Technical Smith-Jiggers OHV Flathead

Most bonkers thing I’ve ever seen on a flathead.

 

looks like they converted it into an F head
and
What kind of contraption is that distributor?

 

Yes, intake uses stock valves but exhaust is now through the head. Magneto on the front is exactly like the one that Ryan had stolen.

 

Yes, it is an F head conversion...way cool if it was in someones car having the snot driven out of it

 

Jiggler, not jiggers ....

 

https://www.jalopyjournal.com/forum/threads/v8-60-smith-jiggler-heads.1263997/

 

I wonder if anyone knows how much of a HP increase you get with this conversion? Or is it just like putting chrome valve covers on an OHV engine.

 

Very cool
Dan

 

V8-60 parts ...Bangor, Pa C/L ad...
1937 ford - auto parts - by owner - vehicle automotive sale - craigslist
Not for the "frugal"!

 

so .... were these types of heads ever made for a full size flathead?

my search gave me 30 hits of "60" reference and most of them only single word references from 20 years ago.

thanks

sid

 

A long-gone racer-friend reported that he drove a V8-60 with a set of these, & while they didn't add that much HP, they allowed a lot more RPM.

 

And cooled better. Got the exhaust out of the block, and if you look closely at the head it doesn’t have any water around the exhaust.

 

c'mon guys. i had the courage to necromance this thread, somebody at least take a guess to make me feel wanted . . . .

 

Not to my knowledge.

 

Several vendors made "F" head conversions for full size flatheads (I believe Riley and Tornado were among them,) but they were actually quite different in configuration that these.

 

A further note : that racer friend said that the screws on the rocker covers had to be safety wired or they would vibrate out due to engine harmonics... This was in the early/mid 1950s

 

EOI engines are unusual. I'm not aware of any which aren't converted side-valve engines. IOE is common enough e.g. the Willys Hurricane etc. The most interesting one is probably Rover's, which featured a angled deck like on a Chevy W-engine.

The pic doesn't show the spark plug location on that Flathead. Engines like the Rover work well because the intake valve is over the quench area, and the hot exhaust valve is at the bottom of the combustion chamber with the spark plug close to it. Having the exhaust valve over the quench area is less than ideal. The only way to do that would be with a relatively low CR and a longish bathtub-shaped chamber, with the plug on the outboard side of the exhaust valve. That wants forced induction?