Discussion in 'Chevy' started by whiteknight, Jan 23, 2011.
GrizzlyV6, lets be friends ok? I don't want to argue and I don't want to make enemies. I don't have an airplane. I DO have an enormous amount of enthusiasm and this forum is the only real outlet I have for it. You have obviously lavished a great deal of thoughtful effort on that engine of yours and that shows me that while our material situations are different, you have at least as much enthusiasm for this as I do, and in that way we are much alike.
Dang. That's infuriating! I can see why you're a little testy about this - the stupid thing is advertised and no one will admit to having one. It would make sense for people like World products and other companies to make these available in the future since it is a smaller engine and more people will be wanting to modify them. Sorry about yanking your chain, I certainly didn't mean to.
From the pdf linked in post #18, I know, it's a different part number, but I thought that the difference between an odd-fire v6 90 and an even fire v6 90 was just the crank pins (and the cam)?:
14011069 — Aluminum Bow Tie BlockAn aluminum block is an essential ingredient for a lightweight V6. This 356–T6 cast aluminum block is recommended for road racing and otherapplications where engine weight is a consideration. It is outfitted withcentrifugally cast 4.00" diameter cylinder liners and billet steel four-boltintermediate main bearing caps. These heavy-duty caps have angled outerbolts that add to the block’s bottom end strength.Technical Notes:Aluminum blocks are designed for crankshafts with 2.45"diameter main bearing journals. All production V6/90° engine componentscan be installed in aluminum Bow Tie blocks. Block weight is 70 lbs.
Here's an old ad from Racingjunk.com: http://www.racingjunk.com/Blocks/2357450/Bowtie-ALUMINUM-v6.html
It expired about two months ago but there is a picture so that is proof that these things do exist. This is Part no. 14011069 - it is an even fire block and as you can see it also has the mechanical fuel pump boss, this is the correct part number for an airplane engine IF one can be found, rather than 10134371. Best bet woud be to look on Racingjunk or perhaps cultivate some connections in the racing world.
Edit: I know that the ad also lists an odd-fire crank as being for sale too, but the GM pdf linked to above says that all production v6 90° parts can be assembled into block no. 14011069. I see no reason why a custom billet crank can't be made to convert an even-fire v6 90 to odd-fire. The crank pins would need to be offset and a different cam would be needed.
Unless it is a racing application, I dont think an even fire GM engine has been made sense 1980. Crank and cam is all that is different between the two. If they casted 2 different blocks for the firing order, it would be for some arbitrary racing rules. The problem with even fire engines are the shakes. 90 deg v6s is not a natural combo like a straight or flat 6. Your going to have to custom crank and cam that engine. With most V6 racing classes, too expensive for all the custom stuff; many are proposed and closed before a wheel hits the pavement.
Jim, I don't understand why you seem to be angry at me, I've done you no harm. This is just an internet forum and nothing that happens here is worth getting upset about. I am only trying to understand some statements you have made which seem to be at odds with the literature from GM Performance that I have read and posted here as well. This means that we are arguing with each other about contradictory info that we have gotten from the same source - we shouldn't be mad at each other, we should be mad at the source of the contradictory info, namely GM.:think:
You may already know this stuff.
The question is, is the vibration of the even fire make a weaker crank in operation than a split pin? Buick V6 Indy engines were odd fire and I believe they never had the crank be the cause of breakdown. Not the same application for sure but was extreme use and you are wanting to use the same type of racecar parts.
Misinformation. The ad is for an aluminum (not iron, as you mistakenly suppose) BowTie block #14011069. I posted it not saying that "I had one" but to make the point that they do exist.
More misinformation. There is no such thing as an "odd-fire" block. Chevy made two-piece seal crankshafts for only one year - but they did make them, so the two-piece seal issue is not insurmountable.
Part #10134371 is a dry sump only block which has no mechanical fuel pump boss and is not really suited for an aircraft conversion due to the lack of a mechanical fuel pump.
The #14011069 block is both wet sump and has provision for a mechanical fuel pump and is the better choice for an aviation engine - I hope you didn't spend two years looking for the wrong part.
You have accused me of being full of crap, but none of the statements I've made are untrue. The things you've accused me of saying were just made up by you. Your assertion that I have no right to argue about any thing with you because I haven't built an engine is also false because it is an ad hominem argument which is a patently false type of argument. I do not owe anything to you least of all to go and find something you want - if I try to do that, and even if I fail, I am not "full of crap". I am a member of this forum and like anyone else here, I can argue with you about anything airplane related as much as I like as long as I keep it civil, which is something you have failed to do.
HBA's rules clearly state (no 2), no personal attacks. So let's quit the personal remarks from all sides and continue a good discussion on these blocks.
If this continues, posts will be deleted and I will spam the offenders with some video's from Bob Marley, such that you get your attitude right
PS: I did trash a considerable number of posts for those who wonder, all of them were double-posts, so nothing on-topic has been deleted.
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