Scruch

Hi friends a lot of you know that i gonna swapping my 12a with a 13b .

the work its over, now the last parts arrive from mazdatrix and then we put in the 13b into the car.


but a big question i have, the FUEL PUMP of a 12a its ok?
I have a Holley Carb , and a 13b 6 ports, can i use my 12a gas pump ?

How much Rpm can i run my 13b with that gas pump?

Where can i find a good pump for my new engine ? Must i change it? Can i use a common generic pump from maibe anothe car and use it for my engine? or must be a genuine rotary engine gas pump ?

thanks a lot!!!

rhinor61

I really don't think using a stock 3.5 psi pump for a 285cfm carburetor will keep up with a holley/6port engine. Remember more power needs more fuel. I would look at a Carter fuel pump and a Holley fuel pressure regulator, you are looking at around $100 for the set up from summit racing.

John

Scruch

For you at what rpm can do my stock pump ?

pS: thanks very much for reply!


its oki a generic delivering 6 psi @ 20 gph ? maibe froma old Ferrari ? or a common auto.. not a specific rotary auto..

RotorMotorDriver

iTrader: (1)

Yes, any pump that delivers the required fuel amount will work. But you also need a regulator to keep the pressure constant.

~T.J.

Pedestrian X

you can use whatever pump you want but you are going to need a regulator to keep a steady flow going to the carb.

Scruch

thise regulator.. can i use that stock from the 12a ?

coldy13

Stock doesn't have a regulator.

Scruch

oh understand.. i hope can find a regulator from a normal car .. in some place here .. regulators are easy to find? and i can use any regulator i want or? not specific regulator for rotary?

thanks =)

Pedestrian X

Like sumoen above mentioned just check summit racing. for about 100 bucks you can get a new pump and regulator.

Pedestrian X

make it even easier for ya

carter fuel pump
http://store.summitracing.com/partde...rt=CRT%2DP4594

and the holley regulator
http://store.summitracing.com/partde...HLY%2D12%2D500

Scruch

thank a lot predestarian! thanks!!

tomorrow i speak with my mechanicker and maibe i will take thise! =) thanks!

RotorMotorDriver

iTrader: (1)

Scruch, that pump is fine, but you should buy the regulator I posted below instead. Its the same thing as the one PedestrianX posted, only its cheaper because its not chrome, and the right pressure range . Also. dont forget a pressure gauge too so you know how much pressure youre running!

~T.J.

So, this is what you will need:

Pump - http://store.summitracing.com/partde...rt=CRT%2DP4594

Regulator - http://store.summitracing.com/partde...HLY%2D12%2D803

Gauge - http://store.summitracing.com/partde...HLY%2D26%2D500

PS - Thats the same fuel setup I used, and it works fine .

Pedestrian X

Thanks for the correction.

Scruch

ahh thanks!!!!!! =) thanks to all 2 !

wow also the indicator of pressure, i think i will take that...

only a question my car work at low rpm without all thise stuff ?
why monday i need to use my car and dont think that the shipping is so fast ... for thise holley reg ,pump and indicator..

RotorMotorDriver

iTrader: (1)

Yes, it should run without that stuff, but it will have some fuel starvation problems at higher RPMs. I used my stock pump with my Weber for about a month before I upgraded the fuel system, and it was fine. It just ran a little dry at the top of the gears .

~T.J.