Ahyesican

Hey guys I'm trying my hardest to find out which of these 2 turbos is better for my car.

I'm trying to get an honest 450hp (500hp would be sweet) out of my car with the best drivability and response.

I'm not too much interested in the 1/4 mile thing but more towards track days and autocross, i like to drive.

I got my choices down to the HTA 3076 and the GTX 3076 but i cant seem to find a comparison that says the GTX is def worth the money over the HTA or that the HTA is as good as or better than the GTX...has any one seen any?

what would be the best turbo for response and fun but a good punch for my setup???

My car:
hks 272 cams
3" exhaust
AEM ecu
850cc injectors
9.5: 1 CR
85.5 pistons
0.20 shaved off the head
manifolds stock

ct9asilver

iTrader: (13)

#1 The two turbos are so close, it's not really worth losing sleep over.

#2 Both are basically the same price within 20 bucks give or take, of each other depending on who you buy from, sometimes the HTA is more sometimes the GTX is more.

#3 Garret rates the GTX at around 65 lb/min, while FP rates the HTA at around 59 lb/min.

#4 The GTX is a newer release than the FP.

#5 I haven't seen any results that makes me lean one way or another.

Just close your eyes and pick


You want the best turbo for response and fun, then you should really be looking into stock framed turbos IMO, especially for your power goal, something like a HTA Green or BBK-B.

icmanevo

iTrader: (1)

BBK-B or FP green.

JorgeYaHeard

iTrader: (11)

I've been doing a lot of research on these lately. Both are great turbos from the information I've seen. I would go with whatever you could get cheaper. It looks like you could probably get a GTX3076R with a TiAL housing for about the same price as the HTA GT3076R.

spdracerut

iTrader: (2)

A GTX3071. That will hit your power target with the best spoolup and response. That's assuming your HP goals are crank numbers and pump gas. If your goals are whp, then the GTX3071 would do it on race gas.

JohnBradley

iTrader: (30)

We did 450 on 92 octane with a stock 2.0L and S1s with the HTA3076 at 26psi. Has anyone even dyno'd the GTX3076 yet?

codgi

iTrader: (22)

In the power range you are looking for + wanting response try a BB stock framed turbo such as the BBK-B or the FP Green/Red. No reason to go much bigger than that. Then again there is our fuel at home.....

I haven't been around the local forums lately is this your same nick on Zhaust?

TigOLDBiTTies

iTrader: (31)

if you figure in the price of the new turbo, new manifold, oil and coolant lines, downpipe, external wastegate (two of them if going GTX). add it up and it is alot more expensive then a fp green that will give you another 800rpms faster spool, way more low end torque, and the new ball bearing ones will last even longer then the standard JB turbos that they offered before.

IMO its not worth going to a tubular t3 mani and turbo unless u want 650+ hp at the wheels.

Piro Fyre

iTrader: (23)

http://www.atpturbo.com/mm5/merchant...gory_Code=VEVO
For some reason, ATP rates this turbo at 600HP. IMO, you won't go wrong with either and you can still use your stock manifold if you want.

https://www.evolutionm.net/forums/ev...93-octane.html
But he has a twin scroll T4 setup so of course it'll spool a little faster than a normal T3 setup. In the end result, it's worth to try out this new turbo. I would love to see more results out of this turbo as I'm interested in getting one for my setup now.

MrLith

The CLAIMS for the GTX3076R are more impressive, but so far the results I've seen other people actually get are consistantly equal or better with the HTA imho. The HTA has a smaller wheel than a "normal" GT3076R, being a 52trim with 76mm exducer. The GTX3076R is actually a larger compressor, more accurately being a 58trim GTX3077R.

The best case results of a GTX3076R vs a GT3076R seem to be that they spool and respond similar, while some have found the GTX slightly laggier -though it does get more power. On the flip side, the HTA tends to spool a little better than the normal GT.

The HTA has definitely made the highest power figures out of any of the three that I've been able to find, try and find David Buschur's HTA turbo test - he appears to have become a huge fan of the HTA76 and I'm sure he's experienced a huge amount of turbo and engine combos on EVOs.

JohnBradley

iTrader: (30)

I knew of this test and dont doubt its fast, but I meant actual dyno not VDR.

spdracerut

iTrader: (2)

Why is everyone even thinking about the GTX3076 when the GTX3071 will meet his power goals with better spool and response?

TwStDeVo

iTrader: (62)

with a built motor, ported head, and s2 or s3 cams, do you think it would be above 500whp? im deciding between the hta3076r .63 a/r or hta3582 .63 a/r on pump gas (91oct).

Ahyesican

I'll Help a little here....I'm from Barbados and for the cars we have here the gas we get (pump) is awful....i mean no one even knows the octane level of it, best probably being shell Vpower, but we do get import VP import.

David Buschur said he never tested the gtx turbo, was hoping for his input.

I haven't even thought of the gtx 3071, is it a faster spooler than the fp green? is the fp green rated for 500hp? what do u figure the RPM difference is between the GTX 3071 and the 3076, like when do they start to spool from?

sparky

iTrader: (1)

We need to know if you are aiming for 450-500 horsepower at the crank, or at the wheels. Also, you have to factor the crappy 89-90(R+M/2) octane of your available pump gas into the equation more heavily. The GTX 3071 is never going to get you to 450WHP on 89 octane pump gas, sorry.. not even with a really loose, single-scroll, exhaust housing.

Which brings us to the other issue: I don't think that you are going to get to 450WHP, much less reach 500WHP, using 89 octane on either one of those two 3076's. But to even have a chance you'd need to configure the turbo with a loose, probably 1.06 single-scroll turbine housing. This would kill your spool and response anyway on the 2L. mill. But, bottom line is that I don't think that either of the two compressors will be able to move enough air to push a 2L. motor up close to 500WHP on 89 octane junk gasoline.

Neither, is the FP Green going to get a 2L. engine with HKS 272 cams up over 450WHP, at least not on 89 octane pump gas. Let's get real. I think that you will need to rethink your turbo choices.

Also the combination is important: i.e. you would need serious supporting mods to have a chance of reaching your power goals even given the slightly better flowing GTX 3076. I mean biggie intercooler, Magnus IM, header, good intake, TB, better flowing ported head, bigger cams, etc.