15, 11:10 AM
#1
What is the Record for HP from a stock GE na-t motor?
What is the Record for HP from a stock GE motor?
im currentally at 686whp on e85 and I seen most builds end around 700-750hp with cams.
I realize the pistons are the weak point but how tough are they?
im currentally at 686whp on e85 and I seen most builds end around 700-750hp with cams.
I realize the pistons are the weak point but how tough are they?
01-21-15, 12:37 PM
#2
2JZ-GE and 2JZ-GTE have similar pistons (from a material perspective), but the GTE pistons have deeper recessions in the piston head to assist in lowering overall compression. Aside from that they're exactly the same so the max HP should be the same. I have GTE pistons in my NA-T build now.
GE heads flow a little better based on what i've read but there are tons of threads out there that debate this endlessly
GE heads flow a little better based on what i've read but there are tons of threads out there that debate this endlessly
?
01-22-15, 01:07 AM
#5
Those are some impressive numbers, suprakidxx. To my knowledge, DaveH (on Supraforums I believe) posted some of the highest numbers on an NA-T car a few years ago.
I'm a novice with 700whp+ builds but I'll throw it out there in case it might help: Bigger injectors (or fuel pump) aside isn't a 2.0mm head gasket a safer bet with GE pistons even with E85 tuning if he's pushing higher? OEM TT gaskets are 1.3mm if I recall.
I'm a novice with 700whp+ builds but I'll throw it out there in case it might help: Bigger injectors (or fuel pump) aside isn't a 2.0mm head gasket a safer bet with GE pistons even with E85 tuning if he's pushing higher? OEM TT gaskets are 1.3mm if I recall.
01-22-15, 01:28 PM
#7
E85 changes everything. you want the highest compression possible because the fuel will not auto-ignite in the cylinders (reason you have to lower compression on pump gas via thicker headgasket). think of like a diesel running 30-50 psi with no issues, its directly related to the fuel.
some people actually go higher than the stock 10:1 on newer e85 builds.
It just takes more fuel and more psi to make more power but the problem with our motors is the stock short block is only good for a certain amount of torque, and when you hit 750-800 hp on E85 the torque is so high that the bottom end will be starting to have issues, the rods, the fastening hardware.. etc... this is why alot of builds stop there, things start to bend and break at those torque levels.
pump gas the same hp will not yeild the same torque due to the extra power you can squeeze out of E85, so its best to think torque and not hp when talking about the bottom end.
Installing a thicker headgasket on an e85 build will just mean you have to run more boost to make the same power, which means more heat and more chance to break parts. the only reason to install a tt gasket or anything thicker than the GE gasket is if you had to run pump gas and still have decent boost levels.
People looking to make it to 1000+hp, rebuild the bottom end with stronger parts and then they can push it further than on a stock bottom end.
Most people will find though that a 10:1 compression E85 750hp na-t is more than enough to try and handle on the streets, so alot of builds stop there, but there are people who like hitting those high numbers and I have seen a few 1000+hp e85 supras around here that are basically fully built from start to finish to hold that reliably.
Dave-H was one of the first na-t's to put down a pass in the 9's with an extremely old 2jzge block (200k+ miles). I am not sure if there was a HP number on it, but it was pump gas I believe.
some people actually go higher than the stock 10:1 on newer e85 builds.
It just takes more fuel and more psi to make more power but the problem with our motors is the stock short block is only good for a certain amount of torque, and when you hit 750-800 hp on E85 the torque is so high that the bottom end will be starting to have issues, the rods, the fastening hardware.. etc... this is why alot of builds stop there, things start to bend and break at those torque levels.
pump gas the same hp will not yeild the same torque due to the extra power you can squeeze out of E85, so its best to think torque and not hp when talking about the bottom end.
Installing a thicker headgasket on an e85 build will just mean you have to run more boost to make the same power, which means more heat and more chance to break parts. the only reason to install a tt gasket or anything thicker than the GE gasket is if you had to run pump gas and still have decent boost levels.
People looking to make it to 1000+hp, rebuild the bottom end with stronger parts and then they can push it further than on a stock bottom end.
Most people will find though that a 10:1 compression E85 750hp na-t is more than enough to try and handle on the streets, so alot of builds stop there, but there are people who like hitting those high numbers and I have seen a few 1000+hp e85 supras around here that are basically fully built from start to finish to hold that reliably.
Dave-H was one of the first na-t's to put down a pass in the 9's with an extremely old 2jzge block (200k+ miles). I am not sure if there was a HP number on it, but it was pump gas I believe.
Last edited by Ali SC3; 01-22-15 at 01:31 PM.
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01-25-15, 10:18 AM
#9
friend of mine had some cams made for his Na-t there a gsc s2 copy for GE and it pumped out 730whp on id1000 at 89%dc again e85 and a smaller turbo.62mm iirc
i think ill look to doing a qsv for my s366. i want less lag. currently a full twincroll setup.
i think ill look to doing a qsv for my s366. i want less lag. currently a full twincroll setup.
01-26-15, 09:24 AM
#10
its easier to hook up some nitrous to help get spooling for when you "need it".
the QSV will help your spool but its going to take a little off the top end also, not much but a little.
Also if you have a full divided setup as in divided manifold, you will need to change it for an open un-divided manifold to use the QSV.
I like cams but do realize that going to push your powerband to the right, meaning higher power at higher rpms's, and lower power at lower rpm's so that will not help your lag any.
the QSV will help your spool but its going to take a little off the top end also, not much but a little.
Also if you have a full divided setup as in divided manifold, you will need to change it for an open un-divided manifold to use the QSV.
I like cams but do realize that going to push your powerband to the right, meaning higher power at higher rpms's, and lower power at lower rpm's so that will not help your lag any.
01-27-15, 06:47 AM
#11
Yesir i do realized cams shift the powerband.
And seeing as ebay manifolds are $100 i will cut out the center and make one a undivided also this will retain my same location of downpipe and all other hoses because i need to use a 1'' spacer with the s366. the qsv is 3/4 thick so maybe i can get away with it. worst case i weld a 1/4 spacer to manifold.
also id rather stay way from the bottle. it works but i like my power to be there all the time.
And seeing as ebay manifolds are $100 i will cut out the center and make one a undivided also this will retain my same location of downpipe and all other hoses because i need to use a 1'' spacer with the s366. the qsv is 3/4 thick so maybe i can get away with it. worst case i weld a 1/4 spacer to manifold.
also id rather stay way from the bottle. it works but i like my power to be there all the time.
01-28-15, 12:54 PM
#12
if you use a 1/4 undivided spacer that would help some with going from divided to undivided, still I would dremel the inside part as much as possible to make it smoother. welding a 1/4 piece would probably warp so I would say just use gaskets and bolt it all on.
