HTA3076 VS GTX3076 help
Feb 20, 2012, 06:50 AM
#16
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TwStDeVo, makes an interesting observation above. On 89-90 octane pump you are probably going to need something with a colder blowing, relatively large, compressor. I agree with the HTA 35R/.63. This turbo should be capable of producing the power that you seek. The HTA 3076/.63, on the other hand, has not been able to get anywhere close to 500WHP on a built 2L., using 91 octane pump gas AFAIK.
Feb 20, 2012, 06:57 AM
#17
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Also as he mentions. On a 2L. you are going to need to rev the pee out of it to get to 500WHP, even on Race Gas. So, the unported head and the mild cams are going to hold you back. On second thought though, you probably would be able to reach your power goal with the GTX 3076 on VP import, even with the stock unported head and your present cams. But, on crappy octane pump gas, equivalent to 89 octane it would be a different story.
Last edited by sparky; Feb 20, 2012 at 07:03 AM.
Feb 20, 2012, 06:58 AM
#18
I have no opinion between the two turbos you listed above, but when i first bought my car it came with the older style ATP3076 and i do the same things you do with your car autox, track days. ( I know the turbos you have mentioned are better)
Autox the turbo literally sucked you had to think so far ahead and the car was very hard to drive near 100% because of the lag.
Lapping days and track days on the other hand the turbo shone so it depends on which you like more. If you dont care about placing competetivly at autox events then yeah either of these are great choices to hit your power goal!
If you want to be competitive at autox you will probably need a stock frame turbo instead.
When did the OP say he wanted 500WHP did i miss that ?
Autox the turbo literally sucked you had to think so far ahead and the car was very hard to drive near 100% because of the lag.
Lapping days and track days on the other hand the turbo shone so it depends on which you like more. If you dont care about placing competetivly at autox events then yeah either of these are great choices to hit your power goal!
If you want to be competitive at autox you will probably need a stock frame turbo instead.
When did the OP say he wanted 500WHP did i miss that ?
Feb 20, 2012, 08:03 AM
#20
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cheers mate. I dont know how i forgot to mention that i'm also using water injection.
the hp i would like to reach is at the crank
also the "race gas" we have here is pretty expensive. we have a pretty steady supply of VP 109, C16, C12 and Q16...meth is way cheaper but i only use it with the water injection, never tried it with gas....
I do intend to get a bigger intercooler and throttle body, not sure if i really need to change the manifolds to reach 500hp. Do I or is it to just make stuff easier?
From what I'm seeing, for response the gtx 3071 wud be better but too expensive for me to run because of the need to have a higher octane fuel to support to achieve the 450-500hp target.
the hp i would like to reach is at the crank
also the "race gas" we have here is pretty expensive. we have a pretty steady supply of VP 109, C16, C12 and Q16...meth is way cheaper but i only use it with the water injection, never tried it with gas....
I do intend to get a bigger intercooler and throttle body, not sure if i really need to change the manifolds to reach 500hp. Do I or is it to just make stuff easier?
From what I'm seeing, for response the gtx 3071 wud be better but too expensive for me to run because of the need to have a higher octane fuel to support to achieve the 450-500hp target.
Feb 20, 2012, 08:12 AM
#21
i went through the same dilemma as the op recently,gtx 3071 vs gtx3076 though?
i asked around ,searched every forum known to man and even pmed some folks that had them listed on their sigs with no reply,so i end up going to the source and emailing ATP and asked them for more details on both turbos,how they compare with some dyno sheets maybe showing spool charecteristics and trying to get some proof of their claim that the stock location kits spool up 1000 rpm sooner than the regular single scroll 3076/3071
http://atpturbo.com/root/releases/release121410.html
3 weeks later im still waiting for that email
They look good on paper
i asked around ,searched every forum known to man and even pmed some folks that had them listed on their sigs with no reply,so i end up going to the source and emailing ATP and asked them for more details on both turbos,how they compare with some dyno sheets maybe showing spool charecteristics and trying to get some proof of their claim that the stock location kits spool up 1000 rpm sooner than the regular single scroll 3076/3071
http://atpturbo.com/root/releases/release121410.html
3 weeks later im still waiting for that email
They look good on paper
Last edited by flyingscot; Feb 20, 2012 at 08:26 AM.
Feb 20, 2012, 08:33 AM
#22
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Just an FYI Perrin Performance did some back to back testing on the new GTX Turbos Vs. The older GT series turbos. I know it's not an HTA comparison, but it's good info none the less. The old gt series turbos were the proven choice for many years.
http://blog.perrinperformance.com/ga...turbo-comparo/
http://blog.perrinperformance.com/ga...turbo-comparo/
Feb 20, 2012, 10:29 AM
#23
cheers mate. I dont know how i forgot to mention that i'm also using water injection.
the hp i would like to reach is at the crank
also the "race gas" we have here is pretty expensive. we have a pretty steady supply of VP 109, C16, C12 and Q16...meth is way cheaper but i only use it with the water injection, never tried it with gas....
