Lotus Elan

Water pump - Recommendation for best place to have it done?

PostPost by: EPC 394J » Mon May 22, 2017 11:18 am

Hi

Before we start, sadly I don't think there's any possibility of me doing this myself, due to lack of knowledge/skills!

My water pump is rattling, but no coolant loss (yet!) So I'm looking for recommendations as to who is the most reliable, knowledgeable and trustworthy provider to do this for me? I suppose there may also be a little budget for a fairly minor head refresh??

Really appreciate any help or advice. Please do feel free to pm me, if it's politically incorrect to discuss this kind of thing in public.

My car is a 1969 Plus 2, and the engine was last apart about 2 years (4,000 miles) ago at a very well known Lotus specialist.

I am in North Lincolnshire, but can trailer the car most places in the U.K.

Very many thanks for your help.
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PostPost by: godfrsa » Mon May 22, 2017 2:08 pm

Paul Matty's would be the first place i would try, though I would not trust anybody else with my cars.They always go above and beyond to get me back on the road. They have the knowledge and expertise that money just cannot buy.
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PostPost by: billwill » Tue May 23, 2017 1:14 am

Hmmm, if they had the engine apart only 4000 miles ago why did they not replace the waterpump then ?

Maybe the pulley is merely loose on the pump boss.
http://www.lotuselan.net/wiki/ED_-_Engine_-_Water_Pump
Number 8 on this pic

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PostPost by: Paul Chapman » Tue May 23, 2017 9:17 am

Bill is right, its worth checking by removing the tension from the fan belt to if there is anything loose, also you can see if there is any lift or axial movement of the pump shaft to check the condition of the inner bearing. Fingers crossed its something minor.
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PostPost by: EPC 394J » Tue May 23, 2017 10:19 am

Thanks guys. That's a really good pointer.

Two years ago, the car had been off the road for 27 years. I was charged for a QED twincam water pump kit, amongst a number of other things, when the engine was put back together. The belt has been run very slack.
img_0099.jpg and
img_0097.jpg and
Where, then, lies the answer? In choice. Which shall it be: bankruptcy of purse or bankruptcy of life?

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PostPost by: rgh0 » Tue May 23, 2017 11:01 am

Early bearing failure ( if it is that and not a loose pulley) can be caused by a number of things

1. Poor assembly technique - possible but should not be a problem with an experienced Lotus specialist you would hope who presses in the bearing and fits the impeller and pulley bracket without loading the bearing . But getting the correct compression on the seal with corroded front covers and after market seal kits is not guaranteed and need careful checks that most would not do.
2. Over tightened V belt - not the issue if always kept slack, the belt should only be tight when the engine is hot it should be loose such that you can just turn the alternator / dynamo pulley by hand when the engine is cold
3. Blocked drain hole so that leakage contaminates the bearing - if bearing is really failing and no water leakage then the drain may be blocked ?

If all the above is OK you should get 60000 miles and 10 years at least out of the standard small bearing and more out of the larger bearing if its been fitted.

cheers
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