RXDOG

I just got a 82 Mazda RX-7 it has a carb that says mikuni on it and a intake from Racing beat-it has a spacer plate between the RB intake and block. It has an exhaust from racing beat. It has two accel super coils. The engine is a 13B. Is this a good setup? How do I know what size the carb is? What other things should I look for to see wat else may be modified. I am a rookie and need help. Thanks in advance.

IanS

iTrader: (4)

Yes it is modified. The 82 RX-7 originally had a 12A in it. I bet its fast... I wish mine was fast

alien_rx7

If it is the Mikuni PHH series, it'll have the size inked or stamped on the outside of one of the barrels in tiny print with xxPHH or PHHxx being the size. I have twin 40's going on my car sometime over this winter...finally! Pics of it are at my gallery site and at my cardomain site. Sounds like you purchased a nice setup! Should be putting down some good numbers.

autopaul

does the carb sit on top of the motor, curved over from the side? could be a mikuni 44 like mine,

YapaKanichi

yea sounds like my setup, could have the killer bee setup honestly, is it ported or anything?

CarlRx7

i wouldn't think that the motor is ported. it would need a 50 dco to hold that down. mikuni is pretty much limited to a stockport 13b.

carl.

YapaKanichi

dude I run a mikuni on my setup you can not even say that brah

DAVID GRIMES

My PHH44 has good throttle response and power in my rally ported 13B, but if I rev it real hard more than once, it will bog the second time ( immediately after the first fuel dump ) unless I give it a few seconds.

Small price to pay.

Still planning to go the Holley 650 and Camden Supercharger route in the Spring.

RXDOG

Yeh, this bad boy is quick! I got it at the auction for $250 and I didnt even open the hood. I guess it would have made no difference since I do not know what I am looking at After going to the jy, I noticed my engine did not look like any of the cars out there. This is my first rotary motor and when you guys say ported I am used to seeing massve big ports and everthing looks so small from what I have been looking at on the Racing Beat site. Are they the best guys to talk to in the Southern California area? Also my intake does loop over the block and the carb does not have anything painted on the outside to see how big this carb is. Where else can I look?

CarlRx7

brah, i have a mikuni setup also, and to get max power out of a PORTED 13b you'll need something that will floe a little more air.

carl.,

p.s. dont believe bratha, dig the sig

alien_rx7

You can pull the carb and measure the outlet side (side that connects to intake) with some calipers. My 40's almost measure 45mm on the inlet side (filter side) but they taper down to the outlet side. The inked print is really small. It took me a bit to find it on mine. If I get a chance tonight I'll take a pic of the area you should look at.

CarlRx7

here is a good place to get the mikuni parts

http://www.wolfcreekracing.com/classified.htm

carl.

DAVID GRIMES

Thanks for that site. I can't beieve I never came across it before.

CarlRx7

that place is awesome. i shot todd an email on wed, he called me back an hour later, i told him wut i needed, sent him money via paypal. got the part in today. SWEET!

carl.