Kinda similar to 731 cam. Like real close. Regardless looks like the ramp rate is a little less than tims but probably real close to others with the 241/246-660 lift cams that seem to be very common from Bob. Basically yours appear to be a junior version. I'd be most concerned with the cores and hardening process.

So nice to get PM's saying that my name and board have been dragged into this. Too bad I have never ever suggested that anyone buy a custom cam, and did not even use one in my own boat.

But I am glad to see that as much as you hate Boatfreaks that you keep trying to join. strange, you lied on the registration as I don't think your claim of being from NY is correct.

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Dragged into this?? You always magically appeared when cams and Bob were mentioned but now that it doesn`t fit your narrative it`s a big bother. ok I see how that works.
Stop being a Nazi and banning people. Next time I`ll use a proxy server ... Wait no I won`t, that site is watching grass grow.

Its a private site, not a public one. The owners can do as they see fit. Have at it with a proxy. I have no idea why you would want access to a site that you hate so bad.

As is clear from the fact that I have ignored this thread until I was told 1080 posts in that you were up to your usual BS against me and BF's, I could care less about this thread. MK has sold us parts and thats it. and cams were never on that parts lists. My cam said Crane on it.

Yes, it is similar to the 731. Never got the duration at .006 to tell me more about the ramp rates. All I have is the duration at .050, gross lift, open and closing events, etc. Guess I would have to get it on a Cam Doctor to know how aggressively it is opening the valves.

It has the copper coating on it, so pretty sure it is the 8620 billet core.

One thing I noticed when I ran this cam with a mechanical fuel pump is that it doesn't really look like the fuel pump pushrod is spinning. I am pretty sure that the fuel pump cam needs to be ground on an offset like they do with flat tappet cams to make the lifters or rods spin to prevent wear. When I ran it for a little while I was actually seeing a witness mark on the end of the rod. That is another thing that I will be checking when I get around to pulling it apart. I have read a lot of articles about people having problems with the brass tipped rods wearing out and mushrooming for mechanical FP applications. I have wondered if improper fuel pump lobe design is a contributing factor. Seems to reason that these should be ground on an offset like flat tappet lobes, not straight across like you would do for a roller tappet application.

Someone mentioned the possibility that LS cores were being used for cams with the LS firing order. Would it stand to reason that these cores would NOT have a fuel pump lobe?

Hopefully this thread will stay on target as an analysis thread about camshaft issues, and not digress into another flame thread that will have to be locked or deleted. Although extremely long, there is some useful information buried in here.

Who is zone 5?

A dude that use to only come in here when there was a cam thread and defend Bob till death. But now that the truth is out 'he doesn`t care' and bob didn`t sell him a cam all of a sudden. .. thats convenient.:lolhit:

Has anyone heard from Bob? It be interesting to hear why these cams are showing lobe wear, and some being outperformed when back to back tests were completed vs another off the shelf camshaft. I've heard him critique others camshaft designs, it be interesting to hear.

Maybe its assembly error by some of the pro engine builders.

Maybe its the springs supplied by afr on his "custom" heads he gets machined especially for marine endurance applications. You know, the same ones that you can get from any afr dealer with a inconel valve upgrade.

Maybe its the builders secretly sabatoging the builds to make him look bad

Maybe its the cam companys fault

Maybe its the lifter companies fault

Maybe its the brand of oil used

Maybe its the block isnt thermally stable

Maybe its a big scam to put him out of business .

Maybe its the lifter bore clearance again.

I guess I must have missed where anywhere in internet land its posted that I have a MK cam or ever had. You make this BS up as you go along.

As I have said in multiple places, I and others I know have bought a ton of parts from Bob ( with ZERO issues), but that does not include cams.

I don't believe that I have ever told anyone to buy a custom cam. I very well may have told someone to call Bob if they had a question on multiple parts including cams. I also highly doubt that there is any post from me defending him, as there has never been a need to. If you think I'm getting in the middle of this thread and saying any opinion, you are sadly mistaken.

You forgot Obama. :D

With the amount of backpeddaling seems you and BHB must not be locked in a 69 embrace any longer.. progress

Zone 5 defended Bob in. My thread before from what I recall...


When you call Bob have him chime in here, if he still has the ability to

what back pedeling are you talking about? Find a link to back up the BS you are trying to pedal.

Do you think if you say the same BS enough times it will come true? Your middle name must be hillary.

You started this agenda thread and you claim this? If you know where it is, post the link.

Nah, this one is the therapeutic venting chit show. That googler dude started another thread for data and folks are respecting that as it should be.

My big annoyance with MK is all the friggin hoops he had me jumping through, flow benching etc, thinking that I was doing legit due diligence when it was just a ruse to cover his lack of experience.

Here we go, agenda thread, this is nothing more then posting FACTS... As clearly seen, ok thx

I don't want this thread locked let's keep to the facts here, this is clearly an issue as seen here with proof, no agenda at all, besides warning others

I'm only here because your friend chose to bring me and my board into this thread 1000+ posts in. Your engine issues are yours not mine.

