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GPM 03-09-2009 04:16 PM

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jdnca1 03-09-2009 05:23 PM


Originally Posted by BenPerfected (Post 2814652)
idanc1,
I would be interested in more info on the the combination where the 520 CI NA motors made 1100+ HP.
Ben

I can't tell you that much about it other than what already did. It's some sort of "class" motor. Ask him the power to be sure, I'm working from memory and was busy with dyno and my 2 motors. :drink: Here is the builder link. http://www.besracing.com/

Panther 07-30-2009 10:21 AM

Eric,

What did you decide on for heads? How's the project coming and/or the boat running?

Frank

Young Performance 07-30-2009 01:53 PM

Jim V is working on the heads and I am building the short blocks. Should be ready soon.
Eddie

Panther 07-30-2009 02:32 PM

Awesome, cool!

RunninHotRacing163.1 07-31-2009 01:30 PM


Originally Posted by Young Performance (Post 2921658)
Jim V is working on the heads and I am building the short blocks. Should be ready soon.
Eddie

Jimmy V is a great guy and really knows his heads .......:drink:

2112 08-01-2009 01:18 PM


Originally Posted by RunninHotRacing158 (Post 2815940)
Titanium valves, Beryliun seats, Jesel valve train :ernaehrung004::ernaehrung004:

How do the titanium valves hold up in the marine application? Are you using them for both intake and exhaust?

My 1.90" Inconel exhaust valves are as heavy as my 2.4" SS intakes. Would love to lighten the weight but I always thought Titanium is for drag motors.

n20michael 08-01-2009 07:53 PM

I have used Ti. valves in a pile of drag motors back in my drag racing days, they where incredibly light, but, tended to be hard on valve seats, they take INCREDIBLE amounts of heat and are lighter than Inconel, but, unless you are spinning the motor to insane rpm levels I wouldn't recommend them in a boat, unless its a drag boat and/or you have a bottomless bank account and alot of free time for maintainance.

Something else I have found out [first hand] is you DONT want to ever "backfire" the motor, as strong and light as those valves are you would be shocked at how fast they "tulip" if you burp the motor.

I guess what it comes down to is that [99% of the time] there are better ways to waste your money.

Just my Thoughts!
Michael

n20michael 08-01-2009 07:57 PM

If I had the money I would buy a pair of these, with a 10:1 flat piston, hydraulic roller and fuel injection, OH YEAH!!!!!


http://www.sonnysracingengines.com/e...-racing-engine

MER Performance 08-01-2009 11:19 PM


Originally Posted by n20michael (Post 2922929)
I have used Ti. valves in a pile of drag motors back in my drag racing days, they where incredibly light, but, tended to be hard on valve seats, they take INCREDIBLE amounts of heat and are lighter than Inconel, but, unless you are spinning the motor to insane rpm levels I wouldn't recommend them in a boat, unless its a drag boat and/or you have a bottomless bank account and alot of free time for maintainance.

Something else I have found out [first hand] is you DONT want to ever "backfire" the motor, as strong and light as those valves are you would be shocked at how fast they "tulip" if you burp the motor.

I guess what it comes down to is that [99% of the time] there are better ways to waste your money.

Just my Thoughts!
Michael

You should be using a alloy valve seats on Ti valves, I use alloy on all my heads, if not the intake always on the exhaust.


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