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Dedicated Gas Engine - difference? 

 

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 Post subject: Dedicated Gas Engine - difference?
Posted: Sat Feb 17, 2007 8:32 pm 
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What is the difference between a dedicated gas engine and a standard one (EL Falcon)?

 

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Posted: Sat Feb 17, 2007 8:45 pm 
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EL never had a dedicated GAS, that came later in the AU series.

 

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Posted: Sat Feb 17, 2007 9:16 pm 
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But to the answer for the question.... didnt the deticated gas have things like different valves and crap like that?

 

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Posted: Sat Feb 17, 2007 9:59 pm 
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afaik a dedicated gas engine has stainless valves hardened valve seats ..
they also have a higher compression and i think a different cam profile..
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 Post subject: ded gas
Posted: Sat Feb 17, 2007 10:00 pm 
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Ded gas motors have different vaules, different intake manifolds, different throttle body and reinforced bottom end (to take the heat of the gas motor)

 

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Posted: Sat Feb 17, 2007 10:10 pm 
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well there is no difference in bottom ends because all the extra heat is top end ..thats the reason for the stainless valves..
the extra heat is created from no valve seat lubrication and higher compression..
but if we are talking au dedicated lpg well the bottom end is strong enough std...
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Posted: Sat Feb 17, 2007 10:28 pm 
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TROYMAN wrote:
well there is no difference in bottom ends because all the extra heat is top end ..thats the reason for the stainless valves..
the extra heat is created from no valve seat lubrication and higher compression..
but if we are talking au dedicated lpg well the bottom end is strong enough std...
There is a reinforcing plate on the bottom end of the au ded gas as i know as my motor has been out for work and the engine builder could not belive it!

 

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Posted: Sat Feb 17, 2007 10:37 pm 
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ok ...
well there you go..
i thought the re-enforcment plate was on all au bottom ends..

but std the au bottom end is much stronger than the early e series anyway..
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Posted: Sat Feb 17, 2007 11:22 pm 
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Posted: Sun Feb 18, 2007 1:25 am 
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I think everyone is speculating without any facts!
I doubt they'd run stainless valves, it's not the valves that f**k up, it's always the seats.
I highly doubt the bottom end is any different, the stock bottom end handles far more than you could give it, LPG adds nothing to stress.
As stated, the EL was never a ded LPG anyway, so i think your question has already been answered.
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Posted: Sun Feb 18, 2007 3:18 pm 
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That bottom end reinforcement is a crank main cap girdle. They came out with the EL Hybrid engine, then the AU got side bolts added to go from the main caps to the alloy sump.
The AU was the first dedicated LPG engine and are recogniseable by the Green rocker cover, which is the same green as the Fairlane Sportsman (I6) had in the NC's.

 

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Posted: Wed Jun 13, 2007 6:45 pm 
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sorry to bring this to the top, but are these motors any good for turbos?
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Posted: Wed Jun 13, 2007 6:52 pm 
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comp too high Robbie. but otherwise would be good if you can lower the compression
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Posted: Wed Jun 13, 2007 7:05 pm 
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what are the options to lower the comp? any off the shelf pistons?
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 Post subject: Re: Dedicated Gas Engine - difference?
Posted: Wed Jun 13, 2007 7:13 pm 
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tinyfox wrote:
What is the difference between a dedicated gas engine and a standard one (EL Falcon)?
compression 10.5\1 same mechicals,harder valve seats,better exhaust valves,cams have no exhaust over lap,require less timing advance,ported heads ----run hard on both fuels

 

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