Does anyone know what the HP increase is to the wheels on this kit on an otherwise stock 350?

ATI's website says 55-65% increase at the crank... but what does this mean to the wheels?

 

lol

 

Subtract 20% from the 55-65%, then you put that in the discombobulator combobulator. Put that in your flux capacitor and you have your awnser?

 

now wait a minute i have a special edition flux capacitor,what will that give me.

 

expect around 350-400rwhp with the bigger pulleys. Don't try to boost too high or you'll have nothing but problems with belts, twisting...ect.


Procharger customer service SUCKS!!!! Trust me, been there, done that, will never go back

 

Didnt you put quite a bit out with a built engine with your procharger? (Isn't Procharger located IN Kansas City btw?)

 

Man...I put so much damn hope, pride, and money into my procharger setup but finally realized that it was just not meant to be.

However...if your cool with 400rwhp and don't want more than it's a pretty good setup

Once you spin it too fast the brace starts to twist and belts snap. The car really felt more like a V8 with kit because power was so linear.

But after getting my Greddy twins there was no comparison

The only problem with superchargers is that all the power is right at redline, who drives most of the time at redline? If you steped on the gas at say 4000rpm there was not much there. But with the greddy kit the TQ just rolls you over.

I tried the bigger intercooler, water/meth injection and the only thing that did work very well was a 100shot of NOS with the supercharger, now that was fun

Yes procharger is here in Kansas City and the guys there are ******, they hate imports. But if you had an old school camaro, vette then they will treat you like royalty, maybe.

 

Thats too bad. Superchargers are fun but I guess turbos are ..funner?

 

thanks to the serious reply's... the rest of you can suck a fatty...

can you imagine someone who is coming out of a Jeep Grand Cherokee who has no knowledge of anything concerning cars asking a question without being laughed at?

oh wait... Jersey... that explains it..

=)

 

^Hahaha. You gotta have thick skin around here. It's all in good fun, don't take it too personal.

 

Hey my reply was serious subtract 20% that = drivetrain loss generally. The rest was just to be funny

 

No, don't think that is right either..hehe.

If you upp'ed the crank power to 1000hp then the drivetrain loss isn't going to be 200hp all of a sudden through the same rpm range but generally you're correct. No disrespect and there is also the positive displacement charger where the trq increase is felt right off idle.

 

If you just use the stock pulley and the 7psi, on a motor without any other mods and tune it conservatively, you will deliver approximately 350rwhp. I had one of the first ATI Procharger set ups in California (fall of 2003) on this motor, and got 22,000 very good miles out of it. The customer service for me was a good experience. When I shredded a belt at 18,000 miles it was obvious that there was wear on the pulley cog teeth/ridges. They just shipped me a full set of new pulleys for free...two years after purchase of the unit. Apart from that loss of a belt, and another time at 12,000 miles which was my fault for letting the tension get a little bit too loose, absolutely nothing was a problem with the unit. Yes the fitment was tight, yes the intake screen was a pain, yes changing the oil in the unit due to inacessability to the the drain plug was a bear. But it worked and at the time there were not other alternatives that did. A lot of pioneering was done on these motors with that unit. Good things discovered and bad mistakes made. Now there are lots of choices.

The centrifugal supercharger is a "lazy" spool up. It does not really get going until 3,000 rpms, at 5,000 it becomes a beast and it keeps pulling right on up through 7,000. You find yourself shifting at 6,500rpms and never letting it get below 5,000......you live "up high" in the band. On the track, it is a beautiful thing. Seamless and instant power and you have very fine throttle control. It sounds like a jet which is neat, and with the windows down on track days, they hear you coming up on them from behind ..... and going by!

