B6T 323 GTX Camshaft?
#22
My seat of the pants butt dyno measurements couldn’t tell much difference between the Miata 5 speed cam and a B6t cam. I got better spool by putting a 1.6 automatic cam on the exhaust however which has less lift and less duration.
Bob
#24
Im running a b6t intake cam and miata exhaust cam in my b6t. Picked up 10hp on the dyno. I ran all of the stock cam specs through dyno sim and that was the best setup. Heres the dyno vid. http://www.streetfire.net/video/turb...yno_156375.htm
#25
Im running a b6t intake cam and miata exhaust cam in my b6t. Picked up 10hp on the dyno. I ran all of the stock cam specs through dyno sim and that was the best setup. Heres the dyno vid. http://www.streetfire.net/video/turb...yno_156375.htm
Bob
#26
Spreadsheet where I measured 1.6L cams lift at the valve using a dial indicator and a degree wheel. The 207 was a Webbcam grind number.
Actually the automatic exhaust cam has the same lift with less duration both opening and closing were in-between the other cams. Seat of the pants without a dyno I couldn’t tell the difference between the B6t and the 5 speed miata cams. The auto exhaust cam spooled the turbo better and seemed to make more mid range probably at the expense of peak power.
Bob
Actually the automatic exhaust cam has the same lift with less duration both opening and closing were in-between the other cams. Seat of the pants without a dyno I couldn’t tell the difference between the B6t and the 5 speed miata cams. The auto exhaust cam spooled the turbo better and seemed to make more mid range probably at the expense of peak power.
Bob
#27
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I had a buddy that fit an auto motor with his greddy kit, spooled faster had better peak tq than most greddy kits but had crap for top-end.
10psi IIRC
10psi IIRC
Last edited by Braineack; 10-22-2012 at 11:44 AM.
#29
With the auto cams it is not so much the less overlap it is the reduced duration I think and especially the reduction in lift on the intake cam. run the auto exhaust cam only with the 5 speed intake cam and you get much of the added spool benefit and less of the top end hit was my butt dyno impression.
The auto was tuned for mid range because the transmission tries to keep you there all the time preventing you from having fun.
Bob
The auto was tuned for mid range because the transmission tries to keep you there all the time preventing you from having fun.
Bob