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Help Me Choose A Turbo

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Old 06-24-05, 12:58 AM
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1993 Mazda RX7 R1

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Help Me Choose A Turbo

I dont want anyone flaming me as im interested in the opinions of others. i have a 87 TII with a JSpec S5 TII engine. im looking to get 500rwhp with a large streetport. but i wanna run this kit for a year or two without the port. i was wondering what turbo everyone would choose to hit 500rwhp on a large streetport. Im gonna be running the Haltech E6X. I wanna buy from Street Machine Performance as i had good history with them and i narrowed it down to a few from this selection. please tell me which you would choose and why. thanks alot for all your help guys.

http://www.speedmachineperformance.com/garrett?b=1
Old 06-24-05, 06:23 AM
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IAN
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Nice dude.

If your aiming that High looks like I will not be the only high HP 13B FC around here anymore.

Good luck in your build.
Old 06-24-05, 11:13 AM
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T-72, TA45, T78, or a GT42R are all excellent choices, but you're going to have to push some pretty serious boost (20+ psi) to make 500 rwhp. If you have to buy one of the turbos listed on that page to make 500 rwhp, I would go with one of the GT42 variants. Though you (and your wallet) might be more than happy with a GT35R making 450 rwhp.
Old 06-24-05, 11:47 AM
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damn! I could't emagine spending 1900 bucks on a turbo! Good lord!
Old 06-24-05, 02:28 PM
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thanks ian, dont ask me why but as long as iv known rotaries i was under the impression i had to do a port and rebuild to put on a kit. thats why i wasnt wild about it. so now im gonna make my own kit and run it for a year before doing the large streetport and rebuild.
Old 06-24-05, 04:57 PM
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Originally Posted by the_glass_man
T-72, TA45, T78, or a GT42R are all excellent choices, but you're going to have to push some pretty serious boost (20+ psi) to make 500 rwhp. If you have to buy one of the turbos listed on that page to make 500 rwhp, I would go with one of the GT42 variants. Though you (and your wallet) might be more than happy with a GT35R making 450 rwhp.

i dont understand why the GT35R is $1799 and the GT42 is $1049 when the 42 can hold ALOT more hp, does watercooled make that much of a difference?
Old 06-24-05, 05:24 PM
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GT35 R is a ballbearign turbo , while the GT42 is a non ballbearing turbo, If you compare a GT35R to a GT42R there much closer in price.
Old 06-24-05, 06:11 PM
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i didnt think that there would be such difference in price for a ball bearing. ($700+)
Old 06-24-05, 07:00 PM
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Oh yeah. The price difference between the two is unreal! But then again the difference in spool time is really nice too.

Zach
Old 06-29-05, 02:47 PM
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Hmmm..... www.cheapturbo.com has GT35R's for $1300.
Old 06-29-05, 11:48 PM
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GT42R all the way, lag is not too bad, on my stock ported engine i see full boost at 4500rpm.
Old 06-30-05, 09:37 AM
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I would not suggest getting a e6x. I have one and it gave us problems for 6 months. Alot of forum members have had to ship their back to AUS to get fixed. Get a used e6k and most of the time it will come with the harness for plug and play. Don't make it hard on yourself trust me. And for a turbo I would suggest something from Precision turbo. A few forum members have hit 500 with 2nd gen motors with thier pT67 and pT74. Their is a 10 day wait on these now. Ask me how I know. Oh and if no one told you, on a dual ball bearing rebuilds are not cheap and easy. You just buy another dual ball bearing turbo. Something to consider
Old 06-30-05, 04:44 PM
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thanks alot Buk, what management do u run now? or did u just get it fixed..
Old 06-30-05, 04:49 PM
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also which of the 67 and 74 would u go with, alot of different trims??? they look nice and a little cheaper then garrett
Old 06-30-05, 05:09 PM
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Pt turbo's arent bad, I have setup a few here. I prefer the Garrett 42R over the two(67-74) listed. Just seems to hit better. As far as the rebuilding a GT BB turbo I have repaired them numerous times it's not that bad. Just depends on how badly you damage it.
Old 07-01-05, 01:05 AM
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I'll be dynoing a 67 next Friday if you can wait. Carl
Old 07-01-05, 02:54 AM
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masterpower t70

http://cgi.ebay.com/ebaymotors/ws/eB...spagename=WDVW
Old 07-01-05, 03:09 PM
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heh, i run that Masterpower T70, doing in the high 400s right now, (480rwhp), lookin in excess of 500hp once properly running and in the higher boost levels, 20+
Old 07-01-05, 03:23 PM
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Rx7 Store Has Cheap Stage Turbos
Old 07-02-05, 12:01 AM
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Originally Posted by Carl Byck
I'll be dynoing a 67 next Friday if you can wait. Carl

il be waiting
Old 07-02-05, 12:04 AM
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im interested in the GT35R what manifold would u run with that?
Old 07-02-05, 12:08 AM
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whats everyone think about this? the turbo and fmic any good?



http://store.yahoo.com/cheapturbo/500whppackage.html
Old 07-02-05, 12:19 AM
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didn't mention a manifold, downpipe or intercooler pipes.

there are some pretty decent kits out there for ~3k-3500
Old 07-02-05, 12:28 PM
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any links to them?
Old 07-02-05, 01:44 PM
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anywhere..
gotham has the gr63 or 67 (i think) kit
aspec has the 35 or 40r kit
rx7store has a bunch of stuff..

i got a really good deal on a new 35/40, then got a discontinued blitz manifold for $500, and found a used hks standard wastegate, oil feed and return lines, and downpipe for a few hundred bucks. my whole setup cost me around $2100.. i might have to have the dp modded a bit, but even with that and welding the w/g flange on, it MIGHT come out to 22-2300ish.

if you'e willing to get some parts used, you'll save a bundle. my turbo and manifold are new, but what's the difference between a new and used oil line...just as long as it doesn't leak. it's not really a "wearable" item.

the manifold i got--to answer your question, was from a blitz fc turbo kit that never came to pass. brian galloway (japan2la) had a few of them and i got the last one. he might be able to order you one though. it just might be a little more expensive because it's gotta get shipped in from japan. it's got some wierd 3 bolt wastegate flange on it and it IS for an fc.. i figured if it doesn't fit correctly, i'd cut the pipes and tilt it over--no biggie.

you can get a lot of power reliably if you know WHERE to compromise.

i think a 35r is a little on the small side for 500whp, but lots of guys make 400ish with low boost levels on pump gas. maybe a 40r or t61 might be a little more along the lines you're looking for, but i don't know how much room you want to grow.

Last edited by GUITARJUNKIE28; 07-02-05 at 01:46 PM. Reason: typo


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