Need a new turbo- suggestions

[jpwalt1987]

After pulling my motor because of breaking the rocker pedestal on my head, I decided to send my turbo off to Work Turbochargers for a freshening. Needless to say its not pretty. It was originally built in 1996 then again in 1998. Reed said based on the way that PTE built it and the things that are wrong with it, it might be cheaper and easier to just buy a new one. So here I am with my own "What turbo to buy?" Thread.

Here is some background on the car.

DLS built 109 w/ RJC girdle
Eagle crank
K-1 rods
Diamond pistons
BHJ balancer and flywheel
Ported GN-1 heads with PAC 1203 springs
DLS 218/218 hyd roller cam .545/.512
Comp 885 lifters
70mm kennebell TB and plenum
PTE front mount
80lb/hr injectors
DW-300 pump on caspers volt booster+hotwire
Tial 44mm waste gate
3 1/2" down pipe built by me
Th-400 with Ati trans brake
ATI 10" fuel/blown converter(flashes about 5200)
Ally control single nozzle kit
Stock fuel lines (soon to upgrade)
Turbo tweak SD chip


I think that's all the relevant info. Anyway.......
I was running an old garret T-70 w/ .63 a/r

This is %100 street car. Our closest track just closed for everything but rentals and events. No test and tune. It will be built by Reed@Work turbo. Probably a Garret turbo. Any ideas on what would be the hot ticket?

 

[coach]

Maybe the new 6466.

 

[turbobitt]

After pulling my motor because of breaking the rocker pedestal on my head, I decided to send my turbo off to Work Turbochargers for a freshening. Needless to say its not pretty. It was originally built in 1996 then again in 1998. Reed said based on the way that PTE built it and the things that are wrong with it, it might be cheaper and easier to just buy a new one. So here I am with my own "What turbo to buy?" Thread.

Here is some background on the car.

DLS built 109 w/ RJC girdle
Eagle crank
K-1 rods
Diamond pistons
BHJ balancer and flywheel
Ported GN-1 heads with PAC 1203 springs
DLS 218/218 hyd roller cam .545/.512
Comp 885 lifters
70mm kennebell TB and plenum
PTE front mount
80lb/hr injectors
DW-300 pump on caspers volt booster+hotwire
Tial 44mm waste gate
3 1/2" down pipe built by me
Th-400 with Ati trans brake
ATI 10" fuel/blown converter(flashes about 5200)
Ally control single nozzle kit
Stock fuel lines (soon to upgrade)
Turbo tweak SD chip


I think that's all the relevant info. Anyway.......
I was running an old garret T-70 w/ .63 a/r

This is %100 street car. Our closest track just closed for everything but rentals and events. No test and tune. It will be built by Reed@Work turbo. Probably a Garret turbo. Any ideas on what would be the hot ticket?

I would ask Reed if there is something comparible in a Borg Warner platform. There new stuff looks really impresive and have very high pressure ratio capable turbos. They also have a new Titanium Aluminide exhaust wheel available on some stuff.

Allan G.

 

[jpwalt1987]

Maybe the new 6466.

I would love the 6466 but I don't have $2000 for a turbo. :-(

 

[HighPSI]

Maybe the new 6466.

Based on my initial testing, the 6466 is my new favorite buick turbo. I don't think he has enough fuel pump. Yeah, $1700 is a lot for a street turbo

 

[Quik Six]

Based on my initial testing, the 6466 is my new favorite buick turbo. I don't think he has enough fuel pump. Yeah, $1700 is a lot for a street turbo

I've liked that turbo since I saw this picture of Patrick holding one a couple of years ago. I'll probably look hard at one when my 6265 gives out or does not get the car to my goals.

I feel I've got a pretty good combo now and I realize if I did go to a 6466 that it would be the first of a series of changes to get the potential out of the 6466. The Greed for Speed is both addictive and expensive.

 

[jpwalt1987]

. I don't think he has enough fuel pump.

That's an easy fix. ;-)

 

[coach]

I would love the 6466 but I don't have $2000 for a turbo. :-(

What are your goals? I have mint condition Te62 with 1100 miles on it for sale. It will go 10's with your build. My friend Kevin went 11.0's with a 206 flat tappet cam and slightly ported irons with it on 24-25 psi.

 

[jpwalt1987]

What are your goals?.

Well it is a "street car"!!! Hahahaahahahaha

Honestly I want it to make enough power to go 9.80 or so. On a cold day down here It was using about 700hp worth of fuel plus the single nozzle alky at an AFR of about 10.5:1 and 25 psi boost. That was based on calculations from injector size vs. duty cycle. I know I need more fuel pump but that's relatively easy to fix. The only things the car lacks to go that fast are some C-clip eliminators for the Moser axles and a roll cage. The car felt stupid fast with that T-70 on 25psi and I was trying to work my way up towards 28-29 psi. I know it was an old school turbo but the way it spooled was acceptable. Any faster spooling and i have traction issues on DRs. I am thinking that with the new tech stuff out there I can go smaller on turbo but still go faster.

