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View Full Version : Impeller Replaecment 1981


ctjahn
11-18-2010, 09:31 PM
All,

I searched the forum for the impeller replacement thread for a 1981 Stars and Stripes with a 351. I kept an email with the thread and I just cant find it. Could someone help me find it?

Thx
Cj

east tx skier
11-18-2010, 11:17 PM
Figure it's a PCM. Check here (http://www.aquaskier.com/articles/impeller_replacement.htm).

Easy stuff. Make sure you mark that pump. You don't want to reinstall it backwards.

ctjahn
11-19-2010, 05:08 AM
Thx East TX! How can I confirm it is a PCM? I think it is...
It doesnt say on the valve covers like I have seen on other boats.
Hoping to start the hose replacement project this weekend
(and impeller if time permits)

Cj

east tx skier
11-19-2010, 10:06 AM
Thx East TX! How can I confirm it is a PCM? I think it is...
It doesnt say on the valve covers like I have seen on other boats.
Hoping to start the hose replacement project this weekend
(and impeller if time permits)

Cj

Is your water pump offset starboard side of the center line or is it just about dead center behind the pylon?

I say that on the off chance you have a repower. 99.99% sure it's PCM if it's an all original 81. If it's off center to starboard, then it's a PCM and you have to take the pump housing apart to get to the impeller. It seems more involved than the plate removal access on an Indmar motor, but, in fact, it's a lot easier because you spend less time since you're not trying to dig the impeller out without tearing it up. Just be sure to mark your pump orientation so you don't reinstall it 180 degrees. This is easy to put in backward and you don't want to be pumping water out of your engine and into the lake. :o

FrankSchwab
11-19-2010, 02:09 PM
you don't want to be pumping water out of your engine and into the lake. :o

Wouldn't that be a good way to get rid of the interminable "winterization" threads on this list? :rolleyes:

M-Funf
11-19-2010, 03:10 PM
Figure it's a PCM. Check here (http://www.aquaskier.com/articles/impeller_replacement.htm).

Easy stuff. Make sure you mark that pump. You don't want to reinstall it backwards.

Eastie,
They didn't offer the Escort conversion as late as '81?

east tx skier
11-20-2010, 08:46 AM
Eastie,
They didn't offer the Escort conversion as late as '81?

By 81, I would be a little surprised. A picture would be pretty helpful.

1redTA
11-20-2010, 08:57 AM
My 81 is as Eastie has described. Pump nearly behind drivers seat, take it apart and no fuss pulling the impeller. I highly recommend marking the pumps orientation

ctjahn
11-20-2010, 04:09 PM
Maybe next weekend. Had to fix a window the dogs went though yesterday...
Cj

ctjahn
12-11-2010, 02:20 PM
78 S&S 351 PCM

I am half way into it and found the woodruff key (pardon spelling) is almost completely gone. I cant believe the pump even worked!!! (I wasnt going to tear into it because the impeller looked so good looking down the holes; its blue instead of black but still looks good; good thing I dug into it. Replacing impeller anyways and using the blue one as a spare)

So, I was so careful to mark the hole positions and impeller orientation but DIDNT mark how the pump itself is installed...I was so worried about the impeller orientation (which doesnt apparer to matter). That I didnt mark the pump orientation...

Now I have to reorient it...SO on a SHERWOOD pump....Does the word Sherwood go towards the motor? (Or away) From what I can tell from pictures on the site, The "bump side" goes out and the input/output goes closer to the motor since it is offset).

Anyone have a pic to show the proper setup? (no camera handy)

Please Help!!
Cj

east tx skier
12-11-2010, 02:26 PM
They look so close whether installed correctly or 180 that I couldn't say. Someone more familiar with them may know. Ultimately, if you decided to run the boat hooked up to a bucket of water and the boat puts water in the bucket instead of removing the water from it, you installed it wrong.

You're correct that impeller orientation is less important.

Cloaked
12-11-2010, 03:40 PM
78 S&S 351 PCM

I am half way into it and found the woodruff key (pardon spelling) is almost completely gone. I cant believe the pump even worked!!! (I wasnt going to tear into it because the impeller looked so good looking down the holes; its blue instead of black but still looks good; good thing I dug into it. Replacing impeller anyways and using the blue one as a spare)

So, I was so careful to mark the hole positions and impeller orientation but DIDNT mark how the pump itself is installed...I was so worried about the impeller orientation (which doesnt apparer to matter). That I didnt mark the pump orientation...

Now I have to reorient it...SO on a SHERWOOD pump....Does the word Sherwood go towards the motor? (Or away) From what I can tell from pictures on the site, The "bump side" goes out and the input/output goes closer to the motor since it is offset).

Anyone have a pic to show the proper setup? (no camera handy)

Please Help!!
Cj
Here's the correct orientation.

Put never-sieze on the hose connections (inside the hose and / or on the necks of the inlets / outlets). They will come off much easier next time.

.

ctjahn
12-11-2010, 04:24 PM
Thanks guys.

Much appreciated. Instant answers from great people. This forum is so helpful. What a great community... I did have it right! (Guestimated based upon the direction of the motor turning)

I should warn everyone: dont just focus on the obvious. If I would have looked at the impeller and left it I could have had a bad weekend in the future...Since the woodruff key was 99% gone.... (Or the wrong one was used in the past)

Cj

454Prostar190
12-12-2010, 08:44 PM
My Stars and Stripes has a big block Chevy with a Glenwood pump and a totally different set up.

So, I Googled 'Sherwood Pumps' and found their site with some pictures. May help a bit.

http://www.sherwoodpumps.com/en-us/

P.S: Looks like I'm late!

ctjahn
12-13-2010, 10:31 AM
Here's the correct orientation.

Put never-sieze on the hose connections (inside the hose and / or on the necks of the inlets / outlets). They will come off much easier next time.

.

Thanks everyone...

RE: Quote - Never-sieze? Is there any special brand or can I just use the silver stuff I have in stock already? I have all new hose that I hope to cut and install this weekend... Not looking forward to it as it has the wire in it.... I suppose I will be using a chop saw for clean cuts.

In the meantime, I have been detailing the motor

Thx!
Cj

oldairboater
12-13-2010, 12:06 PM
Different brands of anti-seize are sometimes different colors. I have used a gray and a bronze color without paying attention to brand. Others may differ but in my opinion if I plan on removing something again in my life then it gets anti-seize and torqued to specs. I hate cutting rubber hose with my good saw blades----I just use a box cutter for the hose and side cutter pliers to snip wire if it has wire.