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#1 Posted : Tuesday, 19 April 2005 4:23:46 AM(UTC)
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hey all.
i woundering if any one is running straight gas with
carby not injected
i know its cheaper but is it healthy for the engin and is there
a big difference in power?
i know gas has a higher octain so its burns better then fuel
but i just want some advice on the pros/cons about running straight
LPG on a 308 or 253.

im now looking at all options befor doing anything with my engine
so i can work out whats best for me.
Thanks :)
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#2 Posted : Tuesday, 19 April 2005 6:37:27 AM(UTC)
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It won't hurt the engine if you fit hardened seats and quality exhaust valves, preferably stainless. 253/308 heads seem to handle LPG better than say Chev heads. I've never had any recession problems or even guide problems like I have had with Chevs. My t
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#3 Posted : Tuesday, 19 April 2005 7:18:25 AM(UTC)
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Thanks mate.
your information is going to good use.
i think i might be going the full gas way.
thanks again.
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#4 Posted : Tuesday, 19 April 2005 5:41:30 PM(UTC)
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LPG is 102oct so with the right set up you`ll be cruisin.
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#5 Posted : Tuesday, 19 April 2005 8:07:07 PM(UTC)
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hi im currently running twin 225 lpg mixers on my 208 stroker with a t3 hybrid turbo if you set up your engine to optimise the the lpg's advatages you will infact increase hp over standard unleaded carb engines my father inlaw runs a s/charger 265 on stra
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#6 Posted : Tuesday, 19 April 2005 9:12:49 PM(UTC)
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What do you mean uni gas???
I live in Perth?? Is this another term for gogas??? not sure??
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#7 Posted : Tuesday, 19 April 2005 9:39:32 PM(UTC)
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unigas is a brand that some sevice stations in syd buy there gas from normally caltex or independent service stations if unigas is not available in your area look for service stations that have very small obove ground LPG tank as these are normally filled
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#8 Posted : Wednesday, 20 April 2005 6:01:50 AM(UTC)
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Thanks for all ur help ..

now its time to start getting everything set up for straight gas

Can any one point me in the right place to get wat i need (mixes ,ect...
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#9 Posted : Wednesday, 20 April 2005 6:40:41 PM(UTC)
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I’ve also been looking into running my 5.0 Lt Vt on LPG. After some research I’ve been told the following (note these are worst case scenarios), power loss up to 10 % much less to negligible for newer cars, extra litres of gas required for same distance t
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#10 Posted : Thursday, 21 April 2005 4:28:10 AM(UTC)
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Thanks mate for the info

i got to look into it more with my mech, to work out me future

plans and take it from ther
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#11 Posted : Thursday, 21 April 2005 5:37:17 PM(UTC)
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My son drives my old HG Prem 308 which has been on straight gas ever since we put the 308 in. The motor had a second hand set of stock yella terra heads which I picked up for $50, a small gas cam, impco straight gas carby,extractors and electronic ingit
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#12 Posted : Friday, 22 April 2005 5:45:00 AM(UTC)
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"gas research" do straight gas carby's. infact i dont know anyone one else that makes em in oz? Dual fuel will lose power due to having to restrict the airflow to create vacuum to suck the gas in.
plus sacrifising timing etc to allow it run on ulp too.
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#13 Posted : Friday, 22 April 2005 5:47:37 AM(UTC)
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here is a pic of one setup on a later model V8 (VR-VS)
http://www.gasresearchpc.../grpc_pic_gallery_8.html

DO NOT WRITE BELOW THIS LINE


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#14 Posted : Friday, 22 April 2005 7:37:06 AM(UTC)
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check out the tripple 225 impco's on my father inlaws 265 hemi before it was supercharged these are also straight lpg mixers (carby's) http://members.optusnet.com.au/cut55/gallery.html
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#15 Posted : Friday, 22 April 2005 3:38:37 PM(UTC)
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i installed a single throttle bodied gas research set-up on my 308 tonner a few years back, removed fuel tank etc. i mounted the convertor as close as possible to the throttle body to get the best performance. least i hope it has !
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#16 Posted : Friday, 22 April 2005 5:28:57 PM(UTC)
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distance from converter isnt as important as location ie below radiator to stop freezing and lying flat so as diaphragms have little movement under heavy accelerating braking and cornering and having a converter big enough for the job hope the info is use
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