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-   -   12a CarTech drawthrough HELP!! (https://www.rx7club.com/1st-generation-specific-1979-1985-18/12a-cartech-drawthrough-help-814461/)

cds00bsmg 08-11-09 09:22 AM


Originally Posted by Bearzah (Post 9415913)
Looks like you've found the earlier turbo setup. Is it the kind which uses the stock intake and a spacer for the turbo interface? i am curious now :rolleyes: Gonna need some pics now

Any vintage CarTech setup is a find in my opinion!!

My setup is doing great... still running strong.

I've been putting some highway miles on it lately... averaging 17.5 to 19.2 MPG!!!!! Go figure, that's better gas mileage than before my turbo. BUT, as soon as I start driving a bit aggressive or go screaming up Mary's Peak I get a little over HALF that mileage :lol:

Nah, it is definitely the same as your kit. I know that other kit, (Does'nt BAE make one, or did rather.) from the pictures you posted earlier in this thread, to another forum member's car who has the same setup. It does not have all the crazy piping like the earlier models.

It was just a few days ago, but I'm almost positive there was some sort of coolant line run to the curved section where the carb. bolts onto. (This thing looked kind of rigged, with an oil feed, or drain tapped right into the POS Fram filter.)

The car is super solid, but has never even run since the gentleman who has it now has purchased it. He has never had it running even. However, he assures me it will run no problem (although the carb. is not even bolted down) yea right it runs.....

I'm not overly interested in an SA, although this car reads 60k on the odo, has a targa band, and a full roll bar installed. His price is not overly cheap either, he told me $3k for the car as is, no lower. However, the guy lives alone with about 10 cats, answers the door with his pants down and unbuttoned, is bare foot, and always insists I try his spaghetti sauce, and check out his sport compact car, and porno collection.

Needless to say, this isn't really a guy I want to hang out with. He just has some kick ass rotary stuff laying around. He also has a spare 12A laying around, as well as an 85 wide body that is ported, and has a side draft setup on it.

All in all, I just want the draw through setup. I'm pretty sure I can bribe it away from him with a bottle of Everclear and $100.....haha

Nice to see your car is doing kick ass! Have you ever considered running it on E85 or some sort of mix?

Bearzah 08-11-09 09:46 AM


Originally Posted by cds00bsmg (Post 9418345)
Nice to see your car is doing kick ass! Have you ever considered running it on E85 or some sort of mix?

E85 isn't overly available where I live... more in Salem and Portland.

I have thought of methenol injection, but, really haven't explored it lately.

cds00bsmg 08-11-09 01:06 PM


Originally Posted by Bearzah (Post 9418381)
E85 isn't overly available where I live... more in Salem and Portland.

I have thought of methenol injection, but, really haven't explored it lately.

Yea, the closest E85 to me is Pittsburgh, but I've always wanted a turbo FB GSL to scoot around in...

Bearzah 09-02-09 04:45 AM

Sooo... What are my options for electronic boost control? I'm looking at a HKS EVC IV... Can i plumb both sensing lines into pressured side of turbo housing? HKS instructions show one on pressure side of turbo before intercooler and other after throttle plates/in plenium. Ugh... Is no one else running a boost controller on a draw-through setup?
Hoping for some help here guys... Thanks

PercentSevenC 09-02-09 01:26 PM

Afraid I can't help you there. I'm all about the $5 Home Depot boost controllers. :D

I want to know how much power you're making with that kit. Any plans to take it to a dyno?

cds00bsmg 09-27-09 07:00 PM

any new info.?

Bearzah 09-28-09 06:51 PM

HKS EVC electronic boost controller installed... SOOOO COOOOLLL... low to high boost at a touch of a button.

And the BIG NEWS... I drove the car to the shop for the body work to begin TODAY. MazdaSpeed widebody going on with whale tail and Mariah front air dam. Not gonna be an "over-night" thing, but, the process has started. Gonna fix drivers door while at it (failing hinge). Still haven't NAILED DOWN the color yet. Right now, going for DARK red... will look black in low light and a deep red in the sun. That's the plan anyways, there's a long road of bodywork ahead, but, I've got one of the best on it!!! Thanks Joe!!!

We will be taking pictures religiously and posting our progress.... MORE SOON

Bearzah 09-29-09 07:10 PM

1 Attachment(s)
Here's a pic of my car in the booth. You can see a few of the widebody panels in the background :-p

I've yet to haul over the Mariah air dam... not really ready for it anyways.

CRY... It looks like my wheels and tires are WAY to narrow to look right with this kit... like 5-6" to narrow in the rear. Any ideas for a set of widebody wheels?

FBsliderseven 09-30-09 01:19 AM

convert to 4x114.3 and your options are much greater!
so many old school rims to choose from.

