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Author Topic: LPG conversion started  (Read 10513 times)

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Martin_1962

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Re: LPG conversion started
« Reply #15 on: 25 May 2008, 10:26:04 »

Quote
Not saying the cable ties are a problem. I don't know. I just assumed you had to use the clips provided but it's worth finding out because it's a lot less holes in the car.

Is there any flexibility in where you drill the holes with those tanks? I thought the chassis member would be a bit of a pain. :-/

Does the frame on that tank come as far forwards as the towbar mounting points? Just wondering if I'm going to have issues with that too, as the towbar has a frame on the boot floor.

Kevin

My tank mounts are nowhere near my towbar mounts
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sassanach

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Re: LPG conversion started
« Reply #16 on: 25 May 2008, 12:48:08 »

one day when im really bored  im going to find out if there is any difference between fitting the nozzles where JW has them and where i fit them ie next to the petrol injectors and pointing in the same direction as same. :)
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mkaminski100

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Re: LPG conversion started
« Reply #17 on: 25 May 2008, 14:11:30 »

I see STAG 300 in here. :) Polish producer, really good ones, reliable, and being developed. I think there is new firmware being released just now.
Are injectors Valtec?  These are very good for low temp and I know many people which set their LPG ECU to switch to LPG at 15 degrees - this wouldn't be a good idea with martix injectors.

What nozzle hole size did you go for? http://www.ac.com.pl/autogaz/en/warsztat/Dysze/

You may find some hints about programming and setting up this controller in here http://www.ac.com.pl/autogaz/en/stag300/ and here http://www.pace4diy.com/stag-300.pdf

You can always ask  question here. This is polish STAG producer forum but I think there are many mechanics/garages/ AC STAG technical advisers which speak English. If in doubt, I can post a question. https://www.ac.com.pl/autogaz/forum/viewforum.php?f=7
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Martin_1962

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Re: LPG conversion started
« Reply #18 on: 25 May 2008, 16:17:43 »

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one day when im really bored  im going to find out if there is any difference between fitting the nozzles where JW has them and where i fit them ie next to the petrol injectors and pointing in the same direction as same. :)


I don't think it is too critical with gas
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JamesV6CDX

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Re: LPG conversion started
« Reply #19 on: 25 May 2008, 16:22:01 »

I suspect when the piston goes down, it's all sucked in regardless being a gas, whereas with petrol it's a liquid and needs better direction - but I'm no expert!
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Omegatoy

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Re: LPG conversion started
« Reply #20 on: 25 May 2008, 19:49:34 »

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one day when im really bored  im going to find out if there is any difference between fitting the nozzles where JW has them and where i fit them ie next to the petrol injectors and pointing in the same direction as same. :)


Last system i fitted we did an experiment and mounted the gas injectors as close to the petrol injectors as possible, was a pain to do it that way but the  result was the engine was a lot more responsive to the throttle, more like the engine ran on petrol,power was closer to the petrol and it was easier to set it up!!!!
so do it!!!!! :y

Jay w

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Re: LPG conversion started
« Reply #21 on: 26 May 2008, 00:14:56 »

changed the cable ties for P clips today, total pain in the a$$ but the job has been done n accordance with COP II

The bolts on the tank frame have been changed for longer ones that go through the chassis legs.
Anyway the day progress......

started at 8:45 with the filler, this was going to be bumper mounted like the last one, i had painted it already,

first thing was to mask the area

Having done one before it doesn't get any easier, drilling the bumper wrong will render it useless.

