Have anyone used this supercharger before?
http://www.rpmoutlet.com/aticorvettet.htm
Randy

 

That is just a reseller for the ATI Procharger.... lots of threads on them here. I just bought a kit from a fellow forum member, not for my year but I'm going to make it fit anyway. Helps to be handy with metal & tools.

 

Yeah it's just a plain ATI Procharger kit.. I don't like prochargers though as they are waaay loud at idle even...

 

I was often asked by people.... "What is that sound like a dentist drill under the hood ?" even with my Vortech. I agree the Prochargers are louder at idle....

Mo

 

Hmmm... that is NOT encouraging. Is it just the cut of the gears or something else that makes the ATI so noisy?

 

my understanding is yes i's the cut of the gearsi also think the intercooler might put the S/C close to the surge lin as well...

Mo

 

Mo,

Please discuss the surge line relationship to the intercooler. I'm setting up my own design for the air plumbing & can put that where it would be best, not where ATI may have.

Thanks!

 

The problem with making statements such as "ProChargers are loud/noisy", is that all of the models get lumped into the same category. I will agree that the old P-600B models (as well as the P1SCs) tend to be quite noisy because of the cut of the gears in the transfer section. From my experience, if, like most, you step to the D1, it tends to be more quiet than the Vortech units. I like the noise level of the larger ProChargers and the Votech units.

I run a D1R on my '87 and it is even more quiet than the old D1. Nothing like the P-600B!

The blow off valve has nothing to do with the noise that is being heard from the ProCharger kits. If there were something in its way, or the valve design was different that that supplied by ATI, I might understand that, but as supplied, the unit works well.

Aaron

 

Hi Aaron,

I just happen to have a D1 that I'm installing but still. I have a LOT to learn on this install process and would appreciate some insight on the blow off valve. Mainly, is there a better location for it. After the IC seems to be what I've seen, but does it function better closer or further from the throttle body?

Thanks!

 

Aaron
I agree with you as the gear cut contributed to alot of the "noise"... and the various things the various releases...

At one time before I went to the water injection I installed a ATI inercooler. What I found the most was that once it was installed the Vortech was much whining much louder at idle, I was contributing it to the 1.5- 2 pound drop through the intercooler pushing the vortech closer to the surge line.... (?)

Trog, there is an excellent book on designing and installing superchargers and intercoolers "Supercharged " - by Corky Bell

Mo

 

Mo,
I would agree that the more load that is placed on the SC pushing it closer to the surge line, the more noise would increase. If you were to run a SC at max efficiency, then place a reducer in the line (albeit IC, reduced piping size, components, etc.), then the load on the compressor increases, and as such, the noise from said compressor may increase. Though to be clear, the deign of the gears themselves contributes to a lot of the noise.

Trog,
The job of the blow off valve is to protect the compressor from reverse airflow pulses when the throttle slams shut quickly. For this reason, I like to place the BO valve in the piping between the compressor and the IC. The placement is a bit more tricky when you start using alcohol injection. Due to the fact that there is some amount of reversion in all of the systems as the operating parameters change (on/off throttle), the BO valve needs to be far enough away such that alcohol rich vapors are not released from this valve. If these vapors are released in the engine compartment, the spark is typically easy enough to find, and could result in a disaster. Another key item is that the BO valve must be placed prior to the air meter on those cars equiped with a MAF. SD cars can be exhausted anywhere prior to the TB.

Best of luck in your redesign.
Aaron

 

I have a prochager that damaged my LT4 engine after the first two FMU's were defective. I want to run it on my 86 L98, but I want to tune it with an ecm, not a FMU. Wat ecm would work? Do you know which ECM was used on the Callaway twin turbos? I have a wide band o2 sensor to guard against going too lean. Thanks

 

thanks for the feedback, always appreciated. I'm looking more seriously now at going blowerworks gaseous instead of the IC.

Read his site, emailed & talked w/ Greg & on top of info here my knowledge base is coming along quickly!

Thanks everyone!

 

TRog,

It was the best niverstment I made going with Greg's Gaseous System...

Mo

 

I thought your 8 rib was

 

Shhh...dun tell Greg...