bridgepport 12A how much power?
#1
bridgepport 12A how much power?
I have been thinking about bridgeporting my 12A in the future. How much power should I expect? It will have either a holley 650 or a weber, along with all of the goodies that will go along with optimizing the system. I have also considered the option if the turbo II engine swap. What do you recommend?
#2
As for as a bridged 12a. I think you could make a good 200-225 hp. with a weber. trust me if you go with the 12a then use the 48 IDA. Any ways you can't beet a simple carbed 12a.
CJG
CJG
#3
200 - 225 I was hoping for a little more. What will a turbo II swap give me? What are the price differences? I really like the 12A It is a great, simple setup. But I also really like power. Is that really all you can get out of a well tuned brideport 12A with all of the goodies?
#4
Old [Sch|F]ool
If it's a full bridge then you should be able to see more like 225-250, it depends a lot on your exhaust too... the quieter up make it, the less power you have. With big chokes in the carb (prob. need a 51IDA) you can see lots more than that, like 275 or so, maybe a little more depending on porting, with an open (painfully loud) exhaust.
There was one person on a mailing list who said he had 187whp measured on an Australian dyno, bridge port 12A in street trim...
There was one person on a mailing list who said he had 187whp measured on an Australian dyno, bridge port 12A in street trim...
#6
I would think a 48 would be maxing out on a bridge. Im getting a 48DCOE to go with a street port. I know, IDA's are better than DCOEs, but I still think, like PJ, that a 48 would be a restriction.
MazdaRacing.com suggests 50DCOE - DCO/SP. Thats whats in their "12A Bridgeport Intake Kit"
MazdaRacing.com suggests 50DCOE - DCO/SP. Thats whats in their "12A Bridgeport Intake Kit"
Last edited by FB + AWDDSM; 01-25-02 at 11:00 AM.
#7
I am goint to run a 48 on my p port. The trick is BIG venturies... hahhaa. Any ways ya the 51 helps some but I am not sure if it is worth the money. I am going to stick with the 48 and I it's not enough then I will bore to 51 or 52mm.
CJG
CJG
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#9
standard combustion
Join Date: Dec 2001
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I didn't get as much HP as I wanted with my bridgeport, ofcourse the engine is severily under carb'd with a Mikuni 44PHH system. IT does haul *** though easily to 120mph before I get scared. 0-60 was in the 6's and I suck at lauches and stock gearing, bad tires. But I know with a the right carb say 48mm is close to best because going to 51mm will mainly just help peak rpm but hurt midrange a little more. I am getting a better lowend engine that is due to undersized 44mm Mikuni making more midrange4-6000rpm range then a larger bore since velocity is less comprimised at lower engine speeds. I'd however gladly go to a larger bore carb when I get enough money to do so.
#10
Originally posted by RXcetera
What size venturi chokes will you be running?
What size venturi chokes will you be running?
CJG
#12
The AUTO DOCTOR
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r.b claimed with a 13b bridge and a 650 holley setup they could ring 260, wit ha 51mm weber they got 285, from a 13b. i think im gonna do a bridge on a 12a i just pulled
#14
Old [Sch|F]ool
Most Holleys aren't as tuneable - you can't play with stuff like idle jets or any air bleeds.
The HP series carbs do have adjustable air bleeds - but they cost about $500 vs. about $200 for a regular carb. RB really sticks it to you when they sell you stuff, too.. they want about $200 for a pair of float bowls that you can buy anywhere else for $50. It's unreal.
Demon carbs (redesigned/reworked Holleys) can be had with adjustable everything and removeable venturis... but you're looking at over $900 for the carb!
The HP series carbs do have adjustable air bleeds - but they cost about $500 vs. about $200 for a regular carb. RB really sticks it to you when they sell you stuff, too.. they want about $200 for a pair of float bowls that you can buy anywhere else for $50. It's unreal.
Demon carbs (redesigned/reworked Holleys) can be had with adjustable everything and removeable venturis... but you're looking at over $900 for the carb!
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