5oo Hp 7 Psi Too Much
01-17-2006 | 01:08 PM
#11
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Joined: Jan 2005
Posts: 185
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Re: 5oo Hp 7 Psi Too Much
Yup, Griff got it. JcPerf made a funny 
As to how much overdrive chad can handle, the only way to know is to put an IAT sensor in and monitor knock as well. The lack of an intercooler concerns me when you start speeding up a roots blower 
As to how much overdrive chad can handle, the only way to know is to put an IAT sensor in and monitor knock as well. The lack of an intercooler concerns me when you start speeding up a roots blower
01-17-2006 | 04:53 PM
#12
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Joined: Jul 2004
Posts: 151
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Re: 5oo Hp 7 Psi Too Much
chad,
im running twin hp500 efi long blocks with 420 mega blowers and nickerson/holley 750s with 5 lbs boost, it is very dependable and reliable at 5lbs . when i first put it together last year i had the pulleys switched and it made 8-9 lbs boost and i had too much timing and i had to put head gaskets on it after the first time out on one motor and eventually the second motor . i put the felpro hp marine gaskets on it after that i put 30 hrs onit and it runs great. i cant afford to break it so im leaveing it at 5lbs
kevin
ps what size pulleys do you have on your 420 , you could change a tooth and get up to 5lbs
im running twin hp500 efi long blocks with 420 mega blowers and nickerson/holley 750s with 5 lbs boost, it is very dependable and reliable at 5lbs . when i first put it together last year i had the pulleys switched and it made 8-9 lbs boost and i had too much timing and i had to put head gaskets on it after the first time out on one motor and eventually the second motor . i put the felpro hp marine gaskets on it after that i put 30 hrs onit and it runs great. i cant afford to break it so im leaveing it at 5lbs
kevin
ps what size pulleys do you have on your 420 , you could change a tooth and get up to 5lbs
01-17-2006 | 04:55 PM
#13
Gold Member
Joined: May 2004
Posts: 5,762
Likes: 1
Re: 5oo Hp 7 Psi Too Much
Originally Posted by chad1
Stock 500 Hps B&m 420 Mega Blowers 93 Octane..can This Setup Handle 7psi . Go From 4 To 7 By Reversing The Pullys.. No Inercooler...
01-17-2006 | 04:58 PM
#14
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Joined: Feb 2002
Posts: 6,656
Likes: 20
From: Lake Michigan
Re: 5oo Hp 7 Psi Too Much
5psi would be the most I would run...I know of someone running 8-71's at 6-7psi on their 540 BullDogs, and they have been replacing head gaskets almost every mid to end of each summer.
01-17-2006 | 05:52 PM
#15
Rob
Joined: Aug 2001
Posts: 21,637
Likes: 12
From: Ms
Re: 5oo Hp 7 Psi Too Much
Like there saying with no innercooler becarefull.
On my Whipple 500efi I have been running it at 10lbs boost for the last 5 hours .7 all summer
On my Whipple 500efi I have been running it at 10lbs boost for the last 5 hours .7 all summer
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The Only Time You Have To Much Ammo Is When Your Swimming Or On Fire.
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The Only Time You Have To Much Ammo Is When Your Swimming Or On Fire.
01-17-2006 | 07:56 PM
#16
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From: Long Island,New York
Re: 5oo Hp 7 Psi Too Much
Originally Posted by Strip Poker 388
Like there saying with no innercooler becarefull.
On my Whipple 500efi I have been running it at 10lbs boost for the last 5 hours and Drunk all summer
On my Whipple 500efi I have been running it at 10lbs boost for the last 5 hours and Drunk all summer
