carb conversion
Full Member
Joined: Nov 2003
Posts: 78
Likes: 0
From: puerto rico
Originally Posted by Fire85GSLSE
If you want more power and still have good reliable FI here is what I would do.
Get and S4 or S5 NA motor. Streetport it during the rebuild. Put your GSL-SE front cover and oil pan on it. Get a lightweight flywheel and match the counter weight to what ever rotors you run (s4 rotors s4 counter weight). Have your injectors rebuilt. At this time you could either run the stock s4/s5 ECU on you GSL-SE or run your stock gslse ecu. If you use the stock s4/s5 ECU get the wiring harness so you can run the 4 injectors. Use the pair of 720's and a pair of 550's.
If you use the GSL-Se ECU run the stock GSL-SE injestor and add two extra 550's with a megasquirt fuel computer.
At this time I have the S4 rotors/housings in my GSL-SE.
I am using the stock GSL-SE ECU but want to add two more injectors and get rid of the barn door style Air meter. HKS had a injector computer that is able to run 2-6 more injectors. I saw one on e-bay for 200 and did not pick it up. Now I wish I would have.
Well, good luck with what you do.
here is my motor,
Get and S4 or S5 NA motor. Streetport it during the rebuild. Put your GSL-SE front cover and oil pan on it. Get a lightweight flywheel and match the counter weight to what ever rotors you run (s4 rotors s4 counter weight). Have your injectors rebuilt. At this time you could either run the stock s4/s5 ECU on you GSL-SE or run your stock gslse ecu. If you use the stock s4/s5 ECU get the wiring harness so you can run the 4 injectors. Use the pair of 720's and a pair of 550's.
If you use the GSL-Se ECU run the stock GSL-SE injestor and add two extra 550's with a megasquirt fuel computer.
At this time I have the S4 rotors/housings in my GSL-SE.
I am using the stock GSL-SE ECU but want to add two more injectors and get rid of the barn door style Air meter. HKS had a injector computer that is able to run 2-6 more injectors. I saw one on e-bay for 200 and did not pick it up. Now I wish I would have.
Well, good luck with what you do.
here is my motor,
Thread Starter
Joined: Apr 2003
Posts: 5,547
Likes: 12
From: calgary
Well it looks like the weber is going to be the choice. I'll have to start some pricing though. There is a guy on here with a dellorto, but I get feeling risky about sending hundreds of dollars, thousands of miles away, across the border to a complete stranger. No accusations though! Just feels risky. I have experience with the holley from my muscle car days but the weber looks awesome and has positive feedback. I would like to hear from others running this combination and there et's and results. Whos thinks I should rebuild at 140 km or delay. A lot suggest going with lighter rotors and newer housings but I like the mid range torque the SE motor presents as well. I am thinking a half bridge on the secondaries with strettport on the rest combined with the weber may yield about 50 horse without much loss in torque by retaining the SE internals.
The problem a weber presents is that its only 2 barrel. So you have to feed it as you accelerate. You can't just plant your foot down and go like most 4 barrel carbs.
I personally think you'd save alot of money if you went Holley. $350 versus over $1000 for an IDA 48. Even the DCO and DCOE's are expensive, and thats before you get an intake manifold. Put the saved money into the engine or exhaust. And with a Holley, you can walk into a store to get it now. I wanted to go weber on my S4, but I couldn't find anyone who carried them. It was always 'We can get them for an arm and a leg'.
However, if your interested, I know someone that has a One peice Sidedraft intake manifold with a Mikuni setup on it for a 6-Port engine. You can just trade the Mikuni's for webers if you with a sidedraft.
I personally think you'd save alot of money if you went Holley. $350 versus over $1000 for an IDA 48. Even the DCO and DCOE's are expensive, and thats before you get an intake manifold. Put the saved money into the engine or exhaust. And with a Holley, you can walk into a store to get it now. I wanted to go weber on my S4, but I couldn't find anyone who carried them. It was always 'We can get them for an arm and a leg'.
However, if your interested, I know someone that has a One peice Sidedraft intake manifold with a Mikuni setup on it for a 6-Port engine. You can just trade the Mikuni's for webers if you with a sidedraft.
FD > FB > FC
Joined: Oct 2002
Posts: 3,873
Likes: 3
From: Bothell, WA
well yeah if you just stomp on it at 1500 rpm it bogs, anything over 3,000 you floor it and your good to go. If your launching below 3,000 you got other problems to deal with first... like your driving skills LOL
Ya but if your passing on the street and your in a high gear (like 5th) and romp on it, its gonna buck and probably stall. Its the same effect as putting a carb thats too big for and engien on it. Like a 1000CFM holley on a 13B. But launching at 3000+ RPM all the time isnt exactly a clutch saver.
FD > FB > FC
Joined: Oct 2002
Posts: 3,873
Likes: 3
From: Bothell, WA
it doesnt stall or even buck, the only thing that will happen is if you are like 1200 rpm in first gear and you stomp on it, it will go WHOMp.......................WHAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAA
Anything else its fine, I jkust floor it all the time in 5th to pass people
Anything else its fine, I jkust floor it all the time in 5th to pass people
Stumbling
Never had that happen with a mikuni setup, it was instant acceleration wheather it was out of the wholoe or 55-100, you have to jet it right and use the correct 2.0 needle seat assembly. rx7doctor
