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Messages - Steveo909

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1
Engine Mechanical / Electrical / Re: Ford 460
« on: January 29, 2018, 08:59:23 AM »
Thanks for sharing knowledge about this.

I'm repeating myself, but..
Do you mean the Clay Smith recommended camshaft is OK, it's just that i really should have a higher compression ratio and a better exhaust? -to get better use of it

OR should i buy another camshaft?

If no no other camshaft will give me any higher HP because of my exhaust/compression i think i'm just going to go for it..

And then it's the question regarding the lobe separation.
Clay smith at first recommended 108 degree, that would be no problem they said because of my exhaust type, but they could also grind 110 degree on the same camshaft, would also work well they said.
 Would i loose much power with that?

Lots of questions, but i'm struggling here  ::) :D
As lakes only mentioned, you can talk to ten people and get 10 opinions. I would honestly go with what ever he recommends for your set up. George (the owner) has been building engines for jet boats for a very long time. He wonít steer you wrong. I think your exhaust is going to hold you back from the full potential so Iím sure he wonít recommend anything to aggressive because it would just be a waste.


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2
Engine Mechanical / Electrical / Re: Ford 460
« on: January 24, 2018, 11:33:36 PM »
Correct, you need an external balance flexplate. Try eBay.

The heads will need machining in the valve train area to accept more lift, exactly what gets machined depends on camshaft and valve train setup but for sure you need to machine down the valve guide bosses.  Maybe you will need to convert the pedestal rockers to 7/16 stud but that is not for certain just yet.  I do happen to have a set of ported D3VE heads for sale with the 7/16" stud conversion already done.
There sure are some nice aluminum heads out there, but they most certainly are not needed for such low horsepower builds.  ::)   Factory iron 429-460 passenger car heads has supported in excess of 1700 horsepower, naturally aspirated close to 800 hp.  Why spend thousands on aluminum heads for such a mild build?  That's misappropriated budget spending.
If the claim of 475 hp is made with the camshaft linked in your original post, then the individual at Clay Smith Cams is off by at least 100 hp.  375 hp is more realistic, but still optimistic and assumes optimum, optimum tune with your engine parts combo as pictured.
I think he was talking about the cam that clay smith quoted him on. I have the same one with the worked over D3VE heads and it put me in the neighborhood of 450-500. I turn about 5100 with an agressor A/B cut


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3
Engine Mechanical / Electrical / Ford 460
« on: January 24, 2018, 03:41:15 PM »
I don't agree with you, as long as the stock heads are ported they're not crap..

I would really like aluminium heads, but the costs is just too high for this build.



@Steveo909

I will get the heads machined so i can use any roller rocker kit.
Do you have a link to your comp rollers online steveo?


ClaySmith answered with my setup, and that cam i should see about 475 hp and rev 5000-52000 rpm. Sounds awesome to me.


Only thing i am concerned about is the lobe separation which was 108 ....  i have read a lot about "sucking water" because when you have such thigt separation the inlet and exhaust valve is opened at the same time for a little time.
I will ask Clay about that also

Any experiences with 108 lobe separation on wet exhaust here ?  :D
With that cam you donít really have to worry about reversion (sucking up water) especially with that type of exhaust but Iím not familiar with it. Unless the manifold is water injected before the rise I think itís ok. It looks to me like they have water jackets like log manifolds. Just keep the exhaust flaps in good shape. As far as the comp rockers go, I also bought from clay smith but you can get them from summit Iím sure. With my setup George  wanted me to run 1:8 on the intake side and 1:7 on the exhaust. I thought it was a little unusual but heís been doing it for 50 years so I didnít question it.


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4
Projects / Almost there
« on: August 17, 2017, 08:58:57 PM »
Plan to be testing and tuning on havasu next week.


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5
Jet Pumps / Re: Loader for dominator 12 td on 21' commander
« on: April 27, 2017, 02:09:54 PM »


Is this on hardin marine?
CP performance sells them


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6
Jet Pumps / Re: Loader for dominator 12 td on 21' commander
« on: April 27, 2017, 10:52:34 AM »
I use this one on my 21'. Works good but I may upgrade to the SS version with new engine.


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7
Jet Pumps / low speed control w/ jetovator
« on: April 19, 2017, 04:54:00 PM »
I've never seen a jet boat that could hold a straight line at idle. If the idle is set high it makes it a little easier.
Even the rudders don't really make a difference which is why nobody uses them.
Steer with the gas pedal.


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