Ill have to agree that its alot of extra $$ to make it reliable. I dont belive a 3.2L is ringed right or has the right compression. I swapped my BLOWN machine downed 3.2L pistons for Turbo 3.6L piston and cyl. set.

Tuning is comencing this week!

BTW i am getting an distributor account with PLX Devices wideband controller/monitors. Anyone interested in an R-500, M-300 etc email me.

Tauran

I've read an article on upgrading my 3.0 to 3.2 and increasing hp by 30 by spending $5k and doing all the work. I've talked to guys that have spent $15-20k to get in the range of 280-320 hp. It seemed to me that a supercharger would get me in a reasonable hp range (250+) for a lot less money. Am I missing something?
Ed

Ed,
You'll find plenty of posts on what does and what does work for your buck: for example a little valve time here, a hotter spark there, tuned exhaust, etc, and then you get into cams, pistons and sooner or later you might just want to drop in a 964 engine and be done with it.

There are lots of supercharger projects in the past; posted here in the PP, documented in the euro 911 mags, and then you got the car on steroids tearing up the golf course (only kidding to my friend up north).

I guess the question is how many ponies can a 3.0 or even a 3.2 handle "safely" prior intercooling. Well, if you read back in the PP forum you hear about some who have attempted to push 325+ and ended up with blown engines. Interesting experience but not fun to R&R an engine and redo all your lovely work twice.

Shooting from the hip I would say 50 hp is "boarder line safe" with a stock engine with the right fuel and ignition controls. But you need some miles to prove it.

Now matter what route you take I would strongly encourage using AFR wide ban display in the cockpit so you can try to catch the "oops" before things get too hot. An aftermarket knock sensor would be sweet too.

There are lots of supercharger projects in the past; posted here in the PP, documented in the euro 911 mags, and then you got the car on steroids tearing up the golf course (only kidding to my friend up north).


Kuel,

I keep telling you that I can't go on the golf course because I get stuck in the sand traps.

Best regards,
Gerry


Ed,

Seriously, listen to those that have been there. HP costs $$ and reliable , safe (if that exists) HP costs $$$$$$. Plus all the upgrades you end up doing costs more $$. Its like painting one room in a house, soon you have to paint all the rooms cause the one makes the rest look bad. If all you want is 50 extra HP you could get that with an engine rebuild and capacity increase which should be between $5-7.5K. Is that cost effective?? Probably more so then adding supers or turbos. Usually, the best way to get power is the least complex way more complexity leads to potential problems which leads to more $$$. If you do decide to go with a power adder then I suggest you do it right the first time which means intercooler and engine strengthening (both bottom and top end) at the least. That's my 2 cents for what its worth.

Best regards,
Gerry

I've looked all over for some good pics of a s/c install on a 3.2L. I'm curious how the belt and s/c mounting bracket function etc. Does anyone have some good pics?

And with SoK being the 'major' supplier of these kits, I haven't seen a complete writeup of an install. Has anyone seen one?

Just curious...

Ed,
A fellow PCAer in my old region runs a Whipple supercharger on his '83 SC 3.0L with no intercooler. Makes 260HP to the rear wheels. This car has been beat on mercilessly for years on the track and on the street. It took 2 superchargers and 2 rebuilds before they figured out where to strap down the boost.
It can be done, you just simply cannot get greedy.

I have posted my engine a few times as well as other SC'd 911. I have had my SC for 8 years. I am only out of pocket 9K. SOK claims 345hp. My car is fast enough for me, and it is much better than before the SC. The Paxton only puts out 5-7lbs of boost. And, the boost comes on gradually. I must disagree with others who have posted negative comments. I am content with my horse power. The problems come when you keep trying to get more and more!!!!! It really comes down to your pockets$$$. IO did not and do not have the money for a twin turbo so I settled for a SC and I'm ok with that.

http://forums.pelicanparts.com/uploa...1146192705.jpg

[QUOTE]Originally posted by kdubb
[B]I have posted my engine a few times as well as other SC'd 911. I have had my SC for 8 years. I am only out of pocket 9K. SOK claims 345hp. My car is fast enough for me, and it is much better than before the SC. The Paxton only puts out 5-7lbs of boost. And, the boost comes on gradually. I must disagree with others who have posted negative comments. I am content with my horse power. The problems come when you keep trying to get more and more!!!!! It really comes down to your pockets$$$. IO did not and do not have the money for a twin turbo so I settled for a SC and I'm ok with that.


I have the SOK and recently did a rebuild of my 3.2 because of this....replaced the piston and cyl. with 3.6L turbo pistons. Just got them broken in. Should have a dyno for you in the next week....325HP probably

http://www.thenwhomebuyer.com/websit...033_212059.jpg
http://www.thenwhomebuyer.com/websit...033_212060.JPG

Wow, that looks awesome. Please post your dyno results. Have fun with it.

