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Author Topic: 3.2 MV6 - My DIY LPG Conversion  (Read 5084 times)

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Kevin Wood

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Re: 3.2 MV6 - My DIY LPG Conversion
« Reply #15 on: 20 December 2011, 09:43:17 »

Agree with Chris, but it all ended ok :y

Looks nice and tidy :y The only thing we have started doing differently (other than the butchery surgery on the interrupt wiring to use the big Vx injector plug) is take the vac reference from a tee on the servo line :y

This is what Gaffers did initially and the MAP was all over the place every time the brake pedal was pressed. Also, the MAP hit 100kPa at about half throttle. I did wonder if the brake servo was leaking (it held vacuum with the engine stopped for a good few pumps of the pedal, though). Be interested to know if there's any effect from the servo on other cars plumbed this way.

Still, looks a nice job, James. Second nature by now, though. :y
worth a look :y
although both mine have been done that way, no issues attributed to it, iirc...?
Mine done that way and so's TBE, both with no ill effects :y

I wouldn't expect there to be, TBH, which is why I was a bit baffled by Gaffers' issue. We drew a bit of a blank, so put a nozzle in the plenum and, AFAIK, it has been fine since. I think there must have been a leak into the servo but, as I say, you could stop the engine, and it held enough vacuum for a half dozen pumps of the pedal. :-\
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feeutfo

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Re: 3.2 MV6 - My DIY LPG Conversion
« Reply #16 on: 20 December 2011, 09:45:20 »

Agree with Chris, but it all ended ok :y

Looks nice and tidy :y The only thing we have started doing differently (other than the butchery surgery on the interrupt wiring to use the big Vx injector plug) is take the vac reference from a tee on the servo line :y

This is what Gaffers did initially and the MAP was all over the place every time the brake pedal was pressed. Also, the MAP hit 100kPa at about half throttle. I did wonder if the brake servo was leaking (it held vacuum with the engine stopped for a good few pumps of the pedal, though). Be interested to know if there's any effect from the servo on other cars plumbed this way.

Still, looks a nice job, James. Second nature by now, though. :y
worth a look :y
although both mine have been done that way, no issues attributed to it, iirc...?
Mine done that way and so's TBE, both with no ill effects :y

I wouldn't expect there to be, TBH, which is why I was a bit baffled by Gaffers' issue. We drew a bit of a blank, so put a nozzle in the plenum and, AFAIK, it has been fine since. I think there must have been a leak into the servo but, as I say, you could stop the engine, and it held enough vacuum for a half dozen pumps of the pedal. :-\
not the old "servo pipe rubbed through on the ac pipe" favorite then...?
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Kevin Wood

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Re: 3.2 MV6 - My DIY LPG Conversion
« Reply #17 on: 20 December 2011, 09:47:39 »

not the old "servo pipe rubbed through on the ac pipe" favorite then...?

No leaks that we could find, and, as I say, air drawn from the servo was certainly making a  big impact. On hindsight I do wonder if the pipe was partially blocked.
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TheBoy

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Re: 3.2 MV6 - My DIY LPG Conversion
« Reply #18 on: 20 December 2011, 10:35:37 »

Happy to take any required pics of TBE, which obviously has been certified, first attempt.

How did you get on with certification JamesV6?
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Re: 3.2 MV6 - My DIY LPG Conversion
« Reply #19 on: 20 December 2011, 11:34:06 »

Happy to take any required pics of TBE, which obviously has been certified, first attempt.
Yep, or my estate. When it was inspected we had a bit of a discussion about a couple of things but it passed and they commented that it was far neater than any of their conversions ::) ;D :y
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tigers_gonads

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Re: 3.2 MV6 - My DIY LPG Conversion
« Reply #20 on: 20 December 2011, 13:31:09 »

Have any of you lads got any pictures of the mounting and plumbing of the KME Gold reducer on the 3ltr V6 ?

I had a right ball ache getting mine to fit down there and tbh i've still got some tidying up to do on that side  :-[
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Re: 3.2 MV6 - My DIY LPG Conversion
« Reply #21 on: 20 December 2011, 13:42:13 »

not the old "servo pipe rubbed through on the ac pipe" favorite then...?

No leaks that we could find, and, as I say, air drawn from the servo was certainly making a  big impact. On hindsight I do wonder if the pipe was partially blocked.

MAP is still off a bit although it is steady now when you press the pedal.  I wonder if that is causing the misfire issue I have....

Not had the time to look at it properly yet as I have other priorities right now but the blocked line is a real possibility as the breather box pipes on the trumpets were blocked when I first got the car.  Yet I remember taking the line off and feeling the neg pressure in the t-piece and then unplugging the line next to the MAP sensor there was still neg pressure.  I suppose a partial blockage could be possible but then the MAP would just be slower to react surely rather than reading 0.08-0.1 too high.

By the way, who the f£$% is Gaffers?  ::)
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Re: 3.2 MV6 - My DIY LPG Conversion
« Reply #22 on: 20 December 2011, 15:24:36 »

Agree with Chris, but it all ended ok :y

Looks nice and tidy :y The only thing we have started doing differently (other than the butchery surgery on the interrupt wiring to use the big Vx injector plug) is take the vac reference from a tee on the servo line :y

This is what Gaffers did initially and the MAP was all over the place every time the brake pedal was pressed. Also, the MAP hit 100kPa at about half throttle. I did wonder if the brake servo was leaking (it held vacuum with the engine stopped for a good few pumps of the pedal, though). Be interested to know if there's any effect from the servo on other cars plumbed this way.

Still, looks a nice job, James. Second nature by now, though. :y


Mine comes off the servo with no ill effect

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feeutfo

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Re: 3.2 MV6 - My DIY LPG Conversion
« Reply #23 on: 20 December 2011, 18:28:58 »

Have any of you lads got any pictures of the mounting and plumbing of the KME Gold reducer on the 3ltr V6 ?

I had a right ball ache getting mine to fit down there and tbh i've still got some tidying up to do on that side  :-[
agree it is tight, and fiddly, with ltd access. Plues leaving room to get access to the allen key adjuster doesnt help.
Although dbw engine bay helps.
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Re: 3.2 MV6 - My DIY LPG Conversion
« Reply #24 on: 20 December 2011, 18:57:26 »

Have any of you lads got any pictures of the mounting and plumbing of the KME Gold reducer on the 3ltr V6 ?

I had a right ball ache getting mine to fit down there and tbh i've still got some tidying up to do on that side  :-[
agree it is tight, and fiddly, with ltd access. Plues leaving room to get access to the allen key adjuster doesnt help.
Although dbw engine bay helps.


Tell me about it   :)

Pain in the arse  ;D

Has anybody totally removed the EGR side of the engine on a 2.5 / 3ltr engine and shorted out the plug on here ?  :-\
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Re: 3.2 MV6 - My DIY LPG Conversion
« Reply #25 on: 20 December 2011, 19:18:24 »

Has anybody totally removed the EGR side of the engine on a 2.5 / 3ltr engine and shorted out the plug on here ?  :-\
TheDaddy...

I would leave the egr as-is...
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05omegav6

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Re: 3.2 MV6 - My DIY LPG Conversion
« Reply #26 on: 20 December 2011, 20:49:22 »

Quote
take the vac reference from a tee on the servo line

Is this taken from the Vac line between the servo and the Non return valve, or between the valve and the plenum :-\
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