Behind the bumper is a reinforcement this needs to be cut back

once the filler had been fitted

and once the bumper had been refitted

from there it was a case of feeding the filler pipe to the tank, the first thing was to drill and fit the sleeve, this is part of the LPGA COP II, from the tank there is a tube that sits over the filler tube, this is to allow gas escape if required

Once this had been done the outlet tube was also done in the same was, from there it was on to the interior

The kit comes with warning buzzer and switch/fuel gauge, i had decided all of this would be mounted on the centre console

stripped back and ready for wiring and dummy fit with the warning buzzer

and finally installed


the vaporiser wiring has been completed, all that remains is the RPM signal and lambda sensors needs connecting, had the two nozzles not been broken it would have been running tonight with finishing off tonight
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Jay w

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Re: LPG conversion started
« Reply #22 on: 26 May 2008, 00:22:02 »

Quote
I see STAG 300 in here. :) Polish producer, really good ones, reliable, and being developed. I think there is new firmware being released just now.
Are injectors Valtec?  These are very good for low temp and I know many people which set their LPG ECU to switch to LPG at 15 degrees - this wouldn't be a good idea with martix injectors.

What nozzle hole size did you go for? http://www.ac.com.pl/autogaz/en/warsztat/Dysze/

You may find some hints about programming and setting up this controller in here http://www.ac.com.pl/autogaz/en/stag300/ and here http://www.pace4diy.com/stag-300.pdf

You can always ask  question here. This is polish STAG producer forum but I think there are many mechanics/garages/ AC STAG technical advisers which speak English. If in doubt, I can post a question. https://www.ac.com.pl/autogaz/forum/viewforum.php?f=7

yes it is the Stag system with Valtec injectors, i have used one in the past and have good results, was impressed last time.

i will be drilling the nozzles to 3.0 mm, given the calculations i have done this would be ideal, it should be 2.6mm but i dont have that size drill so i am going the next size up

Thanks for the info  :y :y
 
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Jay w

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Re: LPG conversion started
« Reply #23 on: 26 May 2008, 17:37:10 »

well it is 98% done......

If i hadn't had a couple of nozzles break it would be running.

Tank was fitted with the longer bolts today, all the connectors hooked up, electrics now done.

i wont be able to finish it now until next weekend, now, all i will need to do is fit the nozzles to the manifold and put the manifold on, from there it will be a case of fill it up with gas and then do the setup

Total time taken = 32 man hours, now i wasn't going mad, i took my time and plodded through it, in addition i also fitted the MV6 interior within that time.




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Dazzler

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Re: LPG conversion started
« Reply #24 on: 26 May 2008, 17:40:25 »

Coming along nicely Jay :y
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Big jobbies now finished.....Now running on LPG

Entwood

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Re: LPG conversion started
« Reply #25 on: 26 May 2008, 18:11:19 »

Nice work ...  you'll love it when it's finished ... just filled up after the weekend visit to WIM and a few other running around bits ...  

214 miles = 48.52 ltrs LPG = £26.20 ( @ 54p/ltr )

estimated petrol cost would have been £48.54 ( @ £114.9/ltr and 23 mpg)

 :y :y :y :y :y :y :y

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Dazzler

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Re: LPG conversion started
« Reply #26 on: 29 May 2008, 09:24:10 »

Who/what is Jeremy then Jay??

Do you have any details for him/them??
Thanks ;)
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Big jobbies now finished.....Now running on LPG

Elite Pete

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Re: LPG conversion started
« Reply #27 on: 29 May 2008, 09:48:17 »

Dazzler PM sent :y

Is it not worth getting together as suggested and buying in bulk ;)
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mkaminski100

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Re: LPG conversion started
« Reply #28 on: 29 May 2008, 09:51:00 »

Jay – Are pipes coming to and from the tank made from plastic or is it copper pipe covered in plastic?
I want to change my nozzle from Italian to Denmark version (used in UK). Do you know how much are these?

54p/ltr? You are lucky. I pay 59.9 now. Where is it going to end? When I came here 2 years ago, LPG was 32p/l and petrol 65p… And now, LPG cost almost the same as petrol 2 years ago.
I will have to think about LNG conversion now ;)

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ricardo1500

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Re: LPG conversion started
« Reply #29 on: 29 May 2008, 09:55:36 »

I would also appreciate Jeremys contact details....converting my 2.2 is my next job :y
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