Max power on GT4294R?
Oct 30, 2007, 01:08 PM
#16
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The car is a new all purpose drag car that I will run on the 10th November and the setup is follows
1) Magnus custom ROSS 8.5:1 pistons
2) Custom 93 mm stroke crankshaft
3) Oliver rods
4) Stage 5 race ported custom Dan Paramore cylinder head with oversized valves and Supertech valve springs
5) Jun 272 camshafts
6) HKS Kansai intake manifold
7) Nissan Infiniti Q45 90 mm throttle body
8) Garrett bar and plate GT spec 26 x 14 x 5 inch intercooler core
9) Running an MSD 2 step ignition system
10) Autronic SM4 full programmable ecu
Running 50 psi of boost is no issues and the fuel we are running now is VP C16.
Turbo has a 0.98 rear end only thus we doubt if 900 is even possible.
What do you think?
1) Magnus custom ROSS 8.5:1 pistons
2) Custom 93 mm stroke crankshaft
3) Oliver rods
4) Stage 5 race ported custom Dan Paramore cylinder head with oversized valves and Supertech valve springs
5) Jun 272 camshafts
6) HKS Kansai intake manifold
7) Nissan Infiniti Q45 90 mm throttle body
8) Garrett bar and plate GT spec 26 x 14 x 5 inch intercooler core
9) Running an MSD 2 step ignition system
10) Autronic SM4 full programmable ecu
Running 50 psi of boost is no issues and the fuel we are running now is VP C16.
Turbo has a 0.98 rear end only thus we doubt if 900 is even possible.
What do you think?
If the car is a purpose built drag car then you should be running the 74mm GT4202.
Oct 30, 2007, 05:30 PM
#18
The car is a new all purpose drag car that I will run on the 10th November and the setup is follows
1) Magnus custom ROSS 8.5:1 pistons
2) Custom 93 mm stroke crankshaft
3) Oliver rods
4) Stage 5 race ported custom Dan Paramore cylinder head with oversized valves and Supertech valve springs
5) Jun 272 camshafts
6) HKS Kansai intake manifold
7) Nissan Infiniti Q45 90 mm throttle body
8) Garrett bar and plate GT spec 26 x 14 x 5 inch intercooler core
9) Running an MSD 2 step ignition system
10) Autronic SM4 full programmable ecu
Running 50 psi of boost is no issues and the fuel we are running now is VP C16.
Turbo has a 0.98 rear end only thus we doubt if 900 is even possible.
What do you think?
1) Magnus custom ROSS 8.5:1 pistons
2) Custom 93 mm stroke crankshaft
3) Oliver rods
4) Stage 5 race ported custom Dan Paramore cylinder head with oversized valves and Supertech valve springs
5) Jun 272 camshafts
6) HKS Kansai intake manifold
7) Nissan Infiniti Q45 90 mm throttle body
8) Garrett bar and plate GT spec 26 x 14 x 5 inch intercooler core
9) Running an MSD 2 step ignition system
10) Autronic SM4 full programmable ecu
Running 50 psi of boost is no issues and the fuel we are running now is VP C16.
Turbo has a 0.98 rear end only thus we doubt if 900 is even possible.
What do you think?
Does that turbine housing have a divided T4 inlet, or is it open?
Oct 30, 2007, 06:00 PM
#19
.98 A/R and 1.02 A/R???
HUH?
The GT42 stuff doesn't come in either one of those sizes?
A local Honda has made 930 WHP on the GT4294R (dynojet), another broke 900, and several others are in the high 800s. They are all using the 1.15 or larger A/R hot sides.
As for VP import being a requirement, I don't know about that. The 930 HP car was on some 114 octane fuel and around 45 PSI of boost. I know it's a honda, but the question was about maximum HP out of the turbo. If you can compare the efficiency of the B-series to the efficiency of the 4G63 is questionable, but 930 is the most I've seen out of the GT4294R. I'm sure the Ecotech guys are making even more then that though, especially considering they are on alcohol.
HUH?
The GT42 stuff doesn't come in either one of those sizes?
A local Honda has made 930 WHP on the GT4294R (dynojet), another broke 900, and several others are in the high 800s. They are all using the 1.15 or larger A/R hot sides.
As for VP import being a requirement, I don't know about that. The 930 HP car was on some 114 octane fuel and around 45 PSI of boost. I know it's a honda, but the question was about maximum HP out of the turbo. If you can compare the efficiency of the B-series to the efficiency of the 4G63 is questionable, but 930 is the most I've seen out of the GT4294R. I'm sure the Ecotech guys are making even more then that though, especially considering they are on alcohol.
