Author Topic: XXO/BVGC '38 Chevy Coupe Build  (Read 1026956 times)

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Offline BoredAndStroked

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #1440 on: November 26, 2012, 12:20:41 PM »
The part number on the one bearing is CB610-p. Phil

That is what I figured . . . used on Buick's and some AMC products as well.   Wish that bearing was a bit wider!
Member of FlatCad Racing Team - 2011, 2012
Goal:  Have fun, make friends, be safe - learn as much as possible, contribute when I can and hopefully get in the books!

Offline Rex Schimmer

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #1441 on: November 26, 2012, 01:22:00 PM »
BnS and Buddy,
Looking at your bearing it appears that the rod cap side which only sees load when the piston is pulled down all look pretty good (excepting no. 5 of course) and because you are not turning big rpms this should be expected, now the bearings on the rod side that see the load of compression and combustion are the ones that look the most hammered. From the pics of the flathead bearings that Satlracer 1 showed it sure looks like some sort of coating, Parkerizing etc, would be called for you may even think about going to some additional oil pressure could help and after talking with Stu Van Dyne he suggest going to straight 50 wt oil, his experience is that multi vis oils will not work in blown motors.

Rex
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Offline 38flattie

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #1442 on: November 26, 2012, 05:21:38 PM »
Rex, it was great talking to you about Stu Van Dyne's theory! Ironically, as soon as I hung up , I received a conference call from Pops29, and his engine builder, Kenny Boyd, owner of Valley Balancing.

Kenny had just finished cleaning, magging, and psi checking the block-it came out fine! Kenny had the same assessment- go to coated bearings and heavier oil! He too, thought our clearances were fine-said we could even close them up some with the coated bearings.

Both of the above conversations caused me to pull over on the side of the road. I want to add H2O injection on the FlatCad, and had talked to a couple of dealers for Snow Performance Parts. Unfortunatly, they didn't want to take the time to listen to what I needed, but instead kept wanting to sell me a computer controller to run the injection system. That would be great, but it's not allowed in the Vintage class.

So, this morning I decided to make the 300 mile round trip drive to visit Snow Performance Parts. After explaining what I needed, they said no problem! One guy headed out to grab the setup I need, while the other guy explained it to me. It's very simple- a psi switch is activated at a preset psi (ours will be 7psi), and kicks the electric pump on, that supplies the injector. As boost falls below that preset number, the pump kicks off. I'll need to tap the intake for the boost hose fitting, and the injector hat for the H2O injector, and do a little plumbing and wiring.

I'm real curious to see how this effects our intake temps, and HP, on the dyno!
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 desotoman

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #1443 on: November 26, 2012, 07:43:41 PM »


g) Oil:  0W - 50W Mobile 1 Racing oil



Dale,

IMO throw away that  weight oil. I run the same clearances you do on the rods and mains, and even a cross drilled crank in a 6-71 Blown 454 since 1972, but I run 20-50 weight Castrol mineral oil. Motor was in a boat that did lots of lake racing. When I rebuilt it after 200 hours of run time the bearings looked like new.

I like Mobil 1, but not 0 or 10 W for anything blown. JMO.

Tom G.
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Offline SPARKY

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #1444 on: November 26, 2012, 11:25:54 PM »
I like Mobile 1  I had bad experience with the lighter stuff
Miss LIBERTY,  changing T.K.I.  to noise, dust, rust, BLUE HATS & hopefully not scrap!!

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Offline 38flattie

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #1445 on: November 30, 2012, 02:47:43 PM »
WZ JUNK  does some cool stuff with fiberglass! :cheers:


He's been working on the aero mods for us. Here are the fender mod mockups, and the plug he just finished for the air inlet!
« Last Edit: November 30, 2012, 03:41:07 PM by 38flattie »
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 38flattie

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #1446 on: December 05, 2012, 07:10:42 AM »
From Randy Jackson Last night:

Well folks progress is happenin on the flatcad. No more door hinges or handles sticking out slowing this thing down and here are a couple pics of progress i have a bit more work to do but the hinges are installed and the the doors open shut and hopefully if all goes well this evening the custom push button handles will be installed later tonight stay tuned big progress is right around the corner.
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 #1447 on: December 05, 2012, 07:47:46 PM »
Buddy --

Let me know how much those hinges are worth.  That may be my chance to regain the record -- I'm only 20 MPH short after having it four years ago.

