• Hi Guest!
    You can help ensure that British Car Forum (BCF) continues to provide a great place to engage in the British car hobby! If you find BCF a beneficial community, please consider supporting our efforts with a subscription.
    There are some perks with a member upgrade!
    **Upgrade Now**
    (PS: Subscribers don't see this gawd-aweful banner
Tips
Tips

Water pump info

Share this page

DNK

DNK

Great Pumpkin
Country flag
Offline
Triumph guy asking an MG question. I'll be struck down for sure.
My bro has a 72 B and the pump for the 71 and 2 are different. He says it has to do with the air pump mounting. I thought it was different than that.
What is the difference?
 
The air pump mount is on the t'stat housing, not the water pump.

Go here and read the PDF for part #9.
 
Fine and Dandy Doc. what if you have a 72 and don't have the smog pump
 
The water pump will work. Smog pump is excess to requirement.
 
I think 71 was the last year for the long snout water pump. The 72 was shorter. Different pulley also. Watch for fan to radiator clearance when mixing and matching bits from different car years. Bob
 
bob67bgt said:
I think 71 was the last year for the long snout water pump. The 72 was shorter. Different pulley also. Watch for fan to radiator clearance when mixing and matching bits from different car years. Bob
Click to expand...

Bob nailed it, it has to do with snout length and pulley type. All that stuff is interchanglable if done in whole with the pump and pulley together.
 
So if he has a short nose 72 pump ,he needs a short nose pump as a replacement regardless of the smog junk.
 
Yup. The LONG nose can be replaced with a short one but not the other way 'round. In a pinch.
 
Yep, Don it has to do more wih the pulley and pump combination, they all come out into the same plane as for water pump, balancer, and alternator/genorator, the short nose pump have pulleys that have the belt groove pretty much equal with the front end of the pump, the earlier long nosepumps, pulleys offset the belt groove back from front of the pump. So it can all be interchanged on any of the B engines, but to make it simple, just stick with the pulley and pump configeration you have now. Some of the later car have larger diameter water pump pulley as well, same diameter as the balancer, so you get a 1 to 1 drive ratio, which slows the pump down and cools the engine better, For example I'm thinking about running the later set up on my 67, to slow the water pump down.
 
Back
Top