Oct 30, 2007, 07:57 PM
#21
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jmartinez where are u getting ur information from man ? who on a 42r runs 50 psi on race gas ? most of the evos u see with 900+whp are all in the 40-45 range. At that level of psi, 5 psi is a monumental difference. Take for example the infamous AMS black evo that made 903 he was at or around 44psi during that number whp. The race between him and the twin turbo cobra he was at 38psi and made 850awhp. I mean John shepard runs 56psi out of a 42r, yet he runs on STRAIGHT METHANOL and 10x 1000cc injectors. Hes the only person with a couple select few that even deserve to run 50+psi out of the 42r mainly because race gas simply doesn't do it for those guys anymore. Anyways, you don't need to run 5495894psi out of the 42r to make 900+whp. Get a good tuner and some race gas and turn that pig up to around 45psi and you'll see you don't need 50psi+ to make over 900awhp. AMS's race evo when they were at 988awhp, they were street tuning at 44psi man. Now AMS is pumping out like 1018awhp or some crazy number. Im sure there psi went up to or around 50psi to make over 1000awhp. Its all over the internet and you can actually watch there videos and there 44psi street tune if your familiar with Streetfire / Youtube. Also, on the first page you stated that c16 was 118 octane lol ? c16 is called c16 for a reason its 116 octane. You dont see c12 being 119 octane do you lol ? Also why on earth would some1 run a 45r on there EVO, when there are like 2-3 evos in the 8's !!! with 42r's ? Theres such a thing as to big of a turbo and that is TO big of a turbo. Hes probably getting full boost at like 6800 and having 1500rpms of powerband, useless IMO. But hey goodluck with the numbers man.
Last edited by EVOslow; Oct 30, 2007 at 08:03 PM. Reason: forgot a part
Oct 30, 2007, 10:07 PM
#23
Evolving Member
Thread Starter
hi guys,
Appreciate the input... We have a 4202 with a 1.22 housing sitting right here on the shelf but not running it yet as we are short of time for the race.
As mentioned we made 789 WHP AWD Dynojet power on 42 psi not maximixed yet on the ignition timing on C16 fuel, given that the wheel flows 85 ib/min I would expect 850 but if we touch higher than that it would be plus.
The T4 housing is a divided housing but non standard 42 type, if not mistaken this turbo is a GT45/42 hybrid on the housings but not on the cartridge. Cartridge is still a 4294R with the 94mm wheel thus the funny .98 turbine housing
THe car is new to this big frame setup, but of course we're running also a Magnus dog box thus cross our fingers we will do a good run at the meet.
Appreciate the input... We have a 4202 with a 1.22 housing sitting right here on the shelf but not running it yet as we are short of time for the race.
As mentioned we made 789 WHP AWD Dynojet power on 42 psi not maximixed yet on the ignition timing on C16 fuel, given that the wheel flows 85 ib/min I would expect 850 but if we touch higher than that it would be plus.
The T4 housing is a divided housing but non standard 42 type, if not mistaken this turbo is a GT45/42 hybrid on the housings but not on the cartridge. Cartridge is still a 4294R with the 94mm wheel thus the funny .98 turbine housing
THe car is new to this big frame setup, but of course we're running also a Magnus dog box thus cross our fingers we will do a good run at the meet.
Oct 31, 2007, 05:46 AM
#24
Now that tells me something.
Divided housings have certainly proved their value for these large turbos, but they have to be sized considerably larger when it comes to A/R figures. The .98 A/R divided housing you are using presently is almost certainly too small for what you are doing. For this turbo (4294R) and the boost levels you are using, you really should be using a 1.15 A/R housing.
If you go to the 4202R, the 1.22 A/R divided housing will be fine.
Also, if you're head is competently ported, it's possible that you may see a bit more power from a cam set with higher lift. And even if you stay with the JUNs, if you have a set of adjustable gears, I may be able to get you another 15-20hp out of them.
Divided housings have certainly proved their value for these large turbos, but they have to be sized considerably larger when it comes to A/R figures. The .98 A/R divided housing you are using presently is almost certainly too small for what you are doing. For this turbo (4294R) and the boost levels you are using, you really should be using a 1.15 A/R housing.
If you go to the 4202R, the 1.22 A/R divided housing will be fine.
Also, if you're head is competently ported, it's possible that you may see a bit more power from a cam set with higher lift. And even if you stay with the JUNs, if you have a set of adjustable gears, I may be able to get you another 15-20hp out of them.
Oct 31, 2007, 08:26 AM
#26
They aren't small with respect to effective duration, that much is for certain. It's just that when it comes to lift, they appear to be designed for a stock head. This is fine, except that if one has invested in a ported head, he may see a little more power in using a cam set with greater lift.
Of course, this is assuming everything else is such that something other than the head won't be a limiting factor, and that is a rather large assumption.
Of course, this is assuming everything else is such that something other than the head won't be a limiting factor, and that is a rather large assumption.
Oct 31, 2007, 10:30 AM
#27
Evolving Member
Thread Starter
Hi Ted,
You may be right, thing is its the first time we're on a big frame turbo like this and having a capacity this small 2.1 litre, spool up or in other words lag is also a concern as we still do not know how you big guys in the US shift without lagging in each gear.
We may be running a dog gear but getting full boost rpm at 6300 is still laggy and it really looks like we have to shift at 10k rpm. Right?
Will need your advise when we tune next week on how to maximize power on this turbo. Do you think 850 is possible?
