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Old 10-21-2001, 04:46 PM   #1
Audipwr1
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I have the option of buying a 98 RS that was turboed for 14k (with about 7-9PSI) and is now without a turbo. It still has the supra fuel pump. What should I do to see if the car is worth buying? What tests should be done to the motor to assure it is in good working condition?
I need some help here guys thanks
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Old 10-21-2001, 06:35 PM   #2
tulit
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I think a leak down test would be most helpful. It will tell you a lot about the condition of the motor.
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Old 10-21-2001, 07:33 PM   #3
Audipwr1
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What is the cost on that? Can any dealership do it? What exactly do they do?
What about the fuel pump? should i get a stock one or leave the supra one in?
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Old 10-22-2001, 12:46 AM   #4
Poppa smurf
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Quote:
Originally posted by Audipwr1
What is the cost on that? Can any dealership do it? What exactly do they do?
What about the fuel pump? should i get a stock one or leave the supra one in?
the supra pump is in there for a higher flow rate so leave it in.
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Old 10-23-2001, 09:23 PM   #5
Audipwr1
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how do i control that high fuel rate though? does the bell fpr work like this, if so how do i work it?
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Old 10-24-2001, 02:32 AM   #6
aussiebrydon
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Hey dude, how much was that car? My car has 32,000 miles on it, and I installed a new TEC and used ASR Stage II turbo from my friend Ian. I didn't set up up the TEC properly or something so I now have something like rod-knock. I'm going to have Subaru rebuild the engine for me, so are you interested in the car once I have it fixed? It'll be a MY00 2.5RSt with 0 miles after a factory rebuild, plus it'll have a TEC.

Just let me know,

Brydon
AussieBrydon@yahoo.com
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Old 10-24-2001, 09:31 AM   #7
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A compression and leakdown are in order. My car has run for 3k miles post-turbo removal and has been fine, so if the car wasn't abused you might be ok. I ran up to 13psi for 22k miles and with the exception of a CE light for a poorly sealed fuel tank (didn't get the gasket right swapping the fuel pump) it's been normal. You should buy my car, it's 2 years newer... 13k!
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Old 10-24-2001, 10:40 AM   #8
Audipwr1
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someone here must have a supra fuel pump and a bell fpr and a SFAC that has run the car without a turbo and knows how to make it run properly i know it comon someone just tell me !!!!!!!!!!!!
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Old 10-24-2001, 11:25 AM   #9
RyanC
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Relax skippy! I doubt many people would run a better fuel pump and up the fuel pressure when they are N/A... just a thought though.
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Old 10-24-2001, 12:02 PM   #10
Audipwr1
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someone has, though installed the pump and fpr and then had to wait a while to get the turbo on, anduring that time how did they drive the car?
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Old 10-24-2001, 01:01 PM   #11
AaronB
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I would assume that the car would run fine with the bigger fuel pump, you will just have high fuel pressures. RRFPRs won't do much for you since most of them only rise at positive manifold pressure (i.e. boost).

I would be surprised if you needed to anything to adjust for the high flow pump. You could swap the stock RS FPR for a SVX one if you wanted to get the fuel pressures back down to normal, but unless you were running really rich I wouldn't worry about it

Those are just my opinions, I am NOT a Subaru Master Mechanic so take them for what they are worth.

Aaron
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Old 10-24-2001, 01:03 PM   #12
MattC
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Well, most bell units don't really become active until 1 or 2psi. So, its probably not doing much anyway. I would just take it out. The Supra fuel pump has a tendence to overload the stock FPR at idle. Pressure was bumped up on my car to ~43psi from something like ~36psi. Besides that, it will act exactly like the stocke pump. The AFC also does completely nothing. In fact I would probably take it all out and make a couple bucks.

Cheers,

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Old 10-24-2001, 02:15 PM   #13
Audipwr1
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the AFC isnt great, but it does lean or rich the mixture, certainly better than nothing, and I cant just run the supra pump at idle and at accleration itll knock
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Old 10-24-2001, 03:08 PM   #14
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Quote:
Originally posted by Audipwr1
I cant just run the supra pump at idle and at accleration itll knock
It does?

If that is the case I would think all RS'es with upgraded pumps would have these problems when not in boost, since the RRFPR doesn't do anything until boost hits. Maybe I am just missing something...

I am running a high flow pump and a low compression engine on the stock ECU and the ECU can compensate enough to make the car driveable. I still get good mileage as well.

Aaron
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Old 10-24-2001, 03:55 PM   #15
Audipwr1
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ARRON THAT WAS EXACTLY WHAT I HAVE BEEN WAITING FOR!! AN ANSWER. thanks so much, Did it not have any problems when the turbo wasnt on too
Remember that this car wont hit boost cause it doesnt have any, so will this become a problem at higher revs???
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