The turbos are more complicated, more expensive, more of a heat problem, etc. There are pros and cons to both. I like both. But if you are going to keep the motor stock....then FI through SC is a very legit choice. If you want to go for bigger power than the stock internals will handle, and thus build the motor, the only real choice at this time is to go turbo. I ultimately went with the JWT TT using the 530 BB units on a built motor from VRT, and with a conservative boost setting of 12psi push rwhp of 479 and rwtorque of 566 lbft. That is plenty for the track circuits. (I can dial up some more, but it is progressively harder to use it, so the smaller turbo units with their fast spooling and low lag factor present a nice option for using turbo power on the track. The peak power zone is reduced now from the centrifugal SC experience around 6,500 to around 4,000, so up shift point is now around 5,000 rpms.) If somebody did a Lysholm design twin screw supercharger, then that would be a tremendous option for the car on a built motor, with the low power inception thresh hold like an Eaton blower, the steep curve of the centrifugal, and the top power of the turbo without the lag...an incredible combo.....but nobody does, or at least I am not aware of one. The machining of the lobed rotors is very expensive and there just is not the market for it to justify the R&D, plus all the fuel system work etc. It took a couple of years for the turbo kits to really get worked out, and even now there is still a lot of empirical discovery involved. (As in, "oops, it blew up...guess we better make a note of that and do something different!")

The power train loss varies between the AT and MT cars, but a fair loss estimation would be between 14 and 16% for the MT, and slightly more for the AT, perhaps as much as 18%, but that would be the high end.

Hope that helps.

 

Good post Eagle

 

+1 for Eagle1

I had a very simular experience as he did with the ATI and then a built motor but with the APS TT kit. I agree with everything he said.

 

many many thanks Eagle..


I don't think I am going to progress much more into the modifications with this vehicle then the Procharger. I actually just bought the car and it had this already on it.

Do you have any recommendations on what I should do to inspect/service the SC besides changing the oil within the unit? ATI is mailing me a service manual as prior to this car I have only basic mechanical experience.. nothing in the area of aftermarket mods and such..

again, thanks for taking the time man..

 

The Procharger is a fairly simple set up. DO change the supercharger oil religiously according to schedule. DO monitor the tension on the belts regularly.
Do keep the window down in good weather to enjoy the scream from it.

Get a simple book on superchargers, like Corky Bell's book, and READ it. If you understand more about what the unit is doing, and how, it will help you to drive, diagnose and maintain the car a lot better. And really enjoy it. The application of forced induction is not free....it is not a "fire and forget" weapon. It is a constant element in your car routine. If that is fun, it is not a chore at all. It enhances the pleasure of your fine car. But if it is a chore, then it will probably have the same life expectancy as a tropical fish where you don't really care to feed it and clean the tank and filters. Pretty soon, it goes belly up. Care for it assiduously, and you should be rewarded with many miles of outstanding performance and fun. Gas mileage will not be great....but the cost per smile is very reasonable.

As for mods. The ATI is a unit that can pretty much allow you, on this car, to leave everything else stock, and it will perform nicely. You can squeeze a few extra hp out of the car with a quality aftermarket catback exhaust. But realistically only about 10-12hp so is it really worth it? Probably not for $1,200. That is not a bad gain for the money, but with the big pop from the SC...you have plenty of power. Headers are a pain in the neck to install on this car. They make a neat growl, but the hp gains are modest, especially if you already have the catback. Indeed there are some instances, myself included, where the addition of headers actually reduced dyno hp. It was regained when I went to high flow catalytic converters....but if you don't want to do both...leave it at a catback.

If I were in your shoes and ever was interested in making the car perform better, as a complete car, I would concentrate on mods related to suspension and handling. Anti-roll bars, coilover springs and dampers, lighter wheels and bigger tires. Leave the clutch, flywheel and differential alone unless you want to get very serious. Those can be "bad boy" changes that alter the character of your car as a daily driver significantly and are to the taste of relatively few owners. Rowing through freeway traffice with a 10 lb flywheel and carbon clutch, mated to a mechanical limited slip differential is something that actually delights me.........but when your own Mom says you are not right in the head, take notice.

You will have a lot of fun with this car and the ATI. Just learn about it, watch it, and ask lots of questions. And never run anything but premium fuel, ever ever ever. Otherwise you will be introduced to the concept of early detonation or pre-ignition...........and you don't want to be, unless your idea of new experiences that could be interesting includes concepts of taking a shower at the county jail or learning how to apply roofing asphalt in Texas during the summer.

 

i'm running about 380 without tuning from UTEC. upgrading to the 9 psi pulley and hoping to get slightly over 400

 

thanks everyone for the input, esp Eagle... you guys helped out a lot..

 

Your gonna need alot more brake pads too.