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gambler183gt
11-24-2003, 06:49 PM
I purchased a 1987 merc 175,is was short a few pieces,one being the water tube.what is the exact length of this tube?I believe it is 1/2 inch dia.It is a 20 inch mid.Is this a special copper tube or can a piece of rigid copper be used?thanks for any help...
Stoker100
11-24-2003, 08:25 PM
my tube is 18 1/8" long
.813 outer diameter
Here there are different ones
Carter Powell
11-24-2003, 11:15 PM
All of the motors I have seen from that time period including three original tubes that I have are 18.750" in length. Regular 1/2" rigid copper tube from a hardware store is the same stuff.

Carter Powell
Stoker100
11-25-2003, 10:52 AM
Isn't .813 kinda like 3/4 inch?
No wonder I have so much trouble figuring out my water pump!
ON THE HUNT
11-25-2003, 02:16 PM
Yeah 1/2,5/8 and 3/4.
Balzy
11-25-2003, 07:41 PM
loke the 280's and newer. 18 1/8" is corrrect for that tube. The 1/2" is longer because the water pump doesn't use the adaptor. I changed mine over to a 3/4" when I put a new 280 1-piece adaptor on my 260.
Stoker100
11-26-2003, 10:07 AM
Do you have the pump PN required for the bigger tube>
I want to pick-up a complete pump
Thx
larry
MTCM
11-26-2003, 10:57 AM
P/N for 3/4" Water Pump Housing................:D
Stoker100
11-26-2003, 11:24 AM
Thx
Steven
11-26-2003, 01:07 PM
i may i have the one that you need. im the guy that sold you the 5 petal reeds. the length is 18 11/16, best i could tell. its not straight. its 1/2 in dia.:)
Raceman
11-26-2003, 05:47 PM
Naaaaaaaaw, you guys need to buy that stuff from Merc. The tube itself is about 30 bucks and the plastic guide tube is over 30 bucks more, or about $60. total. Not a bad markup for about 2 dollars worth of stuff at a retail hardware store.
Balzy
11-26-2003, 08:26 PM
I did a post about it last year. I made my own adapter and modified the standard pump housing. Made my own guide tube too. Mine doesn't fall off while you install the lower like the Merc one does either.:eek: :eek: :eek: The standard housing is like 18 bucks and the 3/4" housing is 80 something if I remember right. Oh yea, the housing themselves have the same part # cast into them !!!!!!!!! :mad: :mad: :mad:
thaw ripper
11-27-2003, 12:27 AM
:D Happy Thanksgiving!:D
gambler183gt
11-27-2003, 10:14 AM
Now thats what i'm talkin about! Thank's for the info and pic...