Kurgan

the title says it all... well mostly. I need to find a competent fabricator that can make a single turbo SS manifold for my 20b. I am going to be using a garret gt42 with undertermined wastegate... the motor is in my 90 T2 with K2RD 20b FC motor mounts.

Would you need the turbo in your hands to do such a thing? Does anyone have a 20b FC nearby that they could test fit on... I may be willing to travel with my car a minimal amount of miles for test fitting.

Please let me know if you can do this, or if you know someone that can. I'm not looking to purchase one immediately, just trying to get my ducks in a row for the near future.

Kaotic Dan

There's a company here in New Mexico that can do the job quite well. They will need the car with the motor fitted and the turbo so they can assure proper fitment. The company is called HP Performance, you might have heard of them if you have been following mustang performance, as they make high quality kits for 5.0l and 4.6l stangs. I can attest for thier work personnaly, and if you want thier number, shoot me a PM

RX-Heven

iTrader: (1)

If you are willing to wait about 3-4 months, I can have two made. He will have my car to make sure everything fits. At this point, I will probably be using the same turbo, but my engine is lowered almost 1-1/2" and moved back almost 4". Although I do have the k2rd mounts still to locate the engine in the same place as yours so he could fab something up for you also. Wastegate?

What hp/ torque are you looking for and at what rpm do you expect spool up? I think our engines are very similiar i.e. porting, hp goals etc. Your car will be primarily a drag car right? Mine will be for road racing and my only concern is that turbo might be too big and to slow to spool, but I am only looking for 14-16 lbs. boost. I'll still probably end up going through 3 or 4 and $10,000 before I find what I want and need.

Kurgan

Thanks for the replies guys. AZ at this point is too far away for me to bring my car... I may hit you up at some point, but not at this point in time.

My hp goals are somewhere between 600-700 rwhp. I honestly don't know what i"m building here... I guess you could consider it a drag car that will be driven on the streets 90% of the time.

I will not be autocrossing this car, i have plans to build a decent RX3 in the future for twisties, but this car I would be happy if it handled... hmmm, maybe similar to an FD, but I'm not quite sure that's possible with the setup I may be running... but twisites are not high priority on this vehicle... stock FC handling would be acceptable, but not preferred.

I'm not quite sure where boost will build as I am still in the turbo analysis phase, but from what I can tell, and after talking to Hyperex extensively (chime in here buddy if you're reading), I'm fairly positive that there is no other choice for a 20B to make more than 500hp than going with a turbo similar to the GT42.

Basically, I am willing to put up with some lag, or semi-late building boost (4000 rpm??) for 20psi... I'm seriously not even sure what boost level I have to run in order to make my rwhp goals... like i said, still planning. But, I am willing to sacrifice some low end for the ultimate goal of a 9 second qtr mile capable car... dunno if I will be able to pilot the thing to that trap, but if my car is mathmatically capable of doing it, I would be satisfied. I haven't ruled out the use of a small shot of nitrous for spooling the turbo when needed, but I would ABSOLUTELY prefer NOT TO USE NITROUS.

Well, there's my ramblings... too much coffee, hope that's slightly coherent... anyone have any questions, suggestions, feedbacks or flames??? Post away

Grizzly

Does it not worrie you running that much Hp on a Roller bearing?

The way i see it Roller bearing are good under set load they dont like On off all the time so i am a little cautious buying one.

If somone has run over 450rwhp on one then i'll stand corrected but i have seen peoples fail at that sort of hp.

I admit though it was on smaller GT3540's on 13b's.

Chris

Kurgan

Well, as far as I know, I'm pretty much treading new ground here with a street driven monster. From what I've seen, most ginormous turbochargers are either ballbearing or have a ballbearing option. The turbonetics thumper series, the garret GT series, all of the turbonetics offshoots... they are all available with ballbearings.

When you're talking about this much HP, it's hard to find any reliable information... I'm sure it's out there, but the race teams and drag racers usually covet such information because it has cost them tons of money to gain the knowledge they've accumulated and they see no reason to share it for free.

That being said, I personally have not even began to worry that a garret dbb turbocharger would not hold up to the HP requirements I'm seeking. I've heard nothing but raves and glory spoken about that series of turbochargers... I've seen the gt42 listed as "an 800 hp turbo" which does not mean a hell of a lot... still trying to nail down a compressor map for this thing and see exactly what I'm looking at.

To sum it up, no, I'm not worried.

Kurgan

does anyone have a bigger version of this chart that you can actually read? Or maybe one specifically for the GT42?

Kurgan

Wouldn't you know it, I found the pics I thought I had bookmared... I'm just gonna link them here for future references.

Garret GT42 Compressor Map:


Garret GT42 Turbine Map:


This is where I found the maps... lots of good ones on there.

Grizzly

It does look a good toy.