boost bleed off with cam?? excessive belt slip???
Jul 25, 2009 | 01:27 PM
#1
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On The Tree
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From: Medicine Hat, alberta, Canada
boost bleed off with cam?? excessive belt slip???
.591, .601 lift... 115 LSA...230/236 duration, I'm running a 122 on my 408 with 8.8:1 comp. 2.8 inch 6 rib pulley... max psi i'm seeing is 4.5 to 5 pounds.. what gives, it looks like my gauge is fluctuating a bit, i don't know whether its my mind telling me that it is or I just want to see it fluctuating.. be an easy fix for an 8 rib.. but if its the cam, then what?? any help
Jul 25, 2009 | 01:55 PM
#2
Joined: Apr 2004
Posts: 16,820
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From: In a van DOWN BY THE RIVER
A 115 shouldn't bleed off boost. I would check the pulleys for rubber, to see if it is slipping, or put a healthy tensioner on it. Why did you switch from turbo to blower??(curious)
Jul 25, 2009 | 07:54 PM
#4
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On The Tree
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From: Medicine Hat, alberta, Canada
no its not, another update this afternoon, I put a 3.4 pulley on.... and no boost! whatsoever.. WTF is goin on? is my low compression eating up all the boost the blower is putting out?
Jul 25, 2009 | 07:56 PM
#5
Joined: Apr 2004
Posts: 16,820
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From: In a van DOWN BY THE RIVER
DING DING I will say your spinning the crank pulley. That is a must if your running a blower... Do it now before you wipe out the snoute.. I didn't even think to ask that.. Take a look at it
Jul 25, 2009 | 08:36 PM
#7
A low compression 408 with a decent cam is allot of motor for a 122 maggie IMO. Now if you could spin it fast enough by using one with a jackshaft (Like the TBSS kits) then thats different.
