Jet-A-Vator carb grid.

[MobilOne]

Sorry, I should have been more specific. My reference to carb icing was referring to the two carburators with heated screens. How much do those things cost?

[Isaac Zackary]

Originally Posted by MobilOne

Sorry, I should have been more specific. My reference to carb icing was referring to the two carburators with heated screens. How much do those things cost?

The EFEs might help reduce carburetor icing. But then again I do believe they are only for start ups. If you have carb icing I would think you'd need either a heat riser system or a heated air cleaner that pulls warm air off the exhaust (or an air-cooled head as in my case). My engine has dual heat risers and a heated air cleaner. But you can do a search on them. Looks like they run $100 USA and up. The non-heated Jet-A-Vator runs about $60 to $90.

Jet-A-Vator

[Isaac Zackary]

Any input on whether I should get the 20, 30 or 40% restriction Jet-A-Vator?

[jakobnev]

Tin cans, nail, hammer.

[wickydude]

Smells like unicorn dung
Restrict the fuel flow by being more gentle with the throttle and you'll also get better mileage.

[Isaac Zackary]

Originally Posted by wickydude

Smells like unicorn dung
Restrict the fuel flow by being more gentle with the throttle and you'll also get better mileage.

Any thoughts as to why all those that I know who've put this thing on their car have noted it improves starting and smooths out any poor running? Is that a sign it does help atomize fuel?

[freebeard]

A lot of little holes create more turbulence than one big hole?

I'm reading between the lines here; a 34PICT with a[n exhaust] heated air cleaner? Is that 1302 in your avatar pic the vehicle in question? What color is it? Whose programmable ignition?

If you're not familiar, Hot VW's Mileage Motor series covered the Jet-a-Vator in part 10. It is here.

They reported a 10% improvement in mileage, testing revealed a performance hit they couldn't feel by seat-of-the-pants.

Edit: On a highly tuned dual port 1776 with dual carbs and a Freeway Flyer transaxle. They took it from 28 to 38mpg.

[elhigh]

In their Mileage Motor series (and I'm surprised I haven't been banned for referencing the article so often), HotVWs Magazine reported a pretty strong increase in fuel economy when the tested a similar device vs. the same engine without it. They also reported certain qualitative effects, which I disregarded.

HVW's testing methods aren't the best but I've seen worse.

[edit]

Hey! Freebeard beat me to it.

Anyway, there it is.

[elhigh]

Originally Posted by freebeard

They reported a 10% improvement in mileage, testing revealed a performance hit they couldn't feel by seat-of-the-pants.

Edit: On a highly tuned dual port 1776 with dual carbs and a Freeway Flyer transaxle. They took it from 28 to 38mpg.

A performance hit that was nonetheless on an engine that developed over 90hp on the dyno, if I recall - a big step up from stock and, as they reported, a helluva lot of fun to drive. The VW they were testing went from your basic slug to peppy bug while delivering excellent mileage, proof that economical doesn't mean slow.

[freebeard]

I'm betting Isaac Zackary reads the whole MM series (if he hasn't), based on his avatar.

I have a stroker 1776 sitting on the bench, built to the original Jon Karcey specs. (It's been on that bench a while) I wanted to link to the original VW Greats article but the trail has gone cold at Southernvolksfolks.com. Long story short, I used big valve heads thinking it would be propane-fueled truck engine, while HVW went with fuel injuction heads for the smaller intake valves. But I did find this: VW Type 1 Mileage Master MPG Engine Combo « VW Parts – Aircooled.Net