You may be right, thing is its the first time we're on a big frame turbo like this and having a capacity this small 2.1 litre, spool up or in other words lag is also a concern as we still do not know how you big guys in the US shift without lagging in each gear.
We may be running a dog gear but getting full boost rpm at 6300 is still laggy and it really looks like we have to shift at 10k rpm. Right?
Will need your advise when we tune next week on how to maximize power on this turbo. Do you think 850 is possible?
Now that tells me something.
Divided housings have certainly proved their value for these large turbos, but they have to be sized considerably larger when it comes to A/R figures. The .98 A/R divided housing you are using presently is almost certainly too small for what you are doing. For this turbo (4294R) and the boost levels you are using, you really should be using a 1.15 A/R housing.
If you go to the 4202R, the 1.22 A/R divided housing will be fine.
Also, if you're head is competently ported, it's possible that you may see a bit more power from a cam set with higher lift. And even if you stay with the JUNs, if you have a set of adjustable gears, I may be able to get you another 15-20hp out of them.
Divided housings have certainly proved their value for these large turbos, but they have to be sized considerably larger when it comes to A/R figures. The .98 A/R divided housing you are using presently is almost certainly too small for what you are doing. For this turbo (4294R) and the boost levels you are using, you really should be using a 1.15 A/R housing.
If you go to the 4202R, the 1.22 A/R divided housing will be fine.
Also, if you're head is competently ported, it's possible that you may see a bit more power from a cam set with higher lift. And even if you stay with the JUNs, if you have a set of adjustable gears, I may be able to get you another 15-20hp out of them.
Oct 31, 2007, 01:45 PM
#29
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jmartinez where are u getting ur information from man ? who on a 42r runs 50 psi on race gas ? most of the evos u see with 900+whp are all in the 40-45 range. At that level of psi, 5 psi is a monumental difference. Take for example the infamous AMS black evo that made 903 he was at or around 44psi during that number whp. The race between him and the twin turbo cobra he was at 38psi and made 850awhp. I mean John shepard runs 56psi out of a 42r, yet he runs on STRAIGHT METHANOL and 10x 1000cc injectors. Hes the only person with a couple select few that even deserve to run 50+psi out of the 42r mainly because race gas simply doesn't do it for those guys anymore. Anyways, you don't need to run 5495894psi out of the 42r to make 900+whp. Get a good tuner and some race gas and turn that pig up to around 45psi and you'll see you don't need 50psi+ to make over 900awhp. AMS's race evo when they were at 988awhp, they were street tuning at 44psi man. Now AMS is pumping out like 1018awhp or some crazy number. Im sure there psi went up to or around 50psi to make over 1000awhp. Its all over the internet and you can actually watch there videos and there 44psi street tune if your familiar with Streetfire / Youtube. Also, on the first page you stated that c16 was 118 octane lol ? c16 is called c16 for a reason its 116 octane. You dont see c12 being 119 octane do you lol ? Also why on earth would some1 run a 45r on there EVO, when there are like 2-3 evos in the 8's !!! with 42r's ? Theres such a thing as to big of a turbo and that is TO big of a turbo. Hes probably getting full boost at like 6800 and having 1500rpms of powerband, useless IMO. But hey goodluck with the numbers man.
Im not even going to read what you posted. But the ETS evo runs 51-53 psi on his 2.0L. My friend did as well. Ill be doing the same. And many other shops you know who they are have ran over 50psi.
Oct 31, 2007, 02:02 PM
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jmartinez where are u getting ur information from man ? who on a 42r runs 50 psi on race gas ? most of the evos u see with 900+whp are all in the 40-45 range. At that level of psi, 5 psi is a monumental difference. Take for example the infamous AMS black evo that made 903 he was at or around 44psi during that number whp. The race between him and the twin turbo cobra he was at 38psi and made 850awhp. I mean John shepard runs 56psi out of a 42r, yet he runs on STRAIGHT METHANOL and 10x 1000cc injectors. Hes the only person with a couple select few that even deserve to run 50+psi out of the 42r mainly because race gas simply doesn't do it for those guys anymore. Anyways, you don't need to run 5495894psi out of the 42r to make 900+whp. Get a good tuner and some race gas and turn that pig up to around 45psi and you'll see you don't need 50psi+ to make over 900awhp. AMS's race evo when they were at 988awhp, they were street tuning at 44psi man. Now AMS is pumping out like 1018awhp or some crazy number. Im sure there psi went up to or around 50psi to make over 1000awhp. Its all over the internet and you can actually watch there videos and there 44psi street tune if your familiar with Streetfire / Youtube. Also, on the first page you stated that c16 was 118 octane lol ? c16 is called c16 for a reason its 116 octane. You dont see c12 being 119 octane do you lol ? Also why on earth would some1 run a 45r on there EVO, when there are like 2-3 evos in the 8's !!! with 42r's ? Theres such a thing as to big of a turbo and that is TO big of a turbo. Hes probably getting full boost at like 6800 and having 1500rpms of powerband, useless IMO. But hey goodluck with the numbers man.
Take a look at the pic what psi are they running
.