I am looking at the PT-52 turbo from precision turbo. The same ones meany and monty used.

Anyone have any idea what would be a similar set up using standard turbos, like say TO4B's etc?

I was thinking it would be something similar to a 62-1 compressor with a T3 turbine?

I would like to use these turbos, but I need a mock up first before I blow money on something that wont fit. I currently have a mock up 60's compressor housing attached to a T4 turbine housing. it looks to be like 2" bigger in diameter then my TO4B's are on the compressor side.

anyone here have any ideas?

here is the PT-52
http://www.precisionturbo.net/turboc...tegory_id=3022




I actually called precision, and they were no help at all.
the emails were even worse.

 

I believe they are of the t03 family. They are the Gn based turbo's that are somewhat of a hybrid of a t3/t4. I think the 62 housing/wheel will fit on there.

 

fyi,

meaney used 2 PT51s I believe on his turbo c4 project.

the 52s would be overkill for twins. 2 51s will pretty easily support 1200 HP. but it's way too small for a single. I would consider a PT70 - 72 for that.

 

Thanks for the replies guys.

I currently have the www.twinturbovette.net setup.
T4/t3's.
I also have a pair of TO4B's.
and one mock up 60-1housing with a T4 turbine.

I have some fitment issues with the T4/T3's (asuming it is my heads and the turbos hitting teh hood supports) and I am considering having the manifolds rebuilt by inovative turbo to lower them a bit and use 321 stainless so I wont have to worry so much about cracking.

I also planned on going with an aftermarket hood, and cutting the frame support to clear the turbos. if I rebuild so these headers I may just go with a PT-52's as they are a proven combo.

I talked to monty a bit about his set up a long time ago, so things are a bit foggy in my mind. but he said he decided to go with the pt-52's, and I thought he said meany chnaged over to them as well. I know biscanne is still on the PT-51's

anyhow, my new concern in all this is how restrictive a T3 turbine (exhaust) housing is, and will it choke the power?

I know you know your buick engines real well Rkreigh. do you know anything about those pt-52 turbine housings? are they modded at all? the picture of monty's turbos, it looks thike the turbine inlet has been machines to a bigger opening.

I called precision, and I dont know what happened. he could not tell me what I wanted to know about those turbine housings.

when I emailed them about the turbine specs they replied with they dont sell those meany headers for corvettes. which left me feeling empty inside because I did not ask this and i gave up tech there.

 

Bill, what size are your t4/t3 turbos? There are a lot of different sizes compressors and turbines that flow very differently. You need to tell us the compressor and turbine sizes that you have before anyone can make a judgement as to how much power you could get from your turbos.

 

I am drawing a blank on the specs.
I got the TO4B's from a buddy at turbonetics. I will get on him when I see him about those. I bought them because they were cheap and brand new.
The T4/T3's that came with the kit..... the owner did not know the specs so I dont. but I do know he dynoed ~580 rwhp, on a basically stock L-98. tpi and all. just forged pistons. I was mainly interested on his exhaust work when I bought the kit.

my concern is building something that makes X horsepower then wanting more. like when I built my L-98 and was bored in 2 weeks after.

I am trying to understand how a T3 exhaust housing, like the ones on the PT-52 can breath enough air to make 1200 HP. obvisouly it works. I just dont see how.
and then I need to figure out how to fit in a larger compressor housing under the vettes hood. currently my T4 housings hit the hood support. the mock up 60-1 is just a mock up, no impeller. it was so I could see how much larger physically it was then the T4's.

So if the PT-52 is physically the same size as a 60-1 housing, I am set and I can begin to figure out how to jam all this under the hood.

________________________________________ __________________
one more thing. downpipe size.
if the exit hole on the pt-52 is the same as the inducer, 2.7" I believe. would I make say 1000 hp with 2.75" downpipes opposed to using a 3"?

Downpipe size is a problem. I dont have much room in there. 2.75 inch would be a tight squeeze.

 

Im running two PT-52...with.58 a.r's..on my Monte Carlo SS

heres my site


TURBOS R 4 SALE....1000.00 For both...
Check ebay or Email me @ quanda@bellsouth.net

http://home.bellsouth.net/p/s/commun...pid=117580&ck=

 

are the .58 a.r the stock set up precision sells?