Hot fuel vapor carburetor

[He-man]

Originally Posted by oil pan 4

I have not tried to put this on yet.
With the ridiculously cold temperatures we have been having I need to at least try.
Only problem with putting this on is its about an inch thick and I am already running a much taller than stock edelbrock RPM air gap intake manifold and taller than stock edelbrock 650 carb.

Did you ever give it a try?

[solarguy]

If vaporizing carburetors made a significant or dramatic difference in fuel economy, then the vehicles/engines that were made to run on propane would have shown similar/dramatic improvements in FE.

they didn't.

Yes, even after accounting for the difference in energy density/BTU's etc, they just didn't.

Could it make some difference in driveability and a slight improvement in FE if all you do is short trips?

...maybe....

[oil pan 4]

I have not been able to work on it, been in Afghanistan lately and the engine I was going to use it on is at the machine shop.

Originally Posted by solarguy

If vaporizing carburetors made a significant or dramatic difference in fuel economy, then the vehicles/engines that were made to run on propane would have shown similar/dramatic improvements in FE.

they didn't.

Yes, even after accounting for the difference in energy density/BTU's etc, they just didn't.

Could it make some difference in driveability and a slight improvement in FE if all you do is short trips?

...maybe....

That's what I usually say.
And yes its more for winter and/or short trips.

[Beau]

When I first read the title of your thread I thought this might be about the vapor carburetor/turbo arrangement Smokey Yunick experimented (with rather spectacular results).

Pontiac Fiero Hot Air Engine Setup - Circle Track Magazine

http://www.hotrod.com/how-to/engine/...-vapor-engine/

http://www.eng-tips.com/viewthread.cfm?qid=78116

https://www.youtube.com/watch?v=Qg8oJXcWjnE

[RustyLugNut]

Originally Posted by Beau

When I first read the title of your thread I thought this might be about the vapor carburetor/turbo arrangement Smokey Yunick experimented (with rather spectacular results).

And welcome to the thread. But, the Smokey Yunick Engine has been discussed in other threads. Do a search and you should be able to find some. Also, some of our members have done on-going work that directly or indirectly touches on the subject. Iveyjh and PfgPro have posts on similar conceptual work, whether they know it or not.

Oil Pan4's work is less esoteric and more practical and less about over all fuel economy and more about cold weather drive ability and economy.

And thanks for the link to the Engineering Tips discussion. I was involved in that years ago and it bore some fruit if you have the background and temperament to dig through it all.

[oil pan 4]

This engine is getting lean burn, high compression 11:1, heated fuel, warmed air and likely water methanol injection.

[solarguy]

...eagerly await data...

[oil pan 4]

The Ford carburetor plate holes do not line up with the square bore.
I am going to examine it closer and see if I can drill the holes with out going onto the water jacket.
I want to try this so if the Ford carb plate isn't workable then I want to make one.

[oil pan 4]

Well I screwed up.
When looking for a way to make the carb plate line up by drilling holes I discovered it does in fact line up.
I thought those old fords used square bore carburetors and it turns out that they do.

The hose nipples were 5/8, rotted to about 13mm so they need to go. I will cut them off and drill then to fit what evet pipe thread tap is convenient and put 3/8 hose barbs on there.

[gumby79]

The plat appears to be designed to accommodate a Holly's front /rear fuel bowls and metering blocks. ?can you turn it 90° to accommodate Edelbrock's side and side bowls and jets .