affects of degreeing a cam
affects of degreeing a cam did a little dyno testing with my cam today. originally put it in straight up. cam peaked a little soon. so, i retarded the cam 5* to make it 0*. (cam has 5* advance ground into it).
not a good thing to do. this just goes to show that you need to make sure it's installed correctly, or you can lose alot.
blue = straight up
red = retarded
not a good thing to do. this just goes to show that you need to make sure it's installed correctly, or you can lose alot.
blue = straight up
red = retarded
Last edited by mrr23; Nov 14, 2007 at 07:42 PM.
WOW!! Pretty dramatic difference. I wonder what it would have done 1 degree either way. When you say peaked early, b y how much? Saw your other post, didnt pay much attention to where it peaked.
https://ls1tech.com/forums/dynamometer-results-comparisons/812009-dyno-runs-408-a.html
cam is 232/240 117 LSA +5.
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"MAP reading was fluctuating at 94-95 kPa in the 6k range"
Yep, that is a problem. Restriction somewhere in the intake track. Air filter, air inlet to the throttle body or maybe the throttle body. Get that fixed and you will see a few more ponies.
Yep, that is a problem. Restriction somewhere in the intake track. Air filter, air inlet to the throttle body or maybe the throttle body. Get that fixed and you will see a few more ponies.
Yeah, it'll make a few more, keep it from dropping as much up top, but it wont make a big difference.
with the key on and engine not running the MAP reading is 101-102 kPA. so, i don't know if 7-8 kPa is going to change much.
i'm banking on the heads as being the restriction point for going past 6200 rpms. i knew they were going to restrict it some, but not this much.
i'm banking on the heads as being the restriction point for going past 6200 rpms. i knew they were going to restrict it some, but not this much.
