Question on lpg dual fuel

[vintageholden]

my car was duel fuel and ran like crap
gas only is much better
gas is high compession 10.1
timming is more advanced
best to have one or the other

[BlackBedford]

G'day
I would recommend getting a GasResearch throttlebody and B2 condensor.
http://www.gasresearch.com.au/
You can pick them up on ebay from time to time. You will need to get it tuned properly, so find out if there is a Gasresearch agent nearby. I had to travel 400ks to get mine tuned. At least the return trip was fun.
To setup for Gas properly you need to modify the heads, valve seats, cam, and ignition.

I have a CFS van and a CFL Truck setup as follows:
blue 3.3 motor, ARP rod bolts, Voodoo gas cam, Yella Terra gas 12 port head, Yella Terra roller rockers, EFI manifold, Gasresearch throttle body, and ICE Ignition Systems distributor.
I run fairly high compression and I have Bosch reduction gearbox starter motor. I have also made and installed a knock indicator for when I occasionally get a tank of bad gas (not got one locally though). The knock indicator was made from a VP knock senser and bits of the memcal installed in an old Smiths gauge. So don't throw out all of the electronics.

Performance and economy are really good. People still think I am running around in a V8.
I have been using this setup for over 5 years, and a LOT of miles, without any dramas or retuning.
Pictures of the van motor:

[Warren]

Nice setup Chris.

Does the manifold fit under a standard engine cover or does it have to be modified ?

How come you run high compression, is that to rake advantage of the octan rating of the gas ?

Warren

[vintageholden]

LPG likes high compression about 10.1 or higher...took 30thou of the head..
i have gas cam.....high lift short duration..
efi dizzy regraphed for gas....goes better on gas that it ever did on petrol
impco 225 carby $150 .....cant afford gas reasurch......
did the setup myself from second hand parts from ebay
less than $400 all up

[Marishka]

hi all, found out the other day, the $2,000 refund from gov when installing LPG is on new fitted conversions, and the installer gives u the paperwork and the claim is made through medicare, lol, yeah freaked me out hearing it 2.
a friend of mine just got it done $2,100 for the system and fitting and getting $2,000 back, unbelievable hey, im gettin the SWB done.
marty

[BlackBedford]

G'day Warren

You will have to make a new engine cover and expand the hole on the drivers side.

Gas loves the high compression, as with any high performance motor the knock sensor is recommended.