i was talking with the guys are harrop who make the tvs system. its a 1.3 liter blower and comes with a 80 mil pulley. i would suggest talking to them in a e-mail. i gave them the wrong e-mail by mistake and they were unable e-mail me back. so they actually called me and answered my questions right on the phone, and also sent me a e-mail with a bunch of info in it. if you like i can send that e-mail to you

PS: blower comes in black or polished, i believe the polish version is 250 extra.

 

1.32l to be correct hence the tvs/htv 1320 name

 

right. i just wasn't sure if you mean a cai or a new mani. all i've got so far is the cai, but i'll get the injectors and exhaust and stuff. i thought the tvs was supposed to run cooler than the m62 though. i read that on the harrop site.

 

to a point yes, but it also moves so much more air making so much more pressure. so yes it is more efficent and everything but there are limitations to what it can do.

 

the car should be able to handle it though as long as i add the list of supporting mods you gave right? what about tuning? what do you suggest on that?

 

Primer:
centrifugal superchargers are not positive displacement (see roots type-sit on top of the intake manifold). The difference is that with a roots you'll get boost at low rpms while centrifugal you won't. The trade off is in efficiency. Centrifugals are somewhat more efficient than roots and generate less heat, most are externally oil cooled using an oil cooler with fins ala heat exchanger or intercooler (but smaller). They are driven by pulley as well meaning they are parasitic but since you generate less heat and could run the charge through an external intercooler prior to reaching the manifold the intake charge could be cooler.

On some vortech superchargers you can run upto 26 psi of boost which is significantly more than you'll get out of the eaton. But...you'll have turbo-esque lag (but less). To make it work on a lsj you'll need to fabricate a mounting bracket that's strong enough to support the supercharger. Theoretically you could attach a bracket to the engine mount and run it back to front with the remainder of the drive pulleys (at least on a redline...clearances would be an issue with a cobalt). The vortech actually uses engine oil to lubricate itself; whereas others have external systems.

Having said that...if I had the money I'd test out a vortech on my lsj but I don't have the money.

 

so do youy increase horsepower when you swap superchargers or can it just handle more?

 

Its all about how much air the SC moves and how efficient it is at doing it. Also depends on how much power its robbing as well. You cant just say if you put THIS sc on my car it will work better.

They already proved the Procharger SC1 and SC2 are too small for our cars. Yes they move 1000cfm and 1100cfm of air, but it just doesnt produce the power we all expected. The compression is too low on the LSJ @ 9.5:1. The results were on the 2.5" pulley that it made just about 300whp. With the 2.4 intake manifold it made 24psi i believe? When it was swapped over to the 2.4 engine w/ LSJ head, it performed much better. But still not the 350-400whp machine we thought.

Honestly from what chevytech has done, the Procharger SC1 or SC2 centri blowers were not worth the performance for the money. Thats why people are saying go with the TVS/HTV 1320 roots blower. Its pretty amazing and its a direct swap for you guys. I would be putting one of those on my car if it wasnt a complete change in platform.

TVS > Centri blowers as of right now in a cost vs performance aspect.

 

for the procharger honestly the 2.4 is the best platform.. higher compression and more displacement help big time.. on the 2.0 it made about 260 hp on 12 psi but it was never dyno'd after that on a good tune..

chevy said after he swaped to the frankenmotor it seemed like it was good for about 320 or so Hp

the issue is for our cars to take full advantage of the power of the blower it'd need to crank up to 8K rpms and have ported head .. frankly cams and a ported head would do wonders for a procharger..

2.2 ecos have done some great things with vortech blowers.. i think part of the issue is really the low compression and the small bore.. a rotrex SC would probably be a better setup for you as jackson sc/s have had some great results on small engines .. I was going to test a rotrex but i didn't know enough info lol annd I woung up getting matts procharger setup for a great deal.. also rotrex is cheaper then procharger and uses turbo compressor housings so you'll get pretty good results

 

Dude is that **** up and running yet?

 

no i need someone to tune it.. paul is supposed to but idk whats going on.. thats the only hang up right now.. i was hoping to get it done before the end of september.. now i'm shooting before oct 18 because there's a dyno day then and an m62 2.4 is going to be there.. so it would be a great place to do a same day same dyno comparison

 

Nice, good to hear its coming along well. Hope you find someone to tune it. I cant wait to see the numbers. I should have numbers by that time as well. you better put down more then me with that thing

 

hey man.. sign on aim.. so we can stop cluttering up the thread