Toyota Crown 4M Sump hump relocation

[1975ToyotaCrown]

Has anyone ever had a go at swapping the location of the oil pickup hump on the 4M Toyota Crown sump and by using an extended oil pickup tube. We'd love to use a 4M engine in a rod were building and we don't want to modify the subframe so by having the hump moved from the centre to at the rear this would correct the problem.We have a Tig so using a spare sump for the modifications won't be a problem but would the oil pump handle the extra tubing distance.

[wilbo666]

M series sumps come in 3 arrangements.

-Front
-Mid (what you currently have)
-Mid-Rear

Have you looked at using a Mid-Rear sump as found on 7MGE in MA70? This might work out of the box, or at least be a better starting point for mods if required

Sumps across all M series are interchangeable, however you also need to swap oil pumps and may need to drill the engine block to relocate the dipstick etc.

Cheers
Wilbo

[1975ToyotaCrown]

No never knew of the different locations of the hump and does the 7MGE in MA70? have the same mounting hole, I'll see whats on google images.

[wilbo666]

have the same mounting hole

Sorry, I'm not sure what you mean by 'mounting hole'

What do you mean?

Cheers
Wilbo

[1975ToyotaCrown]

Where the sump mounts to the block, I've now looked up 7MGE and there is some difference. We started doing the mods to the 4M sump last night using 2 sumps.

[TheStitt]

I'm running a 4M sump/pick up on my 7M to get it to fit into the crown. so it would work the other way. I'm sure I have a MA70 sump I could take some pics of the and its yours for postage.