Single Turbo RX-7's Questions about all aspects of single turbo setups.

A few pics of my GT42 install

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Old 04-18-05, 05:12 PM
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A few pics of my GT42 install

Here are a few new shots of my car with the GT42 going in. The turbo manifold is done along with moving the intercooler to a front mount and redoing the end tanks. I finally got the manual rack in and the Aerospace drag brakes are on all 4 corners. The intake manifold is next and will be pretty damn sick. It's going to look like our Supra manifold that all the highest hp and fastest Supra's in the country use. It'll be connected to a GroundZero lower mani. I've also got the GroundZero oil pan which is a really cool piece that's going on in the next couple of days.

The TH350 is all mounted in place with a starter and driveshaft being the only 2 pieces left for the drivetrain.

We're making a new wiring harness next week and if all goes well hope to have the car running within a month.

The turbo is a 42-76 and will have our surge delete mod that we're doing for all the Supra's. If you haven't seen it then you need to. It looks really trick! I'll post some pics of that later on.
Attached Thumbnails A few pics of my GT42 install-new_combo_1.jpg   A few pics of my GT42 install-new_combo_2.jpg   A few pics of my GT42 install-new_combo_3.jpg   A few pics of my GT42 install-new_combo_4.jpg   A few pics of my GT42 install-new_combo_5.jpg  


Last edited by silvr94r2; 04-18-05 at 05:34 PM.
Old 04-18-05, 05:19 PM
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I'll blow it up real good

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Pic links don't work for some reason
Old 04-18-05, 05:19 PM
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Thanks for the pix. They look great, but you can't click on them to enlarge. Is there any way that you can change that??

Zach
Old 04-18-05, 05:22 PM
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Yeah i'm doing that right now....my computer locked up and screwed it up.
Old 04-18-05, 05:29 PM
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why not GT42R
Old 04-18-05, 05:38 PM
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Originally Posted by boostgasm
why not GT42R
We don't use the dual BB turbos. Just haven't had any of the results most people claim with them. I'm not saying they don't work.....just not worth the money IMO. Also, for what it'll be used for i don't think it would make a bit of difference.
Old 04-18-05, 06:55 PM
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Nice man, anti surge delete should help with spool no?
Old 04-18-05, 07:43 PM
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Originally Posted by ghostrx7
Nice man, anti surge delete should help with spool no?
Yeah it's helped by about 500 rpm on the Supra's and it also makes more power.
Old 04-18-05, 09:13 PM
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your car won't ever run............
Old 04-18-05, 10:32 PM
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pics of the GM tranny plz

looks BAD ***!

Last edited by kabooski; 04-18-05 at 10:57 PM.
Old 04-18-05, 10:55 PM
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Originally Posted by kabooski
pics of the trannt plz

looks BAD ***!

I'm not sure what your asking for.....and thanks
Old 04-18-05, 10:59 PM
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Originally Posted by LUPE
your car won't ever run............
Do i know you? Do you know me is a better question? It will run i can promise you that! Care to make a wager on it running w/ a date to shoot for?

This will be the setup that the car will run with.....no more changes until it runs and drives and busts down an 8 sec. 1/4.
Old 04-18-05, 11:02 PM
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wow

wow thats the more expensive version of my soon to be setup.

how much boost do you plan on running?any pics of the manifold?
Old 04-18-05, 11:13 PM
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Kabooski: i'll take some tonight when i get down to the shop. Depends on if it's on the lift or not as well. If not tonight then for sure in the next couple of days. You thinking about going auto?
Old 04-18-05, 11:23 PM
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Originally Posted by T04Eneedy
wow thats the more expensive version of my soon to be setup.

how much boost do you plan on running?any pics of the manifold?
It'll be somewhere in the 30+psi range. I have a couple pics of the manifold but they didn't come out very good. I'll see about getting some new ones. The manifold has 2" primaries, fully divided, equal length at around 15" and within a 1/16" inch of each other, dual 1" wastegate tubes into a 44mm Tial wg. which is also within 1/16" of each other in length. It's thick mild steel and tig welded with SS rod. It shouldn't have any problems holding the monster up.

I hope you were asking about the turbo manifold
Old 04-19-05, 09:35 AM
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very nice... questions on the turbo, what size exhaust piping do you have to run with that turbo? and what size is the com wheel?
Old 04-19-05, 09:39 AM
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Originally Posted by silvr94r2
Do i know you? Do you know me is a better question? It will run i can promise you that! Care to make a wager on it running w/ a date to shoot for?

This will be the setup that the car will run with.....no more changes until it runs and drives and busts down an 8 sec. 1/4.

Your going to have a hard time running an 8 second 1/4. The turbo is good for about 650rw. You'll probably need some spray on top of the GT42 to run 8's

Still though, it looks great and I'd love to see it lay down some 8's

Stephen
Old 04-19-05, 10:23 AM
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Originally Posted by 680RWHP12A
very nice... questions on the turbo, what size exhaust piping do you have to run with that turbo? and what size is the com wheel?
Hey man, I tried to PM you but it wouldnt let me so I went to your website and used the email address thats listed there.

BTW - The standard GT42 from Garrett comes with a 5" dp outlet and most places modify it to work with a 4" dp.
Old 04-19-05, 10:24 AM
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please do post photos of your intake manifold and info on your surge-delete modification. i'm very interested.
Old 04-19-05, 11:05 AM
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Great looking pictures!! I remember you living in TX though. When did you move to Vegas?? Best of luck in hitting the 8 second barrier. I really hope that you can do it!

Zach
Old 04-19-05, 11:51 AM
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Old 04-19-05, 03:22 PM
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Originally Posted by SPOautos
Your going to have a hard time running an 8 second 1/4. The turbo is good for about 650rw. You'll probably need some spray on top of the GT42 to run 8's

Still though, it looks great and I'd love to see it lay down some 8's

Stephen
Are you sure that info is correct. Ive seen that turbo do well over 650 and it didn't even begin to work. Granted it wasn't on a rotary but still the turbo is capable of a lot more than 650hp.
Old 04-19-05, 03:29 PM
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rotary makes approx 20% less than a piston engine with the same airflow. Its marketed to support up to 1000hp, by the time you convert that to rotary power then factor in drive train losses it comes out to about 680rwhp maxed out. From what I've seen this number seems to correspond pretty well to real word. Mid 600's seems to be a good number to count on, the reason I said more like 650rw for his is due to the extra drivetrain loss form the automatic tranny.

Last edited by SPOautos; 04-19-05 at 03:35 PM.
Old 04-19-05, 03:41 PM
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How much percentage does the th350 lose through the drivetrain? Just wondering, because I know the th400 is a bastard in that department.
Old 04-19-05, 03:52 PM
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SPOautos: We've layed down 1035rwhp on boost alone with this turbo and it wasn't maxed out.....this was on a Supra. We've got videos of that run if you want to see it. I'm thinking around mid 600's to the wheels through the auto without spray so your not too far off. I am going to spray it though so we'll have to see. The Virtual Works personal car ran a 8.89 with 870rwhp on a 74gts and it weighs 3600lbs. My car will weigh 1000lbs. less but have less hp so it should be pretty close. I also have the TH350 with a bunch lightened on rotating mass to free up drivetrain loss. The converter i'm using is going to be the trick just like it was on the VW car.

Nobody believed we were running the times we did with the power it put down. It's all in the setup

I'm running a 4 1/2 SS exhaust from turbo back. The outlet is 5" but we just taper it down to 4.5 The inlet is 5" and will have a custom cold air pipe made. The compressor wheel is 102mm if i'm not mistaken.....i'll double check. That's the number that 1st popped in my head.


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