Stan
Past (Only) Member of the San Berdoo Roadsters -- "California's Most-Exclusive Roadster Club" -- 19 Years of Bonneville and/or El Mirage Street Roadster Records

Offline 38flattie

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #1448 on: December 06, 2012, 11:58:53 AM »
Buddy --

Let me know how much those hinges are worth.  That may be my chance to regain the record -- I'm only 20 MPH short after having it four years ago.

Stan

Probably won't make much difference, but it makes me feel like we're doing everything we can! :-D


From WZ JUNK:

I am making progress but it is slow. See attached picture. I have had various little problems that had to be solved. The plug for the air intake is done and I made an indexing rotisserie so that I could rotate and hold the plug while I apply the gel coat and then lay up the fiberglass. I will leave it on the plug for a few days before I remove the plug. We should have a part for a trial fit next week.

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 Roseville Carl

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #1449 on: December 07, 2012, 09:00:37 PM »
Lookin great Buddy :-D
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Offline BoredAndStroked

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #1450 on: December 09, 2012, 09:25:41 PM »
Design Work - Crankshaft Girdle and Main Caps - Version 2:

Buddy, Don and I have been chatting about making some updates to the crankshaft girdle - to make it even stronger.   I've made major updates to the middle cap (to a splayed design) and widened the front as well.  Also, there will be big dowel pins between the tops of the caps and into the bottom of the girdle and there will be cap alignment dowel pins put into the block to ensure that nothing can move.   In addition, the caps will now have big 1/2 NF bolts to torque them to the girdle - we only had a 'crush fit' in the last design.  All of this is to make things stronger and even more rigid.

I do not believe that we experienced any 'cap walk' with the previous design, but we're going to push it harder next year and we decided to add as much lower end strength as we can muster.

Here are some pictures of the new design . . . now Don gets to 'make some chips' and whack some new caps out of steel.

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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 38flattie

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #1451 on: December 11, 2012, 10:58:08 AM »
I've been working with Cometic to get custom gaskets for The FlatCad, as I really dislike the copper gaskets.

We received the prototypes- They need a little refining, but this should help us out!
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 38flattie

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #1452 on: December 14, 2012, 10:15:05 AM »
From WZ JUNK:

Attached is a picture of the air intake.  This one is a reject as the gel coat reacted with the covering I had on the plug mold.  I will actually use this part as the new plug mold.  This part is a little long but I will be trimming it down when I make the outside of the scoop.  It will probably start just directly above the grille.  A little progress and a setback.
 
  :cheers:
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 jimmy six

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #1453 on: December 14, 2012, 10:28:54 AM »
I had a similar one on my 40 Chev when I ran it in the 70's. Always worked.

Not positive on this but on a roadster anything infront of the grille shell could not taper on the outside. Inside the scoop it didn't matter. A few guys had to do a little revamping after they had spent time with their scoop as they missed that in the rules definition. The taper only comes into effect on what sticks out infront and not on top. As I remember it was limited to 12" also.....Looks Good....JD
First GMC 6 powered Fuel roadster over 200, with 2 red hats. Pit crew for Patrick Tone's Super Stock #49 Camaro

Offline 38flattie

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #1454 on: December 14, 2012, 10:45:32 AM »
JD,

Thanks for the advice! The rules say "shall not extend more than 12 in, and shall not taper, except in classes where forward streamling is allowed."

We are only going to run this setup in comp coupe, where forward streamlining is allowed, so we should be perfectly legal.
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