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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)

Full Force 11-20-2016 10:13 AM

I always post everything, I am not a "secret" kinda guy.... I really want to go solid, but n ot sure I want to pull exhaust complety off every 25 hours to lash check, if I gained 40-50 HP I would be WAY happy... current sets of lifters are going to Johnson for inspection and any cleaning or fixes needed, things look fine but sending them anyway, especially if I sell I can give them a clean departure knowing they are ok, I wont sell junk to anyone.


Originally Posted by getrdunn (Post 4502557)
id bet 40-50 hp gain with new intakes and port work. Most importantly your not going to continue slinging cam dust everywhere throughout and you'll have a good stable valvetrain. You have to make the decision on cam however I'd really consider going solid roller. It's always nice to know valves are open when there suppose to. Just my opinion but I hate hyd lifters. Did you inspect your roller bearings and clean. Time consuming I know but if you do use them I'd be a little concerned about cam lobe residue. May sound overly cautious I know but no need to take a chance. Less agressive lobe hyd will be fine I'm sure. I just have a personal preference and don't like to second question a valves position at a given moment. Keep us informed what cam you go with. No secrets now!!!


Black Baja 11-20-2016 08:12 PM

Did either of the timing chains have any slack when you pulled them apart?

Full Force 11-20-2016 08:25 PM

they were still like new, best part I bought LOL


Originally Posted by Black Baja (Post 4502699)
Did either of the timing chains have any slack when you pulled them apart?


SB 11-20-2016 08:55 PM

Where the valve locks hard to remove ? Any discerning marks in the grooves ?

getrdunn 11-20-2016 09:03 PM


Originally Posted by SB (Post 4502714)
Where the valve locks hard to remove ? Any discerning marks in the grooves ?

What r u thinking? SP?

SB 11-20-2016 09:04 PM


Originally Posted by getrdunn (Post 4502717)
What r u thinking? SP?

Honestly ?

Pats won and Trump making good progress. Plus it's snowing right now. Great week for me. :D

Full Force 11-20-2016 09:17 PM

Not really, one lock came out in 3 pcs.... I know that...

Originally Posted by SB (Post 4502714)
Where the valve locks hard to remove ? Any discerning marks in the grooves ?


MILD THUNDER 11-20-2016 09:24 PM

I think what sb was asking, was if the locks are hard to remove, it could be a sign of valvetrain instabilities

SB 11-20-2016 09:26 PM


Originally Posted by MILD THUNDER (Post 4502724)
it could be a sign of valvetrain instabilities

So could a broken lock,
Obviously, other things can break it also...installation error and etc.

Full Force 11-20-2016 09:42 PM

not overly hard, a few were pretty snug, but we already know the valvetrain was not great ..


Originally Posted by MILD THUNDER (Post 4502724)
I think what sb was asking, was if the locks are hard to remove, it could be a sign of valvetrain instabilities



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