Off the shelf Cam- Dyno results
06-22-2016 | 08:29 AM
#61
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Joined: Jul 2004
Posts: 11,332
Likes: 73
From: chicago
I'm STILL trying to figure out how Bob could design a cam that is "spot on" for my build but "miss" on yours.... 
.. I keep wondering if there's something else going on we're not catching.. (ie: cam timing, rocker geometry. etc..)
I DO have 15 cubic inches on you (555 cid) but I think about a full point less compression (I'm at 8.6:1)
I believe we have the same heads.... AFR 325 cnc..
My cam is a bit smaller .644 in .629 ex. Lift. Duration 239 in 246 ex @ .050 as it's spec'd for a blower
and we made about the same power N/A.... I dyno'd mine wet with Eddie Marine exhaust...
Maybe it's because I essentially built my engine in my living room, and as ya'll say, the cam was designed at a kitchen table.. LOL
P.S. Congrats to the O/P on an awesome build
.. I keep wondering if there's something else going on we're not catching.. (ie: cam timing, rocker geometry. etc..)
I DO have 15 cubic inches on you (555 cid) but I think about a full point less compression (I'm at 8.6:1)
I believe we have the same heads.... AFR 325 cnc..
My cam is a bit smaller .644 in .629 ex. Lift. Duration 239 in 246 ex @ .050 as it's spec'd for a blower
and we made about the same power N/A.... I dyno'd mine wet with Eddie Marine exhaust...
Maybe it's because I essentially built my engine in my living room, and as ya'll say, the cam was designed at a kitchen table.. LOL
P.S. Congrats to the O/P on an awesome build
06-22-2016 | 09:14 AM
#62
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Joined: Oct 2013
Posts: 1,953
Likes: 2
From: rock Island wa
MMb thinks no one can make any power with an off the shelf cam 
.(most of the Bob builders can`t pull out his cams fast enough and make more power)
Not all Butt Hurt bobby thou, Jones came up with some tiny cam for me too. It would have worked great in a ski boat I`m sure, I`ll stick with my 651.
Trash day is wednesday if anyone is driving by...
.(most of the Bob builders can`t pull out his cams fast enough and make more power)Not all Butt Hurt bobby thou, Jones came up with some tiny cam for me too. It would have worked great in a ski boat I`m sure, I`ll stick with my 651.
Trash day is wednesday if anyone is driving by...
time for some new videos of the builds. you and joe on the water yet?
06-22-2016 | 09:42 AM
#63
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Joined: Nov 2004
Posts: 922
Likes: 54
From: Lago Vista TX
06-22-2016 | 01:01 PM
#64
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Joined: Oct 2005
Posts: 11,692
Likes: 217
From: Olmsted Falls,Ohio Marblehead,Oh
Nothing being hidden, I can post every last detail down to every single clearance, ring gap, tq specs, chain clearances, cams degreed, compression specs, dyno proven identical to each other, yep it's my fault....
. Every detail was logged... Plain and simple he didn't do a good job on my builds...
. Every detail was logged... Plain and simple he didn't do a good job on my builds...
I'm STILL trying to figure out how Bob could design a cam that is "spot on" for my build but "miss" on yours....
.. I keep wondering if there's something else going on we're not catching.. (ie: cam timing, rocker geometry. etc..)
I DO have 15 cubic inches on you (555 cid) but I think about a full point less compression (I'm at 8.6:1)
I believe we have the same heads.... AFR 325 cnc..
My cam is a bit smaller .644 in .629 ex. Lift. Duration 239 in 246 ex @ .050 as it's spec'd for a blower
and we made about the same power N/A.... I dyno'd mine wet with Eddie Marine exhaust...
Maybe it's because I essentially built my engine in my living room, and as ya'll say, the cam was designed at a kitchen table.. LOL
P.S. Congrats to the O/P on an awesome build
.. I keep wondering if there's something else going on we're not catching.. (ie: cam timing, rocker geometry. etc..)
I DO have 15 cubic inches on you (555 cid) but I think about a full point less compression (I'm at 8.6:1)
I believe we have the same heads.... AFR 325 cnc..
My cam is a bit smaller .644 in .629 ex. Lift. Duration 239 in 246 ex @ .050 as it's spec'd for a blower
and we made about the same power N/A.... I dyno'd mine wet with Eddie Marine exhaust...
Maybe it's because I essentially built my engine in my living room, and as ya'll say, the cam was designed at a kitchen table.. LOL
P.S. Congrats to the O/P on an awesome build
Last edited by Full Force; 06-22-2016 at 01:12 PM.
06-22-2016 | 01:26 PM
#66
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Joined: Nov 2004
Posts: 922
Likes: 54
From: Lago Vista TX
Nothing being hidden, I can post every last detail down to every single clearance, ring gap, tq specs, chain clearances, cams degreed, compression specs, dyno proven identical to each other, yep it's my fault....
. Every detail was logged... Plain and simple he didn't do a good job on my builds...
. Every detail was logged... Plain and simple he didn't do a good job on my builds...
Was just thinking possibly something mechanical going on could be causing it to not pull on the top end...
Maybe his aim was just better when he spec'd mine.. (wait, wrong cam guy
)
Last edited by Boatally Insane; 06-22-2016 at 01:36 PM.
06-22-2016 | 01:37 PM
#67
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Joined: Oct 2005
Posts: 11,692
Likes: 217
From: Olmsted Falls,Ohio Marblehead,Oh
Not sure when both are identical or within 3 hp on dyno, same day... Same setup and through marine exhaust also...
06-22-2016 | 01:37 PM
#68
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Joined: Jul 2004
Posts: 11,332
Likes: 73
From: chicago
How much did yours make without the blower?
06-22-2016 | 01:39 PM
#69
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Posts: 14,154
Likes: 3,714
From: On A Dirt Floor
And it appears this thread was when full force decided to go that way.
Was this same cam, or close, to what was sold to MER ?
06-22-2016 | 01:39 PM
#70
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Joined: Aug 2006
Posts: 460
Likes: 17
From: Missouri
[/QUOTE]Pretty much the same, just my WFO is not all that impressive yet.
I plan on bypassing, or removing the water box. It has to kill some hp.
I did add a touch of rocker to the bottom thinking I somehow I was going to get to the magical 53 mph. Did gain 1mph
I started at a very disappointing 39 mph, with a list of WTF reasons why? now at 44
Now back to Cam talk
