Just another "impossible" build
Lead Driver
Joined: Apr 2008
Posts: 6,945
Likes: 13
I agree, with my "wild" engine, for lack of a better word. Im going to shoot for 17:1, however im also going to have 250cc of fuel and compounds.
Posting Guru
Joined: Feb 2013
Posts: 1,203
Likes: 0
I think they are malae The engain is bored .030 so they are .030 bigger around.
The stock face with the valve rellife and the diveit that the injector shoots into.
If someone has a equation I would like to do the math to see what I have.
The stock face with the valve rellife and the diveit that the injector shoots into.
If someone has a equation I would like to do the math to see what I have.
Elder User
Joined: Aug 2007
Posts: 589
Likes: 2
From: Nutter Fort,West Virginia
ok, so how do you figure peak pressure?
that is kinda like saying that anything that will make it light off faster closer to tdc will cause head float. propane, high compression, finer fuel delivery, hotter engine, hotter air charge.
kinda like more fuel more air is good, but don't burn it too fast so that the force is spread out over the stroke.
that is kinda like saying that anything that will make it light off faster closer to tdc will cause head float. propane, high compression, finer fuel delivery, hotter engine, hotter air charge.
kinda like more fuel more air is good, but don't burn it too fast so that the force is spread out over the stroke.
Lead Driver
Joined: Jan 2006
Posts: 6,267
Likes: 5
You can only do so much, as soon as you create the heat, it's already getting soaked into the surrounding metal, and losing heat on it's own as the mix decompresses during the power stroke.
I wouldn't be surprised if 90% of the power is generated from the 1st 90 deg of turn of the power stroke, after that, I think theres pretty much nothing.
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Senior User
Joined: Jun 2012
Posts: 282
Likes: 0
Shop floor got poured today, a week from today it will be hard enough to park equipment on, if it stays warm, 70's today in NW Ohio. Then I will pull it in and start pulling the motor and trans and transfercase to get my engine work done. About the time I get that done, I will be able to afford a turbo and adapter plate, its all coming together nicely!
Senior User
Joined: Feb 2012
Posts: 445
Likes: 6
From: western Oregon
Careful what you say, My build has dragged on for more than a year. Took me 6 months and 5 engines to fined one with good bores. Now its assembled and I am mocking up the exhaust while I wait for more cash for injectors and glow plugs. Something always goes wrong with the best laid plans....
Postmaster
Joined: Dec 2004
Posts: 2,941
Likes: 32
From: Maple Valley, WA
Careful what you say, My build has dragged on for more than a year. Took me 6 months and 5 engines to fined one with good bores. Now its assembled and I am mocking up the exhaust while I wait for more cash for injectors and glow plugs. Something always goes wrong with the best laid plans....
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Senior User
Joined: Jun 2012
Posts: 282
Likes: 0
Well I am shaving pistons .040 and balancing/lightening rods, that will save some money hopefully (if I get it right!). And like you Brad, I am hoping for a A.O.K. block bore. then I will have to get studs, and springs and gaskets to reassemble the block. Justin did you ever find anything out about the main studs?
Postmaster
Joined: Dec 2004
Posts: 2,941
Likes: 32
From: Maple Valley, WA
No, never pursued them.... Rod bolts are a weaker link than main bolts, and we dont even have a source for those, so I kinda left the main studs on the table for now.
Either way, I dont think we will need either unless we find a way to get more fuel than we have access to now.
Either way, I dont think we will need either unless we find a way to get more fuel than we have access to now.
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Senior User
Joined: Jun 2012
Posts: 282
Likes: 0
Ok just checking, I don't want to have to pull this motor more than once, even though I know I will probably have to some time, I don't want to have to do it under those circumstances. You never balanced your engine either did you? That's one thing I'm going to try. And what is meant by air checking? Just jacking up the truck on blocks and letting it role?