How would my 88 n/a run with a supercharger and a half bridgeport? What would I have to upgrade besides the injectors?

Thanks

 

mmm.... I wouldn't reccomend that. It might be ok with a whipple/twin screw charger but overall you'd be better off going turbo

 

Why not?
I want to go turbo but I would have to find a tII engine and tranny in good condition. Might as well buy a TII parts car.

What about streetport and sc?

 

I would assume the same upgrades as TII owners do when they increase HP. Injectors, fuel pump, FCD, etc.

 

i'd think you would need to upgrade to a tii tranny also to handle the extra power

 

I'm going to do the same thing. just wait and see 6 monthes from now. it'll be done.

 

The supercharger should also require a TII tranny, driveshaft and differential if you want to avoid any stress issues down the road. Forced induction is forced induction, weather its a turbo or a SC, its gonna put strain on parts, particularily more so on parts that were never designed for high HP. Although I think that the turbo would wear the parts quicker, its still all the same thing.

As for a bridgeport with a SC, it'll work and give out some nice numbers. but I've been told that bridgeporting eventually wears out (what wears out im not sure) and im sure with the added heat of the SC and power, this would be done alot quicker.

 

SC added heat is far less then the heat generated by a turbo. if you build your system right then you won't have problems with heat or any of that sort. for example...

should you go blowthrough carb with an Eaton m-90 supercharger you should be able to eliminate the the stock Ecu fuel control. use t2 fuel pump (Which is 180LPH good for 300 HP) you'll be able to hit 250 hp with no problems. lets get down to the basics. a 6 port n/a can hit the same numbers as a t2. a supercharger will no way near get the same amount of boost as a turbo aplication. but yet it'll hit boost way early on. it'll be a perfect aplication. the low end torque loss of the half bridge port will be negated by the supercharger. it would be a good street aplication.

 

Im doing a Half Bridge + SC. You NEED to go standalone, if you don't..............Good Luck. Anyway, its possible, its probably easier to do a TII swap, but oh well.

 

you don't NEED to go stand alone. It's better yes! but you don't need it. a 4 barrel holly 650CFM 4150 blowthrough carb will surfice the tuning you need. a fuel pump upgrade is Needed to replace the n/a fuel pump though.

lets compare.

Bridgeport + Rebuild $800 minimum
Standalone $800 Used+
up Fuel injectors $150
t2 fuel pump used - $30
Supercharger $150
FAB brackets - $100
BOV - $100
Pipeing - $75
initercooler - $100
this setup is built right without t2 transmission. total = $2305

Bridgeport + Rebuild $800 minum
New Holly 650 cfm 4150 - $250
4 barrel Manifold - $250
Manifold bonnet - $100
t2 fuel pump used - $30
Supercharger $150
FAB brackets - $100
BOV - $100
Pipeing - $75
initercooler - $100

this setup is built right (carb setup) without t2 transmission. total = 1955

you can save yourself 400 dollars and alot of wireing head ache's. it will reach the same power as the FI setup. but will use more gas all around.

 

Had a roots type on full bridge, it was a waste of time. Bridge port is happiest by itself when tuned right. Drove a Camden supercharged 87 FC and also a Nelson charged FC, both were pointless.

 

What do you mean they were pointless?

 

are you saying supercharging an rx7 is pointless period? i don't think that's the case buddy. Speacking out like that is saying a half bridgeport Turbo isn't worth it. i don't buy that. an m-90 supercharger can build as much boost as a stock turbo. there have been many aplications where a stock turbo was running a half bridgeport. the persons who have done this setup love their car as it is. it suits their aplication of driving.

 

I say a video of a forum member with his super charged fc and I heard alot of whinding when he took off but I did not hear the tires squeeling. I would be scheptic until I see some dyno numbers. My freind Dave has a 89 vert and we are heading to pull a m90 out of a thunderbird this weekend. Not sure how long it will take to fab up but I have a feeling it will not put down the numbers people think on stock ems and some 550 secondaries. But we will see.
And if you are going to spend that type on money on a setup why not have ems and a turbo? And at what boost limit will you go until you install a intercooler?

