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

Latest Rotaryshack 13Bturbo swap 80rx7

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Old 02-21-04, 03:47 PM
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Latest Rotaryshack 13Bturbo swap 80rx7


THE SPECS ARE AS FOLLOWS...
91 j-spec motor
45 weber carb
rotaryshack turbo hat
mallory #4309 FPR
MSD fuel pump
new 3 row radiator with electric fan
21/2 downpipe with full exhaust
light steel flywheel
racing Beat clutch
a special thanks goes out to the owner of the car and his friend Chris for helping out with parts hunting!!
The owner originally came to Rotaryshack for a stock 12A motor swap but after a test drive in one of the "low budget" turbo swap cars he had to have one!!!
this car was built on a tight budget since the owner was a college student ,,, so if your looking for speed on a budget ,this IS the way to go!!!

p.s. you have to see this car in person to appreciate how clean this rx7 is!!!


Last edited by 680RWHP12A; 02-21-04 at 04:13 PM.
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Old 02-21-04, 03:54 PM
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Looks nice, got any more shots of then engine bay?
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Old 02-21-04, 03:56 PM
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RX for fun

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When I was at his shop several nights ago, that car was 90% done. Hopefuly, when I go back next week, I CAN TEST DRIVE IT!!!!!!!
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Old 02-21-04, 04:18 PM
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Looks great man! Mine will be at the running point soon!!

But watch out, i got my avatar and signature deleted cause i was advertizing you, so they may delete all your stuff too!! I donno whats goin on...
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Old 02-21-04, 04:22 PM
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looks realy nice. what was the total cost of the "low cost" set up?
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Old 02-21-04, 05:07 PM
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Originally posted by ioTus
Looks great man! Mine will be at the running point soon!!

But watch out, i got my avatar and signature deleted cause i was advertizing you, so they may delete all your stuff too!! I donno whats goin on...
Thats lame because all kinds of people list brands in their sigs... Racing Beat, GReddy, Blitz, etc

~T.J.
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Old 02-21-04, 05:20 PM
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Poor Robert is probably still "paying the price" for being associated with the heathen Jeff...are the float bowls of a Weber different so they don't need to be pressurized or is there something esle going on I'm missing in the pics?
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Old 02-21-04, 05:37 PM
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Originally posted by mar3
Poor Robert is probably still "paying the price" for being associated with the heathen Jeff...are the float bowls of a Weber different so they don't need to be pressurized or is there something esle going on I'm missing in the pics?

no im pretty much free and clear of that whole mess, but thanks for asking!!

as far as the carb being pressurized, it is through the bowl vent , the hole is incorperated into the hat design
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Old 02-21-04, 06:58 PM
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Well, I'm sure physically and financially, but I was talking about the old collective conscious here in the Forum after that infamous thread from aways back...

ps. we're trying your "tension bolt stretch" trick Monday on Furious Rex to try to stop the dowel pin leak...everyone cross their fingers for us...
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Old 02-21-04, 09:02 PM
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[i]

ps. we're trying your "tension bolt stretch" trick Monday on Furious Rex to try to stop the dowel pin leak...everyone cross their fingers for us... [/B]

it will help for sure ,,,, trust me
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Old 02-21-04, 10:38 PM
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how much did it cost by the way?
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Old 02-21-04, 10:57 PM
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I still don't understand why someone would take a fuel injected turbo engine and put a carb on it. It's going backwards if you ask me, or is it just the price?
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Old 02-21-04, 11:02 PM
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Originally posted by RotaryRevn
I still don't understand why someone would take a fuel injected turbo engine and put a carb on it. It's going backwards if you ask me, or is it just the price?
why dont you read up on blowthrough setups
that car is making alot more power than a stock tII
-greg
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Old 02-21-04, 11:05 PM
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take a stock tii setup, drop a blowthrough carb on it, you get up to 100 more hp.

STOCK SETUP.

so now, what was your question again?
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Old 02-21-04, 11:13 PM
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ouch.
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Old 02-21-04, 11:16 PM
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love the braaaap

 
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I see no discussion on the blowthrough. Its simple. It makes more power under same conditions (more efficient), easyer to tune (no need for laptop), and is cheaper (fuel injection systems go for up to $3000. Carb can be had for under $1000).
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Old 02-21-04, 11:34 PM
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Originally posted by ioTus
take a stock tii setup, drop a blowthrough carb on it, you get up to 100 more hp.

STOCK SETUP.

so now, what was your question again?
I'm never mentioned stock setup. I have stand alone microtech with bigger injectors. I only paid 650 for my LTX not 3,000, cheaper than carb.

Don't know how much the rotary shack draw through system is but I was told of a similar system I belive by mazdadragracing.com or mazdaracing.com or something like that and it was two or three grand (this is what I was told at sevenstock)

Last edited by RotaryRevn; 02-21-04 at 11:51 PM.
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Old 02-22-04, 12:13 AM
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is that car located in San Franciso? and is Rotary Shack located over there up north?
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Old 02-22-04, 12:34 AM
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Rotary Shack is in Chatsworth (San Fernando Valley).
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Old 02-22-04, 09:30 AM
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So it makes 100 more HP than a stock T2 without a intercooler and what looks to be a stock turbo?? Something isn't adding up. What am I missing?
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Old 02-22-04, 02:42 PM
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but why accomplish a blow through setup and be only within a limited amount of power that could only go so far?? 350 hp max perhaps?

and wouldn't fuel injection be more "efficient"? please further explain
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Old 02-22-04, 04:08 PM
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awesome, how much did it end up costing the guy? Did you keep the same tranny?

<l><l>
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Old 02-22-04, 04:22 PM
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RX for fun

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its a stock tranny. look at the picture of interior.
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Old 02-22-04, 04:39 PM
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has he got a Limited slip rear end or an electric locker or something to put the power to the ground?
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Old 02-22-04, 10:08 PM
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Originally posted by setzep
So it makes 100 more HP than a stock T2 without a intercooler and what looks to be a stock turbo?? Something isn't adding up. What am I missing?
That's what I'd like to know too.
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