Whats the best mild carb upgrade for a 85 12a with exhaust, intake, and stockports? Should I even need one? I know I could search but I want to get *recent opinions on this. Picking up a near mint 85 for 800 this weekend I'm so happy

How much hp at the flywheel do you think it would have, 120ish?

 

Mikuni 44Phh would be the way I would go...

you can also consider a Sterling or Yaw modded stock carb.

 

how would a 44phh be on a 6 port 13b? or in that case would a 4bbl holley be a better choice?
sorry for the hijack

 

it's a 12a

 

I know, I have a 13b 6port, thats why I hijacked

 

Full racing beat exhaust, Weber 48dcoe, Streetport it, Carter FP, holley FPR, and if your rich dream of turboing it. (very streetable probally 200hp with a big streetport)

Or: Bridgeport, 3" exhaust, weber 48IDA (not streetable power = 6000+ rpms)
or: Buy a T-II Engine and mod it and get everything you need to drop it in while you drive your car. (very streetable, expensive)

 

A mikuni 44phh is too small on a 6port 13b if you ask me, I would probally go for the holley or a weber.

 

dyno on a junkyard 12-A with mikuni.
quote:
Junkyard 12A, stock intake port, Mikuni carb, 87 pump gas.
100 HP. Car weighs less than 3K #


here's the link

http://www.socalrxclub.org/calendar_details.aspx?id=76

 

whats the compression on a "junkyard" engine??

 

dont know but here's a couple also- https://www.rx7club.com/west-rx-7-forum-193/so-cal-rxs-dyno-day-431015/

 

look into a sterling carb, save money on manifold, stock-like appearance

 

I have more than this at the wheels from my 12A using a weber IDA.

the car is very streetable..

Bridges can be streetable too... with the proper porting and tuning.

for a stock port 12A i am still beside the Mikuni....

however, there is no way in hell a single 44phh would keep up with my present 12A

 

the 85 runs perfect and I already have a quick turbo second gen so I'm just going for something that can get into traffic alright but not spend alot of money on. I can get dual 44 deltoris off a friend of mine for $300, too big? That involves swapping the manifold right? I just want a stock carb upgrade I guess, not needing to change the intake manifold.

 

do a sterling modded carb if you are wanting to keep your stock intake mani...

 

You don't need dual dellortos. Thats WAY too much for a stockport 12A. One 44 dellorto would be perfect for the 12A though. But If I was you, I would go with a sterling or yaw modded nikki carb. Best bang for the buck, and come fully tuned out of the box. Minor adjustments may be nessesary, but it would basically be a direct bolt on, after you get a bigger fuel pump and pressure regulator. Stock fuel pump won't feed anything bigger than the stock carb, and even then it has a hard time keeping up sometimes.

 

I thought the delltoris would be two much, bout double of what I need. Thanks alot, can't wait to get this FB, I like it more than my second gen.