I was wondering if anybody out there with an XD/E/F has been to gas research and what did you all have done to your cars.
A friend of mine wants to spend a bit on his LPG XE monty(completely stock with new gas tank), and we're thinking some GR gear might meet a good place to breath some life into the old 250 crossflow (alloy head). cam, carbs, zorst, whatever works well.
Any tips you guys can give are greatly appreciated.
I had the GRA system fitted to my old car (XF Fairmont) with pretty good results. Made alot more power than either gas or petrol did on the previous duel fuel setup. Make sure you take along an XF EFI intake manifold when u go as you'll get a good gain just from that (looks cool too).
I had an 4.1 XE Carby. I took it to GRA for a straight gas conversion. I got The TB, and all that other stuff that comes standard with the kit (ie K&N). I also got extractors and a 2 1/4 Exhaust. it was much quicker than my mates XE 4.1 on gas (non GRA). It didn't go too badly, but in the end I bit the bullit and got an 8. Dunno if thats going to help you much though
The good thing about the GRA setup is that it's good for a forced application, therefore you're not shooting yourself in the foot later down the track. Keep your eye out for their turbo setup too - I'm waiting to see how their AU2 Forte test car goes in the summer with the turbo on it - it has water injection so detonation is less likely...but I want to see that put to the test hehe. Just my 2c
Thanks for the input guys.
Might have to source a manifold I think, but can you strill run the car as dual fuel, or only LPG?
Please keep it coming. If you happen to know, what packages would be good for another 20-30 kW?
I've heard good and bad about GRA systems. I think they get most of the improvement from increasing the compression ratio, advancing the ignition and the K&N etc. I reckon you could get the same from your dual fuel but it would be a pig on petrol. As long as you run it on gas 99.999% of the time (ie. other than at startup) then you should be OK without spending the $1200 or whatever they want from you to install their "special" TB.
Just be very careful and get more opinions first.
If it ain't broke don't fix it.
ahem ahem - just to clarify some of the above - I'm running a GRA Gold series TB and fuel converter. I'm running dual fuel no problems (except starting is not so good on gas, but this is a known characteristic). There hasn't been any change in comp ratio at all - I'm running everything stock in the engine.
creature3 : Where did you hear that you can only run dedicated LPG ? I'm curious to see whether I am not taking full advantage of my GRA setup by running dual fuel.
Tickford6 : An extra 20-30 kw hmmm - well GRA do *guarantee* 10% extra power gained - but hey, they didn't even dyno my car before they did the mods - hmmm indeed !
As for what works best with the setups - do the usual zorst, extractors, cold-air intake etc. As I said earlier, checkout the turbo option - worth considering IMHO.
Steve, do you reckon it might be better if he just put intake, cam exhaust on it? He doesn't want to spend all that much much and the car is not worth turbo charging. 10% more power is what, 10 kW on these old engines, so maybe the cam and extractors would be a better path?
Thanks heaps again for the continuiing input guys. Hop this proves worthwhile for someone else down the track too.
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