How to add an easy 25 HP to a 12A?
Super Newbie
Joined: Feb 2001
Posts: 4,398
Likes: 1
From: Birmingham, AL
This exhaust:
http://www.racingbeat.com/resultset....rtNumber=16422 , then a Carter fuel pump and adjustable regulator. That should get close to 25hp at the flywheel with the stock carb.
If you want more get a Weber 45DCOE.
http://www.racingbeat.com/resultset....rtNumber=16422 , then a Carter fuel pump and adjustable regulator. That should get close to 25hp at the flywheel with the stock carb.
If you want more get a Weber 45DCOE.
Old [Sch|F]ool
Joined: May 2001
Posts: 12,865
Likes: 571
From: Cleveland, Ohio, USA
Open headers! 
No matter what you do the fuel pump will need upgraded if you plan on using the newfound power for more than a couple seconds/anything higher than 2nd gear. Well that's not totally right... I was having fuel starvation problems at the top of 2nd!
No matter what you do the fuel pump will need upgraded if you plan on using the newfound power for more than a couple seconds/anything higher than 2nd gear. Well that's not totally right... I was having fuel starvation problems at the top of 2nd!
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Passenger
Posts: n/a
with a cat: http://www.rx7.com/cgi-local/1catalog.cgi?cat=4&part=1
i second hanman's suggestions... and that set up should easly surpass your 25 hp target.
i second hanman's suggestions... and that set up should easly surpass your 25 hp target.
RicanRider
Joined: Feb 2001
Posts: 499
Likes: 0
From: Steilacoom, WA
If you use the RB header and RB Muffler, you can use the high flow cat that mazdatrix sells that bolts right on to the RB header.. Of course is pricey as hell, but like me, if you have to pass emissions, that's the way to go. Once emissions is over I take the cat off and on goes the presilenser....
Originally posted by brake
with a cat: http://www.rx7.com/cgi-local/1catalog.cgi?cat=4&part=1
i second hanman's suggestions... and that set up should easly surpass your 25 hp target.
with a cat: http://www.rx7.com/cgi-local/1catalog.cgi?cat=4&part=1
i second hanman's suggestions... and that set up should easly surpass your 25 hp target.
RicanRider
Joined: Feb 2001
Posts: 499
Likes: 0
From: Steilacoom, WA
Guys, you have been talking about a Carter fuel pump. Which pump in particular. I have been thinking about the upgrade but have no idea which carter pump is best... please give some info as to model num, and maybe where to get it... thanks...
Originally posted by brake
with a cat: http://www.rx7.com/cgi-local/1catalog.cgi?cat=4&part=1
i second hanman's suggestions... and that set up should easly surpass your 25 hp target.
with a cat: http://www.rx7.com/cgi-local/1catalog.cgi?cat=4&part=1
i second hanman's suggestions... and that set up should easly surpass your 25 hp target.
Passenger
Posts: n/a
Carter Competition Series, Silver Pump 180-P4600HP
Holly standard pressure reg. 510-12-804
they both come with 3/8" fittings. you need to use 5/16" barbs and hose. PLEASE KEEP THE FUEL SAFETY CHECK VALVE. it's an additional pia to mount, but you'll appreciate it if you ever roll the sucker... not that i would ever do that... ahum...
Holly standard pressure reg. 510-12-804
they both come with 3/8" fittings. you need to use 5/16" barbs and hose. PLEASE KEEP THE FUEL SAFETY CHECK VALVE. it's an additional pia to mount, but you'll appreciate it if you ever roll the sucker... not that i would ever do that... ahum...
"By the beard of Zeus!"
Joined: Mar 2001
Posts: 867
Likes: 0
From: Huntsville, Alabama / Atlanta, Georgia
Well, what other fuel pumps could I get? I hear that the Carters are loud as ****... I'm not a fan of noises coming from under my car... 
I'd give extra for a quiet and efficient pump...
I'd give extra for a quiet and efficient pump...
Hunting Skylines
Joined: Apr 2001
Posts: 3,431
Likes: 4
From: Brisbane, Queensland, Australia.
I've got a Carter and the noise doesn't bother me one bit. You can barely hear it over my exhaust, which is only moderately loud, at idle and with the stereo on you can't hear it at all.
Super Newbie
Joined: Feb 2001
Posts: 4,398
Likes: 1
From: Birmingham, AL
Originally posted by FuLLsMoKe
Well, what other fuel pumps could I get? I hear that the Carters are loud as ****... I'm not a fan of noises coming from under my car...
I'd give extra for a quiet and efficient pump...
Well, what other fuel pumps could I get? I hear that the Carters are loud as ****... I'm not a fan of noises coming from under my car...
I'd give extra for a quiet and efficient pump...
You could try the Facet fuel pump from Mazdatrix. It's good to 160 HP which you won't be able to attain unless you streetport your housings; so if you're still stock there, this pump's got you covered. It's only marginally louder than stock but does NOT like sucking air! Got mine as a gift, so I shelved my Mallory Comp110 for my '68 Bird. That is the other fuel pump I would recommend but you'll need a regulator for it and it's considered pricey by some. Fuel and spark are not the places to go budget, though, IMO.....
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