silver99hatch

I was thinking of upgrading my old ITS GT61 turbo to the GT72.Has there been anybody that has used this turbo on a street/track B-series?This is a non-ballbearing CHRA with a P-trim w/.68 ar.If you have ran this turbo please post setup and numbers.Thanks

flip1199

wow.. what's your hp goal? that turbo is good for up to 900whp. have u looked into the gt70's? those are geared more for 540-760whp and max around 800-840. or even the gts70.

Justin Olson

That compressor wheel is way too big for the P trim turbine wheel. You just wont make the power you ough to.

If you want a big turbo like that, check out the gt42R if you can fit it.

Justin

boostedcivicsir

not top hijack, but your slayer av is bad ***.

silver99hatch

The p-trim wheel is what the turbo has on it.I don't have the money to buy a new turbo after buying a t67bb and now selling it.I know I can't max out that turbo with the p wheel and ITS said gts70 would not be wise for lower boost on the street.I'm looking for 500whp for the street and 700+ for track.The gt42r is way too big for the inline pro manifold.

Justin Olson

one of these journal bearing gt40's might be the ticket for you then:

http://www.atpturbo.com/Mercha...e=BCS


Check out the compressor map. Should be able to do 700whp and spool a lot sooner then a 72/P trim.
http://www.turbobygarrett.com/...2.htm

Regards,
Justin

Boostfed

Are you talking about the Billett ITS 72mm Wheel?

silver99hatch

I know the one of the GTS70's is billet but don't know about the GTS72.That GT4088 looks good but wasted the money on that pt67bb that I don't care for.When I called ITS they said that the GT72 would about 500-700 rpms later than the GT61.They also said that that wheel is compareable to a GT42R.Which is fine with me.The thing is that I was trying to make good power with lower boost.I am stuck with the pt67bb or the upgrade the gt61.

Boostfed

Man the PT67BB is an AWESOME turbo and is good for 750whp maybe more actually! Do you have a P trim wheel in it? I made 540whp onm 18psi on my B16A with a T4/T67 P trim .68 A/R , I also did 14psi pump gas before headwork made 424whp too, I can only imagine how awesome it is with a Duall BB center section!

flip1199

did they give u a reason why the gts70 wouldnt be good for lower boost on the street? and what's there def. of lower boost? i dont see why they would tell u it's not good for lower boost since u wanted between 500-700 and that's what the turbo is advertised for. says on their website the 70mm turbos are good for around 550-760hp, so that's right in your range with less lag.

b16hybridsol

i'll be running a hybrid version of the gt72

gt72 compressor wheel with the big gt compressor cover
dual ceramic bb center
GTQ trim 1.06 ar divided tang T3 turbine

good for what i need: full boost by 4700ish easy 700whp top end

personally i found i'd be off the map on a 4088r and the 42r wasn't an option (cost, spool time, etc.)


Modified by b16hybridsol at 1:38 AM 12/31/2005

flip1199

so a t3/gt72? have u dynoed it yet?

uglyasscivic

The Billet wheel that is in the PTE71 is the same wheel that is in the Innovative GTS70. The wheel is actually made by Borg Warner and it called a K31. If you want to run the T72 the P-trim will be a huge restriction and will decrease volumetric efficiency drasticly at high boost. There nothing better then trying to reburn 1250 degree exhaust gas.

silver99hatch

They said it might hit the surge limit at 15-18 pounds on the street.I really like the map on it and wanted the billet wheel.My comp housing is also the 1.01ar.The spool time from the PT67R is about 3000rpms where the GT61 w/10 blade BS wheel was about 3500.Yes they are both a P-trim setup did not want to change the exhaust housing.I only went with the T67 because precision had a deal on the BB CHRA's.I have seen nice numbers with the T67.But my car feels about the same as the GT61 but quicker spooling.I still remeber years ago when I called around and asked what would be the biggest turbo to put on a street driven Honda and was told T61.It would spool around 5000rpms.What a joke that was.I guess I should not believe every thing I hear.

b16hybridsol

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by flip1199 &raquo;</TD></TR><TR><TD CLASS="quote">so a t3/gt72? have u dynoed it yet?</TD></TR></TABLE>
setup is still in the works i haven't even made the mani yet

