T3 housing versus buick housing

[trixdout]

So in the sticky it says 3 bolt housing flows fine up to 900hp. Your answer Is there. Do you have the passenger side header that's 3 bolt or 4 bolt? The Buick housing is the way to go if you are getting it made to custom specs


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[jpwalt1987]

http://www.turbobuick.com/forums/index.php?threads/391104/

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[robzombie]

This is what he came up with. It supports about 80lbs/hr. I can't wait to get it installed and make some boost!!

At what boost level are those numbers [lbs./hr.] ?? I was told that I would be at 71lbs./hr. at 22/23 lbs. making 720/750 hp.

So in the sticky it says 3 bolt housing flows fine up to 900hp. Your answer Is there.

Yes and no. I was told to go with the T4 housing as it's more efficient throughout the RPM range [even more so up top] and to go with the 3" outlet instead of 2.5" because that's the size of my I/C piping.

I hate trying to find the right turbo. I want to go 3 bolt but I want the best performance from top to bottom of the rpm range. I was told the 4 bolt will perform as good or better down low and would be a lot better above 5,000 rpm.

Has anyone run both housings to give me an idea of how much difference it really makes if any at all.

ROB

 

[20psiofevil]

V band in/out is the way to go for simplicity or install/removal. Other than that I don't think you will notice any gain other than sizing the appropriate ar which you will have more choices with on a tang or v band housing. Would also like to add that I feel .63 ar is small for a v6 that pulls past 6000rpm like mine does.

 

[robzombie]

V band in/out is the way to go for simplicity or install/removal.

I can have my turbo off in less than 15 min. Not that I want that in a turbo, I would prefer it be able to stay on for fifteen years.

Other than that I don't think you will notice any gain other than sizing the appropriate ar which you will have more choices with on a tang or v band housing.

If I knew for sure there wasn't any difference I would stay with the three bolt.

Would also like to add that I feel .63 ar is small for a v6 that pulls past 6000rpm like mine does.

I shift at 5,800/6,000 right now and will go with the .63 as I feel it will spool faster and not hurt in any way in the rpm range I'd be running.

One good thing is that I can send it back and get anything changed on it if I'm not happy with it.

 

[20psiofevil]

Curious, have you spoke with any of the turbo tech's like garrett, precision, or bw? The v-band inlets do offer more than simplicity, think I read they offer quicker spool.

What is your goal? If you are going with a 67mm the 6766 cea or 91/79 extended tip are the 2 top 67mm turbos imo. Although you are not going to find the 91/79 in 63 ar but may be able to go with a twin scroll and utilize quick spool valve if spooling is an issue.
Throwing out ideas...

 

[robzombie]

Curious, have you spoke with any of the turbo tech's like garrett, precision, or bw?

I don't want a precision as I said in a previous post and the reasons why. I looked at garrett but not BW.

I've looked at a few brands,but keep coming back to the comp turbo :
CT3-6765 333300-0005 Dynamic Aluminum with water ports HE 65 930
or
CT3-6767 333300-0006 Dynamic Aluminum with water ports HE 67 940

I can get it in any configuration : A/R, housing, 3bolt with or without W/G hole, or T3/4 and so on.

That's why I have so many questions as there are many options and if I can build the best turbo for my needs I'd like to get it right the first time.

 

[Mike Licht]

The T3 4 bolt housing will not work as well as the factory 3 bolt, A T4 4 bolt will out perform the factory 3 bolt housing at almost any power level. We will have a 66MM Borg Warner on display at bowling green that can be built either way
Mike

 

[robzombie]

We will have a 66MM Borg Warner on display at bowling green that can be built either way

Is it something you can share with me now??

Do you have pics/specs that I can mull over??

I would like more info if possible on both the T4 and 3 bolt pros and cons of each and what A/R is best.

You could PM me if you wish. Thanks RZ.

