'72 RA21 Coupe, 1uzfe and Single Turbo

PARTS FOR SALE: Limited availability on 1UZFE EGR Delete Kits, Torque Converters and Supercharger Fish Brackets. No turbo kits. Email for info: [email protected]

FoPar

New Member
Messages
413
Location
Sydney, Australia
it may start choking up around the 600rwhp mark. we had problems with .63 housings over 650rwhp/21psi on 98-octane. E85 will be even worse. with bigger housings we picked up around 50-70rwhp all the way thru. converter made a big difference also, went from 500ft-lbs to 680ft-lbs when going to a Neal Chance converter.

BLK40TTorque.jpg
 
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stevieg

New Member
Messages
228
Location
lethbridge alberta
it may start choking up around the 600rwhp mark. we had problems with .63 housings over 650rwhp/21psi on 98-octane. E85 will be even worse. with bigger housings we picked up around 50-70rwhp all the way thru. converter made a big difference also, went from 500ft-lbs to 680ft-lbs when going to a Neal Chance converter.

Your .63 housings were choking at 650whp on a twin turbo setup? I'm only running a single pte billet 6262, if I'm understanding what you're saying I'm even more confused. As I'd figured my single .58 would already be too small to handle the 4.0l of displacement.

I'm only planning on running 500-525whp as I don't want to push my luck on a completely on-opened motor (haven't even pulled the valvecovers) by looking at my current gains I'm hoping to hit my hp goal at only 12-13psi. Shouldn't be too hard as I'm already in the process of swapping to an r154 and only running 8psi right now (9psi wastegate spring, 8psi at intake or 1psi of pressure drop through intercooler)
 

FoPar

New Member
Messages
413
Location
Sydney, Australia
Your .63 housings were choking at 650whp on a twin turbo setup? I'm only running a single pte billet 6262, if I'm understanding what you're saying I'm even more confused. As I'd figured my single .58 would already be too small to handle the 4.0l of displacement.

I'm only planning on running 500-525whp as I don't want to push my luck on a completely on-opened motor (haven't even pulled the valvecovers) by looking at my current gains I'm hoping to hit my hp goal at only 12-13psi. Shouldn't be too hard as I'm already in the process of swapping to an r154 and only running 8psi right now (9psi wastegate spring, 8psi at intake or 1psi of pressure drop through intercooler)

i thought u had twins. they weren't choking bad till about 800rwhp (about 400hp each) the turbo's however were only rated to 550hp.
 
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stevieg

New Member
Messages
228
Location
lethbridge alberta
i thought u had twins. they weren't choking bad till about 800rwhp (about 400hp each) the turbo's however were only rated to 550hp.

Ok, ya this 6262 is rated to 670hp but I've seen dumps
Of them doing 740awhp on an Evo motor lol but yeah I think between a new intake manifold, manual trans and 4-5psi I should be able to hit my hp target
 

stevieg

New Member
Messages
228
Location
lethbridge alberta
Yay 4 days shipping (from auckland new zealand to southern alberta) and this arrived today!
3b25634c.jpg

Billet flywheel and custom carbon kevlar clutch, pressure plate says 3230lb clamping force and is supposed to be good for 700hp

old automatic is out, swapped the ring gear onto the new flywheel and should have everything back in the car tommorow. Would be driving it tommorow with the 5spd but my luck ran out and the driveshaft is going to be 3" too short, fuck! oh well guess i'll be having a new one built again lol
oh yeah shot this last week
http://www.youtube.com/watch?v=2v8HI3bL6WE&feature=player_embedded
 

bigdaddeywalt

New Member
Messages
99
Location
beltsville MD
Went Drag racing again today
best run of the day [email protected] with a 1.93 60foot.
hankook street tires, no cage lol
theres a 10.60 in it pretty easy with some sticky tires


Great Job! Love the stance of the car and your setup. Did you gain any hp with the new intake manifold? Or did you run those numbers with the first dyno numbers? Have you weighed your car yet?

Keep up the great work bro.:)
 

stevieg

New Member
Messages
228
Location
lethbridge alberta
Great Job! Love the stance of the car and your setup. Did you gain any hp with the new intake manifold? Or did you run those numbers with the first dyno numbers? Have you weighed your car yet?

Keep up the great work bro.:)

Intake Mani hasn't been done yyet, that was a dead stock motor but running 12psi. Original dyno was done at 8psi. Doing the math for 8psi vs 12psi, 1/4 mile MPH and weight it should be making in the neighborhood of [email protected] uncorrected or 485-490corrected to sealevel

numbers with intake manifold and 15psi should hopefully be 550whp uncorrected which should net me a 9.95sec which is my goal for this car

steve
 
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