Advice/Options on Gas Systems.

[Danielson]

I am getting close to getting my XW 221 6 ute on Gas. I have some conflicting advice on which system to use. Some say go Sprintgas New Gen Mixer with an OMVL converter, another says go Impco L Converter with a 300 mixer and better still straight gas. Current head is a log although I will put my 2V on down the track carb is a XF Weber ADM34. I already have the impco parts from trades I have done. I cannot find an adapter to fit the 300 mixer to the weber. I have a long alloy snorkel that fits a holley but dont really want to use that setup.
If I go straight gas what is the best option as far as throttle bodys adapters and such. I want to keep $ down so I guess GRA is out.
Thanks for any help.
Regards Daniel

 

[Anonymous]

Gas Research setups seem very popular with the performance guys running gas, and I have heared nothing-but-praise from the guys using their gear.
http://www.gasresearch.com.au/
Their prices seem to have dropped from last time I visited their site so they could be worth another look and seeing as you are using an XE type carby I would think you should be able to use the XD-XF kit they sell.

 

[lyonsy]

hey
iam gettiing a straght gas conversion done to the corty using impco.
gra is now outdated and i whouldent use it as by the time you have its cost you could easly have gone gas injection for not much more.
you will probly find that they dont have many adapters for the little webber use a holly base.
a 300 mixer will probly be to large as well for the log but all right for the 2v.depending on what power your chasing.

 

[Danielson]

Had the conversion done last week. I settled for the straight gas using Impco L converter and 300 mixer which I fitted new kits through before the conversion. I made a custom adapter to fit the 300 mixer to the weber throttle bodies and used a stripped and plugged second throttle body as a spacer which was port matched to the adapter. The overall result looks good and works great, performance seems as good if not better than petrol. Overall drivability is better and my out of pocket costs a total of $195. I am yet to work out fuel economy but so far I have only done 65 miles and the gauge still reads full. I'll post more details here as they come. My thoughts are Go Gas..
Cheers Dan

 

[xctasy]

Great work!. I had an XE Falcon 4.1 carb sedan, auto, power steer, 2.77 diff. I had 39 000 km's behind a 300 Impco and L-series and 2-bbl throttle body, the performance was brilliant (better than the best EFI 4.1) and the fuel economy was initially very good. I used the ECI lean cruise power valve...not all of the L-series have them.



I intially use a Dodge D-50 318 V8 truck air filter (Std Impco AF-1), then decided to down grade to a smaller K&N one, as I was trying to package two CA 300 Impcos for another twin carb instilation I was working on.

I never got it retuned to suit, and fuel consumption fell from 22 mpg on the open road to about 18 on the open road. Untill I started playing around with the air cleaner, it was fantastic. In hilly Dunedin, fuel consumption was always about 16 mpg, although it dropped to 12 mpg with the other air cleaner, without having it re-tuned.