Fuel Tank Refinements

A spare half hour spent in the garage resulted in fitting the fuel sender with a new seal from my local Ford dealer who said (a while ago) they didn’t have any old stock left… The Ford Corsair Facebook came up with this gem though and somebody quoted the part number (6085380) and sure enough for £1.81 I had a brand new seal. The old one came off without too much drama, then a quick wire brush to clean off the residue of rust and any other dirt.

New seal on the left and old and crusty seal on the right
Old sender unit seal being prised out
Fuel sender fitted to the fuel tank nice and snug with the new seal

Sorted, I just need to flush the fuel pipes and fuel pump with clean petrol and then another start up looms…

Dom

Waxoyl – The Amateur Way

The Corsair up on ramps – March 2017

Another fine day towards the end of March enabled me to get the Corsair up on the ramps. It was after speaking to John (AJ Restorations), last year in August, that he strongly advised that I get the underside of the car Waxoyled or protected in some way. So a birthday present was a Waxoyl pump system. There were mixed reviews on line, but this one seemed to be a new and improved version. I had previously used Waxoyl, but applying it by brush was a messy process as it dripped a lot.

The instructions for the pump set up were a bit basic and not very in depth, so it was trial and error, again. There was the basic fitted nozzle to treat easily accessible, flat panels; a black pipe as per the photo with a squirty nozzle (there was a wide spray nozzle also supplied) for awkward areas and working upwards and then there was a thin transparent pipe for inserting into chassis rails etc. What a messy system I had got my self into.

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Fuel Tank Refurb Part 2

Fuel Tank re-painted

Some nice weather in mid March and there was a great opportunity to finish off the fuel tank with some more black Hammerite I had left over from previous jobs. All was going great, paint looking nice and drying well in the sunshine, and then I looked inside. The sealant I put in the previous week had begun to peel! Damn! ****! I was well aware that the inside of the tank needed to be ‘bone’ dry, but did I get it dry enough last time?… Obviously not!

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Fuel Tank Refurb Part 1

Back on it again after a few months off…

The fuel tank was removed a couple of weeks ago when there was a nice spell in the weather and I hadn’t fallen asleep by the Sunday afternoon! It didn’t take long and thankfully there wasn’t much fuel in the tank, about a litre of a translucent brown fluid. Straight after Christmas I bought a fuel tank repair kit, POR-15 on Amazon for about £45, in readiness and to help spur me on.

POR-15 kit, the small tin of sealer was more for a motorcycle size tank, I was being a bit tight with my money…

Reading about the procedure, it was evident that up to 3+ hours was needed for the process of which I used two hours on a nice Thursday afternoon on the 2 March to clean the tank. First it was the ‘Marine Clean’ (1:1 mix with very warm water), however my bubble wrap cover over the fuel sender unit hole was not very good and leaked a fair bit when I was sloshing the fluid mix about. The bubble wrap in the filler neck was fine and when I came to do the ‘Metal Ready’ part I just used duct tape over the sender aperture which was fine and hardly leaked.

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Fuel or electrical problems…

Last week – too much of a crap mood to write anything then – I looked at taking the Corsair out for a bit of test drive around the nearby garages/flats access road. While it took a bit to get started, the engine ran lumpy with popping and back firing through the carb, just as before. All I could think of was the fuel was dirty and contaminating the jets and other fine points of the carburettor. A message on Facebook about this and it was suggested that the electrics were at fault, but the other week the engine was running sweet, however the fuel did look dirty in the carb float chamber. So I have decided to remove the fuel tank (at some point), clean it best as I can and flush through the fuel lines, filter and pump, clean the carburettor (again) and hope this will solve the carburettor set up problems. I have also bought a NOS Motorcraft distributor, but upon closer inspection suspect it is for a Pinto (Ford) rather than for Essex V4.

I will get on to it when I feel like it and I need to buy a cleaning agent for the fuel tank.

Dom

Re-assembly and start up

The carburettor was fitted a couple of weeks ago (18 Sept 16) along with the radiator and cooling system for a test start up. However, it didn’t work out as well as I hoped. While the car started easily the carburettor was not set up right or properly adjusted or whatever… With the choke out the engine was revving high – guessing 2-3000 rpm and with the choke pushed in it rose higher still! Fiddling about with the volume control screw didn’t seem to have an effect, even swapping it out for another only made things worse. I had to abort the running engine when the revs were rising – and so it was back to rethinking what was wrong.

A couple more weeks pondering options, re-reading paperwork and on-line solutions gave a hint that the carb needed rebuilding or stripping down again.

The Zenith 361v carburettor is apart again
The Zenith 361v carburettor is apart again – look at that fuel, I think it will cause a problem…

Back in the garage, armed with a better mood I tried again with the carburettor rebuild, took it apart and sought to clean the mating surfaces within it more efficiently. Using 1200 grit wet/dry paper lubricated with WD40 I rubbed down the surfaces again though a bit more thoroughly and getting a cleaner/shine to them. While it was all apart I sprayed more carb cleaner in various orifices when removing a variety of screws.

Zenith 361v carburettor cleaned for a second time.
Zenith 361v carburettor cleaned for a second time.

Upon rebuilding I paid more attention to the set up of the throttle stop and volume mixture screws and then put it back on the engine. I tentatively restarted the car without any choke to begin with and it fired up ok though was a bit lumpy. I gave it a small amount of choke and it ran fairly smoothly but not at high revs this time. Blipping the accelerator was smooth and there weren’t any pops and back fires through the carburettor. Idling needs to be adjusted properly with a tweak to volume control and throttle stop required, but that can come on a later date.

So far so good, I had a minor leak on the brake system while the car was away being restored, so that will need re-bleeding all round.

The Front Chassis Restoration

From early August John from AJ Restorations started to work on the front chassis sections that needed to be repaired. Thankfully he had good weather in nearly all the 28 days that he had the car and spent approximately 35 hours on the restoration (between other better paying work). First he started on the off side section and cut out from the front right back to the cross member supporting the engine. He only went half way up the chassis leg, retaining the bumper mounts, as the top part was in good condition. He also ground off the old ‘repair’ plates that had been wrapped around and welded over the old corrosion.

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Carburettor rebuild (Zenith 361V)

While the Corsair was away at AJ Restorations I had a go at rebuilding the Zenith 361V carburettor. I had bought another one to practice on first, but it was mainly designed for a Land Rover application as the fuel inlet was different and I wasn’t sure on some of the other internal subtle differences, so it was not suitable for the Corsair application. The only part I salvaged was the rod connecting the floats as the original was bent. I refrained from swapping the pump too as the Land Rover one had a much softer spring and I wondered if that would have an adverse effect on final operation.

The images are in a sequential order and partially explain the process.

Plenty of time was spent taking it apart and with the old gasket scrapped off and the whole carb dismantled, the mating faces of the body were rubbed on 1200 grit wet and dry paper with WD40 as a lubricant to flatten the surfaces. Plenty of carb cleaner was sprayed in all the holes and orifices then blown through with an air duster but it wasn’t very powerful.

I used these useful links to help in my research for what to do:

At this point the carburettor is untested but no doubt a report will be done once it has been fitted. I hope that was of interest and thanks for viewing.