Raw Water Pump Update.

The Jester

The Jester

Well-known member
Thought i'd put this up in case anyone has to order a new Johnson raw water pump for a Nanni 5.250 TDI engine.
I've just tried the 2nd pump on the boat tonight and it doesnt fit :(. I've put some pics on for reference.
First pump had an oval flange on it, so i did'nt take it from the shop.
DSC00800.jpg

DSC00802.jpg

The second pump (pictured), has the correct flange, but the raised shoulder which locates into the block is too long, i thought it might have fit, but the recess the shoulder fits into on the block is too shallow. So its off to Storrar Marine again tomorrow to try again.
Both pumps were direct from Nanni, the latest one being £70 more than the first, thats now £467.00.
Hat off to the guy at Storrar, he's trying hard to sort it out , when i left today he said " Dont worry if it doesnt fit we'll sort it ".:)
 
jester,dont know if it would work but could you not have a spacer piece milled to reduce the depth on the collar so it gives you the correct amount of slip needed? might be worth a try if its going to save you a few quid!
 
Hi BA33, I took the pump back today, and left my old pump with them as i would like the correct pump, if thats not possible, the i'll look at taking the adaptor plate off the engine, which is held on by the 4 bolts you can see in the pic, and get it lathed out to suit the depth of the collar which is on the new pump in the pic.
If i do this the collar on the pump will be 2-3mm off the pinion you can see in the engine housing......Not sure if thats too close, so i'll give Storrar another chance to get the correct pump.....Cheers...Chris...
 
use the Pansy method - drill a hole in the bottom of the boat that will squirt water all over the engine and just hoy a couple of extra bilge pumps in
 
Hi Keith , The shaft on the new pump looked different, think it had another bearing and the seals sat in a different location on the shaft. At £460, i would'nt like to chance it, I'll let Storrar sort it out, afterall they're getting well paid for it.

Hi Mark, I've made a note, "Dont go out fishing with Mark in Pansy" :D:D
 
Your certainly having a tough time with that pump mate ....... on the good side when it's done and sorted it'll be done for good .... well :rolleyes: should be :)

norm
 
Yeah, Norman it'll get sorted and as long as the seas rough i'm not really that bothered, on the plus side its a learning curve, i now know about Nanni type raw water pumps.....:D
 
Now been informed the pump is no longer manufactured, so the new pump i got last week is the replacement model, this needs an adaptor plate which is £140.00 + vat :o. but Storrar say they will let me have it for what they pay which is £70.00 + vat :(. Hopefully all will be sorted by the weekend and its fishing all the way....:):):)....Total cost £540.00....:(:(:(
 
thats a right kick in the "coco pops" mate:( however you can now go to sea knowing you have sorted the job properly,and not lookin at the pump every 5 minutes:)however,:)just in case,:)dont forget a bucket:) happy sailing/fishing:D
 
It it makes you feel any better the frost has made a couple of the blades brital and showing cracks so i have ordered a new one but not at the cost your talking about for a full pump....mine was only £14 with p&p..will fit it at the weekend then its only needing a clean and to wet a line.
 

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