Kevin

Is the install done with the engine in the car? Do any of you have more detailed pics of the install, preferably with the engine on a stand?

What does SoK use for fuel and knock control? With say 5 lbs of boost, the engine should be reliable as long as the fueling and timing are correct. If not, it's definitely a recipe for disaster.

the pic i posted was from a company that sells the setup simlar to SOK....ive been looking for the link. Mine doesnt look at shiny as this convertible :-)

In my case, i purchased the unit already installed from a previous owner (a friend) who had already upgraded the pully for more boost. If you are going to do this you probably will want to do some engine work to make it more reliable. My problem came with using TOO HOT of spark plugs and driving at high speeds at high altitudes. If you boost you need cooler plugs. All this contributed to pre ignition.

I use J&S Safeguard for my knock control. I have talked with the owner extensively and if a few people are interested, i could probably get a discount. I dont care much for the J&S gauge so i am hooking it up to a wideband controler by PLX devices (the R-500).

I'm following the replies and I think we're getting closer to my original question(s). Who makes a supercharger to work on the 3.0 SC; where can I get info; would I have to buy one for another vehicle and adapt it? I have contacted the manufacturers I can, and no one makes one for my car, so what does everyone have? I appreciate the warning posts, and they give me a lot to think about, but I still have not found out where to even get one to consider. Thanks to everyone that replies.

here you go, i found the link to the supercharger build. I would give these guys a call.
http://www.autobahnperformance.com/

Very nice. And how much did this project cost???

Best regards,
Gerry

I'll let you have my two peneth if you want. I have recently been looking into this. I have a 88 3.2 carrera.

I bought a manual on how to supercharge engines, made by Bentley. The 3.2 217 hp cat equipped 911 has a compression ratio of 9.5:1 agaist a stock 930's 3.3 @ 7.0:1 and a non cat equiped 10.3:1. Ready for some technical jargon

The 9.5:1 which I think will be fitted in US spec cars is ripe for supercharging as long as your not greedy. You can run 0.7 bar boost with intercooler safely and see nearly 300hp. (Based on calculation from trusty manual)

I have read many claims of 345hp and I can't see a stock engine lasting long at that..I've read of crankcase pressure when achieving this kind of hp, well really can't see why can you. Running loads of boost is not the answer. I have attached a link which may help.

http://www.lextreme.com/Turbo.htm

I am still investigating this all at the moment but feel people want to strap $7000 of stuff on there engine, have huge performance gains and everyones a happy bunny...Get real when have you had your cake and eaten it without any thought.

I'm gonna read my rather boring little book and see how I feel after that, the fact is, as my car made the least power on the rollers out of all our club cars, the cat equipped 9.5:1 compression ratio has seen to that, the supercharger is a great way to go..

If I decide to do it i'll post pics and events as they happen, good luck guys.

Jay

I just spoke to Mike Parker at Super Charging of Knoxville. He said that he would be glad to speak to anyone regarding the SOK setup. Mike Parker can be reached at (865) 919-1534. I hope that this helps.

Kevin

If the PLX has a spare channel, you can log the knock/retard monitor output of your J&S unit:

This drawing shows a typical knock trace with three knocking cylinders, and the correspoding output from the monitor jack with the SafeGuard set for individual cylinder retard.

The down arrows correspond to ignition triggers. Note that the retard voltage for the present cylinder does not become valid until after the knock event, and remains until the knock signal for the next cylinder is processed. This voltage represents the amount of retard that the present cylinder will experience, the NEXT time it fires.

If you were watching our knock retard gauge, it would appear to have three LED's lit at once, since the retina of the eye has persistance. In reality, the signal turns on the fourth LED, then the third, then the seventh, then none, and repeats, until the value for each cylinder is changed.

If the unit were set to retard all mode, the output would be a flat line at the level commanded by the cylinder knocking the most.

http://www.jandssafeguard.com/MonitorVoltage.gif

3.5mm STEREO plug
Tip supplies 12v to power the gauge
Retard signal is on the Ring
Sleeve is ground
http://www.jandssafeguard.com/images/PStereo.jpg

Jay,

What exhaust system are you running?

I am in the same boat as you with a low comp USA spec engine (mines a Swiss import). I now have a Dansk premuffler and sport exhaust and HP is around 230 - same as euro cars.

Good luck.

SOK install manual
 

I just recieved the COMPLETE set of PDF's of the SOK supercharger installation. Its about 20 pages i think. PM me if anyone wants to see it.

Tauran

I'd like to get the pdfs of the installation.
Do you have them posted somewhere?
Ed