 

[coach]

Try the 67HPQ. I'm putting it on my new stroker. From what I've heard...it's bad ass. Cal likes it. Ask him what he thinks.

 

[HighPSI]

The 67 is a cheaper alternative to the 6466. They both make similar hp (935 vs 900). I don't think a 62 is going to get the job done for you. Best I've seen is mid 10's with it so far. For the 67, you may want a 65 exhaust wheel (P-trim) if your 100% street and stock stroke.
If you are using 700hp worth on injector PLUS alky, then you already have a fuel issue running in the 10's (what is your mph?)

 

[HighPSI]

Just saw you were going with a turbo from Reed@Work. I'm not familiar with what they have to offer.

 

[jpwalt1987]

I also am not opposed to changing over to a 4 bolt turbo if it would still have the same down pipe flange. I can weld a new flange on the header while they are off. I have to weld up a crack on the other side anyway. The heads flow 249/200 in/ex @.550 or so and I turn it about 6000-6200 rpm. Thanks for the suggestions.

 

[jpwalt1987]

If you are using 700hp worth on injector PLUS alky, then you already have a fuel issue running in the 10's (what is your mph?)

No mph is available. Our track just shut down except for rentals. That was on a cold day before I added the volt booster.

 

[bison]

A cast 67 with an old 76p is going to give you the best compromise of cost to performance. You'd be working it hard to squeeze a 9.80 out of it but it can and has done it. You have a similar combo to one of my old ones. I went 137+ with a cast tnetics 66. You need more than 5200 flash with that cam. You could actually run a different 218 roller and pick up power with what you have. Might be worth considering since you already figured out the springs and already have 885 litters. Sending pm

 

[jpwalt1987]

I do have a line on a used PTE 6765 DBB right now but I am curious as to what Reed has to offer in the Garret line as well as the Borg Warner stuff. I should know something mid week from him. Bison, I'll keep what you PMd me about in mind. This is really bad timing to have to replace a turbo. Might have to save some money for a bit. As far as cams go, Dan picked it out and I don't know what lobes they are. He got the exhaust flow down by using a 1.55 rocker instead of a 1.65 like on the intake. I'll see if I can find my cam card and flow sheet. When you say working the turbo hard on the cast 67, you mean like 30psi to make 9.80 power? The converter may flash a bit more. I would have to look at my data logs later. I can't stab it from a dead stop cause of traction, so my flash stall rpm might not be accurate. I know it's between 5200 and 5400 though.

 

[jpwalt1987]

Bison, here are the cam card and flow sheet.

 

[junkbrick]

Just saw you were going with a turbo from Reed@Work. I'm not familiar with what they have to offer.

Cal,

I have a few "new" Buick units that we are working up for release in the near future. I do not want to turn Jeremy's thread away from his questions so I will post up some of these units in the turbo section soon. And Jeremy, I have a little good news for you, and I will be calling you either this afternoon or early Monday! Thanks

Reed Patridge
Work Turbochargers
205.516.3946
205.874.6608
www.Workturbochargers.com

 

[bison]

I do have a line on a used PTE 6765 DBB right now but I am curious as to what Reed has to offer in the Garret line as well as the Borg Warner stuff. I should know something mid week from him. Bison, I'll keep what you PMd me about in mind. This is really bad timing to have to replace a turbo. Might have to save some money for a bit. As far as cams go, Dan picked it out and I don't know what lobes they are. He got the exhaust flow down by using a 1.55 rocker instead of a 1.65 like on the intake. I'll see if I can find my cam card and flow sheet. When you say working the turbo hard on the cast 67, you mean like 30psi to make 9.80 power? The converter may flash a bit more. I would have to look at my data logs later. I can't stab it from a dead stop cause of traction, so my flash stall rpm might not be accurate. I know it's between 5200 and 5400 though.

The cast 67 is done at 78-80lbs/min with boost in the high 20's .I would expect 10.0 power with boost at 25-27psi. I doubt the compressor can keep up with the demand of the engine when the rpm gets up over 5700. The wastegate will be almost closed to make the power so all the energy can be used to drive the turbine. You have a very similar combo to what I ran last spring and it used 80lbs/min@ 25psi with a 70gtq. Race ported GN1 heads. I ran a faster ramp cam than yours. The ex valve closing close to tdc, a few degrees after at .050". I ran 1.65 ratio on both to get back the intensity particularly on the intake lobe. Check you flash stall on a 2-3 short shift and see where it lands when it's in 3rd. You won't be able to load it hard enough on the street in first to get that info.

 

[czimpel]

Sorry to jump in on the thread, but still trying to learn.

What is flash stall?