Cam and valvetrain longevity....??? low duration high lift...

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09-27-2016, 07:48 PM

#571

abones

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Last edited by abones; 09-27-2016 at 08:39 PM.

09-27-2016, 08:05 PM

#572

phragle

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09-27-2016, 08:15 PM

#573

getrdunn

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ff you get the engine pulled yet?

Last edited by getrdunn; 09-27-2016 at 09:23 PM.

09-27-2016, 09:28 PM

#574

buck35

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Full farce hates me and has said to have now blocked me, but I think my pizzing him off in another thread led to this one.
I hope he finds what he is after, be it reliability, speed or both.

09-27-2016, 09:34 PM

#575

Full Force

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I think 6" its the same as my buddys that came with 420's, we checked that 5 years ago...

Quote:

Originally Posted by Panther

How far is the propshaft below the bottom of the boat?

They had different X's based on engine packages and props that the boat was build with.

Just a thought.

09-27-2016, 09:36 PM

#576

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had wideband before and after dyno, WOT was checked on dyno in my case.. things change from dyno to boat, no matter what..

Quote:

Originally Posted by getrdunn

Think that got resolved in regards to engines in the boat anyway. Port side was off and running lower AFR's and rpm at wot. He had since installed wideband on both engines and got jetting squared away and same rpm's at wot. Why Tim didn't look down to confirm throttle plates were 100% open while at 6k on dyno is beyond me. Lol. Joke joke. Think we covered that also. SB woulda done it.

09-27-2016, 09:39 PM

#577

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yes, tonight...trans dropped off...

I plan to compression test and pull valve covers tomorrow and look at things...

Quote:

Originally Posted by getrdunn

ff you get the engine pulled yet?

09-27-2016, 09:41 PM

#578

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I'm over it, just sick of some of the BS, this thread was to get SOLID INFO... that's all still didn't get it really, guess a valve cover check will tell me tomorrow...

Quote:

Originally Posted by buck35

Full farce hates me and has said to have now blocked me, but I think my pizzing him off in another thread led to this one.
I hope he finds what he is after, be it reliability, speed or both.

09-27-2016, 10:13 PM

#579

getrdunn

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lots of things to ck over without out question but given both engines nearly identacle I still say intake manifolds assuming cams degreed correctly but it sounds like you confirmed that. Not enough spring pressures and or lifter failure woulda showed up on dyno. What springs are you using? Johnson lifters correct?