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Old 08-15-2016, 09:15 AM   #1
SofaKing
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Default Why would someone do this?

I drove out to Bonneville yesterday and among the many curiosities was this one. Any idea what's going on with the cylinder heads and intake? It's half a flathead, sort of.
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Old 08-15-2016, 09:28 AM   #2
bgarrett
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Default Re: Why would someone do this?

those people will try anything
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Old 08-15-2016, 09:34 AM   #3
Andy
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Default Re: Why would someone do this?

Trying to make a class. 4 cyl streamliner? Saw a rig once with a spark plug mounted on the firewall. Disconnected one cylinger to fit in a class.
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Old 08-15-2016, 10:20 AM   #4
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Default Re: Why would someone do this?

Yup,
Four cylinder record. If you look, the intake only goes to the hemi head, the "flathead" side is just a blanking plate. The plugs are installed in this dead side to "waste" the spark. Just pulling plug leads would have sparks doing al sorts of trouble in the ignition.
Interesting setup.
What speed it run?
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Old 08-15-2016, 12:24 PM   #5
Tim Ayers
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Default Re: Why would someone do this?

Dang, I don't know all the reasons, but hats off for some outside of the box thinking. What class did that car run in and any idea on it's speed/time?
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Old 08-15-2016, 01:29 PM   #6
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Default Re: Why would someone do this?

I wonder if this would have run better had they set it up to run two cylinders from each side rather than four from one side. Then, the question of which two from each side. Seems like you would have a smooth running V4 rather than an in-line four with gaps.
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Old 08-15-2016, 01:37 PM   #7
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Default Re: Why would someone do this?

You are correct. This is SofaKing weird.
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Old 08-15-2016, 02:12 PM   #8
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Default Re: Why would someone do this?

Probably no rods or pistons on the blank side.... Very interesting.

We've all seen the video of a flathead running with one head off. Kind of the same idea here.
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Old 08-15-2016, 02:41 PM   #9
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Default Re: Why would someone do this?

Jason/TX, Wouldn't eliminating a complete side bank of pistons and rods cause balancing nightmares?
I suppose anything can be fixed with enough bob weights and/or holes/relieving.
But I still have to imagine there would be major hurdles to overcome in balancing only one bank of an engine..
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Old 08-15-2016, 02:48 PM   #10
Jason in TX
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Default Re: Why would someone do this?

I would think keeping 8 pistons and 8 rods and having 8 working spark plugs would classify you as an 8 cylinder.

If the spark plugs were not firing, I would think you would be fighting the compression of 4 dead cylinders.

The crank may have been reworked to have a similar balance as a Model A/B 4 cylinder.... with the other 4 holes just handing out there. I'm not sure though as I'm just looking at this photo with no other info.



Quote:
Originally Posted by moefuzz View Post
Jason/TX, Wouldn't eliminating a complete side bank of pistons and rods cause balancing nightmares?
I suppose anything can be fixed with enough bob weights and/or holes/relieving.
But I still have to imagine there would be major hurdles to overcome in balancing only one bank of an engine..
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Old 08-15-2016, 03:03 PM   #11
Ross F-1
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Default Re: Why would someone do this?

I wouldn't assume it's a flathead block. Very likely has a custom crank.
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Old 08-15-2016, 03:41 PM   #12
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Default Re: Why would someone do this?

Don't look like a Flathead block, it's all different. Ignition placement, shape of the back of the block, head bolt pattern, all different.

The sparking plugs in the blank side I'd think do spark, but nothing in there to burn. No rods or pistons in that side. Just some plugs firing into a blind hole in the plate, thats how I think I'd do it.
If it has a flat crank (180 degree) it'll run like a four cylinder inline, with both heads on and a full set of pistons and rods, it'll run like two four cylinder inline engines.
If it has a 90 degree crank, it won't be a smooth engine no doubt, but it's the level of trying for two completely different class records with one car and one engine.
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Old 08-15-2016, 04:18 PM   #13
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Default Re: Why would someone do this?

Quote:
Originally Posted by scooder View Post
Don't look like a Flathead block, it's all different. Ignition placement, shape of the back of the block, head bolt pattern, all different.
Ah. Good call. I'm thinking Hemi
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Old 08-15-2016, 06:15 PM   #14
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Default Re: Why would someone do this?


Very unusual. Doesn't look very balanced?
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Old 08-15-2016, 06:17 PM   #15
Ross F-1
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Default Re: Why would someone do this?

Quote:
Originally Posted by scooder View Post
Don't look like a Flathead block, it's all different. Ignition placement, shape of the back of the block, head bolt pattern, all different.

The sparking plugs in the blank side I'd think do spark, but nothing in there to burn. No rods or pistons in that side. Just some plugs firing into a blind hole in the plate, thats how I think I'd do it.....
Martin.
Could it be a 337 flatty?

I wouldn't think it is a good idea to spark into an open cylinder, what with crankcase fumes being potentially explosive, especially if they are running on "fuel"!
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Old 08-15-2016, 06:28 PM   #16
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Default Re: Why would someone do this?

Quote:
Originally Posted by Ross F-1 View Post
Could it be a 337 flatty?
What makes you think it is a flathead of any type, looks like a hemi to me.
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Old 08-15-2016, 06:30 PM   #17
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Default Re: Why would someone do this?

196 IH four cyl was one bank of the 392 V8. Didn't run any rougher than any big four. 4 cyl Pontiac was also one side of the 389.
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Old 08-15-2016, 07:01 PM   #18
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Default Re: Why would someone do this?

Why would someone do this?

So he could brag about it to some other fella?
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Old 08-15-2016, 07:07 PM   #19
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Default Re: Why would someone do this?

To meet class requirements and still be able to use available high performance equipment. A local guy cuts Chevy V8s in half (ends up a v4) to use in midgets and you can bolt on all the Chevy HP stuff.
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Old 08-15-2016, 07:13 PM   #20
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Default Re: Why would someone do this?

I'm with JSeary...it's not a flathead. Although the head on the right is pretty flat Magnito in the back of the block and obviously 4 exhaust pipes coming out of the left head.
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