5 replies to this topic

[JoeBodge]

alright.
im going to change my oil pump, as i think this is the cause to my lack of oil pressure.

but which type is for my engine?

ive got a 1991 unleaded 998cc A+ engine.

which oil pump is for it?

oil pump slot drive - 3 bolt

oil pump slot drive - 2 bolt

oil pump spider drive

oil pump peg drive

any ideas? minisport say one type, mini spares says another ????? im sooo confussed

thanks

[Sprocket]

Two bolt slot

But then the only way to be sure is by looking at the one fitted.

Edited by Mini Sprocket, 06 December 2006 - 09:57 PM.

[m1n1]

as you are going to strip it, take it apart first then order like for like. Better to do it that way than to take peoples guesses and you can order any other bits you need at the same time.

[Bill USN-1]

I thought only the 2 bolt slot drive was used on the A+ motor.

That's what i had just ordered for my 1275.
I don't remember seeing all the other ones even being listed for an A+ motor in the Mini spares or Mini sports online catalogs.

by the way....Mini Spares has been out of stock for over 2 weeks on them.
I had to order from Minisport.

Just looked at minispares again and found a 3 bolt A+ for the 998
and the 2 Bolt for the 1275.

OIL PUMP 1000CC A PLUS SPADE DRIVE

Price £13.19 exc vat
£15.50 inc vat

For: Classic Mini
Part No. GLP139

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Description

3 Bolt hole fixing pump for A plus 998cc engines. This has a spade type drive spindle to fit the slot in the camshafts .This replaced earlier peg type drive which fitted into camshafts with a pin(known as pin drive).

OIL PUMP 1300 A PLUS SLOT DRIVE

Price £13.19 exc vat
£15.50 inc vat

For: Classic Mini
Part No. GLP138

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Description

The "slot" drive oil pump has been the factory standard for many years. The evolution of the pump in production was started with the "pin" drive that is most common in early small bore motors. These pumps have a fork on the drive side to engage the "pin" in the end of the camshaft. Many 1275cc engines were then given "star" drive pumps. The pump has a splined shaft that engages a "star" drive that fits into the camshaft. The latest slot drive pump has a screwdriver end that engages a "slot" on the end of the camshaft. Almost every new or reground camshaft now available from the UK is only available in "slot" drive configuration! Oil pumps in the Mini/Sprite/Morris motors should be the most replaced item inside the motor. NEVER open the motor without replacing the pump. In these motors the pump is asked to suck the oil directly from the sump and send it to the oil filter. Thus the pump only sees UNFILTERED oil and does wear out quickly relative to the rest of the motor. As a rule of thumb you should have 10lbs of oil pressure for every 1,000 rpms!

Edited by Bill USN-1, 07 December 2006 - 09:51 AM.

[JoeBodge]

thanks Bill USN-1, prob get mine from miniport, as i need to get a clutch and oil seal aswell. thanks for your help

[Bill USN-1]

thanks Bill USN-1, prob get mine from miniport, as i need to get a clutch and oil seal aswell. thanks for your help

Just edited above so look close!!