b200F LU-Jetronic conversion?

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Nimminz
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b200F LU-Jetronic conversion?

Post by Nimminz » 12 May 2013 12:16 pm

Have made very little progress in converting my car to LH2.4 see here: http://www.volvo300mania.com/forum-uk/v ... =5&t=12260

I'm now wondering if the cars I've seen that run on LU? jetronic could be useful. I see they have a lambda sensor, and this is, i'm guessing, one of the main ways LH would be better on fuel. So how hard can it be to either plumb in a Lambda sensor to my existing LE-jet ECU or to swap with a ecu with O2 sensor from one of these cars from another country. The other main advantage was the Air mass meter rather than the air flow one, Maybe the LH type could be transplanted into the LE system?

Of course I'll do some research myself I was just asking to see if anyone has any info or ideas at hand or if i could get anyone else thinking.
'88 360 +T LSD - sold
'87 760 TDI (D24TIC) - sold
'04 V40 D sport (F9Q, decat, Remapped, launch control)
'89 740 SE (b230ft, 12psi, V-cam, headwork, 'remapped', banded steels)
'86 340 DL 1.4

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Chris_C
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Re: b200F LU-Jetronic conversion?

Post by Chris_C » 12 May 2013 02:46 pm

Given the amount of work it would still be, and the availability of the system, I'd stick to LH myself
'89(G) 340 GLE B172k
'03 S60 D5 SE, '91 (J) MX5, 1954 Cyclemaster
Ex:
'89(F) 340 GL F7R (ex B172k) - Fake -> SBKV 300 Runner Up 08, 12; '91(H) 340 GL B14.4E - Kar; '88(F) 360 GLT B200E - Jet -> BKV 300 Runner Up 09; '89(G) 360 GLT B200E - Beast

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Re: b200F LU-Jetronic conversion?

Post by Nimminz » 12 May 2013 11:14 pm

LH is still the master plan, I was just thinking of an intermediate stage that could be done for next to nowt and save a bit of fuel. Would it be much work? New ECU stick in an o2 sensor which you'd have to do for LH anyway, then just connect it to the existing ecu plug via a fuse/relay and plug the relay in. Or it could be a right hasstle on. The ECU's are different (part numbers anyway.
'88 360 +T LSD - sold
'87 760 TDI (D24TIC) - sold
'04 V40 D sport (F9Q, decat, Remapped, launch control)
'89 740 SE (b230ft, 12psi, V-cam, headwork, 'remapped', banded steels)
'86 340 DL 1.4

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trabitom99
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Re: b200F LU-Jetronic conversion?

Post by trabitom99 » 13 May 2013 09:21 am

From memory, you'd need the exhaust manifold with a hole for the lambda sensor, different ECU, different AFM. The Renix is the same as on late B200Es (411a). Other B200F-specific parts (which you probably wouldn't need for a conversion) are a carbon filter, the catalytic converter and the shorter downpipe.

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Tom
343 GL Touring B14.1E CVT (155) 98000kms 1980 (sold)
343 L Junior B14.3E MT4 (155) 229000kms 1981 (scrapped)
343 DLS B19A MT4 (155) 167900kms 1982
360 GL Injection B200F MT5 (231) 348598kms 1988 (scrapped)
360 GLT B200F MT5 (302) 230000kms 1988

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Chris_C
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Re: b200F LU-Jetronic conversion?

Post by Chris_C » 13 May 2013 12:07 pm

Check the pinout on the looms is the same.

They vary enough on the F7x cars, yet people still randomly swap ECUs about at times ;)

If they are, then might well be worth a go if you can find the parts. Is it still horrible RC pairs rather than digital?
'89(G) 340 GLE B172k
'03 S60 D5 SE, '91 (J) MX5, 1954 Cyclemaster
Ex:
'89(F) 340 GL F7R (ex B172k) - Fake -> SBKV 300 Runner Up 08, 12; '91(H) 340 GL B14.4E - Kar; '88(F) 360 GLT B200E - Jet -> BKV 300 Runner Up 09; '89(G) 360 GLT B200E - Beast

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SteveP
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Re: b200F LU-Jetronic conversion?

