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Author Topic: Water pump - wrong one?  (Read 1138 times)
my124677n
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« on: December 24, 2010, 05:25:31 PM »

I have a 67 with an original 327.  I had a squeal from my alternator belt and noticed that the water pump pulley and alternator pulley dont match up (off set).  Does this water pump look original to the car, or was it for a diiferent sb chevy.  At one point the offset was almost 2 inches.  I was able to bang the bracket forward and now the off set is about 3/4 of an inch, but still causes some squealing from time to time. Any ideas???
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x77-69z28
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« Reply #1 on: December 25, 2010, 10:14:00 AM »

its hard to tell from the pic. you do know that the alternator goes in front of yhe adjuster brkt ? get the part number off the pump.
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69 x77 burnished brown, 711 int 05A bought in 78
67 rs/ss 350 butternut yellow 4 speed 2nd owner
70 Z28 forrest green, green int, M40, bk vinyl roof PROJECT
99 SS hugger orange 6spd NO TTOPS bought new 1 of 54
11 cts-v blk diamond  edition wagon 556hp sick!
my124677n
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« Reply #2 on: December 25, 2010, 01:18:41 PM »

I had the alternator behind the bracket.  I repositioned it this morning and it looks to be 99% aligned.  Thanks for the help.
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x77-69z28
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« Reply #3 on: December 25, 2010, 02:39:43 PM »

the other thing to try is to make sure the spacer is behind the water pump pulley. easy to forget to put back on.
buddy
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69 x77 burnished brown, 711 int 05A bought in 78
67 rs/ss 350 butternut yellow 4 speed 2nd owner
70 Z28 forrest green, green int, M40, bk vinyl roof PROJECT
99 SS hugger orange 6spd NO TTOPS bought new 1 of 54
11 cts-v blk diamond  edition wagon 556hp sick!
My68SS
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« Reply #4 on: December 27, 2010, 02:41:03 PM »

The water pump looks fine with short legs and close to the timing cover.
Water pump pulley to crank pulley alignment looks right too [hard to tell in the pic though] so I'd guess it's only an alternator position problem.
'Banging' the bracket forward sounds a bit harsh!  especially by the amount you quote Shocked
Post up a pic of the alternator and bracket.

btw, that's a head twisting pic - trying to separate the timing cover from the pump backing plate!!
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Rob
1968 L34/M40 SS
12 bolt posi 3.55
Build - 12C
my124677n
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« Reply #5 on: December 28, 2010, 12:44:26 AM »

Here are a couple of pictures from above...plus one of the car sitting in the garage.  As I mentioned earlier, the alternator was sitting behind the bracket, so I moved it up front and it does align better now.  I may just buy a replacement bracket from Rick's, etc. and replace it to see how it aligns. I recall they are only about $25 or so...

P.S., not to make you East coast guys jealous, but I was able to take the '67 out this weekend and enjoy the 60 degree So. California weather. it was a little nippy, but I guess I can live with it!
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Hot302
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« Reply #6 on: December 28, 2010, 08:56:12 AM »

It's great to live in So. Cal.
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Rick
69 RS/Z28
No Stripes
My68SS
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« Reply #7 on: December 28, 2010, 01:17:12 PM »

Doesn't look too bad, though there may be something wrong at the bottom bracket as well, as the whole alternator 'seems' to be skewed such that the pulley end is pointing inboard.
Perhaps the bottom bolt is undersize [diameter] or some bushes are missing.
It's mostly the bottom bracket that sets the alignment, so everything has to be a close fit there.
Beware of flex fans. I seem to recall a story of one ejecting a blade through a hood.

Nice ride btw!!  Smiley
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Rob
1968 L34/M40 SS
12 bolt posi 3.55
Build - 12C
x77-69z28
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« Reply #8 on: December 28, 2010, 07:20:23 PM »

also my124677n, the bolt goes in from back to front. looks like you have a bolt through the front.
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69 x77 burnished brown, 711 int 05A bought in 78
67 rs/ss 350 butternut yellow 4 speed 2nd owner
70 Z28 forrest green, green int, M40, bk vinyl roof PROJECT
99 SS hugger orange 6spd NO TTOPS bought new 1 of 54
11 cts-v blk diamond  edition wagon 556hp sick!
My68SS
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« Reply #9 on: December 28, 2010, 08:09:05 PM »

also my124677n, the bolt goes in from back to front. looks like you have a bolt through the front.
Well spotted!! Must have a nut on the other end of the bolt  Huh
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Rob
1968 L34/M40 SS
12 bolt posi 3.55
Build - 12C
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