 

That statement is too vague. Different superchargers have different efficiency levels as do different turbos. This statement can be either true or false.

 

A bridgeport can work great with forced induction. The problem was that a roots supercharger was used. The Camden is by far the least efficient for of supercharging. What's worse is that the Camden is a straight 2 lobe blower whereas the Eaton are twisted 3 lobe rotor superchargers. While both are less efficient than most good turbo systems and below other forms of supercharging, the Camden is the least efficient of all. This is a terrible combination to put with a high overlap engine like a bridgeport.

The Camden as well as all roots types, heats up the air pretty bad since it doesn't compress the air internally. The air gets compressed trying to force it's way into the engine. It gets much hotter this way than in all other types of forced induction. Add to this issue the high overlap of a bridgeport. Alot of heat will still get back into the intake side. This leaves you with a very hot charge and very little performance potential. Anyone considering forced induction with a bridgeport had better be using a nice intercooler and an efficient turbo/supercharger.

The Camden car I rode in had great low end power. After it got moving though I was never pulled back into my seat again. It was like the inital acceleration was just off the line. Nothing on top though. It was alot like an old Mustang GT. They feel fast due to the low end torque but aren't.

The Paxton 2nd gen I've ridden in was just terrible. While this style of supercharging is far more efficient than the roots, the lack of boost at low rpm's more than offsets this. You have to be near redline just to get any power out of it. Low end was no better than stock. I agree that it was worthless. The roots I rode in, while comparable in performance did have a higher fun factor. Between the Camden and tne Paxton I would take the Camden. However there are so many other better alternatives out there.

On a bridgeported engine, if you want forced induction and want a supercharger, the only one I'd recommend is the twin screw. It is expensive but it has an efficiency right up with a good turbocharger. Also run it intercooled. Don't waste your time with anything else. Otherwise keep it naturally aspirated or get a big turbo. First and foremost though, you absolutely need a new ecu to tune everything. Someone said you don't need a new one. That may be true if you just want the car to move but you also don't need 2 legs to get around. You'll get max performance with a new ecu. Do it before anything else. You'll be much faster this way.

 

How much power would I get w/ this setup?

naturally aspirated
half bridge
RB exhaust setup
downpipe
new ecu
new injectors

Thanks!

 

I'd go so far as to get a new intake manifold too since the stock manifolds aren't designed for a bridge. You could get away with it with forced induction but not naturally aspirated. With the right manifolds (intake and exhaust), and good ecu tuning, you'd probably get near the 225 rwhp mark. Only one way to find out. Remember though that you will lose alot of low end power off idle. A mild to stock intake port with forced induction could easily get you moving faster. A bridgeport just sounds so damn cool though. The latter option would be better for street use.

 

So It's either a half bridge or SC... The bridgeport would be cheaper. I think I would rather have a bridgeport. So I think I will use the setup I posted. What ecu should I use?

 

an E6K......check the ENigne Management forum

 

crap double post

 

What intake and exhaust manifold would you recommend?

What kind of gains could Iexpect from this?
http://www.atkinsrotary.com/store/cu...cat=285&page=1

Thanks

 

not to much, and a good bye to EFI

 

Nevermind on that sc. I just saw it and it was cheaper than the camden.

Back to my other question.
What intake and exhaust manifold would you recommend? Also I looked at the e6k. There is one on ebay right now for $800. How much for a new one? It looks like ALOT of wiring.

Is this one good?
http://www.atkinsrotary.com/store/cu...cat=589&page=1

Thanks

 

Just remember that "alot" of wiring is still easier than removing an engine, taking it apart, porting it, replacing parts, clearancing it all properly, putting it all back together, and then reinstalling it. Suddenly a few wires doesn't sound so bad.

CODEBLUE's car put down 211 rwhp at 6 psi with the Camden kit and a Microtech ECU. I rode in it at Sevenstock.