i have bought a racing beat 4 port manifold and holley carb for my tII motor, it is a fresh rebuild with a streetport. i am going to run a n/a fuel pump and as far as stepping the pressure down i have been looking at the mallory 4039 pressure regulator(unless someone knows of something that will work and doesnt cost 100 bux), going to run the 12a distributor with the 12a coil packs as ive heard that they should be sufficient for what im doing. i am wondering if any 13b header will work and if anybody has any insight as to which jets i should start off with? also, any tricks on primary injector holes with out making it permanent or spending 50 dollars would be appreciated. i am going to try and get it running and then later down the road add a nitrous kit, the one with the holley plate kit. let me know what you think, any money saving ideas or anything that might work better. thanks guys

 

 

cheese and rice, is this a noob question or am i a dumbass or what?

 

No not really a noob question, alot of people now adays my age and younger than me are in to fuel injection. Due to the fact that carbs are time consuming to fine tune than when you travel to there states the difference makes you run better or it may make you run like crap. One of the biggest peeves about carbs is emissions in some states (Cali) thats the reason I'm now got my 7 livin in Vegas.
So because of the times with computers Fuel Injection is easyer to squeeze power out of with standalones and piggybacks. Cause you can have different fuel maps. IMO Carbs are coo if you know how to but for the average that dont just dont. If my cousin was still into Mazdas I could ask him but it's been over 10 years.
I hope you get the answer you need.
De`Moe

 

The best advice I can give is to call Racing Beat and see what they'd recommend for you to start out with. At the very least they should get you running. From there it's just jetting.

It's not a bad setup that you've got. I'd do a direct fire conversion to the distributer but aside from that it should run nicely when tuned.

 

Primary injector holes: plug with injectors and rail

I was not aware that RB made an intake manifold for the Turbo II engine. In fact, they don't!

It is different from a 13B 4-port. A 13B 4-port has 12A style end housings (because they're the same as 12A) while a Turbo II has end housing with a 6-port style bolt pattern for the intake. You could make an adapter plate, I suppose.

I sincerely hope you bought a carb modified by Racing Beat. It is much different from a normal Holley. Making a normal Holley run correctly on an RB intake manifold is beyond the scope of many carb *experts* let alone someone who is new to them.

 

I have a turboII motor running N/A but I am running a Weber DCO carb. peejay is right that RB doesn't make an intake manifold that fits the TII motor, in fact nobody really has a good solution for that motor. What I did was port open my 6-port lower manifold to get it to fit the 4-ports, you could do that with the Racing Beat 6-port manifold I am sure. Then finish it up with some devcon to make the ports match up properly.

The only other real option is have somebody custom build a tubular manifold. Thats what I will be doing when I finally get around to it.

 

Try www.tweakit.net . They have intake manifolds for TII motors. I got one for my S4 TII from them and it fits perfectly. They seem to have intake manifolds for most of, if not all the different 13b's. Heres the link to the one for the S4 TII. Its a pretty good price too as far as i'm concerned. (145$)

http://www.tweakit.net/shop/product_...roducts_id=107

 

Yes they do. They have for a long time. I've held it at RB. It's just not on their website. Mazdatrix has it listed on their site though.

http://www.mazdatrix.com/getprice.asp?partnum=16475

 

Well color me wrong, then. Nice find.

 

They don't have a Holley manifold but they do have an adapter for putting a 13B 4-port manifold on a Turbo II engine.

 

you will burn out the stock na fuel pump with a regulator u need a low pressure high volume fuel pump