....... na
Something ain't right......
Thread Starter
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Ultimate HDF Member
Joined: Mar 2007
Posts: 7,465
Likes: 15
From: Corona, Ca
Something ain't right......
Back in sept 2012 I dyno'd my 96" with woods tw6-6 cams ness big sucker and d&d fatcat (std baffle) the results were 93hp/98tq.
I thought these numbers were fantastic for just cams pipes etc
Since then I've added a revolution cycles 106 big bore kit and minor headwork done by wink eller.
today I finally had my bike dyno tuned. The results to say the least were disappointing.
95hp/105tq
Idk what went wrong these numbers are way too low.
.
I thought these numbers were fantastic for just cams pipes etc
Since then I've added a revolution cycles 106 big bore kit and minor headwork done by wink eller.
today I finally had my bike dyno tuned. The results to say the least were disappointing.
95hp/105tq
Idk what went wrong these numbers are way too low.
.
Last edited by 07bobber; Apr 16, 2014 at 04:37 PM.
Road Warrior
Joined: May 2007
Posts: 1,620
Likes: 117
From: ARIZONA
What was the compression ratio on the pistons installed with the kit? Also, headwork to the combustion chamber will lower the compression ratio futher. If just porting the runners, shouldn't affect it. Ive talked to Fuelmoto about cams an ALOT of the woods cams beyond the Tw-222 and Tw-555 NEED higher compression to get the most benefit of the cams. 10.5:1 was the ratio that seemed to be most relevant.
Thread Starter
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Ultimate HDF Member
Joined: Mar 2007
Posts: 7,465
Likes: 15
From: Corona, Ca
What was the compression ratio on the pistons installed with the kit? Also, headwork to the combustion chamber will lower the compression ratio futher. If just porting the runners, shouldn't affect it. Ive talked to Fuelmoto about cams an ALOT of the woods cams beyond the Tw-222 and Tw-555 NEED higher compression to get the most benefit of the cams. 10.5:1 was the ratio that seemed to be most relevant.
Thread Starter
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Ultimate HDF Member
Joined: Mar 2007
Posts: 7,465
Likes: 15
From: Corona, Ca
Yes the dyno was done by the same shop, the dyno sheet says correction is STD
Extreme HDF Member
Joined: Sep 2006
Posts: 10,114
Likes: 29
From: Vancouver B.C. Canada
Sorry to hear that. Yeah, you are right, not impressive at all. With headwork, you got to pass the 100 mark.
That's why I like to get parts from one developer, at least they know what a good combination is. I don't know what else to say
That's why I like to get parts from one developer, at least they know what a good combination is. I don't know what else to say
Back in sept 2012 I dyno'd my 96" with woods tw6-6 cams ness big sucker and d&d fatcat (std baffle) the results were 93hp/98tq.
I thought these numbers were fantastic for just cams pipes etc
Since then I've added a revolution cycles 106 big bore kit and minor headwork done by wink eller.
today I finally had my bike dyno tuned. The results to say the least were disappointing.
95hp/105tq
Idk what went wrong these numbers are way too low.
I thought these numbers were fantastic for just cams pipes etc
Since then I've added a revolution cycles 106 big bore kit and minor headwork done by wink eller.
today I finally had my bike dyno tuned. The results to say the least were disappointing.
95hp/105tq
Idk what went wrong these numbers are way too low.
Tourer
Joined: Jul 2013
Posts: 426
Likes: 1
From: CT, USA
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Ultimate HDF Member
Joined: Mar 2007
Posts: 7,465
Likes: 15
From: Corona, Ca
So I talked to the mfr of the big bore kit, and he thinks the kit either isn't broke in all the way (BS imo) or because the springs in the heads are robbing power because the were set up to run up to .600 lift.
Im gonna tear down the motor after Laughlin...
Im gonna tear down the motor after Laughlin...
Last edited by 07bobber; Apr 16, 2014 at 02:30 PM.
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Elite HDF Member
Joined: Sep 2012
Posts: 3,791
Likes: 57
From: N Texas
Yeah I don't buy either of those either. Have you calculated the compression ratio using the Big Boyz Calculator? You will need deck height and other info. Most stock deck heights are around .008" in the hole and if you add a .040" head gasket then the quench is getting too big. A .030" or .027" should help you get the compression up - let me know if you need some .027" Cometic hgs.
Thread Starter
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Ultimate HDF Member
Joined: Mar 2007
Posts: 7,465
Likes: 15
From: Corona, Ca
Yeah I don't buy either of those either. Have you calculated the compression ratio using the Big Boyz Calculator? You will need deck height and other info. Most stock deck heights are around .008" in the hole and if you add a .040" head gasket then the quench is getting too big. A .030" or .027" should help you get the compression up - let me know if you need some .027" Cometic hgs.
I checked deck height and it was around .010
once I get her apart im gonna recheck everything and ill get back at you for gaskets, I might as well get the heads decked while im at it...
Last edited by 07bobber; Apr 16, 2014 at 04:19 PM.