Not sure what HTA stands for, but it's a term coined by Forced Performance for their modded Garrett turbos (such as the GT35R). Looks pretty good on the dyno graphs at least.

http://store.forcedperformance.net/m...de=NTGT3582HTA

 

So nice seeing a Porsche put the smack down on a Supra. Its a rare event down here.

 

I have a connection at Forced Performance... I have been contemplating about the HTA gt35rs for 6 months... as of now only VR has a set on his car( but not finished yet) and from what I hear the Eddie Bellow/RPM crew has a set... probably on the red car( just my guess).
FP HTA turbo is a GT35T.. except they use a smaller compressor wheel(59mm vs 62 mm)
they also have a custom compressor housing....
Meanwhile it does well at high boost applications( 40 psi) we still do not know what it does at 20 psi... Todd said I will loose 50 HP on top but gain 50 in the midrange...
SO I am contemplating and waiting on some feedback before I try them out...
BTW, they are finishing the gt37r HTA... I might go with them

markski

 

Markski...is there a solution to the fuel injectors? I thought fuel was one of the issues preventing from 1000whp+. How about the MAF? Will be able to support 1000whp+?

 

[QUOTE=geetee;1761257]Markski...is there a solution to the fuel injectors? I thought fuel was one of the issues preventing from 1000whp+. How about the MAF? Will be able to support 1000whp+?[/QUOTE


]I was fortunate to spend three times the money on my initial fuel system. So I don't have flow problems. I even have bigger injectors.
These htas may not produce more power on top but rather move up the numbers thruout the range. And spool up faster.
the maf is good for 1000 hp
The 37rs should be nice and possibly a prime candidate for my big heads.
Time will tell
markski

 

Go Marek ^^^^^^^^^^^ !!!!!

 

EXACTLY what Todd told me at the supra nats! He said to hold off for now until there is more data supporting its use a lower boost levels. At this moment, he doesnt know if the benifits will be there at 20 psi vs 40 psi which the Mitsubishi Evos are currently boosting. However; if there is data to support power claims and spool up time as seen in the Evos, I would like to switch out to a 37. This will be a next year project..... starting on my fuel system at this very moment!!!!

Robert

 

37's as in journal bearing? Is there any benefits over the ball bearings?

 

[QUOTE=MARKSKI;1761292]mark are u saying that the gt35rs w .82 and hta are only worth it if doing 40 psi?

 

HTA 37Rs... not 37s...
Im about to sell my gt35rs.. or just upgrade it to HTAs... if everything goes well Ill have them on with 2 months....
My evo tuners telling me they do well even at low boost... my guess is that they will spool up like a GT3076R but have the power of a gt35r with a .63 AR at least. The HTA guy is telling me they are pulling all the way on top....
they cant be worse thats for sure...
markski

 

Only if it is time for a rebuild!

 

Interesting, so it looks like the HTA GT35R (in addition to the modded inlet) is using a standard 35R turbine wheel and center cartridge but with a compressor wheel from the GT3782:

http://www.turbobygarrett.com/turbobygarrett/catelog/Turbochargers/GT37/GT3782_452159_3.htm

The GT3782 comp wheel has a 59mm inducer and 82mm exducer (52 trim) as you described. The smaller inducer would explain the better spool compared with the standard GT35R compressor which has a 61mm inducer and 82mm exducer (56 trim)

http://www.turbobygarrett.com/turbobygarrett/images/catalog/Turbochargers/gt37_images/GT3782_452159_3_comp_e.gif

http://www.turbobygarrett.com/turbobygarrett/images/catalog/Turbochargers/gt35_images/GT3582R_714568_2_comp_e.gif


At 20 psi (P/R of 2.36 at sea level) it looks like the 52 trim wheel will only flow a max of ~55lb/min, vs the 56 trim wheel (for the standard 35R) which flows a max of 60lb/min. So like Todd said, it looks like you will lose a bit on the top end at the expense of better midrange.

What AMS has called the GT37R is essentially just an old T67 with a ball bearing cartridge and a P-trim turbine wheel. AKA PT-67R from Precision Turbo. I think most people make about 50-75 hp more with this over a standard GT35R (per turbo), but I wouldn’t expect it to spool up nearly as well due to it's size and older wheel designs. Will be interesting to see what FP uses in their “HTA” version.

 

So will they stuff a gt40r compressor wheel in a 37R?
Ill look into it...

 

No, it is a completely different compressor wheel, cnc'd from billet, with a Tial anti surge compressor housing, cheers.

 

Agreed, I just got off the phone with them....