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

ok just to upgrade seconday 850's to 1600?

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Old 11-06-05, 01:02 PM
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ok just to upgrade seconday 850's to 1600?

Doing a single turbo setup now and just wanted to know is it safe to upgrade just the secondaries to 1600 and leave the primaries at 550?
Old 11-06-05, 01:05 PM
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No

Change your prim's upto 850 and the 2nd's to your new 1600's but hope you have all the other bit's done to match the new fuel consumption intake and exhaust pipes...
Old 11-06-05, 01:29 PM
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I already have the exhaust done. have a walbro installed and running haltech. anything else you think i will need? also will the 850's fit in where the 550 used to be?
Old 11-06-05, 02:30 PM
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You don't necessarily need to install larger primaries, a lot of people run 550/1600 injectors. For the 1600s, you will need an aftermarket fuel rail, a fuel pressure regulator, and to remove emissions. Some people experience difficulty in getting a smooth overlap between the 550/1600s.
Old 11-06-05, 02:43 PM
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well i have a haltech already and steve kan will be tuning my car. and emmsions is already gone. am i missing anythin else?
Old 11-06-05, 03:48 PM
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Ya a good boost controller. BTW which single did you go with?

R.K.
Old 11-06-05, 03:49 PM
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63-1 turbonetics ball bearing planning on goin with a blitz boost controller
Old 11-06-05, 03:55 PM
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Your 850's will fit in the primary spot with some minor primary fuel rail modifications. May as well do it while the stuff is out.
Old 11-06-05, 04:10 PM
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what do i have to do to get them to fit?
Old 11-06-05, 04:49 PM
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Originally Posted by GOTBANNED?
what do i have to do to get them to fit?
You need to machine your stock primary fuel rail to accept the 850s, I have one if your intrested
Old 11-06-05, 05:07 PM
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hey jim i'm interested let me know how much you want for it.
Old 03-26-06, 10:11 AM
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how much power will 550/1600 support, <90% duty cycle
Old 03-26-06, 02:13 PM
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best! combo by far
is 850 prime and 1600 secondary's

Rotaries are thirsty mother f'ers
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