carb to injection

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robinm
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Re: carb to injection

Post by robinm » 06 Dec 2014 09:01 pm

Still in the planning stage of this conversion, getting everything ready so the car is off the road for the least amount of time. Am looking at the possibility though of not having to change the fuel tank over. What I am looking at is putting a tee in the balance tube that runs across the bottom of the tank. The tee would be a 1/2" tee, with 2x 5/16 inlets and a 1/2" outlet to the EFI pump. I could even tee in the return line from the engine bay, just to help it along.
'

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Joris
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Re: carb to injection

Post by Joris » 07 Dec 2014 03:44 pm

robinm wrote:Still in the planning stage of this conversion, getting everything ready so the car is off the road for the least amount of time. Am looking at the possibility though of not having to change the fuel tank over. What I am looking at is putting a tee in the balance tube that runs across the bottom of the tank. The tee would be a 1/2" tee, with 2x 5/16 inlets and a 1/2" outlet to the EFI pump. I could even tee in the return line from the engine bay, just to help it along.
'
I have tried that, didn't work. Swapping the tank sounds like a lot of work, but it is the easiest and fastest way to make it work.

robinm
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Re: carb to injection

Post by robinm » 08 Dec 2014 06:49 am

ok, looks like I will have to bite the bullet and fit the correct tank.

Ride_on
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Location: Belfast, N. Ireland

Re: carb to injection

Post by Ride_on » 08 Dec 2014 10:29 pm

Interesting that the lobe joiner pipe didn't work. If you used a 3 way dia 6mm T it will be a huge restriction but if you can add the CSA with a 6-6-10 dia T or Y it will help, but the CSA is still not the same as the 10mm dia injection outlet.

2 times 6mm dia = 56.52mm2
1 times 10mm dia = 78.5mm2

Looking at the 360 carb tank it is something like 8mm od compared with the injection 10mm id.

Could it just be the outlet diameter,... And the difficulty priming, long pipe, gravity assistance etc.
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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Joris
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Re: carb to injection

Post by Joris » 09 Dec 2014 06:54 pm

I had used a T-piece with 10mm to the pump, but the pump sucked the filter empty faster than the tank could fill it.

robinm
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Re: carb to injection

Post by robinm » 20 Dec 2014 08:33 pm

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I think I have found a way, I am going to drill a 20mm hole in the tank, directly underneath the fuel sender and use a brass bulkhead fitting with a 1/2" hose from that to the fuel pump. I will use the original feed pipe that goes to the existing mechanical fuel pump as the return line back to the tank

Ride_on
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Location: Belfast, N. Ireland

Re: carb to injection

Post by Ride_on » 21 Dec 2014 11:22 am

I would say that will sort the flow issue, but you don't want to be too close to the bottom of the tank and you should have a gauze filter in the tank.
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

robinm
Posts: 23
Joined: 31 Aug 2014 06:09 am

Re: carb to injection

Post by robinm » 04 Jan 2015 12:15 am

OK I have started stripping the donor car and have a query. I am planning on using my existing head,just fitting the efi manifold. What I have seen is the EFI head has 2 temp sensors in it toward the rear. My head has a blanked off hole below no 3 that one of the sensors will fit into, the other sensor, close to no4, the carb head looks like that hole is there under the inlet manifold, what I need to know is if that hole has a thread in it to accept the sensor??
The reason I want to use my existing head is that the GL has done 1/2 the milage of the GLT donor.

Ride_on
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Location: Belfast, N. Ireland

Re: carb to injection

Post by Ride_on » 04 Jan 2015 04:19 am

I haven't actually checked, but I doubt the hole is threaded. I also think you may need to blank off the coolant hole to the carb manifold, as the carb manifold is heated.

I would not worry too much about milage on a B200E head.
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

robinm
Posts: 23
Joined: 31 Aug 2014 06:09 am

Re: carb to injection

Post by robinm » 04 Apr 2015 11:37 pm

ok, i have finally started the conversion, well almost finished it now. But I have a issue, when I stripped the doner car I was carefull to label all the electrical connecters, all good untill putting the loom into my car this morning, I have one wire that either I missed labeling or the label came off.
It is a single wire, yellow with 2 red tracers, ( or red with 2 yellow tracers, it is hard to tell.) It comes out of the EFI loom roughly above the starter motor/bellhousing area
Can someone with an EFI car have a look and tell me what it connects to?, there appears to be nothing handy for it to plug into.
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volvodspec
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Re: carb to injection

Post by volvodspec » 05 Apr 2015 09:27 am

it's not connected to anything, i believe it's for a diagnostics tool but i'll have to look that up later

robinm
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Re: carb to injection

Post by robinm » 05 Apr 2015 10:25 am

Thanks, that is a load off my mind, now all I have to do is pull the head off again and replace the seal on top of the water pump that I forgot to renew when I had the head off yesterday, What a dummy, I just forgot all about it and coolant just hosed out as soon as I refilled the radiator. oh well, live and learn I suppose.

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volvodspec
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Re: carb to injection

Post by volvodspec » 05 Apr 2015 10:29 am

you don't have to remove the cilinderhead for that, just unbolt the waterpump from the engine

waterpump seal kits are easaly available and include the rubber O-ring for the heater pipe, the gasket for the pump housing to the engine and the larger O-ring for the cilinder head seal

robinm
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Joined: 31 Aug 2014 06:09 am

Re: carb to injection

Post by robinm » 05 Apr 2015 07:29 pm

That is what I will do, have just ordered a seal kit via ebay and will whip the pump off when the kit gets here in a week or so.

robinm
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Joined: 31 Aug 2014 06:09 am

Re: carb to injection

Post by robinm » 05 Apr 2015 08:53 pm

I have a couple more questions, ok I swapped the entire engine bay loom from the GLT into the GL, i have not finished the fuel tank end yet so at this stage have not tried to start the car, not that i would until I have sorted the coolant leak anyway.But the query's I have relate to the aux fuse box and the small relay on the LH inner guard. I followed the petrol pump wiring( on the GLT)back from the pump to the front of the car where it seems to connect to the lower of the two fuses in the aux fuse box, is this correct? If so I will just run a new wire from there direct to the fuel pump?
Also the colors of the fuel pump wires do not seem to match the color code in the wiring diagram, the two wires that went to the fuel pump were black which came from that aux fuse box and brown which went to earth, whereas the wiring diagrams show red and brown.
And what does the upper fuse in the aux fuse box cover?
And what does the small relay mounted just in front of the aux fuse box do, I can not seem to find any reference to it in the wiring diagrams I am looking at?

OK, I have found the answers to my queries, the upper fuse and the relay is for foglamps, which I do not have, so I will ignore them.
And I discover the other fuse, the fuel pump one is a source of breakdowns and frustration so have fitted another fuse box further back up the guard, between the Ignition unit and the wiper motor, screwed into unused plastic nuts in the guard and put the petrol pump fuse in there.

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