XXO/BVGC '38 Chevy Coupe Build

Started by 38flattie, July 21, 2010, 06:34:16 AM

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Jack Gifford

#870
February 17, 2012, 09:41:09 PM Last Edit: February 17, 2012, 09:43:21 PM by Pontiac Jack
"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?
M/T Pontiac hemi guru
F/BFL 1-mile Loring record 2020

38flattie

#871
February 18, 2012, 07:27:27 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.
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

38flattie

#872
February 18, 2012, 03:26:35 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!
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

Milwaukee Midget

#873
February 18, 2012, 03:31:10 PM
Congrats!

Get enough of those and you can lose the ballast.  :cheers:
"Problems are almost always a sign of progress."  Harold Bettes
Well, I guess we're making a LOT of progress . . .  :roll:

GH

#874
February 19, 2012, 06:33:02 AM
Buddy, the RED ones are the ones you want.

38flattie

#875
February 19, 2012, 03:36:50 PM
Quote from: GH on February 19, 2012, 06:33:02 AM
Buddy, the RED ones are the ones you want.

Baby steps, Gary, baby steps!

....and a blown Jimmy 12 port! :-D
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

Stan Back

#876
February 19, 2012, 04:38:30 PM
I guess you don't want us to read it.
Past (Only) Member of the San Berdoo Roadsters -- "California's Most-Exclusive Roadster Club"

38flattie

#877
February 19, 2012, 04:59:51 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!
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

Jack Gifford

#878
February 19, 2012, 09:41:18 PM
I still don't see a "two piece head"? :?
M/T Pontiac hemi guru
F/BFL 1-mile Loring record 2020

RichFox

#879
February 20, 2012, 08:44:12 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.

BoredAndStroked

#880
February 20, 2012, 07:51:00 PM Last Edit: February 20, 2012, 07:57:04 PM by BoredAndStroked
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

Member of FlatCad Racing Team - 2011 - 2025
Goal:  Have fun, make friends, be safe - learn as much as possible, contribute when I can and hopefully see this beast of a Flathead Cadillac go over 200 mph!

BoredAndStroked

#881
February 20, 2012, 07:54:47 PM
Here are a couple pictures of the head - you'll see how it is a 'clam shell' design:

Member of FlatCad Racing Team - 2011 - 2025
Goal:  Have fun, make friends, be safe - learn as much as possible, contribute when I can and hopefully see this beast of a Flathead Cadillac go over 200 mph!

maguromic

#882
February 20, 2012, 08:08:00 PM
This engine makes my man parts tingle.  :cheers: Tony
"If you haven't seen the future, you are not going fast enough"

38flattie

#883
February 20, 2012, 08:18:56 PM
Tony, Dale was just 'teasing' you!

Here's a few more!
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

Milwaukee Midget

#884
February 20, 2012, 08:42:44 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!
"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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