New build Keep A/C or? Lq9 Procharged

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Mar 29, 2015 | 11:01 PM

T/AWS6969

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From: Evans, Colorado

New build Keep A/C or? Lq9 Procharged

Ok i am going with a Procharged D1 Lq9 in my 2002 trans am 6m. shooting for 750-800 RWH. Anyone miss it? Trying to decide if i should get rid of it or try to keep it if i can. I will be going with the Cog system for the procharger. Btw i live in Colorado. thanks for any advise! I guess at this point maybe i am looking for an excuse to make this a bit easier..lol

Mar 30, 2015 | 06:26 AM

JRENIGAR

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From: 72396

Why a cog system and not the aster setup? Im assuming its a street car for the want of keeping the a/c. I thought the cog setups were more track oriented and not street friendly.

Mar 30, 2015 | 10:05 AM

slocaddy

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From: sarasota fl

My vehicals are broke down junk if the ac goes out. I just leave them on the side of the road to go to the scrap yard. Hope you find a way to retain the air, I drive with windows down in fl, most of the time, but sure is nice to have the option =)

Mar 30, 2015 | 10:10 AM

Rise of the Phoenix

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From: Jefferson City, MO

Go with the Aster bracket setup and keep AC. No reason you can't keep the AC on a Procharged setup.

Mar 30, 2015 | 12:08 PM

007FJ

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From: Texas Gulf Coast

I am putting AC back in the Formula with an F1C. No need to lose AC IMO. I even added a GZ Motorsports Vacuum pump. It can all go in there with some thinking.

Mar 30, 2015 | 01:05 PM

conan

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From: Back in the Burg

My A/C is gone. Took it out long before the Procharger went in to the car. Don't miss it, and I enjoy the extra room on the pass side of the engine bay. I also live in park city Utah 6,000 - 7,500 elevation so my summer time highs will hit low 90's for 1-2 weeks with 15-20% humidity. If I lived in the hot humid weather I might think twice about it.

Mar 30, 2015 | 02:52 PM

T/AWS6969

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From: Evans, Colorado

Thanks guys. I guess I am not familiar with the Aster bracket...I currently have a J bracket.

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Mar 30, 2015 | 04:15 PM

stmz28

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From: Bensalem Pa

I have a cog setup for sale that will work with a/c. You will just have to move your alt

https://ls1tech.com/forums/parts-cla...cog-drive.html

Mar 30, 2015 | 04:35 PM

#10

SPRAYED 01

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From: Northwest side of Chicago

Another keep the ac vote here.

Mar 30, 2015 | 09:35 PM

#11

007FJ

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From: Texas Gulf Coast

He does live in CO, I just noticed. AC optional.

Apr 1, 2015 | 08:07 AM

#12

Bob@BruteSpeed

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Quote:

Originally Posted by T/AWS6969

I guess I was kind of set on the cog system because Bob@brute speed recommended it awhile back...

I would not of recommended a cog system unless I was delirious at the time I talked to you, or misunderstood what you were doing. With a D-1SC you don't want to use a cog bracket anyway, as the bearings can't handle the added forces placed on them. If this is on a 4th gen F Body there is no need to use anything but the Aster bracket for your goal of 750 to 800 rwhp. Here is a link to it. http://shop.brutespeed.com/Aster-Aut...er-Bracket.htm If you're at a higher elevation you're going to need to go with an F-1A to make that kind of power. Bob

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Apr 1, 2015 | 11:38 AM

#13

The Alchemist

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I'm glad Bob chimed in, because 750-800 at higher elevation with a D1 is very ambitious, actually not very realistic.

I say keep the a/c for those times you need a defroster, and because there's no real need to remove it with a D1 procharger. It's not like you're trying to get a down pipe in that area with a turbo setup.

Apr 3, 2015 | 06:27 PM

#14

T/AWS6969

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From: Evans, Colorado

thanks guys! and Bob you are always around! lol..awesome! the aster bracket looks like the current one i have for my Trans AM that i bought about 5-6 years ago. Unless i am missing something..lol..which is possible. Yeah.. at my elevation i have been told to actually run at 10-1 compression and just see what that D1 can do. I will be getting a custom spec cam from Patrick G.

Apr 3, 2015 | 06:30 PM

#15

T/AWS6969

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From: Evans, Colorado

did some reading..lol. yeah that bracket is pretty sweet!

Apr 4, 2015 | 08:09 AM

#16

Bob@BruteSpeed

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Quote:

Originally Posted by T/AWS6969

Thanks. I have a feeling you'll be lucky to see 700 rwhp at your elevation with the D-1SC. The D-1SC has a 62,000 rpm limit, you're going to have to push it to it's limit. Bob

To determine the impeller speed, the following formula is used:

Maximum impeller speed = crankshaft pulley diameter (N1) divided by supercharger pulley diameter (N2),multiplied by the step-up ratio (4.10 for the P-series/D series - 5.40 for the F series), multiplied by engine rpm at redline.

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Apr 4, 2015 | 08:19 AM

#17

The Alchemist

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A spring loaded tensioner is the only way to run a supercharger, anything less and you're setting yourself up for failure.

Apr 9, 2015 | 12:11 PM

#18

ramairetransam

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From: Amsterdam Ny, the good part

Go with the aster bracket , its a spring loaded tensioner on the j bracket . I went from a 6 rib , which sucked , so the sdce tensioner setup . Thats an older tensioned setup and its the only way to go . If i was buying new i would go with the aster. Also cbm made a larger crank pulley. Which if you need to spin the procharger would also help alleviate belt slip .

Keep your ac . i love having ac. My 85 trans am i took it out so that it looked better for shows and i hated not having ac . It made me drive it less bc of it .