Omega Owners Forum

Chat Area => General Car Chat => Topic started by: colv6 on 18 October 2009, 23:36:00

Title: thinking of going lpg
Post by: colv6 on 18 October 2009, 23:36:00
thinking of fitting lpg to my 1991 2.5 v6 facelift estate, robseymv6 has one for sale mxer type.


i take it there is more than one type ?
will the above fit my estate ?
is it a pro only fit or is it possible diy ?
 
Title: Re: thinking of going lpg
Post by: feeutfo on 19 October 2009, 00:25:04
Quote
thinking of fitting lpg to my 1991 2.5 v6 facelift estate, robseymv6 has one for sale mxer type.


i take it there is more than one type ?
will the above fit my estate ?
is it a pro only fit or is it possible diy ?
 
Well, don't want to tread on Robs sale but in my enquiries on here into fitting mine, all said needs to be a multi point system(1 injector per cylinder) on the v6. I imagine it may work on a 4 pot but from what i was told, may be agro on the 2.5.

Others have more experience with these things though, worth waiting for their opinion imho. :-)

Title: Re: thinking of going lpg
Post by: JamesV6CDX on 19 October 2009, 00:27:25
Seen the single point work OK on the V6 - but, all things considered, SGI is better  :y
Title: Re: thinking of going lpg
Post by: Marks DTM Calib on 19 October 2009, 10:51:57
The mixer setups will render the multirams as pretty useless.

Sequential is the recommended approach
Title: Re: thinking of going lpg
Post by: Entwood on 19 October 2009, 12:33:49
From my research prior to my conversion I discovered that a major problem with mixer systems on an injected engine is the probability of backfires.

On the petrol side the injectors are turned off on overrun (hence the 999 mpg on the MID/CID), this does not happen with the mixer gas, so the inlet manifold will be full of a gas/air mix which is not required. Some of this will be passed through the system into the exhaust, and pssibly back into the inlet via the SAI. Should this ignite due to a hot exhaust/cat then there is a risk of the inlet plenum "blowing up" also through the SAI, with subsequent damage. The fitting of a "pressure relief" valve to allow this "explosion" somewhere to go may prevent the damage.

Now i might have got some of the "understanding" of the problem a bit wrong .. but the gist is, I believe, correct ... mixer on injected = high risk of backfire and damage.

Having said that .. sequential system is brilliant and saving me shedloads of cash .. :)
Title: Re: thinking of going lpg
Post by: cem_devecioglu on 19 October 2009, 14:47:54
before installing LPG , engine must be working faultless or you will end up in searching complicated problems...
Title: Re: thinking of going lpg
Post by: Lazydocker on 21 October 2009, 08:40:17
The mixer systems will work but... You basically are filling the plenum and inlet system with a highly flammable mixture of LPG/air which will eventually ignite in a backfire causing serious damage to the inlet system. It's a timebomb!

IMHO, for the costs involved in getting a front end sequential kit from the supplier several of us have used, it's not worth the hassle :y :y