I'm looking at the ATI Procharger right now and they have quite a few options, most of them have a range of boost. What does that mean? Is there a control unit or something that I can adjust the boost level from inside the car or something? I'd like to get one to run a lower amount of boost now, then when my new engine is installed, I want to reinstall the supercharger with more boost. Is that how that works?

 

yes, you can adjust the boost by changing pullies. the range just means thats the intended useage range.

 

Ok thanks. And also, I just read a post on electronic boost controllers. What is the purpose of one of those? Can you actually adjust the psi with that alone, or do you also need other pullies? Sorry if I sound stupid but I don't know really anything about controlling the psi and all that.

 

those are mainly for turbo cars with adjustable wastegates. the wastegate bleeds off exhaust pressure, decreasing the amount of boost created. the controller allows you to adjust the wastegate from inside the car, in turn adjusting the amount of boost. not so easy to do with a supercharger.

 

92LT1RS is correct.

Supercharged cars can only change the boost level by changing pullies (for the most part). You can get a large pulley now for low boost, and then when you are ready for more boost, you can get a smaller pulley. As for which blower to run, most seem to end up at the D1SC, unless you are like a few of us on here that are boost crazy, then you might want to consider an F1 unit.

Turbos as mentioned have wastegates which allow the boost setting to be changed on the fly.

 

CALL911 - I've been eyeing the F-1 instead of the D-1 for the last few days, but can't find a whole lot of info on it as far as mounting goes. any chance it fits in the same bracket as the D-1?

 

Don't know for sure on that one. Although if I were to guess, I would say "yes" because I know the F-1 uses a lot of the same plumbing as the D-1 does.

PM Ponyhntr, he will know for sure as he works for ATI.

 

Yes, it does. You may need to clearance the block a little bit (nothing major). One problem though: If you have a stock shortblock, then you won't be able to get the boost low enough to run an F-series. It can barely be done with a D1SC.

 

hmm...I might have to do this then. although I'll be running TPI camaro bracketry, so I'm not sure how it would work with hood clearance, etc.

and this is most assuredly not a stock short block


just out of curiousity though, whats the lowest you can pulley an F-1 down to?

 

It all depends on the engine combination. And now that I know it's going on L98 bracketry, then as you say the hood becomes a problem. The blower will fit (it's the same diameter of a P1SC/D1SC), but if you need to run a big pulley on the blower that might get into the hood, but the only way to find out is to mock one up.

 

thats kind of what I figured. I was interested in the low boost figure more for trivia info than anything else though. I plan on running 12-15 lbs boost whenever I get everything together but I don't really plan on going over 15. at this point anyway might get the F-1 for future boost/speed addiction but so far I think I'm going to stick with the D-1. This is going to be a 383/Ai TFS engine, by the way.

 

I use a 7.65/4.5 pulley combo and I get 14psi at 6400rpm with my F1A. You could use a smaller crank pulley and get between 10-12 psi. The impellor on the F1A is a work of art and is way more efficient than my old P1SC. The internal step up ratio of 5.4 to 1 allows you to use bigger blower pulleys for less belt slip. I'm using an eight rib SDCE setup and I'm making 14psi with only 10lbs of tensioner pressure. The F1A has a max rpm of 72,000 which will allow you to make big boost. I don't know if it will fit on 3rd Gen though.

 

thanks for putting in your $.02 97WS6, I read some of your posts after doing some searching. with the amount of boost I plan to run for the foreseeable future I'm going to stick with the D-1 or -1SC for now. maybe later on I'll do the F-1 upgrade

 

If you plan to upgrade to the F-series in the future, make sure you go with a D1SC now. The F blower will not bolt up the the D-1 (oil-fed) bracketry.

 

well alrighty, just made my decision that much easier