I'm gonna be getting my re-enlistment bonus in march and I'm most likely gonna be buying a supercharger with some of the money. How much boost can my motor handle, I have a 1995 GT with a GT40 U/L intake, 65mm throttle body, 70mm MAM and a few other bolt ons? Any help would be appreciated. Thanks.
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Tolerance is the virtue of a man without convictions.
couldnt tell you the exact number, but dont get caught up in a numbers game, to an extent boost is a measure of how much pressure is needed to get through your exhaust system, just because someone has more "boost" going through their motor does not mean its making more power.
it also depends on how much hp you want to make. you will need bigger injectors and fuel pump(s) (depending on application.) and if your going over 9 pounds of boost a intercooler is recommended.
have you decided what type you want? (roots, twin srew, centrifugal)
I have'nt really decided what type I want, just kind of getting some info now. I have GT40P heads, an E303 cam, 190lph fuel pump and 24# injectors on the way, they should be here by the end of next week. My goal is to get 350 ponies to the asphalt.
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do you have an idea of what tuner is going to install it for you?
they can help you pick the supporting parts you need.
have you dynod the car and know how much hp your making right now?
350 to the wheels is about 400-450 at the crank, i doubt 24lbs injectors
and 190lph fuel pump is going to provide enough fuel to a hungry supercharger.
Originally posted by anglia_stang I have'nt really decided what type I want, just kind of getting some info now. I have GT40P heads, an E303 cam, 190lph fuel pump and 24# injectors on the way, they should be here by the end of next week. My goal is to get 350 ponies to the asphalt.
You are real close to the motor in my Ranger. It's pushing somewhere near 325hp now.
I've got an upgraded Vortech V1 on the way. It should get me close to 475 Hp.
Btw, you only lose about 35hp from the crank to the wheels if a standard tranny and only slightly more if an auto.
Originally posted by anglia_stang I have'nt dynoed it yet, do you think I need too? I'm just trying to get a general feel for what I need to do in order to S/C the car
it will give you a baseline of how much power your making and what youll need to add to achieve your goal of 350 to the wheels.
Tominator since you say your close to his setup can you share what type of injectors and fuel pump(s) your running?
im also perparing to put in a supercharger, ill tell you what ive done to prepare for it so far, maybe that will help some.
my heads were o-ringed and new gaskets put in, replaced the oil pan gasket, rear main seal, fuel tank seal, (all of them needed to be replaced on my car, because they were all going bad and adding a SC to the mix would have exposed all those weak points) i plan on using 42-48lbs injectors and i put in a 255lph fuel pump as the main pump but if need be ill add second external pump. also added an external fuel regulator
70mm MAF and a 65mm throttle body going into the GT40 intake with 36lb injectors. Tri-Y headers. 2.5 inch exhaust through Flowmasters. I do have aluminum heads. The cam is not a 'race' cam either.
Something not to be overlooked is the ignition. My Ranger has an Accel 300+ complete with Accel billet distributor and 9mm Accel wires and coil.
Something I look at is mandatory for my SC upgrade is an Accel 375 upgrade to the 300+. Dash control of boost and manifold pressure and ignition retard is part of that package.
I talked to Vortech and was told that using the FMU that the 24lb injectors would be fine though I plan on 36 or 42lb.
I read so many opinions on injector size and other mods that I've not decided exactly on my plan of action yet.
I'd run a compression check. That is the ideal way to tell the condition of a motor.
Has the oil been changed on a schedule? How regular has other maintenance been?
That motor should hit 200,000 miles if it's been taken care off and would not pose a problem with some HP upgrades.
If and when a rebuild is warranted, then get some quality heads, but you should be fine for a V1 or equivalent on the stock motor. Then as you increase modes, the V1 can be upgraded.
The only real concern is getting enough fuel to the combustion chamber and insuring no detonation. You would need a high performance in line fuel pump to supplement your in tank pump.
For a comparison, my old 1995 Mustang GTS had very similar bolt-ons. I had all the bolt-ons: 76mm maf, 65mm tb, 24# injectors, 6:1 fmu, Cobra intake, GT-40Y aluminum heads, Steeda #19 cam, 1.7" rockers, full exhaust (no cats), 3.55's, and started with a 6lb Powerdyne. I had the car dyno-tuned by Swanson Performance in Los Angeles and he pulled 381rwhp/367rwtq SAE out of it. Only had it at the track once and ran a miserable 13.4@112 on street tires. I later added 30# injectors, 7" crank pulley, and a powerpipe. On the same tune, I hit 400rwhp/387rwtq SAE. I then swapped the head unit for the gear driven Powerdyne XB-1 (9lbs), changed to 36# injectors, and ran into a lot of tuning problems. Unfortunelty, I sold the car for my 03 Cobra but the new owner dynoed a best of 470rwhp/420rwtq SAE with that combo and 42# injectors.
Dyno numbers are nice and all but the real benefitl for me lay in the tuning available while on the dyno. Once tuned properly, my car had no drviability issues as well as having what I would call a relative safe 11:1 air-fuel at WOT. I had no one in the local are to tune my XB-1 set-up and had too many issues. My advice is get the car tuned by a known proficient tuner. Even if you get the car running good, you will be leaving a lot of hp/tq on the table without it (at least in my experience). Good luck.
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unfortunately for me, I'm in England at current and I'll have to have a Brit tune it for me. Do you think I should wait until next march when I get back to the states and have a Ford dealer tune it for me?
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What you want is a reputible tuner that has done many cars with power adders and REFERENCES! If you cannot meet that requirement in England, and I've not a clue what is available, my choice would be to wait until stateside.
How much Boost??? 
