Turbo Specs

[phantom505]

From Garrett's site:

A/R
A/R describes a geometric property of all compressor and turbine housings. Increasing compressor A/R optimizes the performance for low boost applications. Changing turbine A/R has many effects. By going to a larger turbine A/R, the turbo comes up on boost at a higher engine speed, the flow capacity of the turbine is increased and less flow is wastegated, there is less engine backpressure, and engine volumetric efficiency is increased resulting in more overall power.



So I would say no, it's fine. Am I not getting enough power for you?

[Doug]

Is you compressor a/r 1 or your turbine a/r 1?

I don't care how much power you make.

[Germ]

im not saying your not getting enough hp, but a 1 a/r is relitively big for a 3.4 liter v6.

what is your compressor wheel trim spec?

most turbo calculators and guru's i have spoken to have said that a .57 trim, and .60'ish MAYBE .70ish for the turbine and compressor housings would match up really well and provide no turbo lag, or noticeable lag so to speak.

have you made it to the track phantom? if so, what kinda times do you have?

[Doug]

1.0 turbine a/r would be good.














on a RX-7

[phantom505]

Another teenage turbo expert with a LD9.

Allow me to get out of your way, SIR.

I apologize for speaking up SIR. I mean nothing by it, SIR.

I know that you have vast experience with the LA1, turbos, and engine building, I know the people that built the kit aren't as smart as you despite the fact they spent 6 months building it, so despite their best efforts I'm sure you could have done better, SIR.

SIR, may I ask what you would have done instead, SIR?

[phantom505]

Germ, call HPP if you want to know all the specs. They are busy this week so good luck getting through. I have decided that I'm not going to divulge such information for multiple reasons, one being I don't take kindly to punks (not you, but I think you can take a guess).

Oh, another little note for his Kingship Doug, you can't buy this turbo. It's a custom design.

The smart ass bitches on this site have really begun to **** me off. I know most people aren't, but I'm sick of people trying to pick apart this kit. It's the only one, and an awesome one at that. I don't see anyone else doing better. Everyone that has claimed to do this has disappeared. I haven't seen anyone else pull those kinds of numbers with those kinds of torque curves yet.

No I haven't done a 1/4 mile and when I do I'm not 100% sure I'll even let anyone know that I'm going or what speed/times I pulled. If I do it's simply because the people that have helped me get this far ask, namely HP Performance and Domestic Performance asked me to. I think they deserve some credit. I'll have an entirely different tranny anyhow.

I noticed that some people here have serious envy issues. Time for some to grow up.

[homegrown]

my roomate and I made them 2 summers ago. We aren't making anymore, mostly cause of time, but also I spent alot on those. They are 304 stainless steel, and the merge collectors where $250 a pop (we had a hard time making dump collectors so we just bought merge ones), plus the cnc time to make the 3/8" D flanges and 5/8" turbo flange. I would say you are looking at $1000 worth of materials and tack on another $200 for the jethot. you are much better off getting the turbo kit from HPP they weren't an option when I built my turbo setup!!!

Originally posted by FORTEEN3GT
again.....who make your headers?? can you make more? how much??

this of course is the biggest obstacle in a custom turbo set up.....a downpipe can always be fabricated easily......as for turbo's....those are just bolt on's and the intakes are easy also.

thanks for your input!

[phantom505]

Originally posted by homegrown
my roomate and I made them 2 summers ago. We aren't making anymore, mostly cause of time, but also I spent alot on those. They are 304 stainless steel, and the merge collectors where $250 a pop (we had a hard time making dump collectors so we just bought merge ones), plus the cnc time to make the 3/8" D flanges and 5/8" turbo flange. I would say you are looking at $1000 worth of materials and tack on another $200 for the jethot. you are much better off getting the turbo kit from HPP they weren't an option when I built my turbo setup!!!

I was working on it... it just took a while.

Did you have an IC on that? I see you say you're in the 12's. What boost did you end up with?

[homegrown]

Originally posted by phantom505
I was working on it... it just took a while.

Did you have an IC on that? I see you say you're in the 12's. What boost did you end up with?

ahhh....i am pulling that number out of my butt right now. i am shooting for 12's, but we'll let the dyno speak first in April when the upgraded engine is back in the car.....then track. yes, i have an intercooler from spearco, flows 700-800 cfm, it looks tight sitting in the front opening of the fascia. i would speculate it would take 15 lbs to hit 12 seconds.

[phantom505]

With the tranny I'm having built was shooting for 12 psi. A preload slip, 3.69 gears, and some other goodies ought to help a bunch.

