Looking for a good street turbo for 600hp
02-04-2015, 11:29 PM
#26
Honda-Tech Member
Re: Looking for a good street turbo for 600hp
I don't know the spec comparing the HTA 30r to the garret gt3076r, but I've made around 615hp @22lbs on the garret gt3076r. I remember one pull when we accidently forgot to set the load after a computer reset and Dyno 645hp @22 on 0 load. But I know those won't be correct #. I was looking to Max out the turbo in the upper 20's psi but has to stop because I was out of injectors. It was shocking to see these kind of # out of a 30r. Runs was on e85
02-05-2015, 03:50 AM
#27
Re: Looking for a good street turbo for 600hp
I'm sure you were shocked, as they are not correct numbers. But I'm afraid those were not SAE corrected numbers at all. In the end I suppose it won't matter as "real life" physics tells the real story and a dyno just calculates hp based upon what is entered. But no, those cannot do 600hp. HTA or otherwise. This was why Garrett alone created the GTX3576R. Because that exhaust wheel was a mismatch to the GTX3076R.
02-06-2015, 10:06 AM
#28
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Re: Looking for a good street turbo for 600hp
Yea there's no way the turbine wheel can flow that much air. If you can't get more out of the exhaust then you can't put more in the motor.
And in the small displacement Honda world the words street and 600hp don't really work unless your definition of a street car doesn't make power below 6,000rpm
Like TheShodan said the gt30 turbine wheel was a mismatch with the 76mm compressor wheel and the turbine wheel wasn't allowing the full potential of the compressor wheel. Just like the 3071 was made because the 2871 didn't have a large enough turbine wheel to support the flow capabilities of the compressor wheel. Ultimately the turbine wheel limits the gt28 series turbos to the 400-425 level just as the gt30 turbine wheel is limited to the sub 600hp mark
And in the small displacement Honda world the words street and 600hp don't really work unless your definition of a street car doesn't make power below 6,000rpm
Like TheShodan said the gt30 turbine wheel was a mismatch with the 76mm compressor wheel and the turbine wheel wasn't allowing the full potential of the compressor wheel. Just like the 3071 was made because the 2871 didn't have a large enough turbine wheel to support the flow capabilities of the compressor wheel. Ultimately the turbine wheel limits the gt28 series turbos to the 400-425 level just as the gt30 turbine wheel is limited to the sub 600hp mark
02-06-2015, 01:35 PM
#29
Honda-Tech Member
Re: Looking for a good street turbo for 600hp
I'm sure you were shocked, as they are not correct numbers. But I'm afraid those were not SAE corrected numbers at all. In the end I suppose it won't matter as "real life" physics tells the real story and a dyno just calculates hp based upon what is entered. But no, those cannot do 600hp. HTA or otherwise. This was why Garrett alone created the GTX3576R. Because that exhaust wheel was a mismatch to the GTX3076R.
02-21-2015, 12:33 PM
#30
Honda-Tech Member
02-26-2015, 07:45 AM
#33
Re: Looking for a good street turbo for 600hp
Again. as discussed, 60mm N32 Turbine wheel is limiting factor for 600hp. You must step up to the 68mm N111 of the GT35R turbine wheel to get that power level. This is why the GTX3576R was released to help against the poorly mismatched GTX3076R. Great compressor wheel (Same one between the two) , but better top end characteristics with the larger 68mm turbine wheel shared with the GT35R.
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