BSA Sump Pick-Up Pipe Mod

Рет қаралды 2,534

3 жыл бұрын

Having stupidly swamped the engine with oil by not realising that a 'quality' aftermarket sump plate restricted scavenging, I belatedly shorten the pick-up tube..
04:00 Cutting the pick-up pipe
07:50 Sump plate back on
[L]

Пікірлер: 16

@AaaaandAction Жыл бұрын

I think I would have been thinking along the lines of milling out the inside base of the sump plate rather than cutting a part of the original engine. Easier to drill out with a pillar drill, don’t spoil original parts, no swarf flying around the oil pickup area & finally if it doesn’t work out right you can always weld up the recess you drilled in the sump plate again.

@Greeves Жыл бұрын

Thanks for your comment. I did agonise over this but feedback from the B50 Forum seemed to suggest that shortening the tube was the obvious thing to do & common practice. There's not much 'meat' on the SRM plate. Not enough to safely create a gap equal to the area of the pick-up tube. I did consider using extra gaskets, or better still, a spacer to drop the plate further from the engine. I finally cut the tube to be absolutely certain that there'd be no restriction to oil flow. Faced with the issue again I may well tackle the problem differently; it's not good to be 'defacing' original, 50 yr old, BSA parts even if it was commonly done 'in period'.

@pebrede 8 ай бұрын

A foam earplug in the pickup tube to seal it and it will also catch the swarf as it is hot and will melt into the plug. Old BA hard plugs are better than the soft foam ones if you have a choice. You really should have machined a sump at least 3 times the pickup diameter into the sump plate with 2/3 of the id clearance to the bottom to allow good flow and sufficient trap area for sludge. The sump should be removed every oil change to clean the screen as there is no real filter in the system unless you add a Trident/Rockket3 or Norton filter to the pump supply line. Take care n have fun.

@Greeves 8 ай бұрын

Thanks for this; great advice. Fortunately I have fitted a 'spin-on- oil filter, so sludge shouldn't be too much of a problem. (details here kzfaq.info/get/bejne/kNSIe9Kiq5iam6c.htmlsi=VihqpfLxhujgtTAB ) Scavenging is now alright as well.

@stuartburton1167 Жыл бұрын

When I fitted my sump plate I used some kitchen roll smeared with grease to plug the pickup pipe. I left about an inch of roll sticking out and cut round it. Then pulled the plug out bringing the filings out with it. Then I sprayed brake cleaner into the pickup just in case any grease was blocking it

@Greeves Жыл бұрын

Thanks for sharing. I should have done that. Next time . . . . :)

@celtic4war 2 жыл бұрын

What kind of seal was that?

@Greeves 2 жыл бұрын

Hi. The gasket goo I used was Stag ‘WellSeal’. This traditional product disappeared from the market for many years but is available again now.

@Robertw51 2 жыл бұрын

Nice plate this SRM. Pity it doesn’t work.

@Greeves 2 жыл бұрын

Yeah, I know what you mean. In fairness, the plate does fit many BSA models and no doubt works fine on most (I had one on my A65). In all cases though, especially the B50, it’s evidently worth double checking the clearances before fitting 👍

@alleyoop1234 Жыл бұрын

Junk part from SRM. I would have just put the original plate back on instead of reinventing the wheel

@Greeves Жыл бұрын

The reason I stuck with the alternative plate was the drain plug. It’s a pain taking the original plate off & back on if the engine does wet sump 🙁

@alleyoop1234 Жыл бұрын

@@Greeves Yes I understand that. I used the original, drilled a 1/2" hole and welded a 1/2UNF nut to the bottom, and a Chevy magnetic drain plug on my 67 Lightning

@Greeves Жыл бұрын

Cool 😎

@julesw4037 9 ай бұрын

B50 has a longer scavenge pipe and does have a deeper steel sump as standard. The other singles that have the square sump plate, all have enough clearance for the SRM sump plate to work ok.

@Greeves 9 ай бұрын

Thanks for the comment 👍