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3.5 V8 carb lpg conversion - help



 
 
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  #1 (permalink)  
Old August 7th 03, 12:31 PM posted to uk.rec.cars.fuel.lpg
LOOTA
external usenet poster
 
Posts: 1
Default 3.5 V8 carb lpg conversion - help

I've got an ex met police riot bus LDV LWB twin rear 400, twin carb,
no cat, 22k miles c/w 3.5 V8, a sweet runner returing 17-20mpg, which
compares favourably with plenty of R/rovers. However, she's an obvious
LPG/dualfuel candidate.

I've been told that being carb she has to have an induction type
system which, unless fitted by someone with a lot of experience,
could mean I sacrifice a lot of good things for a lot of hassle.
Any pitfalls, stuff to watch out for - please let me know.
Also, any potential installers out there with plenty of experience on
this engine, get in touch.......ta. LOOTA
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  #2 (permalink)  
Old August 7th 03, 06:13 PM posted to uk.rec.cars.fuel.lpg
Stewart Hargrave
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Posts: 185
Default 3.5 V8 carb lpg conversion - help

From a point at sea, to the circles of your mind, this is LOOTA:

I've got an ex met police riot bus LDV LWB twin rear 400, twin carb,
no cat, 22k miles c/w 3.5 V8, a sweet runner returing 17-20mpg, which
compares favourably with plenty of R/rovers. However, she's an obvious
LPG/dualfuel candidate.

I've been told that being carb she has to have an induction type
system which, unless fitted by someone with a lot of experience,
could mean I sacrifice a lot of good things for a lot of hassle.
Any pitfalls, stuff to watch out for - please let me know.
Also, any potential installers out there with plenty of experience on
this engine, get in touch.......ta. LOOTA



Most LPG conversions are induction types, either open loop (no lambda
probe) or closed loop.

Open loop conversions must be the simplest type to do, particularly in
terms of setting up, though the twin carbs may slightly complicate
things.

Experience helps for sure, and as I've no idea about the
perculiarities of your engine I won't make any specific suggestions,
but any decent converter with more than 3 days experience should be
able to cope. Or do it yourself.


--

Stewart Hargrave

A lot faster than public transport


For email, replace 'SpamOnlyToHere' with my name
  #3 (permalink)  
Old August 7th 03, 08:04 PM posted to uk.rec.cars.fuel.lpg
SimonJ
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Posts: 888
Default 3.5 V8 carb lpg conversion - help


"LOOTA" wrote in message
om...
I've got an ex met police riot bus LDV LWB twin rear 400, twin carb,
no cat, 22k miles c/w 3.5 V8, a sweet runner returing 17-20mpg, which
compares favourably with plenty of R/rovers. However, she's an obvious
LPG/dualfuel candidate.

I've been told that being carb she has to have an induction type
system which, unless fitted by someone with a lot of experience,
could mean I sacrifice a lot of good things for a lot of hassle.
Any pitfalls, stuff to watch out for - please let me know.
Also, any potential installers out there with plenty of experience on
this engine, get in touch.......ta. LOOTA

What they said.......

The Rover v8 is a peice of pee to convert, with carbs you have 2 mixers, and
a 'y' peice in the pipe from the vaporiser, everthing else is the same as
any other engine.
Being a van type thingy makes it even easier, as you have acres of flat
floor to bolt the tanks too, either underneath, or in the back, and you will
also have loads of room under the bonnet for the gubbins.


  #4 (permalink)  
Old August 7th 03, 08:11 PM posted to uk.rec.cars.fuel.lpg
Adam Coombes
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Posts: 40
Default 3.5 V8 carb lpg conversion - help

"LOOTA" wrote in message
om

I've got an ex met police riot bus LDV LWB twin rear 400, twin carb,
no cat, 22k miles c/w 3.5 V8, a sweet runner returing 17-20mpg, which
compares favourably with plenty of R/rovers. However, she's an obvious
LPG/dualfuel candidate.

I've been told that being carb she has to have an induction type
system which, unless fitted by someone with a lot of experience,
could mean I sacrifice a lot of good things for a lot of hassle.
Any pitfalls, stuff to watch out for - please let me know.
Also, any potential installers out there with plenty of experience on
this engine, get in touch.......ta. LOOTA


I've got a V8 carb kit car that I converted myself with a kit from RPi.
Absolute doddle and it runs like a dream. Admittedly the instructions
were a bit ropey but RPi were very helpful, and so were this crowd on
this forum. Someone (Mr Shackles I think) even sent me a tuning guide on
email. In fairness, although RPi's kit was excellent, I'd recommend
browsing through this forum a bit and trying a couple of places. I quite
like the look of Chris Perfects kit with the economax gadgety-thingy.