Post by SteveP » 14 May 2013 05:15 pm

Sounds like a fair bit of effort sourcing parts which might only give negligible gain, seem to remember Aymat saying that the 'F' wasn't really any superior in terms of general running and economy to an 'E'. We all pretty much moaned about the same foibles :lol:
1989 - Volvo 360 GLT
1985 - Volvo 360 GLS
2008 - Volvo S60 SE Lux

Ride_on
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Re: b200F LU-Jetronic conversion?

Post by Ride_on » 14 May 2013 08:49 pm

If you want more MPG get a meter to read it out in real time. The LH is not that good, but it might be slightly better. TBH 940 generally returns less MPG than the 360, until I got a MPG meter, now I can get 37mpg on a run.

Have you considered just the LH fuel management, do you need the EZK? the 360 computer ignition is fine and probably a better match for the head and cam, no technology problems there, but fuel management is still getting better. Fuel can be managed seperately and is mainly independant of engine design. I'm thinking about megasquirt with wideband 02 sensor, but it not really designed for economy.
1980 345 DL_______1987 360 GLE (project car restored to GLT spec and B230FT'd)
1984 360 GLT______1987 360 GLT
1983 360 GLS______1989 360 GLE
1985 340 GL_______1986 340 1.4
1985 360 GLS______1995 940 SE 2.3 Turbo Estate (daily)
1987 340 GL 1.7

Nimminz
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Re: b200F LU-Jetronic conversion?

Post by Nimminz » 16 May 2013 03:53 pm

Yeah I still think LH would be the way to go, even though EZK seems to be needed. Megasquirt etc. is beyond me at the mo I think. I just thought LU has extra things so it must be better lol

Didn't know the AFM was different. So all thats needed if the pinouts are the same is the lambda sensor (bosses can be welded in to existing pipes to save finding a mani), AFM and ECU with a bit of tinkering adding wires to the plug.
'88 360 +T LSD - sold
'87 760 TDI (D24TIC) - sold
'04 V40 D sport (F9Q, decat, Remapped, launch control)
'89 740 SE (b230ft, 12psi, V-cam, headwork, 'remapped', banded steels)
'86 340 DL 1.4

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Duvel78
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Re: b200F LU-Jetronic conversion?

Post by Duvel78 » 16 May 2013 10:01 pm

SteveP wrote:Seem to remember Aymat saying that the 'F' wasn't really any superior in terms of general running and economy to an 'E'. We all pretty much moaned about the same foibles :lol:
Good memories Steve! I had 4 cars with B200F (still have 3), not a significant difference with a B200E. Maybe running *a bit* better during the cold start? Not sure though, this is maybe because the cold start injector isn't leaking... Or the additional air valve still working. The VERY good point is the lower emission, I suspect in the future a similar system in Belgium as for Germany, red stickers for all models but green for the B200F :mrgreen: and still able to go downtown.
Collection: '78 343 Black Beauty, '82 345 GLS, '83 340 DL 2.0, '84 340 DL vario, '88 360 GLT 5d (2x) & 4d (2x), '89 GLT, '91 340 vario
Dad's cars: '87 340 vario, '89 340 vario
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Ride_on
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Re: b200F LU-Jetronic conversion?

Post by Ride_on » 17 May 2013 11:56 pm

Just been to Dublin, and got 41.9mpg average in the 940, although I think my speed calibration is a bit off, far too close to the speedo now. It really likes pulse and glide.. accelerate then freewheel in neutral. 250mpg at 70mph :-)
1980 345 DL_______1987 360 GLE (project car restored to GLT spec and B230FT'd)
1984 360 GLT______1987 360 GLT
1983 360 GLS______1989 360 GLE
1985 340 GL_______1986 340 1.4
1985 360 GLS______1995 940 SE 2.3 Turbo Estate (daily)
1987 340 GL 1.7

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