1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

you guys asked for it, here it is....12A turbo intercooled

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Old 11-11-03, 10:19 PM
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you guys asked for it, here it is....12A turbo intercooled

this car fresh out of ROTARYSHACK
the car is a 79 rx7 , with SE suspension
12A streetport with n/a rotors...
12A turbo /manifold upgraded to 60mm comp, t4 hsg. , stage 5 exhaust wheel... with a 3" v-band downpipe
50 mm. weber turbo prepped , mallory #4309 regulator, msd fuel pump
locked distributor, 2 msd 6al units . msd wires, B10EG spark plugs
85 tranny , stock flywheel , race clutch
spearco intercooler , 2.25" i/c piping
this car comes on boost by 2,500 rpm's and pulls all the way to redline!!!

we will have video of this car in action soon

the car is now going to the bodyshop for the front spoiler, body and paint
p.s. the intercooler did cool the intake air temp alot!!

its boosting 8 psi right now on 91 octane fuel...but we will be adding a boost controller for track or street racing
i wonder how it will run on 20 psi on race gas!!
p.s.s the outside is as stock looking as possible = sleeper


Last edited by 680RWHP12A; 11-11-03 at 10:43 PM.
Old 11-11-03, 10:26 PM
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I just made a mess all over myself...
That intercooler is sick...

Zachstylez
Old 11-11-03, 10:32 PM
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You do beautiful work... Enough Said.
Old 11-11-03, 10:46 PM
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Nice, can't wait to see the video of it in action! Lets here that thing spool!!
Old 11-11-03, 10:52 PM
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robert, you are offically the man...

i will be contacting you when i do my turbo swap
Old 11-11-03, 11:26 PM
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I can has a Hemi? Yes...

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What kind of power for street use?
Old 11-12-03, 12:46 AM
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at last 290 h/p...there is no dyno sheets yett.....

the way it pulls its gotta go at least that fast!!///make at least that much h/p!!

Last edited by 680RWHP12A; 11-12-03 at 12:55 AM.
Old 11-12-03, 01:12 AM
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290 at 8psi?
Old 11-12-03, 01:14 AM
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oh yea, almost forgot..
Old 11-12-03, 01:28 AM
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Nice Work!!
just one question, how much approx did all that cost out of curiosity?
Old 11-12-03, 01:37 AM
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Wow... simply amazing.
Old 11-12-03, 08:02 AM
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Originally posted by Gatorgunner [/i]
[B]Nice Work!!
just one question, how much approx did all that cost out of curiosity?
Old 11-12-03, 10:12 AM
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Looks dam good Robert, call ya soon......
Old 11-12-03, 10:28 AM
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hmmm, it looks soooo clean. It really makes me want to jump into my garage and start working on my own project...
Plans are a streetported 12A for me, if possible with a IC'ed turbo, but that'll depend on what parts I can find...
Any idea how a S4 (FC) turbo could work on a 12A? HP expectations?
Anyway, nice job, and keep posting pics of such projects, even if I live in Europe (making it impossible to buy from you guys, unless I pay huge import taxes) I still can learn a lot from those things...
Old 11-12-03, 12:19 PM
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Beautiful, I want that intercooler too!!

How much would you charge if I sent you a 40IDF to be turbo prepped for high boost?
Old 11-12-03, 02:44 PM
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umm....

It really makes me want to jump into my garage and start working on my own project...
me too! too bad my budget is 50 dollars a week

im working on a similar 12A turbo project, the main difference between mine and roberts is that he is pretty much done and I have pretty much just started

robert, did you do anything to the engine internals besides porting - hardened stationary gears,etc. ?
Old 11-12-03, 03:22 PM
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Originally posted by The_7
umm....


me too! too bad my budget is 50 dollars a week

im working on a similar 12A turbo project, the main difference between mine and roberts is that he is pretty much done and I have pretty much just started

robert, did you do anything to the engine internals besides porting - hardened stationary gears,etc. ?
the engine internals are stock except for the ROTARYSHACK apex seals and race oil pump
and the huge streetport!
Old 11-12-03, 03:45 PM
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Originally posted by 680RWHP12A
except for the ROTARYSHACK apex seals
Oooooo ..... the "super secret UPPER CASE" ingredient.
Old 11-12-03, 04:02 PM
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' if possible with a IC'ed turbo'

But you have a perfectly good turbo? Have you decided against it already?
Old 11-12-03, 05:58 PM
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Originally posted by inittab
Oooooo ..... the "super secret UPPER CASE" ingredient.
ROFL, I think you just put most peoples thoguhts into words right there
Old 11-12-03, 06:17 PM
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loving the blue grey block color
Old 11-12-03, 06:23 PM
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Originally posted by Pedestrian X
ROFL, I think you just put most peoples thoguhts into words right there
...Mmmm-Hmmm.

Ummm...and the price is.....













?
Old 11-12-03, 10:17 PM
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ya im almost done with my 12a turbo intercooled. basically the same mods you have except im running a holley and racing beat manifold. im just having trouble finding the fuel pump and regulator im going to need. suggestions?
Old 11-13-03, 12:21 AM
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Originally posted by hiboost7
ya im almost done with my 12a turbo intercooled. basically the same mods you have except im running a holley and racing beat manifold. im just having trouble finding the fuel pump and regulator im going to need. suggestions?

sugestions,..,.....calllll me.!!!!!!!!!!!
Old 11-13-03, 03:57 AM
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Originally posted by bill Shurvinton
' if possible with a IC'ed turbo'

But you have a perfectly good turbo? Have you decided against it already?
No, I haven't... I'm looking through options, and will probable go this route: Street port NA (with current Mikuni and RB), to run in the engine. Then going Elford for a year, and spending the summer working on my other RX-7, installing a custom intercooled turbo setup in that one. Once I'm done (the summer will be long gone too ) I'll transplant the turbo setup, and use the IC'ed blow through in the Mariah, and the Elford in the 1984 (which will then be for sale). Follow me? No? Don't worry, I useally change plans every second week
Anyway, the engine you sent me is now opened up for a SP rebuild, and looks very clean and good inside! I still have to measure to know for sure, but there's no visible wear of the housings, and all apex and side seals were in one piece. Although I'm not going to re-use the seals, it's good to see that none of them was boken and damaged the housing.


Quick Reply: you guys asked for it, here it is....12A turbo intercooled



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