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Gas advice for Range rover 3.9

General Tech Talk

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Gas advice for Range rover 3.9

Post by schuler »

Hi Guys, going straight gas on my Rangie, i have a series 2 disco inlet manifold with the long runners for good torque, interested in feedback on what CFM gas research to install and if there is anybody who can supply me new product ( i would rather support OL members than just the local guy) any feedback will be appreciated.

The Rangie has 4:11, maxi front and rear 35 centipedes, 6 point cage, the truck is being built for hard social drives maybe comps down the track.

Cheers

Steve
86 Rangie, F+R 4:11 Maxi, 35 Pedes, 6 point cage, Comp High Mount
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Post by Micka »

We went with Gas Research Australia for converting the 3.9 in our buggy to straight gas.

They built us a custom manifold to suit, too.

This is their site... www.gasresearch.com.au

We added MSD Ignition as well and the combo is IMHO far better than running the Rover ECU and EFI.
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Post by schuler »

Thanks Micka, any pics of the manifold?? what size carby? What is done to your engine and how do you use it, big revs??
86 Rangie, F+R 4:11 Maxi, 35 Pedes, 6 point cage, Comp High Mount
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Joined: Wed Sep 01, 2004 8:21 am
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Post by Micka »

I will get a heap of pics of the manifold for you.

Until then...here are some links of pics on our website..

http://www.rockhammerracing.com/index.p ... rentPic=13

http://www.rockhammerracing.com/index.p ... rrentPic=1

http://www.rockhammerracing.com/index.p ... rrentPic=7

http://www.rockhammerracing.com/index.p ... rentPic=32

Obviously we use this for rock crawling, so the revs go from idle to full noise, and everywhere between. The main reason we changed was to eradicate the idle problems and crappy Rover ECU.

The mainfold on the engine in the pics is from a carbie 3.5 - I think - and Gas Research have built us a new one that we have not put on as yet. I will get some pics of that and post them up for you.
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Post by shakes »

a rough price would be good too micka
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Joined: Sat Jan 15, 2005 9:29 pm
Location: Dandenong Ranges

Post by schuler »

Thanks Micka,

what size is the carby? I am trying to decide between a 400cfm and a 440cfm, so having feedback from someone using one would be good. I assume you wouldn't have large throttle percentages for long periods of time rock crawling? more blips of the throttle, would this be an accurate assumption?

Thanks for your help and also shakes is correct any pricing anyone can give would be good.

Cheers, thanks guys.

Steve
86 Rangie, F+R 4:11 Maxi, 35 Pedes, 6 point cage, Comp High Mount
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