SU Overflow pipe

[44DHR]

I called round to help a friend working on a very original 30,000 mile Series 1 4.2 litre 2+2 with a starting issue. It turned out to be a sticking choke mechanism on the rearmost SU nearest the bulkhead, which was duly removed and fixed.
However, when I went around today to help refit the SU, we have an issue with refitting the overflow pipe. The other two SUs have their float chambers facing forward with their fuel inlets at 90 degrees to the engine, yet the rearmost SU has the float chamber facing to the rear and the fuel inlet in line with the engine.
This gives an issue with refitting the rearmost SU overflow pipe as it appears to cross over the fuel inlet moulding, so the banjo fitting fouls the moulding as in the following photo. We can see a clip down by the oil filter which is where all the three ends of the overflow pipes should fit into, so logically to reach it, the overflow has to cross the moulding.



Please can someone confirm the banjo crosses the moulding and is very tight to the fuel inlet moulding or should there be some form of spacer or thicker sealing washer under the banjo to lift it clear ?

Also on the main petrol feed pipe, now we go to refit it, one banjo bolt has two alloy looking washers, but the other two only had one alloy looking washer. Have some washers gone missing and can we use fibre washers each side of the bolt as in the SU HD8 Gasket Service pack, there appears to be two red fibre washers which would fit ?

Regards,
Dave

[mgcjag]

Hi Dave...yes should fit as per your photo. Looks like if you turn your lid anti clockwise to fit the fuel inlet then the overflow will fit ...however you have a double bend on the overflow pipe to get you over the frame....i thought it was just one 90deg bend and straight down.......no special spacers......dont forget on the banjo for the fuel bowl one of the washers is serated aluminium as a breather...cant remember if its the top or bottom....service manual should show it.....Steve

[44DHR]

Thanks Steve.
The lid is just loosely sat on for the photo and will be turned anti-clockwise to line up the mounting screws.
It was the fact that the large diameter of the “banjo” before it tapers down into the breather pipe will be the issue clearing the fuel inlet casting. It would be interesting if others can confirm about if it should be a single 90 degree bend rather than the present double bend.
At least I know the direction is correct - many thanks.
Good point about the breather washers. The lower one is like an identification tag, so when I go round next week, I will check that the top one is correct.
Regards,
Dave

[mgcjag]

Hi Dave....there should be 2 washers on the lid and an id tag......Steve...

[christopher storey]

The slotted washer goes next to the lid, then the breather pipe above it, and the other washer and ID tag at the top

[caveman]

[mxke]

Would anyone have a picture of the overflow pipes off the car?
I need to recreate mine as the PO cut them all short (all about 4 inches long currently)
Thank you,
Mike

[Allrand]

Thanks Steve.
The lid is just loosely sat on for the photo and will be turned anti-clockwise to line up the mounting screws.
It was the fact that the large diameter of the “banjo” before it tapers down into the breather pipe will be the issue clearing the fuel inlet casting. It would be interesting if others can confirm about if it should be a single 90 degree bend rather than the present double bend.
At least I know the direction is correct - many thanks.
Good point about the breather washers. The lower one is like an identification tag, so when I go round next week, I will check that the top one is correct.
Regards,
Dave

Your overflow pipe seems to be kinked slightly at the banjo fitting, if it were straightened it would clear the inlet moulding bettet.
The PO of my car also cut the overflow pipes short. Doesn't seem to be a problem, just makes fitting them easier. If there is any overflow it just drips straight down to the floor, which happens with the long pipes anyway.

[Series1 Stu]

If there is any overflow it just drips straight down to the floor, which happens with the long pipes anyway.

Only if the car is stationary. If its moving at the time, then it's anybody's guess where the spilled fuel ends up. I'm prepared to bet that they are those lengths for a very good reason.

I have seen what can happen when spilled fuel finds its way into a starter motor.

Regards

[Allrand]

Good point, but if they end just next to the oil filter fuel can still get blown all over the place. But I guess Jaguar designed it that way so probably thought it safer that way. It would be interesting to know how many fires have been caused by flooding carbs.