Which piston to get??
Hotshot
Joined: May 2003
Posts: 11,141
Likes: 25
From: south louisiana
In general, an automotive cam will work in marine application, for example the big issue is going to be the rpm range that the cam will produce its hp and torque. Which is different between boat and auto.
And then you have-
profile centerlines, centerline separations, adv durations, 050 durations, lift, rate of lift, ramps, profiles, lifter types, etc... all will come into play to tailor a cam for a particular engine application.
They have already admitted that the cam was wrong by saying "The cam is getting reground a little".
And he didn't say if the 302 was replacing 1 motor in a boat with 2. If so what if it is the reverse rotation engine- Then the cam wouldn't work. He didn't tell us that it was the reverse engine and everyone said to run it and then it doesn't work what does he do then? post it here I guess.
.
And then you have-
profile centerlines, centerline separations, adv durations, 050 durations, lift, rate of lift, ramps, profiles, lifter types, etc... all will come into play to tailor a cam for a particular engine application.
They have already admitted that the cam was wrong by saying "The cam is getting reground a little".
And he didn't say if the 302 was replacing 1 motor in a boat with 2. If so what if it is the reverse rotation engine- Then the cam wouldn't work. He didn't tell us that it was the reverse engine and everyone said to run it and then it doesn't work what does he do then? post it here I guess.
.
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Cargo Master
Joined: May 2011
Posts: 2,387
Likes: 138
From: Northern California
You had nothing to fear from reusing the Explorer's lifters, they're roller lifters and as such you can mix em up all day long and it'll make no difference as to wearing the cam lobes. No need to regrind the cam cause of it either. Flat tappet cams are a different animal when it comes to the lifters.
Lets play a little devils advocate... Whats the worse thing that is likely to happen if a cam fails? Replace the cam and lifters as well as oil? Just dont want to jack up a new block.
Hotshot
Joined: May 2003
Posts: 11,141
Likes: 25
From: south louisiana
There will be no failure from mixing the roller lifters..............................period. I've mixed many of them, reusing them in different motors on different cams. Again.....no failures from that. Flat tappet cams and lifters are a whole 'nother animal in this regard.
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Cargo Master
Joined: May 2011
Posts: 2,387
Likes: 138
From: Northern California
I feel like I am taking a bit of a leap of faith on this one but thats the story of the entire project. I will feel better when its done and it fires up without exploding.
Not grinding and reusing the lifters saves a couple hundred bucks. Thanks!
Not grinding and reusing the lifters saves a couple hundred bucks. Thanks!
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Cargo Master
Joined: May 2011
Posts: 2,387
Likes: 138
From: Northern California
Ordered the regular valve relief set. That settles that. Summits prices were pretty dámn good. $75 + $10 for shipping which is much less than I could get to their Sparks, NV store for.
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