New to Porsche Need help supercharging my 3.0

[Rodsrsr]

I'm really sorry to hear that, I feel it may partially be my fault. I said that it took less than a quart but I was'nt specific. In reality it probably takes about 1/2 to 3/4 of a quart. The problem is that you dont have a dipstick to check. If you look at mine you'll see a dipstick on top where your cooler line goes. It may just be overfilled and forcing the fluid out. Try draining about 1/2 of it out and than see if it still forces it past the seal, but if yours is only putting out 3-4 lbs something else is wrong. Mine puts out 7lbs with a 3 1/2" drive pulley. Can you pop off that top fitting? If so, than just order a dipstick from Paradise for when you change the fluid.

[Rodsrsr]

I just measured the dipstick. It's 5 1/8' long and the full mark is 1 1/8" from the end of the dipstick. (the end that goes in the blower) You can put some masking tape on a pen and mark it to get a rough idea of how full it is.

[Rodsrsr]

Thats 5 1/8 "inches" long. typing too fast

[YZR500]

I think I may have found my problem. I did a lot of searching over the last few days on the Paxton stuff. SuperCharger Help" website http://www.superchargerhelp.com/index.php

is really helpful. My unit is in fact a SN92, I realized that the SN model were: SN89, SN92, SN93, SN200, and finally the VR4 upgrade which is basically an SN unit with a larger impeller (4") and a 4" discharge.

Here is an excerpt of SN model:
"SN89-SN92 uses a different case which is the case I recommend. The later updated unit was the SN93 housing which changed to increase strength on the ball drive. The insides are really the same on the unit since the 60's. They all use the same parts for replacement. The VR4 is a racing unit which they increased the pressure on the transmission(Ball Drive) and increased the impeller to a 4" and uses a larger 4" intake and 3" discharge tube. You can also under the right engine specs build 14psi and the VR4 was used for Renegade racing and you can make crazy power. Any 'SN' unit can be converted to a VR4 by changing the parts listed.(Impeller, Rear Housing, Increase Ball Drive Pressure) This is a 1 hour conversion process.
Reply With Quote"

Now, to come back to my problem, I overfill the unit apparently if overfill above the pulley shaft it will leak through the shaft. The recommended amount of fluid for the SN92 is 10oz, which is about 300 mill, in my previous post I mentioned that I removed 255 mill, which appear to be correct or close enough.
I will empty the oil tomorrow and and fill in with the correct volume, and then crank it to see if there is still seepage, hopefully not.

For now,..time to hit the hay stack, ...

Stephane

[YZR500]

I can't realy see your dipstick configuration on the photo you posted previously, but is it a screw-on type? How does it stay in, mine has a spring attached to a hook that holds it down, my guess is it acts as a BOV maybe,... just guessing here, I'm still learning.

I will call Craig at Paradise tomorrow to order a new electric oil pump for my cooler and I may order a new Dipstick as well.

Thanks,

Stephane

[Rodsrsr]

The dipstick just sort of snaps inplace. There is a small o-ring on top that creates a seal. I think that once you drain the fluid you will be fine. You might want to confirm the correct fluid for your unit. Good luck and let me know what happens.

[YZR500]

Rodsrsr, I sent you aPM but couldn't make attachments, below are the pics you may be interested in.
Dip stick

oil pump



oil cooler



My old system I removed and what I am planning on installing as soon as I receive my 3.5" to 3" reducer. This will allow for my air filter to fit just under the tail, where it should be to breath more air. Before it was tucked under the rear engine bay barely getting any air, and where it was very hot as well.

[Rodsrsr]

Thanks for the pics. Is that entire kit the one that Paradise sell? Whats going on with you car, did you get it sorted out?

[YZR500]

Yes, it was leaking from the pulley shaft because of overfill. It now works fine, but I'm afraid it will start leaking anytime soon. I order the brass tray and the entire SN supercharger refresh kit, and will do the rebuild myself, I will try anyway. I am also debating if I should go for the oversize bent impeller which calls for an increase of up to 3-4 more lbs of boost. Since mine only puts out 5-6, I am hoping to achieve 8-9 lbs, and this should come at lower RPM as well, which will be easier on the engine.

If anyone has some thoughts on this feel free to chime in. Do you thing 8-9 lbs of boost is reasonable on a stock 3.2 engine??? I am planning on re-plumbing the oil cooler as soon as I receive the oil pump from Paradise, and will use a larger oil cooler for more efficiency, my SC is running other now. I am also exploring the use of intercooling, not necessarily for more HP but rather to run the engine cooler.

Stephan

[copbait73]

Just my opinion but if it doesn't leak leave it alone and stay at 5-6PSI. For the cooling add a water/methanol system with a controller. I think 8-9 is borderline for the stock C.R. and too much on rare occasions.

[Rodsrsr]

For non I/C engines, I wouldnt go past 7 psi.

[YZR500]

I recently upgraded my supercharger with a different configuration impeller (not the pulley), which translated in an additional 2# of boost, I was at 5.5 initially and now blowing at around 7-7.5#.
My little windmill received new seals, bearing and new shaft as well.

The great thing about it is, although power band is mostly linear and shows throughout the entire power band, I noticed an increase of boost at lower rpm. It now comes earlier, say 3200, rather than at 4000 rpm.

Now, for the question: as all of you know this is an addictive thing and the real question is what's next???

I was toying with the idea that I could benefit from a larger bore throttle body. Since I am pushing so much air into the engine, although restricted by the TB or that square air monitoring device (MAF !!!), any thoughs on what would really help,... other than going to a 3.4 liter big bore, mostly after market bolt ons or simple mods such as TB larger bore and perhaps upgraded MAF.

Thank you

P.S. For those interested I have few pictures of my Paxton Windmill rebuilt/refresh and the wicked new impeller.

Stephane

[mxessin2]

How does a blown 3.2 get the extra fuel on boost? I assume by a added fuel pressure regulator that pushes the pressure up like the turbo conversions?

Lets see the pictures of your Paxton Windmill rebuilt

[JohnJL]

Nice job.
I got 10 psi and 320hp at rhw wheels but we were shooting for 15psi.
My opcon s/c pooped itself and now have a larger one on the way...yes it is addictive.

[angelny911]

Chime looks like a lot of info here .