ok im sure that this has been posted before a thousand times, but id like to know what kind of carb would work good on my stock 84 gs 12a. ive heard a little bit about a sterling carb but i dont know whats better cause ive also heard about holly beat and other stuff. so again im sure its been posted before, and if it has show me where to find it, but id like some input of the pros and cons of each

 

It really depends to who you are talking to. The sterling is a modded stock carb. Some can get holley's to run properly, some hate them and stick with a 2 barrel such as weber mikuni, dellorto.

 

It's impossible to define better without a context.

What are your plans for the car? How will you be driving it? Will you be racing it? porting it in the near future?
How much time and effort are you willing/wanting to put into learning how to properly tune your aftermarket carburetor?
What experience do you have with working on carbs already?
Do you drive the car in cold weather at all? Do you have to pass emissions?

Jon

 

This is almost the exact question i was gonna ask. my carb on my 12a is leaking so its time for a rebuild. now i was wondering should i upgrade. and if so what are some good reliable choices. my rx7 is mainly stock just an exhaust and header. i daily drive it so im looking for just a bit more kick threw the gears. as for smog i live in AZ so its a b**ch.
"sorry i dont mean to thread steal" but im a newbie to this rx7 stuff so all help is great
also i realy dont plan to race it or port it.

 

 

well its mainly a daily driver, i just wanna do something to put a little more power into it. i have no experience on carbs and i still need to pass emmisions.

 

Sterling carbs FTW. Best carb there is for non-ported rotaries, in my opinion.

Holley and Edelbrock are both nice choices, but you have to do some work to get them to work WELL (unless you get one of Racing Beat's pre-modified Holleys).

Weber, Mikuni, and Dell'orto are pretty sweet two-barrels, but be prepared to sacrifice some low-end and fuel economy.

Keep in mind that none of these will make passing emissions easy. Possible, sure, but you'll have to use some dirty tricks to do it. You might be better off keeping around a stock carb to swap on long enough to pass emissions. Also remember that you'll not see very impressive gains unless you also equip a better-flowing exhaust system.

 

+1 on the Sterling.

It's a good quality carb that's infinitely more tunable than the stock one. It's also a good carb for someone who wants to get into tuning because you'll start with a carb that already works well on the car, and you can go from "well" to "freakin' awesome"... instead of starting with a Holley or Dellorto and having to go from "this damn thing doesn't work right" to "well it kinda works right now" to "alright I guess that's good"

But if you need to pass emissions, then you're pretty much stuck with stock. Sorry dude.

And if you need to drive in late fall or winter, don't go with a 2-barrel. Cold starts are not their forté.

Jon

 

https://www.rx7club.com/showthread.php?t=671252

heres just what your looking for.