I do intend to get a bigger intercooler and throttle body, not sure if i really need to change the manifolds to reach 500hp. Do I or is it to just make stuff easier?
From what I'm seeing, for response the gtx 3071 wud be better but too expensive for me to run because of the need to have a higher octane fuel to support to achieve the 450-500hp target.
the hp i would like to reach is at the crank
also the "race gas" we have here is pretty expensive. we have a pretty steady supply of VP 109, C16, C12 and Q16...meth is way cheaper but i only use it with the water injection, never tried it with gas....
I do intend to get a bigger intercooler and throttle body, not sure if i really need to change the manifolds to reach 500hp. Do I or is it to just make stuff easier?
From what I'm seeing, for response the gtx 3071 wud be better but too expensive for me to run because of the need to have a higher octane fuel to support to achieve the 450-500hp target.
If you really want to hit that 450-500 crank hp number, you might be better off going to a bigger frame size turbo, GT35 size.
Feb 20, 2012, 12:24 PM
#24
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3071 is a dead end on an Evo. You'd be waaay better off with an FP-Green. For GTX3076 vs. HTA3076, I'd lean towards the HTA. However, for the OP's power goals, I'd be looking at a stock frame turbo (Green, Red, BBK-B, etc.) instead of any kind of T3/T4 turbo.
l8r)
l8r)
Feb 20, 2012, 03:21 PM
#25
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Yup shell V power is about the best pump gas we have on this lil rock....I'm gonna get the GTX3076 with a 4" intake and use antilag for the track days and crazy road driving lol.... Slowboy/built Industries are offering it at a fair price......then I'm going back for that sub with the fp green that handed me my *** the otherday.....thanks guys
Mike told me I'm gonna love it, so I hope you and he are right.
The real reason I don't want the GTX35r is cuz I want as little lag as possible, I know that after 5000rpm the 35r kicks the 3076's *** but I really want the low end punch.
Or I'll have a drive in a friends evo, he just put on the gtx35r. Maybe a real drive might change my mind of the smaller turbos, who knows it might not be as bad as I think for the street and corners like I've been hearing. I'm scared ****less of entering a corner and the power not be there.
Thanks again, don't laugh at me too bad.
Mike told me I'm gonna love it, so I hope you and he are right.
The real reason I don't want the GTX35r is cuz I want as little lag as possible, I know that after 5000rpm the 35r kicks the 3076's *** but I really want the low end punch.
Or I'll have a drive in a friends evo, he just put on the gtx35r. Maybe a real drive might change my mind of the smaller turbos, who knows it might not be as bad as I think for the street and corners like I've been hearing. I'm scared ****less of entering a corner and the power not be there.
Thanks again, don't laugh at me too bad.
Feb 20, 2012, 04:43 PM
#26
Here's a comparison of GT3076 vs. HTA GT3076
http://www.motorgeek.com/viewtopic.php?t=34852
generally speaking HTA will spool sooner and the GTX, of the ones I've seen, is laggier than the regular GT3076 but will of course give you more top end.
Then again I've seen some HTA that spool slower than your regular GT3076 by 200rpm but those are probably exceptions (hopefully very few exceptions)
http://www.motorgeek.com/viewtopic.php?t=34852
generally speaking HTA will spool sooner and the GTX, of the ones I've seen, is laggier than the regular GT3076 but will of course give you more top end.
Then again I've seen some HTA that spool slower than your regular GT3076 by 200rpm but those are probably exceptions (hopefully very few exceptions)
Feb 20, 2012, 05:15 PM
#27
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well my guy put on the gtx 35r yesterday and is tuning tonight so i'll go for the ride.....SIGH yes i said for the ride, this lil rock doesn't have a 4wd dyno
Feb 21, 2012, 02:47 AM
#30
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Why didn't you say earlier that all you wanted was 450-500 "crank" horsepower? This is easy and best achieved with a bolt on turbo. Your best bet is either the CBRD BBK-Full, or the FP HTA Green. Both are available in ball-bearing versions. These are both responsive pump gas turbos capable of meeting/exceeding your power goals. You could toss in the MAP EF3 as well which is a journal bearing turbo.
If you want a bit more power but still want to retain responsiveness then you can do a CBRD BB BBK-B, or an FP BB-Red. These last two will move similar amounts of air as the two 3076's that you are thinking about. but provide much better spool up than single scrolled 3076's.
If you want a bit more power but still want to retain responsiveness then you can do a CBRD BB BBK-B, or an FP BB-Red. These last two will move similar amounts of air as the two 3076's that you are thinking about. but provide much better spool up than single scrolled 3076's.