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-   -   12a Square bore carb? (https://www.rx7club.com/new-member-rx-7-technical-256/12a-square-bore-carb-1105874/)

Mathius 09-28-16 10:15 PM

12a Square bore carb?
 
So I'm new to this forum, not really new to Rotary's. But I have never really got to technical with them.
I'm looking to build a 12a bridge port, with a racingbeat square bore intake. Header, electric fan, Gilmer belt drive (you know they sound cool!)
I just want a decent street motor, but what would be the best carb to run?
I was thinking a 500cfm edlebrock thunder seiries would make for easy tuning, and good street manners. Though I mostly see people running holley's over 600cfm.
I should mention I would like to keep the choke on it, and keep it simple.
The motor is going in a 76' Ford Courier.. lol

evo_koa 09-29-16 10:09 AM

I would contact Racing Beat and ask them what carb they recommend

Mathius 09-29-16 11:40 AM

They recommend the Holley 465. But it has a shaved choke horn, and I'm not a big fan of that carb.

erick31876 09-29-16 02:48 PM

The holley 465cfm that I had from them had a choke on it.

Mathius 09-29-16 09:00 PM


Originally Posted by erick31876 (Post 12110982)
The holley 465cfm that I had from them had a choke on it.

Oh?
Did it work good??
I just like the Eddy carbs better, was really hoping the 500 had been done before.

erick31876 09-30-16 09:22 AM

Yeah it worked fine

Mathius 10-01-16 01:32 AM

I'm still leaning heavy on the Edlebrock 500 AVS thunder.
I found some info on a street ported 12a running one from a different page. He said it ran great right out of the box, but needed some tweaking.
That being said, I was planning on doing a bridge port, and mixing my fuel as well. I have to wonder if it would harm/foul an Edlebrock carb? Or if I would need to do some jetting..
I highly doubt it, but the thought is there.

Mathius 10-01-16 01:43 AM

I'll add that the other option in my head was the FiTech EZ street throttle body EFI setup.
Those are sick!! But the kit is $800. Plus the intake and gaskets, the price starts to add up quickly.


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