V4 Dodge

[Milwaukee Midget]

Well all of this is getting interesting, so let me post this question -

What are the bore centers on the DoBro?

I'm thinking looking overseas - maybe a diesel Benz head, or a Toyota Century Hemi head? 

[Milwaukee Midget]

http://www.google.com/imgres?q=toyota+century+hemi&hl=en&sa=X&qscrl=1&nord=1&rlz=1T4ADRA_enUS368US368&biw=1191&bih=554&tbm=isch&prmd=imvns&tbnid=XKGQNYfwRQUPYM:&imgrefurl=http://www.choppersaustralia.com/forum/viewtopic.php%3Ff%3D52%26t%3D5042&docid=FAw79RykZIdW2M&imgurl=http://i144.photobucket.com/albums/r166/Warpspeed_photos/toyotahemi.jpg&w=600&h=400&ei=tx3xTr2nHejz0gHF0MGGAg&zoom=1&iact=hc&vpx=525&vpy=245&dur=2611&hovh=183&hovw=275&tx=151&ty=167&sig=115817010254572895338&page=2&tbnh=154&tbnw=200&start=19&ndsp=10&ved=1t:429,r:7,s:19

[38flattie]

Got me wondering what might fit a stovebolt...............hmmmmmmmmmmmmmm?

Trent, just remember the rules are different for the stovebolt. That will run as XO, correct? That means you cannot use an adaptor plate, and must use the head bolt stock locations in the block.

[4-barrel Mike]

Chris:

Top (?) entry here: http://www.facebook.com/group.php?gid=111622005544952&v=wall

Unblown Fuel Modified Roadster - /FMR
V4  Aardema Eyres Braun  S. Goetz   08/09  172.427

Mike

[Tman]

Got me wondering what might fit a stovebolt...............hmmmmmmmmmmmmmm?

Trent, just remember the rules are different for the stovebolt. That will run as XO, correct? That means you cannot use an adaptor plate, and must use the head bolt stock locations in the block.

XXO like our friends from Montana 

[V4F STR 60]

I'll have to dig out the rule book.  For some reason I thought you couldn't use OHC in Vintage Classes, but I must be wrong.

If you can, that would be SWEEEEEET!  Hmmmmm...

[38flattie]

Trent, XO/XXO, same rule applies.

V4F STR 60, I do believe you are right about the OHC.

[zenndog]

Got me wondering what might fit a stovebolt...............hmmmmmmmmmmmmmm?

Maybe this isn't a stove bolt but, check this out. When I saw this I sent Rich an e-mail and he knew all about it.

http://www.racingstudebakers.com/foo/viewtopic.php?f=19&t=2195

So the answer to your question may be....a small block chevy head and a half.

Milwaukee- 1 & 2/3 & 4 are around 4.625", I don't have notes on the center with me right now but 2 & b3 bore spacing is over 5.5", I think it is actually 5.750"

That is one of the big problems with putting "modern" OHV heads on early motors. The center bore spacing is always larger.

Rich can talk specifics but the Ford Y block head he put on the Plymouth did not line up with the bores, everything was a little off.

I personally find it more interesting to fit odd parts, while it is probably more effective to just engineer a head for the motor, I like the idea of using a original head and mounting it to the wrong engine.

Just to clarify, the only reason I have been thinking of this is because Rich has an engine ready to go, we talked about maybe making a flat head for it but he already drilled out the valve guides. Rich had the idea of making something like a Kong head where the relief was in head rather than the block. In my humble opinion, both the ideas we have discussed take advantage of the very unusual "pop up" pistons Rich needed to use for the morton & Brett head.

We will se what happens, first the engine needs to be in the roadster and the the car needs to run with the Morton & Brett

The pics Rich posted of the Pontiac head are what is great about Rich. We talked on Saturday when I was there to work on the Dodge and he pretty much said he didn't want to run another Frankenstein OHV engine, then look what he does on Monday, cuts up the head. Probably to prove to me it was a bad idea, maybe because he was curious, maybe a little of both!

I don't know if any of you know this but most of Rich's intake and header flanges are cut from a huge 3/4" thick pipe that Caltrans dug up when they built the sound wall behind his house. Caltrans left a big pile of flame cut chunks. He flattens a piece out with his hydraulic press and then machines it flat on his mill, then machines the flange.

[maguromic]

I'll have to dig out the rule book.  For some reason I thought you couldn't use OHC in Vintage Classes, but I must be wrong.

If you can, that would be SWEEEEEET!  Hmmmmm...

OHC is legal in V4, Pete's new engine is a 3 valve DOHC that makes roughly 340 hp at the rear wheels on the dyno.  Tony

[38flattie]

Zenndog, I may be wrong, but I don't think that engine is legal for Bonneville When I checked, I could add additional head bolts, but I had to use the existing locations also.

Good to know Tony! V4 also allows an adaptor plate from the head to the block, not allowed in other engine classes-I tried to get past that, with a 3 piece head, but was denied!

[4-barrel Mike]

Overhead cam conversions have a long history in V4 racing: http://www.youtube.com/watch?v=hFDq9Bfl9zA

  

Mike

[V4F STR 60]

I was wrong~

2.A.1 Overhead cam specialty cylinder heads are not allowed in the XF, XO, XXF, & XXO engine classes.

I think a trip to the junkyard is in order!

[Tman]

Trent, XO/XXO, same rule applies.

V4F STR 60, I do believe you are right about the OHC.

SO!? I got a welder and a wild imagination! I was out in the shop (BEFORE THE CHAT WHICH YOU HAVE BEEN TARDY ) measuring a banger and some heads. Zenndog has the right idea in more ways than he knows. Crazy fools we are.  

[Tman]

I was wrong~

2.A.1 Overhead cam specialty cylinder heads are not allowed in the XF, XO, XXF, & XXO engine classes.

I think a trip to the junkyard is in order!

But you are looking at Vintage classes, not Special Construction, no?!

[38flattie]

Trent, I'm not trying to imply that Zenndog is wrong, hell-I love the idea!

I'm just saying that in XO/XXO, it's not the same as in V4. It's a lot easier to modify a OHV head when you can use an adaptor plate, and not the original bolt holes.

Of course, if you didn't have to worry about the water passages, it would be somewhat easier to drill the head to match the block.

Just saying....

As for special construction, since the engine is XXO, would not the vintage engine rules apply?