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PostPosted: Wed May 29, 2013 10:34 am 
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Joined: Fri Sep 26, 2008 10:04 am
Posts: 237
Location: Perth Australia
Dammit i cannot edit a old post...

Well these are both revised...

For a g161z virgin motor TX early head and a very mild (slightly more lift than standard) the jetting was as follows to get it near on perfect, with electric ignition from turbogemini it will idle with aircon on

Primary air jet 160
Secondary air jet 175
Primary fuel jet 145
Secondary fuel jet 160
Emulsion tube primary F5
Emulsion tube secondary F5
The idle air jets??? Primary 55
Secondary 55
Pump jet, not played with.

This runs a dream with standard timing and extra 4 degrees of mechanical advance (dizzy plate gap of 12mm) THIS HAS BEEN REVISED TO FIGURES ABOVE, Much nicer again.

My G180 with standard head, mild / stage 3 crow cam, turbogemini electronic ignition + timing set to 14 + mechanical with no vac advance, and total advance of the same as above has the following jets and feels good but i think it has a blocked secondary after the drive today. and maybe could go a smaller air jet in the secondary or bigger fuel jet.

Primary air jet 160
Secondary air jet 170
Primary fuel jet 150
Secondary fuel jet 180
Primary emulsion tube F5
Secondary Emulsion tube F5
Idle jet primary 60
idle jet secondary 55


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 Post subject:
PostPosted: Wed May 29, 2013 10:37 am 
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Joined: Fri Sep 26, 2008 10:04 am
Posts: 237
Location: Perth Australia
Quote:
Primary air jet 160
Secondary air jet 170
Primary fuel jet 150
Secondary fuel jet 180
Primary emulsion tube F5
Secondary Emulsion tube F5
Idle jet primary 60
idle jet secondary 55


I forgot to mention exhaust is done now with 2 inch straight with highflow straight muffler and resonator.

This will be getting dyno'd very soon to get a picture of AFR and see how even the curve is. Hopefully pretty good, Then will get a revise once computer controlled ignition goes on.

Hopefully can get a small dent on the list of NA gemini motor's for HP and 1/4 mile :)


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 Post subject: Re: Weber 32/36 Conversion to a Gemini
PostPosted: Wed Aug 28, 2013 6:59 pm 
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Joined: Wed Aug 28, 2013 5:47 pm
Posts: 4
I have just had my Gemini at the mechanic to install a Weber 32/36 DGAV carby. I gave him the adapter plate but he tells me he can't put it in because the master cylinder is in the way. Looking here I'm not sure he is right. Can anyone advise on this?


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 Post subject: Re: Weber 32/36 Conversion to a Gemini
PostPosted: Wed Aug 28, 2013 7:46 pm 
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Joined: Mon Jul 12, 2010 6:55 pm
Posts: 193
Location: Melbourne.
RedGemini wrote:
I have just had my Gemini at the mechanic to install a Weber 32/36 DGAV carby. I gave him the adapter plate but he tells me he can't put it in because the master cylinder is in the way. Looking here I'm not sure he is right. Can anyone advise on this?


Some people put spacers on the drivers side engine mount to tilt it a little bit. Or use the remote res TX brake master cyl.
Haven't done the conversion myself, but that's why I remember from reading about it. Sure it's been covered before somewhere.

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 Post subject: Re: Weber 32/36 Conversion to a Gemini
PostPosted: Tue Sep 03, 2013 11:06 pm 
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Joined: Wed Jul 19, 2006 7:55 pm
Posts: 1670
Location: Perth
Quote:
Some people put spacers on the drivers side engine mount to tilt it a little bit. Or use the remote res TX brake master cyl.
Haven't done the conversion myself, but that's why I remember from reading about it. Sure it's been covered before somewhere.


Thats for twin weber conversions... you should not have any trouble fitting a 32/36 to a Gemini? do you have a pic of your engine bay? Does it have the stock master and booster?

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 Post subject: Re: Weber 32/36 Conversion to a Gemini
PostPosted: Tue Sep 10, 2013 5:59 pm 
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Joined: Tue Jul 25, 2006 11:09 pm
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Location: Brisbane:- 1.5bar above you
is he putting the adaptor plate on 180 degrees out

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 Post subject: Re: Weber 32/36 Conversion to a Gemini
PostPosted: Thu Feb 13, 2014 12:15 pm 
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Joined: Thu Jun 02, 2005 7:54 pm
Posts: 45
Location: Gold Coast
What power increase would you see over a Nikki in a High Compression G161 with extractors?
Would it be significant? ie 10HP?

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 Post subject: Re: Weber 32/36 Conversion to a Gemini
PostPosted: Mon Feb 17, 2014 12:46 pm 
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Joined: Tue Apr 10, 2007 3:46 pm
Posts: 1855
Location: Brisbane
Not a significant power increase. The cam and the flow of the head are limiting factors.

The secondary throttle on a weber is mechanically actuated as opposed to the Nikki vacuum actuated so it is more likely to give you the power when you need it. They are ecomonical when tuned correctly and don't have annoying idle stop solonoids to fail on you.

Nikki are all getting old and shaft wear is an issue becasuse the shafts are not bushed. Shaft wear can make a Nikki hard to tune to a smooth idle.


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 Post subject: Re: Weber 32/36 Conversion to a Gemini
PostPosted: Wed Mar 19, 2014 2:05 pm 
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Joined: Mon Sep 09, 2013 2:22 pm
Posts: 34
Location: Utah, USA
I'm looking for jetting information like this for a Hitachi 2 barrel as used on a Chevy LUV. any ideas?


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 Post subject: Re: Weber 32/36 Conversion to a Gemini
PostPosted: Tue May 15, 2018 1:11 am 
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Joined: Sat Sep 08, 2007 6:26 pm
Posts: 5
Location: Vic Australia
thread mined for future usefulness?

My car was dyno tuned recently,

G200Z, small port G200Z head, 2507 crow cam, extractors 2.25" into 2" muffler and resonator with 32/36 weber.

primary idle jet 50(fairly sure these were the other way round in the cortina carb originally)
secondary idle jet 55

primary main jet drilled to 144(was already soldered and drilled)
secondary main jet drilled to 149(was already soldered and drilled prior)

car made 70rwkw at 5500rpm on 98 fuel (base timing at 19deg i am fairly sure)
https://i.imgur.com/P9rSfQ9.jpg
https://i.imgur.com/Idq9I0u.jpg
https://i.imgur.com/0PDjGxQ.jpg


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 Post subject: Re: Weber 32/36 Conversion to a Gemini
PostPosted: Wed Aug 22, 2018 8:54 am 
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Joined: Wed Sep 28, 2005 11:55 pm
Posts: 2680
Location: Melbourne, Victoria
Nice work on hiding it under the factory air filter and thanks for putting the jet sizing up

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 Post subject: Re: Weber 32/36 Conversion to a Gemini
PostPosted: Thu Aug 23, 2018 12:28 pm 
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n00b

Joined: Sat Sep 08, 2007 6:26 pm
Posts: 5
Location: Vic Australia
cheers!
was so hard to find any jetting sizes just to get My other carby running ( weber 34ADM off falcon) that anything was worth trying(150 primary for starters is close)
with only slight mods to the air cleaner base, the 34ADM also fits this air cleaner setup.


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