p-67 bb or 45a turbo

[Lturbo6]

I have champion ported iron/ champion intake, 65 moton, pte front mount, precisiosion vig stall 2800- 3200. which turbo to choose from? I got baby at the shop right now and debating which turbo to use, I know the 45a is a proven turbo but how is the lag compare to the 67 bb. Trying to go mid 10's.
I want a good light to light turbo.

 

[DCVING 6]

Doesn't the 45a have 66mm wheels? I would think mid 10's would be easier with a 67, not to mention the fact that it is a ball bearing.

 

[Westside500]

Doesn't the 45a have 66mm wheels? I would think mid 10's would be easier with a 67, not to mention the fact that it is a ball bearing.

They do have 66 wheels.. I would go with the 45a from Limit....the 67 is great up to 25psi then falls off.. the 45a is just in the sweet spot at 25psi

 

[Lturbo6]

Yes the 45a is an 66 wheel. I was wondering what the stall requirement for the 45a. I'm trying to hurry the decision so the shop can get the right turbo for my setup. I wonder arre they rated similar to one another horsepower wish.

 

[Westside500]

Yes the 45a is an 66 wheel. I was wondering what the stall requirement for the 45a. I'm trying to hurry the decision so the shop can get the right turbo for my setup. I wonder arre they rated similar to one another horsepower wish.

3500 is plenty of stall with the 45a.. if you need more..you have other problems.

 

[brian]

With the Vig converter I would recommend the 67.
The spool up will be better IMO, especially for "light to light" contests.

Brian

 

[John Wilde]

Max boost is not the best way to gauge a turbo's efficiency on a combination.
Since the 66 wheel makes ~700cfm and the 67 wheel is making ~ 800cfm
does it really matter the the 66 takes more boost to make less power???
Both compressor maps are on the internet!!!

Think about it guys.

 

[Lturbo6]

Max boost is not the best way to gauge a turbo's efficiency on a combination.
Since the 66 wheel makes ~700cfm and the 67 wheel is making ~ 800cfm
does it really matter the the 66 takes more boost to make less power???
Both compressor maps are on the internet!!!

Think about it guys.

So John which one would you go with!

 

[RUQWKNF]

The PT6776RS with ball bearing chra will spool up quicker than a TE-45A with a 3500 stall converter. The only differences between these two turbos are the compressor wheel and compressor cover. (TE-45a has an older T series 66mm compressor wheel and a TO4E compressor cover, PT67 has a GT series 67mm compressor wheel and comes standard with the TO4S compressor cover, with optional H cover available) They have the same turbine wheel and turbine housing specs. P-trim wheel and PTE turbine housing. However, the TE-45A uses a big shaft P-trim wheel where as the PT67 uses a small shaft P-trim wheel. At this level, we never saw any reliability issues. There is a big difference in price between the two however. Both turbos will get the job done, but if I had to chose between the two, I would choose the 67 ball bearing for quicker spool up and reliability factor. If you build the combo the right way, a PT6776RS will push a full weight Buick easily into the mid to low 10's running boost levels in the 24-28psi range. The PT67 is rated to support up to 750 fwhp and I do believe the TE-45a (same as a T64E from PTE) is rated at 700-710 fwhp capability.

HTH

Patrick

 

[John Wilde]

IMO only the 67BB should make more power and spool better.
It is also more expensive.
If it was me I would do do the 67. =)

 

[Lturbo6]

Thanks fellows. I got a few co-workers at work who don't respect the power of the 20 year old buford. They need an lesson in brickyard physics.

 

[John Wilde]

Thanks fellows. I got a few co-workers at work who don't respect the power of the 20 year old buford. They need an lesson in brickyard physics.

Please break him off something and then tell us about it.

 

[Louie L.]

Ive had both units. I loved the TE45a. But I would pick the PT67 all the way. Its more stretable and runs much harder at low boost levels than the TE45a.

On a second note I ran the 67 with a 3200 Ac and it spooled really good. This was a NON BB turbo.

 

[bison]

A PT67 .85ex non ball bearing is ok with a 3k stall. The BB version would surely spool like lightning with a free flowing exhaust. Ive gone 127mph at over 3700 lbs in a friends car with the 67.

 

[Lturbo6]

Yeah bb for me. Have to wake Bruce at aggressive up to make the change. I'm not playing around with these clowns of mines at work. U know what they will say if I win. i know someone you can't beat. Just waiting on my alky and hr swaybar now. Have to catch him quick if I don't want the 45a. I want to run around 25 pounds or less if my numbers are where they should be. By spring I should be roasting some tires pretty regularly.

 

[John Wilde]

A PT67 .85ex non ball bearing is ok with a 3k stall. The BB version would surely spool like lightning with a free flowing exhaust. Ive gone 127mph at over 3700 lbs in a friends car with the 67.

Thanks for the information bro.
I want to try a 67BB with a stock converter now!!!

 

[Dr.drivability]

i WENT TO A 67BB, good choice. I love it.

 

[menmy6]

They do have 66 wheels.. I would go with the 45a from Limit....the 67 is great up to 25psi then falls off.. the 45a is just in the sweet spot at 25psi

25 is a good number for 67 but it's power is at 28psi a nice turbo .All the Supra guys run 9high low 10's easy with a 67

 

[bison]

Thanks for the information bro.
I want to try a 67BB with a stock converter now!!!

The stock converter would be a bad choice for this turbo as you you would be in the surge area at low rpm if it spooled. Also a cam with at least 210 degrees duration at. 050 would better utilize the turbo. Not to mention how hard a tight stock converter would be on the trans internals. When i ran his car the converter kept the engine at a minmum of 4900 rpm under full boost but spent most of its time around 5200 before climbing to over 6k for those 127mph quarter passes. Hardly attainable with the stocker as it would pull the rpm way lower on shift points throwing it out of the power band.

 

[bison]

25 is a good number for 67 but it's power is at 28psi a nice turbo .All the Supra guys run 9high low 10's easy with a 67

Ive never seen a Supra e.t. better than 11.40. I know a lot have but i have yet to see it. Ive seen many hit 130mph in the quarter at the strip. The ones you are talking about must be set up to drag race. The ones ive seen sure werent. Also they will hit a higher mph at the same weight as us because of the lower coefficient of drag on the top end. The 67 is pretty much out of steam over 28psi on our engines at 6000rpm. I ran 26.5psi to go 127mph at 3700+lbs.