Fuzion

as far as a street turbo on stock bore and stock on a LS, what will the spool times be like? The car will be ls/vtec latta down the road, whats the potential of all thre turbos, sc61e, sc61s and the full-race t3/t67. The car will see track time about 1-2x a month, mostly a street . Love fab sidewinder manifold is what im using. @ low psi say 7-10psi which turbo will yeild more power? High psi, which turbo will yeild more power? Waht is th emax psi these turbos can handle?...thanx HT maybe somebody will answer my question this time

TwistedHatch

according to what i'm slowly learning/still kinda trying to figure out, the t3/t67 full race turbo will move more air, and has near identical lag times

Jared

You might wanna ask ARturbo about that one, and to add confusion, throw the SC63 and PT67 into the mix. Doesn't the PT67 come with a T3 hot side, that would be a fair comparison.


Modified by Jared at 7:05 PM 12/6/2003

alpha

You are going to get theoretical replies. No one to my knowledge has tested the SC61E against the T3/T67 on the same motor with identical testing conditions.

DIRep972

iTrader: (1)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 0x64 &raquo;</TD></TR><TR><TD CLASS="quote">You are going to get theoretical replies..</TD></TR></TABLE>

Yup. All I am going to say is that the SC61 has done more then prove its worth around here.

*Boostwerks*

Someone on here (can't remember name) just made 420hp on a 81.5mm B18C at 13psi with just 91 pump gas with the Full-Race turbo.

In my opinion...I think the T3/T67 is the ultimate pump-gas street car turbo.

Suprdave

I saw the new Precision PT67 @ PRI...it was pure sickness.

alpha

I have seen Precision SC61's make some insane numbers too. The fact still stands they have not been tested against each other on the same motor, same setup, same boost level and same testing conditions. Also, the T3/T67 comes with an S compressor housing so it would have to be tested against an SC61S.

alpha

Suprdave reminded me of something. Should you even try comparing the T3/T67 since it has a 67mm inducer wheel when the SC61 61mm inducer wheel?

*Boostwerks*

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 0x64 &raquo;</TD></TR><TR><TD CLASS="quote">I have seen Precision SC61's make some insane numbers too. The fact still stands they have not been tested against each other on the same motor, same setup, same boost level and same testing conditions. Also, the T3/T67 comes with an S compressor housing so it would have to be tested against an SC61S.</TD></TR></TABLE>

Very true.

Even though the turbos are different sizes, why would a comparison be good?...

Because they have been "said" to have the same spool up rates...and the HP potential that Geoff has given me is roughly the same as the SC61.

It would be awsome to see an overlap graph of the two turbos (all other factors being equal).

alpha

It would be nice if we could see a couple different turbochargers on the same motor with the same testing conditions overlapped on a sheet. If I can find the money and time next year and VaporTrail (my tuner) can find the time I am going to try and do this. Maybe not the SC61S and the T3/T67 but ...

*Boostwerks*

Right on!

I'm still kinda pissed that we never got the Manifold competition going.

I understand how hard it would be to setup something like that, but everyone "seemed" so ready and willing.

alpha

Either way though you are going to see insane numbers and a good amount of boost at your desired RPM level with these turbochargers. The SC61E and SC61S are different in size from the T3/T67 though.

*Boostwerks*

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 0x64 &raquo;</TD></TR><TR><TD CLASS="quote">Either way though you are going to see insane numbers and a good amount of boost at your desired RPM level with these turbochargers. The SC61E and SC61S are different in size from the T3/T67 though.

