Supercharger AND nitrous??
Thread Starter
Melting Slicks
Joined: May 2004
Posts: 2,524
Likes: 10
From: Lufkin Texas
St. Jude Donor '05-'06
Supercharger AND nitrous??
Anybody doing this?? If so what SC and where to get and how much?? I already have the n20.
Is both asking too much of the L98?
TIA,
Dave
Is both asking too much of the L98?
TIA,
Dave
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Joined: Apr 2004
Posts: 4,532
Likes: 7
From: Lahaina Hi
Dave your engine compression is to high to really get the boost you want.
The most you could go I think would be 4 lbs.
Then to add the nitrous,bottom end would not handle it.
But all you need is forged crank ,pistons and H-Beam rods.
Pistons would have to be around 8.5 to 1 for the SC.
You would have to change to a nitrous or supercharger cam both are about the same 12 deg off center and about 540 lift and 232 duration that is at about 50 degrees.
I would get a Gayle Banks short block and turbo it.
With a SC the pully's and crank shaft key always shear off.
The most you could go I think would be 4 lbs.
Then to add the nitrous,bottom end would not handle it.
But all you need is forged crank ,pistons and H-Beam rods.
Pistons would have to be around 8.5 to 1 for the SC.
You would have to change to a nitrous or supercharger cam both are about the same 12 deg off center and about 540 lift and 232 duration that is at about 50 degrees.
I would get a Gayle Banks short block and turbo it.
With a SC the pully's and crank shaft key always shear off.
Thread Starter
Melting Slicks
Joined: May 2004
Posts: 2,524
Likes: 10
From: Lufkin Texas
St. Jude Donor '05-'06
Thanks John, I kind of figured as much. I guess if I want to get serious I need to bite the bullet and spend some cash. But then I wont have the fuel economy I enjoy on the highway away from the track. Which is why I went with nitrous in the first place. Guess I need to just quit being lazy and do some work so I can spray larger shots safely.
I've also been lurking in that rear mounted turbo thread
. Pretty interesting.
I've also been lurking in that rear mounted turbo thread
. Pretty interesting.
Drifting
Joined: Feb 2002
Posts: 1,937
Likes: 2
From: Arvada CO
been there done that! love it!
lol
my stock L98 was running 150shot w/6psi of boost! it handled it but not for long! it handled the 150shot all day long but with the blower and stock CPU it was not liking that to much! broke all the ring lands on all the pistons and broke my crank. But it was allot of fun! but remember i am 6000feet above sea level!
lol
my stock L98 was running 150shot w/6psi of boost! it handled it but not for long! it handled the 150shot all day long but with the blower and stock CPU it was not liking that to much! broke all the ring lands on all the pistons and broke my crank. But it was allot of fun! but remember i am 6000feet above sea level!
Instructor
Joined: Oct 2004
Posts: 247
Likes: 0
From: Montanja Noord Aruba
Well, i'm running a sc/n2o injected 377 cid with 9:1c/r for almost 2 1/2 year already. The most that i got from my engine is 641 rwhp and 79x lbs of torque. My main problem 'was' belt slippage. During the 644 rwhp pull, saw about 4psi at 4000rpm and 1 to 0 psi at 5500-6000rpm. I just got a cog belt setup installed (thanks to Bruce) and depends how much boost i'll get i'll deternmine how much juice she will get. You have to have everything forged and ARP hardware and she will take it. It worked for me...
Safety Car
Joined: Apr 2004
Posts: 4,532
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From: Lahaina Hi
I have looked at that too.
I am not sure the turbo would last.
I have worked on turbos years ago and the oil to the turbo is alway's
a problem.
Also I have heard that the return pump for the oil from the turbo has not been that great.
I am not sure the turbo would last.
I have worked on turbos years ago and the oil to the turbo is alway's
a problem.
Also I have heard that the return pump for the oil from the turbo has not been that great.
Safety Car
Joined: Apr 2001
Posts: 3,525
Likes: 2
From: Houston TX
Originally Posted by dr.juice
Well, i'm running a sc/n2o injected 377 cid with 9:1c/r for almost 2 1/2 year already. The most that i got from my engine is 641 rwhp and 79x lbs of torque. My main problem 'was' belt slippage. During the 644 rwhp pull, saw about 4psi at 4000rpm and 1 to 0 psi at 5500-6000rpm. I just got a cog belt setup installed (thanks to Bruce) and depends how much boost i'll get i'll deternmine how much juice she will get. You have to have everything forged and ARP hardware and she will take it. It worked for me...
641 RWHP is an aweful lot from a 377ci with 9:1 scr and 1 psi (or less) boost. How much spray are you running?
Aaron
Melting Slicks
Joined: Mar 1999
Posts: 2,535
Likes: 2
From: Rochester NY
Dr. Juice spray 200hp last time we talk when he asks about buying my cog setup. Hey Ed, I can garrantee you if you spray 200hp shot on the newly installed cog setup with about 18psi that can result in 850+rwhp.
ps. FYI. The cog setup on the dyno, it is bossting 7psi at 3100rpm, 4000rpm got 12psi and 4600rpm got 14.2psi push thru the ATI IC. At 6500rpm will certainly get you 18psi.
Bruce
ps. FYI. The cog setup on the dyno, it is bossting 7psi at 3100rpm, 4000rpm got 12psi and 4600rpm got 14.2psi push thru the ATI IC. At 6500rpm will certainly get you 18psi.
Bruce
Last edited by Bruce; Mar 31, 2005 at 07:59 AM.
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Safety Car
Joined: Apr 2001
Posts: 3,525
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From: Houston TX
740FWHP less 200 shot juice leaves 540FWHP NA. That's 1.43HP/ci on a 9:1SCR motor. It must be one heck of a build!
I would agree that if Juice is putting 644RWHP with basically no boost, then with 16psi, he should be able to in effect double the RWHP. Let's get that cog on there and see the 1250 RWHP beast (540 RWHP NA *2 +200HP shot). I would like to see video of this, as I know how a straight axle 1000 RWHP (actually 988, the tires were moving around a bit and the dyno operator didn't want to continue) vette sounds, and I would bet that 1300 RWHP on the dyno would be absolutely brutal!
Aaron
I would agree that if Juice is putting 644RWHP with basically no boost, then with 16psi, he should be able to in effect double the RWHP. Let's get that cog on there and see the 1250 RWHP beast (540 RWHP NA *2 +200HP shot). I would like to see video of this, as I know how a straight axle 1000 RWHP (actually 988, the tires were moving around a bit and the dyno operator didn't want to continue) vette sounds, and I would bet that 1300 RWHP on the dyno would be absolutely brutal!
Aaron
Melting Slicks
Joined: Sep 2000
Posts: 3,150
Likes: 1
From: Carlsbad, CA CA
Originally Posted by AKS Racing
740FWHP less 200 shot juice leaves 540FWHP NA. That's 1.43HP/ci on a 9:1SCR motor. It must be one heck of a build!
Aaron
Aaron