--
Posted via Mailgate.ORG Server - http://www.Mailgate.ORG
  #5 (permalink)  
Old August 7th 03, 11:01 PM posted to uk.rec.cars.fuel.lpg
Graeme
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Posts: 13
Default 3.5 V8 carb lpg conversion - help


"SimonJ" wrote in message
...

"LOOTA" wrote in message
om...
I've got an ex met police riot bus LDV LWB twin rear 400, twin carb,
no cat, 22k miles c/w 3.5 V8, a sweet runner returing 17-20mpg, which
compares favourably with plenty of R/rovers. However, she's an obvious
LPG/dualfuel candidate.

I've been told that being carb she has to have an induction type
system which, unless fitted by someone with a lot of experience,
could mean I sacrifice a lot of good things for a lot of hassle.
Any pitfalls, stuff to watch out for - please let me know.
Also, any potential installers out there with plenty of experience on
this engine, get in touch.......ta. LOOTA

What they said.......

The Rover v8 is a peice of pee to convert, with carbs you have 2 mixers,

and
a 'y' peice in the pipe from the vaporiser, everthing else is the same as
any other engine.
Being a van type thingy makes it even easier, as you have acres of flat
floor to bolt the tanks too, either underneath, or in the back, and you

will
also have loads of room under the bonnet for the gubbins.


From my memories of driving one of these things in 'active service' as it
were - there ain't that much room under the bonnet as the V8 is shoehorned
in there (ours had the 3 speed auto box as used in the Range Rover in the
early 80s) but I think you may be able to fit a mixer if you shift either
the windscreen washer bottle or the radiator expansion tank?? They had
tendency to 'bunny hop' under serious braking with no load in the back and
were starting to be replaced by Mercedes Sprinters in the mid 1990s - yours
must be one of the last spares out of Lambeth??? Having said that - fun to
drive and we used to get about 9 mpg :-))
Sod all to do with LPG conversions!

Right - http://www.lpg-kits.com/ do kits - search under Range Rover and you
should find a V8 kit suitable for your LDV. As the man says - all that room
to stash a tank - you'll be spoiled for choice, I'd guess you'll be able to
fit something yourself for about £600- £700 depending on what tank you fit -
the carbed V8s are a hell of a lot simpler to fit LPG to than EFi (less
wiring to worry about) and the main problem I think you will have is fitting
the mixer in an easy spot.

Graeme


  #6 (permalink)  
Old August 11th 03, 11:06 AM posted to uk.rec.cars.fuel.lpg
Austin Shackles
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Posts: 533
Default 3.5 V8 carb lpg conversion - help

On or around Thu, 07 Aug 2003 18:13:24 +0100, Stewart
enlightened us thusly:

From a point at sea, to the circles of your mind, this is LOOTA:

I've got an ex met police riot bus LDV LWB twin rear 400, twin carb,
no cat, 22k miles c/w 3.5 V8, a sweet runner returing 17-20mpg, which
compares favourably with plenty of R/rovers. However, she's an obvious
LPG/dualfuel candidate.

I've been told that being carb she has to have an induction type
system which, unless fitted by someone with a lot of experience,
could mean I sacrifice a lot of good things for a lot of hassle.
Any pitfalls, stuff to watch out for - please let me know.
Also, any potential installers out there with plenty of experience on
this engine, get in touch.......ta. LOOTA



Most LPG conversions are induction types, either open loop (no lambda
probe) or closed loop.

Open loop conversions must be the simplest type to do, particularly in
terms of setting up, though the twin carbs may slightly complicate
things.


Y-piece and 2 mixers, is what mine has. not a problem. Only question mark
is about valves on old V8s, and I doubt yours is that old.

closed loop (i.e. electronic mixture control) ought to get you a little bit
better economy.


--
Austin Shackles. www.ddol-las.fsnet.co.uk my opinions are just that
"My centre is giving way, my right is in retreat; situation excellent.
I shall attack. - Marshal Foch (1851 - 1929)
 




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