another cam ?
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another cam ?

  1. #1
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    Default another cam ?

    Opinions please. Cam is 254 @a .050. on the exhaust, 10.8/1 BBC, bassets with water going to them at 1200 rpm. I idle it at 1100 because of the jet-away. Any problem with water or idle and cam wear. This is my old motor that I am trying to sell after I break it in and run it a couple of weekends. Oh yea Flat tappet solid .583 lift. Thanks

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    Quote Originally Posted by jungledave View Post
    Opinions please. Cam is 254 @a .050. on the exhaust, 10.8/1 BBC, bassets with water going to them at 1200 rpm. I idle it at 1100 because of the jet-away. Any problem with water or idle and cam wear. This is my old motor that I am trying to sell after I break it in and run it a couple of weekends. Oh yea Flat tappet solid .583 lift. Thanks
    No one ???

  4. #3
    ptz
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    what is the lca ?
    is it an old erson cam ?
    Last edited by ptz; 02-07-2009 at 12:38 PM.

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    Quote Originally Posted by ptz View Post
    what is the lca ?
    is it an old erson cam ?
    It is an Isky. .590 254/[email protected] 108LC lc That is at a 1.75 roker, .587 on a 1.7.

  7. #5
    Super Moderator HammerDown's Avatar
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    Quote Originally Posted by jungledave View Post
    ...I idle it at 1100 because of the jet-away.
    Real quick, why does the Jet-away need a high idle?
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    Quote Originally Posted by HammerDown View Post
    Real quick, why does the Jet-away need a high idle?
    Because its kinda like a ratchet or better yet a sprag like a starter drive. When the engine has a rough cam idle it makes a knock or clunking noise from the jet-away catching and spinning the impellar So I run the idle up so you don't have to hear it. I imagine its not too good on the jet-away to let it clunk.

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    Senior Member carreradude's Avatar
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    I am by no means an expert, but I think you are introducing water too soon. My boat is set up to send water to the headers @ 1800 rpm. My cam is close to yours, except my lsa is 113 and 575 lift. And my boat idles at 1200 rpm.

  10. #8
    Member paradigm shift's Avatar
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    Quote Originally Posted by jungledave View Post
    Opinions please. Cam is 254 @a .050. on the exhaust, 10.8/1 BBC, bassets with water going to them at 1200 rpm. I idle it at 1100 because of the jet-away. Any problem with water or idle and cam wear. This is my old motor that I am trying to sell after I break it in and run it a couple of weekends. Oh yea Flat tappet solid .583 lift. Thanks
    These are non jacketed bassets correct? With that high of an idle and NO water dripping from weep holes I would think you are OK. If you have water out the weep holes I think I would be concerned about reversion. If the water does not start until 1200 I think you are OK. Ever pulled header and checked after running. Never ran that cam but when I ran a flat with bassets we just made sure they were dry at idle and never had any problems. JMHO.

    I will add if the water could come on later as already noted it would give you a little more insurance.

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    Quote Originally Posted by paradigm shift View Post
    These are non jacketed bassets correct? With that high of an idle and NO water dripping from weep holes I would think you are OK. If you have water out the weep holes I think I would be concerned about reversion. If the water does not start until 1200 I think you are OK. Ever pulled header and checked after running. Never ran that cam but when I ran a flat with bassets we just made sure they were dry at idle and never had any problems. JMHO.

    I will add if the water could come on later as already noted it would give you a little more insurance.
    Ya, I could adjust the water rpm up. I have to keep the idle down because of the speed in the wake zone, although I could just drop the reverse bucket to slow it down with a higher idle. I liked the water going in at 1200 so I could power brake it, for lack of a better term, in a cove and cool the headers easier. I've seen this cam on the dyno and it makes good power,;609 on a iron headed 468 and is very easy on the valve train. Thanks

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    Quote Originally Posted by carreradude View Post
    I am by no means an expert, but I think you are introducing water too soon. My boat is set up to send water to the headers @ 1800 rpm. My cam is close to yours, except my lsa is 113 and 575 lift. And my boat idles at 1200 rpm.
    Sounds like it will work OK with some water adjustments then. thanks for the reply

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    ptz
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    how much for the engine ?
    what heads/ intake are you running on it ?

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    Quote Originally Posted by ptz View Post
    how much for the engine ?
    what heads/ intake are you running on it ?
    Ported 049s with 2.19s. Rpm air gap. All forged, ohio 6.385s and ohio forged crank. pushed my 21 into the 70s. I had a terrible float problem with it last summer that limited the boat, damn lucky I didn't break it, that is now cured. $3k

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    It's what we do BDMarine's Avatar
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    Quote Originally Posted by carreradude View Post
    I am by no means an expert, but I think you are introducing water too soon.
    Agreed, at 1200 there is still enough pulsing in the exhaust that water will enter the cylinders with Bassetts. They introduce water only inches away from the exhaust valve. I would suggest a minimum of 1800 RPM's. We usually set them at 2200 when the engine has an agressive camshaft.
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