You didn't have to reply, see ya....

Sounds about right. Didnt he tell you , that going to one of his cams would net you 100hp or so in your 502 ?

I agree. I know it's not my thread but there is a lot of knowledge for many to gain from myself included. Lots of good info. So please let's keep the info coming and post. No need for any BS... Just facts regarding cams and combos would be nice. MT starting other thread will only continue to help everyone of interest.

I'd suggest you explain that to your friend. He is the one that chose the course, not me. As I said I don't care about your engine issues. If I did I would have posted back when you started this thread.

Jesus christ. Dude , you arent getting it. Again, nobody wants to hear your garbage. We get it , icdedppl mentioned you, you stated your case here, now let the adults get back to talking .

He said that it should be achievable but we never got past the preliminaries. There was no real speculation or promises. At some point I would like to switch out that cam for something more appropriate, but it will just be an off the shelf unit. I'm more bothered with the 110lsa than anything else.

your buddy has the issue, not me. Do you not think I could have posted on this thread days ago if I cared about it? maybe you and the rest of your buddies should have a talk with ICDEDPPL and tell him to stay on topic and not bring up peoples names that could care less what you have to say. Of course, as usual, you try and deflect and now you have started with the name calling.

Again, I don't care about FF's engine. I do care about being thrown into this mess by one of your friends.

Good talk.... Bye! See ya

Nah, based on your buddies post this is probably a thread worth reading from now on.

Hey zone 5, why dont you lift the ban you put on me over on boat freaks (even though i never posted there ), so i can come defend myself every time you have mentioned my name over there. Whats fair is fair right ?

Yes ok our buddy shouldn't have asked where you were? Your right but now it's time to leave. You made it obvious you didn't care about tims issues or the thread in general so just go away already.

Never mentioned there since your attempt to crash the board

I think you missed part of the story.

And leave? As in leave OSO? I've been a member here longer than you. Who are you to tell me this?

Don't post my name, don't post the board I'm the Admin of, and I'll just read in peace.

Post lies and BS like ICDEDPPL did.....

Boatfreaks boatfreaks boatfreaks is it like beetlejuice? It gets mentioned and you're summoned?

We can start a separate thread, showing all the screenshots i have of you and a few of your buddies bashing and chit talking me, and others, on boatfreaks. This thread, was started by Tim, about his issues, and certainly has evolved into a whole bunch of stuff. Real world stuff, for people who actually own boats, and engines. None of that pertains to you, so , can we get back to talking about the threads topic? Or, do you have something technical you wish to add here ?

Doug, you're attempt to get this thread deleted, or locked, is feeble. Honestly, even if it does get deleted, we'll just start another, and another, and another, pointing out facts and producing data. Your main sponsor "Marine Kinetics'" on boat freaks, doesnt run the show on offshoreonly . But good attempt , you get an A+ for trying to help him out by getting this thread closed.

Isn't the PM system wonderful. One of your buddies choses to make a lame incorrect remark about me, tried to join a board he has been banned from multiple times, and no one thinks I would call him out on it? and then when I do, its me not him that started it. Someone look at his post quoted above and see if I posted before that. The answer of course is no.

So Full Force, when will you be tearing into engine #2?

Have at your screen shots. (why you save BF's screen shots is beyond me) The same exsist on OSO of you and your guys calling a bunch of people including me out. Thats a stupid internet keyboard cowboy game.

So because I sold my boat an engine thread doesn't involve me? Still owning a boat has nothing to do with anything. Building motors? We have been down this path before. I'm not typing my resume out for you again. Its already on OSO.

Marine Kinetics our main sponsor? ROTFLMAO. not even close. Just because he has a banner ad doesn't mean anything as far as what pays for the site.

As far as getting this thread shut, Do you think if I wanted to do that I would have waited till today? I could care less if this thread stays up or not. But your comment that if it got shut you would just keep starting them shows that when I said you had an agenda that I was correct.

Back on topic:

Back when I was trying to get my engine build back on track, I spent a fair amount of time on the phone with Bob M. At the time, I was very grateful for the time he took to explain valvetrain geometry, and he pointed me to some articles that helped with pushrod length selection, component selection, etc. At the time, I thought that he was just being a good guy and trying to help boaters like me out. Sorry to hear about the issues people are having with the cams that he spec'd. Makes me worry that much more about mine. I would have to think that he has heard about this thread by now, so it is kind of surprising that he has not posted in his own defense. In the past, if someone posted something that brought his products into question, he was pretty quick to notice.

If you guys are planning another dyno session when done, I can lend my lightning headers for some comparison testing.
Maybe even my 14"KnN flame arrestor as well.
Hell, we can even try my carb, if you guys are feeling froggy

Have you pulled the heads from engine#1 yet? Would be interested to see if there are any issues with the valve seats.