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Standard AU engine or AU E-GAS engine? 

 

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 Post subject: Standard AU engine or AU E-GAS engine?
Posted: Fri Jul 25, 2008 7:24 am 
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Hey all.

I've saved enough to get a mechanic to do an engine conversion.
I'm considering it atm since my 240 000 ED engine uses a lot of fuel.
(Before this I will be undertaking an E-GAS manifold BBM conversion.)

The car is currently on dual fuel, I intend for it to be straight LPG if this conversion happens.

I'm not sure on what engine to pick between the E-GAS or standard AU engine. The E-GAS is around 15kw less than the standard engine, does the E-GAS have far superior economy? Basically I'm wondering if there's any advantages running a straight E-GAS AU engine compared to a straight gas standard AU engine.

I'm on my P's so the car has to be P plate legal. I think I'm limited to 192kw. I want to make that power with mods that don't really make economy suffer (such as snorkel extractors, maybe T5 later down the track).

What would you recommend?
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Posted: Sat Jul 26, 2008 3:39 pm 
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no one seems to be able to prove the differences between E-gas and normal Au engine....

so id say just get a std AU eng as it will be cheaper because theyre more common

 

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Posted: Sat Jul 26, 2008 6:52 pm 
Getting Side Ways
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gogetta wrote:
no one seems to be able to prove the differences between E-gas and normal Au engine....

so id say just get a std AU eng as it will be cheaper because theyre more common


Thanks mate I'll get a normal one.

Car will be on straight LPG. I'm currently finishing sourcing parts for my BBM conversion. The E-GAS engines would use a dedicated gas manifold correct? Any advantage of using a dedicated gas BBM rather than plugging the injector holes with welsh plugs?
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Posted: Sat Jul 26, 2008 8:20 pm 
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the only thing that would really be important is if the E-gas runs different/better valves and seats.....I have seen no proof that it does

and i cant see why you wouldnt keep the injectors in place as its always nice to have a petrol backup as its very hard to top your car up with a jerry can when it runs out of gas

 

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Posted: Sun Jul 27, 2008 5:54 am 
Getting Side Ways
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gogetta wrote:
the only thing that would really be important is if the E-gas runs different/better valves and seats.....I have seen no proof that it does

and i cant see why you wouldnt keep the injectors in place as its always nice to have a petrol backup as its very hard to top your car up with a jerry can when it runs out of gas


Straight LPG gives a fair bit more economy doesn't it?

And some power.
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Posted: Sun Jul 27, 2008 6:45 pm 
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When you run a gas only engine you can tune the engine to best suit the fuel you are using getting more out of it . In a duel fuel situation there is a tuning compromise to allow the car to run "good"on both fuels but not optimum on either so you get less than the best using either. In a gas only engine the cam , tune ect can be exactly tuned to suit so more power and better fuel economy.

Bubbles.
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Posted: Sun Jul 27, 2008 7:32 pm 
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so what, tune it properly for lpg and have the petrol there just for emergencies, petrol doesnt need to be perfect just good enough to get u to a bowser so u can put more lpg in

 

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