 

[Mike Licht]

I need to hold the details for a few more days, as far as turbine housings go if one was "the best" we would only sell that. Combo and application can dictate A/R 4 bolt is better but headers and downpipe are more work
Mike

 

[robzombie]

Combo and application can dictate A/R

Everything is in my sig, what do you think would be best for my overall goals?

I can go 4 bolt T4 if that's the way to go for quick spool and power thru the mid rpms up to 6,000 rpm.

 

[Mike Licht]

What are your goals with the car?

 

[robzombie]

What are your goals with the car?

I'll use the precision 6466BB as an example of what I'm looking to achieve from what I've read in the 6466BB thread.

Mid ten capable at around 22/25 lbs. of boost and nines in the 30/35 lb. range when I do the needed upgrades to make it live.

I won't go with that turbo [precision] because of price and bearing failure issues in the BB lineup along with cost to repair when there is a problem. And now that garrett is no longer associated with them that brand is off limits for me.

I would live with a little lag down low as I know that the BB turbos can be bigger than what I run now as they spool about 200 rpm faster and I also run a 3,500 stall so I was thinking that I could run the 6767, but I could go 6765 or smaller if that would net me the results I'm looking for.

I'm also running an ext. gate so that's one of the reasons I'm considering the T4 over three bolt. I wouldn't be using the internal gate because I can get the 3 bolt made without the internal gate and still go that route for ease of installation as long as performance was the same or close between the two housings.

 

[Mike Licht]

the T4 will make more power, I think I have what your after, will you be in Bowling Green?

 

[kidglok]

I'll use the precision 6466BB as an example of what I'm looking to achieve from what I've read in the 6466BB thread.

Mid ten capable at around 22/25 lbs. of boost and nines in the 30/35 lb. range when I do the needed upgrades to make it live.

I won't go with that turbo [precision] because of price and bearing failure issues in the BB lineup along with cost to repair when there is a problem. And now that garrett is no longer associated with them that brand is off limits for me.

I would live with a little lag down low as I know that the BB turbos can be bigger than what I run now as they spool about 200 rpm faster and I also run a 3,500 stall so I was thinking that I could run the 6767, but I could go 6765 or smaller if that would net me the results I'm looking for.

I'm also running an ext. gate so that's one of the reasons I'm considering the T4 over three bolt. I wouldn't be using the internal gate because I can get the 3 bolt made without the internal gate and still go that route for ease of installation as long as performance was the same or close between the two housings.

the ability to be mid ten capable on a "low" boost range will be determined by the build more so than the turbo. Cam/compression and head flow will allow more cylinder fill thus lowering the psi reading on the boost gauge. I know someone with a 6765 that has been 9's with a mild cam at 28-29psi with iron heads. 8-28psi in a little over 1 second off the transbrake with a PTC converter. This is a journal bearing unit.

 

[Mike Licht]

you are 100 % right but the turbo still have to be able to supply the air, if that guy puts a TE44 on his car he is not going 9's

 

[bison]

you are 100 % right but the turbo still have to be able to supply the air, if that guy puts a TE44 on his car he is not going 9's

Yup. He'd likely still run high 10's and be about a second faster than the typical postings we see here. We need to get that guy a new helmet because his old one must not fit his head too well anymore

 

[kidglok]

^ Lol EASY


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[robzombie]

the ability to be mid ten capable on a "low" boost range will be determined by the build more so than the turbo. Cam/compression and head flow will allow more cylinder fill thus lowering the psi reading on the boost gauge.

That's why I put everything in my sig, so that I could get an accurate answer on any questions that I may ask.

If I don't have what it takes to meet my goals that's fine. I want the truth and what if anything would need to be done to make said goals.

The one thing I'm not completely sure of is the compression, which I believe is in the 8.5/9 range.

 

[robzombie]

I think I have what your after, will you be in Bowling Green?

As of right now I doubt it, but I may go down for a day as a spectator and look around and meet some people if possible.

If you can't tell me now that's fine. If you have to wait until after the nats for the unveiling I understand.