texasfishingforum.com logo
Main Menu
Advertisement
Affiliates
Advertisement
Newest Members
FF1437, ccr622, BigGds, Tonka2005, Brownie-buster
112852 Registered Users
Top Posters(All Time)
TexDawg 94,590
hopalong 86,568
Pilothawk 79,700
John175☮ 77,203
JDavis7873 67,398
Derek 🐝 64,232
Bigbob_FTW 64,155
Mark Perry 59,760
Tritonman 58,900
facebook
Forum Statistics
Forums62
Topics779,282
Posts9,828,600
Members112,852
Most Online36,273
Jan 23rd, 2013
Print Thread
question about impellers #13549480 05/07/20 10:49 PM
Joined: Jul 2006
Posts: 2,502
D
dogsdad Offline OP
Extreme Angler
OP Offline
Extreme Angler
D
Joined: Jul 2006
Posts: 2,502
I run a 1991 Mercury 135-horse motor. It's been very reliable since we bought the boat back in about 2003. I had to change the impeller last weekend because the motor would run a little too hot intermittently last time out on the water. When I removed the old impeller from the water pump housing, it was still in good shape as far as flexibility goes, but it had taken an obvious eccentric set and I could easily see why the water pump was not keeping the motor cool. I rebuiilt the water pump, changed out the poppet valve and both thermostats, and zipped it all up before adding a bit of lower unit oil. I ran it in the driveway a little while and all is well.

Then a while ago the idea popped into my head---why not just flip the impeller over and run it the other direction for a season or two? If the rubber is or seems to be in good condition, why not? Has anyone ever done that routinely? Has anyone tried it and wished they hadn't?


It seems to me that anyone who wants to force upon the rest of us the character of sheep must himself be a wolf.
Re: question about impellers [Re: dogsdad] #13549546 05/07/20 11:45 PM
Joined: Feb 2006
Posts: 2,270
B
bronco71 Online Content
Extreme Angler
Online Content
Extreme Angler
B
Joined: Feb 2006
Posts: 2,270
Bad idea, reverse direction will surely crack/break the fins. Best to change every 2 years regardless of use, very small price compared to engine replacement.

Last edited by bronco71; 05/07/20 11:46 PM.

1999 Triton TX21/225 Mercury Optimax
Re: question about impellers [Re: bronco71] #13549660 05/08/20 01:22 AM
Joined: Jul 2006
Posts: 2,502
D
dogsdad Offline OP
Extreme Angler
OP Offline
Extreme Angler
D
Joined: Jul 2006
Posts: 2,502
Originally Posted by bronco71
Bad idea, reverse direction will surely crack/break the fins. Best to change every 2 years regardless of use, very small price compared to engine replacement.



I agree with you in your belief, but I would like to find out what anyone KNOWS...as in, voice of experience.


It seems to me that anyone who wants to force upon the rest of us the character of sheep must himself be a wolf.
Re: question about impellers [Re: dogsdad] #13549661 05/08/20 01:23 AM
Joined: Oct 2012
Posts: 1,651
S
smooth move Offline
Extreme Angler
Offline
Extreme Angler
S
Joined: Oct 2012
Posts: 1,651
i dunno. i kinda like that idea. only thing is that if you're taking it apart anyway, why not just put a new one in and relieve any doubt.


es le bon ton roulet
Re: question about impellers [Re: dogsdad] #13549757 05/08/20 02:44 AM
Joined: Jan 2005
Posts: 6,347
P
Pat Goff Online Content
TFF Celebrity
Online Content
TFF Celebrity
P
Joined: Jan 2005
Posts: 6,347
The impeller is designed to.seal off the top of the housing. Your key slot won't fit right and itll.just pour.water into.the.exhaust and not up.the water tube.

That's from experience.putting one upside down..


Pat Goff
Seadrift TX
[Linked Image]

Re: question about impellers [Re: smooth move] #13549789 05/08/20 03:13 AM
Joined: Jun 2011
Posts: 1,748
R
River Man Offline
Extreme Angler
Offline
Extreme Angler
R
Joined: Jun 2011
Posts: 1,748
Originally Posted by smooth move
i dunno. i kinda like that idea. only thing is that if you're taking it apart anyway, why not just put a new one in and relieve any doubt.


THIS.....

Re: question about impellers [Re: dogsdad] #13549994 05/08/20 12:39 PM
Joined: Mar 2003
Posts: 7,953
F
Fishin' Nut Online Content
TFF Celebrity
Online Content
TFF Celebrity
F
Joined: Mar 2003
Posts: 7,953
I haven't changed one on a Mercury, but the Yamaha impeller only goes on one way. But what bronco71 said is true, The chances of failure and a very expensive repair are not worth the price of a new impeller. Plus it will probably fail under load which means you are going to be stranded on the water, not in the driveway.




Kirk Long (Kikr) March 4, 1959 - June 19, 2009
I guess the Lord needed a fishing buddy more than me.
Re: question about impellers [Re: dogsdad] #13552175 05/10/20 10:27 AM
Joined: Jul 2009
Posts: 1,067
S
Skunked Again Fishing Online Content
Extreme Angler
Online Content
Extreme Angler
S
Joined: Jul 2009
Posts: 1,067
It would be really hard to reverse the bend and put it back into it's space. But if you could do it, and the rubber is still pliable, sure that would work. But let me tell you a story about a clutch I replaced when I was in college. It took me 6 hrs to unhook the transmission to replace the clutch. 1yr warranty was $50, lifetime warranty was $65. I saved $15, but had to replace it 1yr later. 6 more hrs and I paid $65 for the lifetime. Didn't have to mess with it again.

The moral is: if you took all that labor to get to it, spend the $20, or you'll have to do it again. Unless your time is worth less than $5/hr, spend the $20.
Tim


One 10-pounder is better than ten 1-pounders; but 100 1-pounders is ok too!
If this kind of stuff floats your boat, be a subscriber to my youtube Channel: www.youtube.com/SkunkedAgain
Get exclusive information by following SkunkedAgain Facebook page: www.Facebook.com/SkunkedAgain
Re: question about impellers [Re: Pat Goff] #13556208 05/13/20 04:44 PM
Joined: Jun 2008
Posts: 333
B
Basscat8263 Offline
Angler
Offline
Angler
B
Joined: Jun 2008
Posts: 333
Originally Posted by Pat Goff
The impeller is designed to.seal off the top of the housing. Your key slot won't fit right and itll.just pour.water into.the.exhaust and not up.the water tube.

That's from experience.putting one upside down..


+1


Tony

Previous Thread
Index
Next Thread


© 1998-2019 OUTDOOR SITES NETWORK all rights reserved USA and Worldwide
Powered by UBB.threads™ PHP Forum Software 7.7.3