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by uglyasscivic &raquo;</TD></TR><TR><TD CLASS="quote">The Billet wheel that is in the PTE71 is the same wheel that is in the Innovative GTS70. The wheel is actually made by Borg Warner and it called a K31. If you want to run the T72 the P-trim will be a huge restriction and will decrease volumetric efficiency drasticly at high boost. There nothing better then trying to reburn 1250 degree exhaust gas. </TD></TR></TABLE>

i can see the p-trim being a restriction, but the way i've figured things high boost will only be 30ish give or take and with my h22 not quite displacing 2.2 i don't really see it being a problem with my setup, unless you're seeing something i'm not

Justin Olson

You have more displacement, and a small exhaust wheel. You just wont be able to effectively get exhaust gasses out of the combustion chamber. Thats why cort was saying 1250 C exhaust gas doesn't burn well. You will have a lot of backpressure with that wheel.

silver99hatch

I know the P-trim wheel will be problem at higher boost.But I think I want to stay under 30psi.What ever power that will give on a fully built motor with 35k miles on it.It's not like I going to be running SFWD class with it...just DD and some local 1/8 and 1/4 mile tracks.When I can afford the time off and get better weather around here.Not to diss PTE but they told me that they ONLY used Garrett parts.Because I was trying to figgure what my GT61 wheel was cause it was bigger exducer than PTE 61mm wheel.But it has the big A for Airresearch.Like the old Dodge turbos.
Is Cortney talking to me or the guy with the H22?I have only a 1.9L

b16hybridsol

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by silver99hatch &raquo;</TD></TR><TR><TD CLASS="quote">I know the P-trim wheel will be problem at higher boost.But I think I want to stay under 30psi.What ever power that will give on a fully built motor with 35k miles on it.It's not like I going to be running SFWD class with it...just DD and some local 1/8 and 1/4 mile tracks.When I can afford the time off and get better weather around here.Not to diss PTE but they told me that they ONLY used Garrett parts.Because I was trying to figgure what my GT61 wheel was cause it was bigger exducer than PTE 61mm wheel.But it has the big A for Airresearch.Like the old Dodge turbos.
Is Cortney talking to me or the guy with the H22?I have only a 1.9L</TD></TR></TABLE>
any pics of the wheel?

I think he was talking to me and i feel like an *** now because while the gt72 wheel is getting put in so does a GTQ on the turbine side. I got mixed up because as of right now its a 67 compressor and a p-trim

silver99hatch

So what will be the max Hp or boost that the P wheel can handle?I mostly drive the car to and from work.I might of said this before if I can't max out the GT72 not a big deal.I would like to get some high numbers on 93oct (low boost) and only turn up the boost for the couple of times I can get out to the track.Maybe I just need to find a mustang dyno around me to compare power from the last setup.Thanks for the info.

Justin Olson

Why not trying a GT40 turbine wheel. From what I've heard its a good match to the gt4294R compressor wheel which is 70.3mm inducer 94mm exducer. That would be a better match then the P trim. P trim turbines have made 700+whp but that is hooked to the t67 compressor wheel which has a 84mm exducer, thus having a fairly small moment of inertia for its power capability. When you step up to a 72mm inducer wheel, you'll have a 97.8mm exducer which is huge. You have a big mismatch in my opinion. You won't really be able to take advantage of the gt72 compressor wheel, but do what suits you.


Modified by Justin Olson at 6:53 PM 1/1/2006

b16hybridsol

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by silver99hatch &raquo;</TD></TR><TR><TD CLASS="quote">So what will be the max Hp or boost that the P wheel can handle?I mostly drive the car to and from work.I might of said this before if I can't max out the GT72 not a big deal.I would like to get some high numbers on 93oct (low boost) and only turn up the boost for the couple of times I can get out to the track.Maybe I just need to find a mustang dyno around me to compare power from the last setup.Thanks for the info.</TD></TR></TABLE>

honestly you are betteroff calling them and figuring out what you want/need from your car, then having a custom turbo built..They aren't that much more

silver99hatch

I get what you are saying..it's that i was thinking of upgrading the turbo that I have.The wierd thing about the ITS GT61 is that it has a 90mm exducer.I have comfirmed it with ITS that it is a GT61.Does the 10 blade wheel flow more than the 11 blade turbine?The reason for asking this is the dump tube is way louder with the 11 blade P wheel from the T67.When I talked to ITS they did not say that this would be a bad choice and did not give max numbers for that pair.But that could be someone just trying to sell.What would suggest then on a new comp wheel that would work with the ITS P-trim CHRA?Remember that I am now using a TO4R and i'm not to fond of it...and thanks for helping.