Sir Timmy 10-01-09 01:12 AM

try CONIG I got some "rewinds" on the 4X110 bolt patern maby they have somthing with reverse offset

Bearzah 10-26-09 06:54 PM

UPDATE!!! Body work in progress!!!

Check it out!

https://www.rx7club.com/nw-rx-7-forum-33/chriss-widebody-project-870711/

cds00bsmg 12-06-09 09:14 PM

Any new information in the power department for this thing? Lookin Good!

PercentSevenC 12-06-09 11:42 PM


Originally Posted by Bearzah (Post 9529648)
CRY... It looks like my wheels and tires are WAY to narrow to look right with this kit... like 5-6" to narrow in the rear. Any ideas for a set of widebody wheels?

Get some 4x114.3 adapters and some XXR 002s. Billy had the 002s on his widebody and it looked pretty good, and they're cheap, too.

Best price I found on the adapters when I looked a while back:
http://www.ezaccessory.com/Wheel_Ada.../4110-4450.htm


Originally Posted by Bearzah (Post 9418381)
I have thought of methenol injection, but, really haven't explored it lately.

Something I'm interested in trying is a mechanical pre-turbo water injection setup. Basically, you use manifold pressure to pressurize a water tank and run a line to a jet in the intake with a boost-actuated solenoid in the middle. Potentially a very cheap and simple way to increase your compressor efficiency. There was a guy on this forum experimenting with using atomizing nozzles as well, to mitigate the potential for compressor wheel erosion (though I wouldn't think it would be an issue with your setup anyway).

Bearzah 12-07-09 08:18 AM


Originally Posted by PercentSevenC (Post 9663048)
Something I'm interested in trying is a mechanical pre-turbo water injection setup. Basically, you use manifold pressure to pressurize a water tank and run a line to a jet in the intake with a boost-actuated solenoid in the middle. Potentially a very cheap and simple way to increase your compressor efficiency. There was a guy on this forum experimenting with using atomizing nozzles as well, to mitigate the potential for compressor wheel erosion (though I wouldn't think it would be an issue with your setup anyway).

I'm not at all interesting in adding any more incompressable liquids BEFORE my turbo. I'm already running a air/fuel mixture through there. IF I were to consider it, I would be running it on the pressure side.

Bearzah 12-07-09 08:21 AM


Originally Posted by cds00bsmg (Post 9662736)
Any new information in the power department for this thing? Lookin Good!

Im still working on the body... should be in primer this weekend (cross fingers).

cds00bsmg 12-08-09 09:50 AM

Recently acquired the same turbo setup you are running sans the carb. Will post some pictures up eventually. Just need to save some cash, and start looking for a car....

Post some more videos of this thing on YouTube BTW, or just more videos and pictures in general, this thing is swank....

Bearzah 12-09-09 11:38 AM


Originally Posted by cds00bsmg (Post 9665776)
Recently acquired the same turbo setup you are running sans the carb. Will post some pictures up eventually. Just need to save some cash, and start looking for a car....

Post some more videos of this thing on YouTube BTW, or just more videos and pictures in general, this thing is swank....

Well... that's a great start!! So... you dont have a car FOR the turbo setup?

If you still haven't bought a carb yet, I would recommend a holley 390cfm with choke and mechanical secondaries. A good start with jetting; 56 main jets and 67 secondaries

cds00bsmg 12-09-09 07:53 PM


Originally Posted by Bearzah (Post 9668164)
Well... that's a great start!! So... you dont have a car FOR the turbo setup?

If you still haven't bought a carb yet, I would recommend a holley 390cfm with choke and mechanical secondaries. A good start with jetting; 56 main jets and 67 secondaries

This is the second time I have had a turbo setup for a 1st gen, but no car. The first setup was FB II's, with a custom tubular manifold that had the S4 flange on it, and was a blow through setup. The cartech setup was too rare not to acquire.

The way I look at it, it is much easier to find a 1st gen, than to find a complete turbo setup for a good price.

PercentSevenC 12-10-09 01:08 AM

Don't listen to the hype regarding small carbs. I'd recommend a 600 CFM Holley or Edelbrock.

Bearzah 01-29-10 10:47 AM

I know I'm bottle-necking my engine a bit with the smaller turbo and drawthrough setup.. but DAMN... it does scoot. If I had the money I would convert to drawthrough. Would be pretty spendy and pretty much mean starting over. New fuel system... carb... larger turbo... intake... intercooler... piping... BOV... = $$ I dont have.
i think Im just gonna enjoy what I have for now

Bearzah 02-18-10 12:17 PM

My setup is running GREAT. Im cruising 7psi boost all day with NO problems. I can switch to 10psi with my EBC easily. But, I WANT MORE BOOST!!!
So, this leaves me with no other option except meth/water injection AFTER the turbo.
Here is my question... with locked timing (10*) and meth/water injection, can I run 1 bar (~15 psi) boost safely?
Thanks guys


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