Off the shelf Cam- Dyno results
06-20-2016, 05:44 PM
#52
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So, explain to me why I'm slower after listening and buying parts from Bob? he was HIGHLY recommended and I got screwed, I wish more guys came out with storys like I did before I used him...all the heat I took was WELL worth it... I mean the engines are built within 3 hp and .3 tq of each other dynoed on the same day... And those results SUCKED, all hate and BS aside, bob failed horribly at my target goals, I could have went to summit saved hassle and time with much better results...
Last edited by Full Force; 06-20-2016 at 09:19 PM.
06-21-2016, 03:04 PM
#53
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I agree also on the exhuast. It's still a cruiser, so lots of idle time[/QUOTE]...you've obviously never ridden with me! Lol! Idle -docking and no wake zones only 
06-21-2016, 07:56 PM
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So, explain to me why I'm slower after listening and buying parts from Bob? he was HIGHLY recommended and I got screwed, I wish more guys came out with storys like I did before I used him...all the heat I took was WELL worth it... I mean the engines are built within 3 hp and .3 tq of each other dynoed on the same day... And those results SUCKED, all hate and BS aside, bob failed horribly at my target goals, I could have went to summit saved hassle and time with much better results...
I've heard of similar experiences which are very unfortunate. Not long ago I heard of a fellow OSO member losing like 6-8 mph in a boat with some 565's or possibly even bigger. I thought he had went from the 651 cams to custom grinds with a lot of upsells from MK. I heard this 2nd hand but from a pretty reliable source. It's understandable to a point that not all can be spot on however it's how it's handled moving forward is key.
I pride myself in custom cam grinds as well as shelf cams. More so shelf cams. There's a lot of R@D out there with multiple shelf cam choices. Making them perform with the proper components is key obviously. i had a lot of great success and few I had to pull over the years. Certainly not afraid to share with others.
I think Bob has a lot of great builds out there as well as feedback. Unfortunately sometimes some simply fail for what ever reason. Just hope for his sake the mistakes are not from incorrect information coming From engine builder.
Not implying that at all here just getting it out there.
06-22-2016, 12:09 AM
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.(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...
06-22-2016, 04:56 AM
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I think Bob has a lot of great builds out there as well as feedback. Unfortunately sometimes some simply fail for what ever reason. Just hope for his sake the mistakes are not from incorrect information coming From engine builder.
Not implying that at all here just getting it out there.
it's over now, engines run great and I am boating, however to spend 35,000 and go slower sure still hurts...
06-22-2016, 07:32 AM
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In my case I am the builder, I used Bob because he was recommended to "design" my heads, cam, and valvetrain combo...I got a weak recipe and one for potential disaster. lifter to bore clearance advice I asked about was off, and the "custom made for me and marine use" heads were not made custom at all, just had Inconel valves... he bashed me to others behind the scenes and also guys said "any engine builder should know better" well I am not a builder by trade and Bob knew that, he should have made some different choices in advice knowing that....
it's over now, engines run great and I am boating, however to spend 35,000 and go slower sure still hurts...
it's over now, engines run great and I am boating, however to spend 35,000 and go slower sure still hurts...
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
Last edited by Boatally Insane; 06-22-2016 at 08:24 AM.
