RX7ven

OK, ive been out and down for a lonnnnggs *** time, not only did my comp **** on me, but also, the carbs i bought, they werent even HS6's they are HIF's.. im having some difficulties hooking these bad boys up...

I have the gas inlet and gas return lines hooked up nicely, all i need to know is what vacuum lines im supposed to use.. im stuck and and tried everything but be here... (comp was down)... im back, and dammit i need help...

i have read as much as possible, tried to undertsand everything, even called Mazda dealership to see if there guys knew anything, they know NOTHING... Im praying that someone here can give me some input.........

i need Info on where all the vacuums that are NEEDED in order to get my car running..

-i know there are 2 lines coming from where the oil is... without looking at the book, i think its the ventelation check and the other one is for the charcoal canister.. is there anymore, other vacuums, my carb runs off of?? ive been looking high and low, all over that motor/rotary.. but still no fire up...

- Gas is going into the motor...
-there is small sucking from the intakes...
-gas is returning.. circulating...
-vacuum lines are all new..
-T-splits are used where necesary...
-RATS nest is gone..
-Air Pump is gone..
-i have many wires that are loose, what do i do with them?

starting from scratch would anyone be able to define it for me...
i can identify everything on these SU (Skinner Union) carbs, but im dumb fucked about where the vacuum lines go... thanks.. for EVERYONE who can give me just the most littlest info.. Aloha ...

DriveFast7

iTrader: (1)

Well, with no smog equipment and an aftermarket carb, you need only 1 vaccuum line. That's the brake booster vac line that plugs into the intake manifold.

A crankcase breather is reccomended, but no vac line needed. Just put a little k&n filter on one of the ports on the intermediate housing, either the one on or near the oil fill tube and plug the other one.

Besides that just plug or get rid of all the other vac lines.

Be sure any and all vaccuum ports on the intake manifold are either being used (brake booster) or plugged. Do you have oil in the top of the SU carbs?

As for all the loose wires that were for the rats nest and smog, if they unplug from the harness then do that. Otherwise, if there's no smog test ever for the Aloha State then cut them out.

Charcoal cannister is for the stock air filter to breate into and the gas tank to breathe into. Charcoal absorbs the gas odor.

I bet Mazda dealer never worked with SU's before at work! Mabye on the side..

Do you have the semi-recent Grassroots Motorsports article on SU carbs? If not I can scan it for you.

Are you getting spark? Motor still got compression?