3S-GTE/Turbo MK1 Engine Turbo

jasenklems · 02-17-2010, 12:21 AM

How much power can the 4age and the 4agze put down and still be reliable and still for the most part be a daily driver if I turbo it and how much power and torque can the manual take.....????????? Thanks so much for the info..

mr2tim · 02-22-2010, 10:37 AM

Hey Big Dude,

As you may have read here in this Forum the engineers at Toyota beefed up the 4A-GZE with forged components when they added the Supercharger to the 4A series engine.

Unfortunately they did NOT increase the crankshaft Mains sizing like the American race engine makers often do. Therefore, to me, this appears to be the limiting factor in this engine.

Toyota supplied SCCA with the 4A series engines in the "Toyota Atlantic" spec series engines in the 80's and they topped out at 225-250hp. These engines were noted as being quite reliable by the way.

Considering that they were assembled under the OEM clearances, which makes these engines so reliable, this appears to me to be the maximum you could expect out of an engine that would be reliable enough to be put on the street.

You might do some research into the "Atlantic" engines and use these baselines as a starting point for some engine designing/building

I'm very sure there are "Hot Dog" turbo heads that can tweek bigger HP but, as always, the higher the HP the less reliability you can expect.

Hope this bit of Toyota history will help you along.

As for the manual trans? When the Toyota engineers built the close ratio E-51 for the Supercharger engine system they installed a "in the case" oil pump which seems to lead me to believe they saw some problems with the reliability of the C-51/52 design don't you think?

Tim>>>>>>mr2tim

Papo J · 03-15-2010, 12:15 PM

Quote:

Originally Posted by jasenklems

How much power can the 4age and the 4agze put down and still be reliable and still for the most part be a daily driver if I turbo it and how much power and torque can the manual take.....????????? Thanks so much for the info..

I've seen the 4AGE/GZE make anywhere from 150whp to over 400whp on OEM internals. It all depends on who builds it, how it's built and how well it is tuned. I also know of at least 4 people that have 200+ whp MK1s running the NA tranny with no issues, one is a 300+whp car.

jasenklems · 03-15-2010, 10:31 PM

thanks for the info

mhamrick · 04-28-2010, 11:29 PM

Should be noted the C series tranny Papo is talking about that holds 300+ whp is modified to hold those numbers. Not just a straight stock tranny.

02-17-2010, 12:21 AM	#1 (permalink)
jasenklems Cage Fighter Join Date: Jun 2009 Location: Mt. Healthy Ohio Posts: 139 Thanks: 7 Thanked 1 Time in 1 Post iTrader Rating: (0/0% )	Turbo How much power can the 4age and the 4agze put down and still be reliable and still for the most part be a daily driver if I turbo it and how much power and torque can the manual take.....????????? Thanks so much for the info..

02-22-2010, 10:37 AM	#2 (permalink)
mr2tim SUPERcharZed ToyZ RacZer Join Date: Mar 2008 Location: South Florida Posts: 1,789 Thanks: 8 Thanked 118 Times in 111 Posts My Google Map iTrader Rating: (6/100% )	Look to the past for ideas? Hey Big Dude, As you may have read here in this Forum the engineers at Toyota beefed up the 4A-GZE with forged components when they added the Supercharger to the 4A series engine. Unfortunately they did NOT increase the crankshaft Mains sizing like the American race engine makers often do. Therefore, to me, this appears to be the limiting factor in this engine. Toyota supplied SCCA with the 4A series engines in the "Toyota Atlantic" spec series engines in the 80's and they topped out at 225-250hp. These engines were noted as being quite reliable by the way. Considering that they were assembled under the OEM clearances, which makes these engines so reliable, this appears to me to be the maximum you could expect out of an engine that would be reliable enough to be put on the street. You might do some research into the "Atlantic" engines and use these baselines as a starting point for some engine designing/building I'm very sure there are "Hot Dog" turbo heads that can tweek bigger HP but, as always, the higher the HP the less reliability you can expect. Hope this bit of Toyota history will help you along. As for the manual trans? When the Toyota engineers built the close ratio E-51 for the Supercharger engine system they installed a "in the case" oil pump which seems to lead me to believe they saw some problems with the reliability of the C-51/52 design don't you think? Tim>>>>>>mr2tim

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03-15-2010, 10:31 PM	#4 (permalink)
jasenklems Cage Fighter Join Date: Jun 2009 Location: Mt. Healthy Ohio Posts: 139 Thanks: 7 Thanked 1 Time in 1 Post iTrader Rating: (0/0% )	thanks for the info

04-28-2010, 11:29 PM	#5 (permalink)
mhamrick Some Skills Join Date: May 2009 Posts: 61 Thanks: 1 Thanked 3 Times in 3 Posts iTrader Rating: (1/100% )	Should be noted the C series tranny Papo is talking about that holds 300+ whp is modified to hold those numbers. Not just a straight stock tranny.