Air Fuel Gauge

[Peted7202]

Has anyone installed an Air Fuel Gauge?

[Sleeper]

Me.

Am doing a little " Needling" at the moment...most helpfull.

Manifold DSC04315.JPG (311.1 KiB) Viewed 5793 times

Just used the exhaust part of the manifold.

John ;-)

[geoberni]

Far too modern a device to consider fitting.... I actually had to look up what you were referring to..

[59Elva]

John,
Is that bung brazed in? Any possibility of it becoming un-soldered from exhaust heat?
What manifold is that and what carb are you using?
I have a 1275 struggling to breathe through a single HS2. I figure I need two of them or a HS4 or 6. I’ve got some parts on order to try to improve the situation. The exhaust is probably the tricky part.
What else is involved with your setup?
Thanks,
Bill B

[myoldjalopy]

Far too modern a device to consider fitting.... I actually had to look up what you were referring to..

Yeah, and a pity it doesn't mean that the car runs on fresh air!

[Sleeper]

Used to have a Lotus Elan with EFI, Megasquirt, WBO2 etc
Bung welded in , at the moment HIF44 on seperate inlet and exhaust manifolds ( just cut them apart ) , the exhaust I am using is the standard MM one ( albeit stainless ).

DSC04408.JPG (328.15 KiB) Viewed 5632 times

John ;-)

[59Elva]

Thank you John,
So is that a 1098 manifold? I wasn’t aware that there was a stainless version. Ive only ever seen cast iron. I have a Minispares Torquemaster intake manifold on order from Ol Phartz Parts and an HS6 that I think is rebuildable. I don’t know what it was from or what needle is in it.
Am I correct in thinking I need about a 1-1/2” exhaust pipe and silencer. I was told by Steve to look for a 1098 exhaust manifold because the Sprite 1275 manifold is tall and angled the wrong way.
Bill B

[les]

Welding cast iron is not easy, well done with the success.

[Sleeper]

The Ex manifold was the largest standard one I could find ( cheap) maybe Ital? .. Not stainless, just cast and polished out the weld . The exhaust system is a " standard " stainless system.

John ;-)

[Peted7202]

Me.

Am doing a little " Needling" at the moment...most helpfull.

Manifold DSC04315.JPG

Just used the exhaust part of the manifold.

John ;-)

Thanks. Are you using the AEM kit?

[Sleeper]

No, it's from the Megasquirt ,it's a WBO2 kit..

https://wbo2.com/

John ;-)

[MikeNash]

May support and expand on Peted7202’s original request?
I now know of three parties of this parish who have fitted air/fuel measuring kits, namely Sleeper, Kevin S and Rob Thomas, each a “Minor Legend” and who in the past have been free with valuable advice which I’d like them to expand to cover their air/fuel measurement experiences.
Which kit to fit? There seem to be kits now under £100, but are they reliable and good enough? What pitfalls should we be aware of?
I eagerly await your advice, MikeN.

[les]

Could someone explain this air fuel gauge, what does it do and what is the point. Sorry I’m at a loss, is it like a vacuum gauge.
A full breakdown of this thing would be appreciated. It’s just been dropped into a thread with no explanation.

[Sleeper]

Les

It's an Air Fuel Ratio gauge , lets you know how rich/lean you're running , good for tuning ones mixture in a " live " scenario... I once had a Lotus Elan Plus2 , lovely car..after using an AFR gauge acheived an extra 10 mpg with no loss of performance.. am now using one to try altering needles to achieve minimal fuel waste..


John ;-)

[59Elva]

John,
I hope to install a HS6 on my 1275 ‘59 pickup with a modified Spridget exhaust manifold. 1-1/2” or 1-5/8” exhaust pipe. I would be very interested in your findings.
Thanks,
Bill B

[les]

Thanks John !