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Author Topic: XXO/BVGC '38 Chevy Coupe Build  (Read 1032349 times)

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Offline Jack Gifford

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #870 on: February 18, 2012, 12:41:09 AM »
"Two piece" heads? :?

Since (you said) you had to lower the compression ratio, how come you didn't enlarge the heads' valve pockets for flow gain?
« Last Edit: February 18, 2012, 12:43:21 AM by Pontiac Jack »
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Offline 38flattie

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #871 on: February 18, 2012, 10:27:27 AM »
When we had the heads machined, we had only the Joe Abbin numbers to go off of. It was only when Garry flowed his head against ours, did we realize the issue.

Garry is doing some more testing for us, as we suspect the transfer area may need reworked. When we know exactly what we need, we'll 'trim' up the chambers.
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With sufficient thrust, pigs fly just fine. However, this is not necessarily a good idea. It is hard to be sure where they are going to land, and it could be dangerous sitting under them as they fly overhead. -- RFC 1925

You can't make a race horse out of a pig. But if you work hard enough at it you can make a mighty fast pig. - Bob Akin

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http://youtu.be/89rVb497_4c

Offline 38flattie

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #872 on: February 18, 2012, 06:26:35 PM »
I received my FIRST ever (hopefully first of many) Speedweek timing tag today!

I know this is old hat for most of you, but I was excited!

The pics didn't turn out very well, but it sure is cool!
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With sufficient thrust, pigs fly just fine. However, this is not necessarily a good idea. It is hard to be sure where they are going to land, and it could be dangerous sitting under them as they fly overhead. -- RFC 1925

You can't make a race horse out of a pig. But if you work hard enough at it you can make a mighty fast pig. - Bob Akin

http://www.flatcadracing.org/
http://youtu.be/89rVb497_4c

Offline Milwaukee Midget

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #873 on: February 18, 2012, 06:31:10 PM »
Congrats!

Get enough of those and you can lose the ballast.  :cheers:
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Offline GH

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #874 on: February 19, 2012, 09:33:02 AM »
Buddy, the RED ones are the ones you want.
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Offline 38flattie

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #875 on: February 19, 2012, 06:36:50 PM »
Quote from: GH on February 19, 2012, 09:33:02 AM
Buddy, the RED ones are the ones you want.

Baby steps, Gary, baby steps!

....and a blown Jimmy 12 port! :-D
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With sufficient thrust, pigs fly just fine. However, this is not necessarily a good idea. It is hard to be sure where they are going to land, and it could be dangerous sitting under them as they fly overhead. -- RFC 1925

You can't make a race horse out of a pig. But if you work hard enough at it you can make a mighty fast pig. - Bob Akin

http://www.flatcadracing.org/
http://youtu.be/89rVb497_4c

Offline Stan Back

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #876 on: February 19, 2012, 07:38:30 PM »
I guess you don't want us to read it.
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Offline 38flattie

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #877 on: February 19, 2012, 07:59:51 PM »
Haha! I took the pic at the house yesterday, now I'm back in PA. It says I was there, but did nothing memorable except show up and run!
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With sufficient thrust, pigs fly just fine. However, this is not necessarily a good idea. It is hard to be sure where they are going to land, and it could be dangerous sitting under them as they fly overhead. -- RFC 1925

You can't make a race horse out of a pig. But if you work hard enough at it you can make a mighty fast pig. - Bob Akin

http://www.flatcadracing.org/
http://youtu.be/89rVb497_4c

Offline Jack Gifford

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #878 on: February 20, 2012, 12:41:18 AM »
I still don't see a "two piece head"? :?
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Offline RichFox

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #879 on: February 20, 2012, 11:44:12 AM »
In order to machine water jackets in the billet heads there is a bottom piece which is in contact with the gasket surface and contains the combustion chamber, transfer passages and spark plug threads. Everything you see when you look at the bottom of a flathead. It is also machined for the coolent passages. The finned top half seals in the water jackets and looks pretty.
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Offline BoredAndStroked

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #880 on: February 20, 2012, 10:51:00 PM »
Okay - having trouble with attachments . . . maybe because I'm a newbie with attachments on this site.   So - if you see the same stupid thing 45 times, you'll know the reason.  ME!

==============


Monday Build Update:  Buddy has asked me to post some more pictures . . . here are the latest from this evening.

1) Finished the mounting of the crank snout support system -- uses a big roller bearing on the outside of the snout hub to take strain off of the crankshaft snout and also acts as sort of a '4th Main' for our 3 main FlatCad.   The crank hub goes on really tight - to reduce the chances of any run-out and/or any opportunity to wobble.   Once you put them on, you have to use a stout puller to pull them back off  (which I have).

2) Then I put all the blower manifold, intercooler and drive setup in place - to validate belt lengths and pulley options.   We can swap the lower-upper pulleys and switch over to a 48 driving 53 pulley setup, but if we want to run a larger upper pulley during breakin, we'll need a longer belt.   I tried to put on a 59 tooth upper pulley (next size I had from 53) - won't work.   We'll need to determine what pulley combinations, overdrive and belt we'll need for the dyno.

Attached is a picture - kind of looking a bit 'Bad A$$' now isn't it!   8-)    I have a lot to do in a short time - going to be a thrash in the next few weeks.

Dale

« Last Edit: February 20, 2012, 10:57:04 PM by BoredAndStroked »
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Offline BoredAndStroked

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #881 on: February 20, 2012, 10:54:47 PM »
Here are a couple pictures of the head - you'll see how it is a 'clam shell' design:

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Goal:  Have fun, make friends, be safe - learn as much as possible, contribute when I can and hopefully get in the books!

Offline maguromic

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #882 on: February 20, 2012, 11:08:00 PM »
This engine makes my man parts tingle.  :cheers: Tony
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Offline 38flattie

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #883 on: February 20, 2012, 11:18:56 PM »
Tony, Dale was just 'teasing' you!

Here's a few more!
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With sufficient thrust, pigs fly just fine. However, this is not necessarily a good idea. It is hard to be sure where they are going to land, and it could be dangerous sitting under them as they fly overhead. -- RFC 1925

You can't make a race horse out of a pig. But if you work hard enough at it you can make a mighty fast pig. - Bob Akin

http://www.flatcadracing.org/
http://youtu.be/89rVb497_4c

Offline Milwaukee Midget

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #884 on: February 20, 2012, 11:42:44 PM »
Hard to believe - but Tony, I've finally seen something sexier than your avatars on these boards.

Buddy, Dale - That's ONE BEAUTIFUL ENGINE!
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"Problems are almost always a sign of progress."  Harold Bettes
Well, I guess we're making a LOT of progress . . .  :roll:
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