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!!!

 

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

 

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..

 

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

~T.J.

 

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

 

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

 

Stock doesn't have a regulator.

 

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 =)

 

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

 

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

 

thank a lot predestarian! thanks!!

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

 

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 .

 

Thanks for the correction.

 

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..

 

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.