Plus at 12 psi with my horribly high A/R if you believe Doug's BS, alcohol kit... I think it should be reachable. The UD pulley and the UIM, LIM, and TB should help a little, if for nothing else KR.

By the way, A/R's vary widely with the size of the turbo. You can have a tiny wheel and a big A/R and be better off than a larger turbo and a small A/R, but I know everyone knew that already so I didn't mention it.

[Doug]

Originally posted by phantom505
Another teenage turbo expert with a LD9.

Allow me to get out of your way, SIR.

I apologize for speaking up SIR. I mean nothing by it, SIR.

I know that you have vast experience with the LA1, turbos, and engine building, I know the people that built the kit aren't as smart as you despite the fact they spent 6 months building it, so despite their best efforts I'm sure you could have done better, SIR.

SIR, may I ask what you would have done instead, SIR?

unlike you I built my turbo kit. I did all the welding and fabricating. I didn't have some shop do it.

I'm still waiting to here your exact turbo specs. Surely you can tell me that. Almost any turbo can be custom made. So yeah I could buy it.

And if you were smart. (Like I wasn't) YOu would put that money into a car worth. Life begins at 20 psi

[phantom505]

Originally posted by Doug
unlike you I built my turbo kit. I did all the welding and fabricating. I didn't have some shop do it.

I'm still waiting to here your exact turbo specs. Surely you can tell me that. Almost any turbo can be custom made. So yeah I could buy it.

Once again, open your mouth and you don't know what I did or did not do. You don't know what I do or do not know.

It's up to HPP to decide wether or not they want the specs of their turbo on the web. As of right now they don't want me to. That's called "proprietary", and I'm honoring that. Read my post and I think you'll see that's more or less what I said in addtion to not giving into punks like you.

So you have the skill to weld some pipe together, want a medal or a chest to pin it on?

Do you have dyno's or 1/4's? I haven't seen anything listed.

[phantom505]

And for your smart ass comment about the GA not being worth enough... you don't even know the potential of the 3400. Nobody does, some a have clue others don't. You would be included in the clueless. I've spoken to more hardcore engine builders, transmission builders, forced induction experts than you can shake a stick at.

And you know what they say... the 60*V6 along with the 4.6L V8 in the Caddy's are their 2 most favorite GM engines, and on a larger scale 2 of the best anywhere.

[Doug]

Wow you're so old and wise. My age has nothing to do with anything. Have fun with 260 fwhp. When you ready to come off the porch and play with the big dogs get in touch.


btw respectable turbo kit producers don't hide their turbo specs.

[phantom505]

Really? Respectable turbo kit producers don't hide their turbo specs?

I guess that leaves you out too? No dyno, no 1/4's. I think you are simply full of ****. No telling what turbo you used. I'm sure they'll tell anyone that they believe should know, namely customers. That's because they are business people. Something you might understand one day.

By the way, there is no age requirement on being a punk. It's a behavioral trait.

And another thing... that's just the beginning. Just shows that you don't know crap except to attempt to talk ****.

I'm the big dog here, you're the hapless one.

[Doug]

Originally posted by phantom505
No telling what turbo you used.

Look at page 3

My car was turbocharged when you were still playing with cold air intake nd newplug wires.

I'll scan my dyno plots tommorow.

Theres' countless pics of my set-up on this site. PLus members have seen it in person.

And almost every turbo-kit company gives out there specs. Look at sound-performance or even greddy. It not the turbo that makes the kit, its the how its put together. IE downpipe, headers, exhaust..etc. You would be stupid to buy a kit and not know what the specs of the turbo you were buying.

Don't worry you will realize one day that you wasted a ton of money for such little performance. I'm glad I got out before it was too bad.

[phantom505]

You weren't kidding about life starting at 20 psi. From what I can calculate it will take you 20 psi just to put down 275 HP at the wheels.

At 10 psi I'll be over that number. I would be at about 387 wHP at 20 psi, if I keep stock displacement.

And you're going to pull the same weight, take 50 lbs.

[Doug]

Originally posted by phantom505
You weren't kidding about life starting at 20 psi. From what I can calculate it will take you 20 psi just to put down 275 HP at the wheels.

At 10 psi I'll be over that number. I would be at about 387 wHP at 20 psi, if I keep stock displacement.

Are you kidding me. My car isn't turbo anymore. On my new project car 20 psi with get me 450 RWhp.

[phantom505]

Is this the same LD9? Or do you have a different car/engine?

BTW, any dofus can go buy a Mustang for dirt cheap if that's what they wanted to do.

I WANT to build up the 60*V6... or do you not understand.

I'm NEVER going ****. PERIOD. I have more respect for myself than that.

[Doug]

Mk3 Supra turbo