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Guest Message by DevFuse
 

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weber jetting for dual-fuel EJ18?


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8 replies to this topic

#1 LPGsuperchargedBrumby

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Posted 08 December 2007 - 02:54 AM

would a weber jetted for a ea81/82 be able to be used on a EJ18(in a brumby) or would i have to rejet it?

the reason i ask is that i have moved to an area that LPG is rather scarce...like 3 pumps over a 1000km of main road:mad:....so i'm going to have to go dual-fuel and thought that a weber would be a good carb to use.

(as a side note for anyone that knows the timeing differences needed between Petrol and LPG....i have an idea for altering the timing at the same time as you change fuels so cunning you could pin a tail on it and call it a fox.....involving a solenoid and a lug welded onto the dizzy.....)

#2 Reveeen

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Posted 08 December 2007 - 03:32 AM

Should be close, try it and watch the plugs (colour).

#3 monstaru

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Posted 08 December 2007 - 10:18 AM

mmmm)rubbing hands together maniacally...............duel fuel ya say.they say that a 32/36 is good up to like 2400cc. or so.that is the first carb i out on the ej22 i built.on the brat i had stock from the factory jets like 140/155 or something like that.switched up one set to like 150/165 and it was to much fuel.i'm betting you could run stock jets and it would do fine on a 1.8.

going up on my jets resulted in a very rich nature.lots of blue smoke.:grin: i would suggest ordering one new with factory direct settings for an ea82 and going from there.

if you really want to play the jet set is like 65 us on the bay of "e".

i made a manual advance for my disty,didn't think of putting a solenoid on it for adjustment ,thanks.i may have to do that.let em know if you need a fresh mind to wrap around the disty stuff.the better half of the last year was spent messin with'em for the ej22.(not like your not capable:lol: )i'm just bored...........cheers,brian

#4 LPGsuperchargedBrumby

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Posted 09 December 2007 - 02:11 AM

thanks....that kinda confirms what i had thought...a 1.8 is a 1.8 so even with twice as many valves it should still draw roughly the same amount of air/fuel.

on the dizzy side of things i'm running two possible ideas, one is to use a solinoid to move the dizzy round.... the other is to use a two way vacuum actuator like the one for the difflock on a RX box.

whatever i use its going to need some grunt as my dizzy is rather stiff

#5 Matty B

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Posted 09 December 2007 - 07:11 PM

Turbo wategate acutator would be worth a look,
My TD05 one is so stiff I can hardly move it.

Boosts a treat though, might do the job for you.

#6 LPGsuperchargedBrumby

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Posted 10 December 2007 - 03:04 AM

Turbo wategate acutator would be worth a look,
My TD05 one is so stiff I can hardly move it.

Boosts a treat though, might do the job for you.


LMAO....the other idea(not really serious though) i had is to use a pnumatic ram and have a small compressor and air tank underneath the front of the tray.....which would allow me to move the dizzy while the blower isn't switched on....but a wastegate actuator would be a whole heap cheaper than a proper air ram and means i could run low pressure air

#7 Skip

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Posted 10 December 2007 - 11:31 AM

I used the old KISS principle to make my
ignition timing adjustable from the cockpit.

A manual choke cable.
The one I choose has a "turn to lock"
feature found on the British A series engines.

I mounted a "L" bracket around the dizzy and
connected the cable to it.
I did sand the circumference of the shaft a bit to
allow it to rotated more freely.
Posted Image

#8 archemitis

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Posted 10 December 2007 - 12:41 PM

I used the old KISS principle to make my
ignition timing adjustable from the cockpit.

A manual choke cable.
The one I choose has a "turn to lock"
feature found on the British A series engines.

I mounted a "L" bracket around the dizzy and
connected the cable to it.
I did sand the circumference of the shaft a bit to
allow it to rotated more freely.
Posted Image

that engine compartment looks like the opposite of simple skip!:lol:

#9 daeron

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Posted 11 December 2007 - 02:36 AM

that engine compartment looks like the opposite of simple skip!:lol:

He didn't say he used the KISS principle anywhere else, just in the design of his timing control... :lol:

that picture is always a treat, though. Well-designed.




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