psycho1122
Pro
Posts: 1608
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posted June 07, 2005 07:17 AM
ANYBODY runing a 1270 w/ 105in./105ex. Cam Timing?
If anyone responds, I would like to obtain a Dyno Graph to determine the RPM power drop off point.
Also, do you happen to know your compression psi cold??
I am currently running 105 in / 100 ex. on my 1270 and my cold psi is 245 a hole. I would like to bleed off some pressure by retarding(?) the exhaust cam.
Thanks!
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Lorcan
Expert Class
Posts: 327
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posted June 07, 2005 09:56 AM
We are running 108/108 and +10 degrees duration on the cams with a little more lift. The bike hangs on to the power (197 SAE) til the limiter with no drop from 10,300 up. In theory closing up the centres will you give you more top end power but in practice it's more complicated than that and gas speeds and port sizes come into play. Our head is ported too, with stock valves.
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psycho1122
Pro
Posts: 1608
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posted June 09, 2005 06:39 AM
OK, Is anybody running STOCK cams with simular timing??
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You say PSYCHO like it's a BAD thing!!
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bossman12r
Zone Head
Posts: 513
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posted June 10, 2005 06:05 AM
Ryan Schnitz ran 105/105 on his 1270. I know of a couple of 1290's running 105/105.
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zx12girl
Pro
Adrenaline Junkie
Posts: 1740
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posted June 12, 2005 12:16 PM
 Edited By: zx12girl on 12 Jun 2005 15:43
We are running 105/105 on our 1270. Do not have a dyno graph but I do have a power commander map.
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