</TD></TR></TABLE>

The T3/T67 turbo uses the standard S housing...so they should look fairly similar externally. Of course the Compressor wheel is 6mm bigger, and Precision only uses the 5 bolt T3, where as the Full-Race is a 4 bolt.

alpha

Precision has the option for a 4-bolt Garrett housing at no cost. What's the wheel inducer and exducer size on the T3/T67? We all know what they are for the SC61E (given a 56 trim compressor and a 76 trim turbine wheel trim) but we (or at least I) don't know what they are for the T3/T67.

boosted92

These are just from memory here so I could be wrong
2.62 inducer
3.30 exducer
was what I was told on a straight PT67, so i'm guessing the compressor side is identical to a T3/t67

Arturbo

A pt67 is a T4 67mm wheel inducer. The specs of the 67mm wheel are 2.620"/ 3.310". A SC67 would be a T3 with a 67mm wheel.

If you want a T3 67mm we can do that too.

The 61mm wheel of the SC61 is 2.416"/ 3.227".

Now, the 67mm will always make more power. But it is my opinion that the biggest you want to go on a t3 is a 61mm. I am not saying I am right or wrong, just my opinion. But if you want a T3/67 we can do that too.

I wouldnt even bother with the SC63. From the 61mm jump to the 67mm wheel.

art..

*Boostwerks*

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Arturbo &raquo;</TD></TR><TR><TD CLASS="quote">A pt67 is a T4 67mm wheel inducer. The specs of the 67mm wheel are 2.620"/ 3.310". A SC67 would be a T3 with a 67mm wheel.

If you want a T3 67mm we can do that too.

The 61mm wheel of the SC61 is 2.416"/ 3.227".

Now, the 67mm will always make more power. But it is my opinion that the biggest you want to go on a t3 is a 61mm. I am not saying I am right or wrong, just my opinion. But if you want a T3/67 we can do that too.

I wouldnt even bother with the SC63. From the 61mm jump to the 67mm wheel.

art..</TD></TR></TABLE>

Thanks for the info art!

How much $ would the SC67 be?

Full-Race Javier

the T3/T67
-4 bolt T3 turbine housing, stage V wheel, 0.63 AR
-comp specs inducer=2.620 in. major=3.310 in, T04S housing, 0.70 AR, 63 trim

i think you will see very similar spool characteristics between a SC61 and a T3/T67 if both use a stage V wheel in a .63 AR....this is only a guess on my part though. my reasoning being that the turbines characteristics play a big part in response/performance....as long as you dont horribly mismatch the turbine and comp wheel.

JGurr81

I was told by somebody knowledgeable that the stage 3 wheel spooled faster, but i could be wrong?

Arturbo

Javier is correct about the mismatch of wheels. A stage 3 will spool faster on a T04E compressor wheel. BUT you dont want to put a stage 3 wheel on either 61mm or 67mm compressor wheel. Having a stage 3 turbine on either the 67mm or 61mm would be a huge mismatch of wheels.


art

JGurr81

is it bad for the turbo(say a SC6) w/ .63A/R to have a stage 3 wheel?

Arturbo

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JGurr81 &raquo;</TD></TR><TR><TD CLASS="quote">is it bad for the turbo(say a SC6) w/ .63A/R to have a stage 3 wheel?</TD></TR></TABLE>
SC??

JGurr81

haha oops my bad, SC61, the reason I ask this question is because I was recommended the Stage 3 wheel for my setup, so just was wondering

DIRep972

iTrader: (1)

St00pid tuned a car a few months ago running an SC63 and an SC67... On the SC63 they ran a T04 P-trim exhaust wheel. The car made 497whp @ 27psi... He wasn't happy w/ the results and switched over to a SC67. The SC67 was using a larger compressor wheel but he used the T350 stage 5 exhaust wheel. It made less power, about 20 less hp if I remember correctly...

This just shows proof of what javier said above, "my reasoning being that the turbines characteristics play a big part in response/performance." When it comes down to making big power the exhaust side of the turbo becomes so much more important. Look at Jason's tuning job above, he made more power w/ a smaller compressor wheel because of the exhaust side..

My opinion here, but I don't think the 67mm compressor wheel is going to show its true potential until you match it up w/ a T04 P-trim exhaust wheel and .68AR T4 exhaust..