Fabrication Everything From JBwelded/Fluxcored downpipes to Equal length SS Manifolds.

material for exhaust valves

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Old Jun 15, 2006 | 08:21 AM
  #11  
idiot-stick's Avatar
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Default Re: material for exhaust valves

Originally Posted by Joseph Davis
The stem is made out of a friction-friendly stainless alloy, the head out of a temperature-friendly alloy, and the head is spun very very very fast, brought into contact with the stem for a split instant so it friction-welds itself on + released from whatever fixture is spinning it.
I didnt know that. I'd like to see a super slow-mo of the production process. sounds like it'd be a cool thing to see.
Old Jun 15, 2006 | 10:21 AM
  #12  
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Default Re: material for exhaust valves

no need to hate guys, I was just asking for sake of conversation, I was interested in what the advantages/dissadvantages would be,and I thank everyone who answered

I am not trying to overbuild my engine,just maybe here and there try a few new ideas. If anyone does have any sudjestions of things that would be beneficial for building the engine other than teh obvious common things,please post them up or PM me, I just wanna do a little "outta the box thinking" and even if things never do get put into action it is certainlly educational to look into each one
Old Jun 15, 2006 | 11:11 AM
  #13  
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Default Re: material for exhaust valves

Originally Posted by sailman
no need to hate guys
Nonsense, it is always hate-thirty on HMT.

Originally Posted by sailman
If anyone does have any sudjestions of things that would be beneficial for building the engine other than teh obvious common things,please post them up or PM me
Yeah, forget the "obvious common things" and go for the "obvious common sense things"

Like, first off, set a goddamn power goal so the parts you need become apparent.
Old Jun 15, 2006 | 11:49 AM
  #14  
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Default Re: material for exhaust valves

350whp using stock roda, pistons and crank
Old Jun 15, 2006 | 11:55 AM
  #15  
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Default Re: material for exhaust valves

http://www.honda-tech.com/zerothread?id=1622667

Don't be a wuss, go all out, scroll down about mid-page!
Old Jun 15, 2006 | 11:59 AM
  #16  
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Default Re: material for exhaust valves

Stock crank is fine to over 1000.

Rods, pistons are borderline. The problem is thermal loading and detonation on an LS as you approach knock limit, typically 350 whp. Light "inaudible" detonation places stress on ringlands, forces the rod down very hard momentarily so that the oil film parts between crank and upper rod bearing.

Water injection will cool the piston and combustion chamber greatly (aluminum is half as strong at 600 deg F as at room temperature, much less at actual combustion temps, you strengthen the piston by WI). It also adds a good bit of knock limit, typically 15% for 50% water:fuel ratio. I'd say you stick with WI.

I'd also steer you to a set of cams and valvetrain, if you want to be different. Nothing like a little camming at idle, followed by turbo whine, to make the idiots do a double take.
Old Jun 15, 2006 | 06:34 PM
  #17  
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Default Re: material for exhaust valves

Originally Posted by Joseph Davis
Hot air like Heywood/Taylor LIE about? If hot air where all that + a bowl of grits, we would spend millions of dollars constructing nuclear reactors to heat air, not water, to turn turbines. But, we don't. The expansion of wet steam is about as good as it gets for practical applications.




Heywoods book was a pain in the *****
Old Jun 15, 2006 | 06:34 PM
  #18  
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Default Re: material for exhaust valves

Originally Posted by JK_Motorsports
http://www.honda-tech.com/zerothread?id=1622667

Don't be a wuss, go all out, scroll down about mid-page!
Ya that norwood project was from like 99 that never saw the track
Old Jun 15, 2006 | 10:58 PM
  #19  
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Default Re: material for exhaust valves

Originally Posted by fork


Heywoods book was a pain in the *****
Over half of Taylor's two volume ICE in theory and practice's bibliography is either contradictory, or doesn't quite mean what he says it does. Frankly, I've never read Heywood, but I'm told it's more of the same; Heywood and Taylor get drunk and kiss or something.
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