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-   -   Cam and valvetrain longevity....??? low duration high lift... (https://www.offshoreonly.com/forums/general-q/341258-cam-valvetrain-longevity-low-duration-high-lift.html)

Raizorsedge 10-02-2016 03:46 PM


Originally Posted by MILD THUNDER (Post 4487273)
..specd for a 500efi with dart 325 heads. 237/239 ..

Hey that's my Bob cam! Now the million dollar question is if I should fire it up and run it? Or pull it? I think I know the answer to this one. The thing that frustrates me the most is... last year when I started my project build several people referred me to him. I've built several engines over the years and never once did I run in to so many issues.

jsand117 10-02-2016 03:50 PM

The RPM expected to run with those cams is 5800. I stressed many times on the phone with MK reliability was most important to me. Like most I don't have an open check book. The exhaust I am going to run is Gil dry.

getrdunn 10-02-2016 03:59 PM


Originally Posted by ICDEDPPL (Post 4487334)
Cam design is pretty easy at Marine Kinetics.


http://33outlaw.zenfolio.com/img/s9/...70702380-4.jpg

Dude you actually cracked me up. And here all this time we thought "what a big brain on Bob" and here he was just throwing darts and counting his money laughing at us. Wtf gentlemen.

Full Force 10-02-2016 04:00 PM

I stressed reliability also... And it's been a nightmare...

Originally Posted by jsand117 (Post 4487351)
The RPM expected to run with those cams is 5800. I stressed many times on the phone with MK reliability was most important to me. Like most I don't have an open check book. The exhaust I am going to run is Gil dry.


getrdunn 10-02-2016 04:04 PM


Originally Posted by Raizorsedge (Post 4487350)
Hey that's my Bob cam! Now the million dollar question is if I should fire it up and run it? Or pull it? I think I know the answer to this one. The thing that frustrates me the most is... last year when I started my project build several people referred me to him. I've built several engines over the years and never once did I run in to so many issues.

Honestly,,,, just take a look at tims and others. I wouldn't take a chance over 800.00 worth of cams. Next thing you'll be getting your cranks ground and new bearings and who knows what all else.

Full Force 10-02-2016 04:09 PM

Where RMBuilder been??? You would think he would defend himself?

getrdunn 10-02-2016 04:18 PM


Originally Posted by Full Force (Post 4487360)
Where RMBuilder been??? You would think he would defend himself?

Busy having a moving sale...

Raizorsedge 10-02-2016 04:57 PM


Originally Posted by getrdunn (Post 4487359)
Honestly,,,, just take a look at tims and others. I wouldn't take a chance over 800.00 worth of cams. Next thing you'll be getting your cranks ground and new bearings and who knows what all else.

I only have a single. The thing that sucks is I just put it in the boat and almost have it ready to fire. It's been a big project. I did a complete bilge makeover, the engine, full hydraulic steering, K planes, and a new drive. I really wanted to get it up and running and play around with this new Holley HP EFI system. Oh well, I guess it's it's just another speed bump in the never ending project lol!

SB 10-02-2016 05:07 PM

Pg 97. Near a Q&A record ?

Full Force 10-02-2016 05:12 PM

The bigger surprise is everyone's getting along this time lol

My build thread may be longer not sure... I make heated threads but man the leading is intense haha

Originally Posted by SB (Post 4487374)
Pg 97. Near a Q&A record ?



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