Improved Johnson Pump Impeller (Indmar F6B Pump)?

[rustie]

Hey guys.....these water pump impellers are usually made of standard SBR or Buna-N rubber, but I see that Bakes has an improved Neoprene rubber impeller.

Was wondering if anyone knows of a vastly superior rubber impeller? Specifically, one that is far less prone to failure if run dry for short lengths of time.

I'm aware of many superior rubber types/compositions, with VITON rubber being far better than any standard rubber (usually SBR), or Buna-N (like most 0-rings), and even substantially better than Neoprene, which already has superior fuel & wear resistance to other rubber types (NOT considering Viton).

Viton is the red tip you see on the "float needle" on high-perf dirt bike carbs....and far, far outlasts any other rubber product from chemicals, wear and/or weathering. If you weren't aware, Viton is extremely impervious to all three of these wear factors for many, many years.

Of course both will be more expensive than the standard impeller (ESPECIALLY a solid Viton impeller), but the cost would be far more than offset by that of a worn/torn impeller causing engine damage from overheating.

Sooooooo....the question is, does anyone make either a Viton "tipped" impeller....or even a solid Viton replacement impeller for these Johnson "self priming" engine coolant pumps???

[chadwick02]

well, most of that went over my head...

But a company called Globe makes a "run dry"impeller. My self and lots of others on this site have had very good success with them.

[Bill_AirJunky]

My Globe is just about a year old now. No clue how it's doing other than the boat never runs hot.

Maybe I'll pull it out next winter & check it out. Has anyone looked at theirs since they were installed?

[99response]

Viton is usually for high temperature seals with chemcial products, and from a sealing standpoint isn't the best choice for cold water anyway.

I've seen a regular impeller go 5+ years and easily 600 or 700 hours before being replaced, so not really a huge issue, espeically if the driver just pays attention to the boat and gauges while their operating.

[obski]

My Globe is just about a year old now. No clue how it's doing other than the boat never runs hot.

Maybe I'll pull it out next winter & check it out. Has anyone looked at theirs since they were installed?

not yet. I figure I will take it out and take a look after this season. I only contort myself into the shape of a bad pretzel every two years.

[Bill_AirJunky]

I've seen a regular impeller go 5+ years and easily 600 or 700 hours before being replaced, so not really a huge issue, espeically if the driver just pays attention to the boat and gauges while their operating.

True, seen the same here. But I suspect the boat was never winterized & got used all year round, so the impeller never had a chance to dry out, get run dry, etc.

At the same time I've personally had a Johnson blow apart in the 2nd year. In a boat that I winterized often, several times a year.

Edited May 29, 2009 by Bill_AirJunky

[99response]

I'm talking boats that were run up in Maine and alot that were run at childrens camps for only 12 weeks a year.

Kinda scary cracking the factory paint off the impeller housing and gasket after 3, 4 or 5 years

[Bill_AirJunky]

I'm talking boats that were run up in Maine and alot that were run at childrens camps for only 12 weeks a year.

Kinda scary cracking the factory paint off the impeller housing and gasket after 3, 4 or 5 years

Hmmm, so how many hours does a boat get run in a situation like that? Maybe the impellers last a certain # of hours?

[dalt1]

My Globe is just about a year old now. No clue how it's doing other than the boat never runs hot.

Maybe I'll pull it out next winter & check it out. Has anyone looked at theirs since they were installed?

I pulled mine last winter after 110 hours of use during the year. Looked like brand new. I put in my 2nd new one and saved the first for my spare. The year before, I had a standard Johnson with 1 fin missing about 1/3rd of it. Same use in same period of time.

I may try for 2 years on this one. I need to get a couple more for future use.

Edited May 30, 2009 by dalt1

[99response]

I'm talking boats that were run up in Maine and alot that were run at childrens camps for only 12 weeks a year.

Kinda scary cracking the factory paint off the impeller housing and gasket after 3, 4 or 5 years

Hmmm, so how many hours does a boat get run in a situation like that? Maybe the impellers last a certain # of hours?

500 ish was pretty typcial...the impellers that came out didn't look pretty but the boats still pulled water and didn't overheat.

Not reccomending it but I've seen it.

-Chris

[Bill_AirJunky]

I know we've seen tons of hours. But if your the kind of guy who wants to keep his boat maintained, then we'd usually do like Denny just described. Run it for a year or two, pull the old one & use it for a spare, install a new one. Anyone think the Globe will go 3 years? Or will it make it 2 years?

I kept my old Johnson & the Globe is going on it's second season now. I'll probably think about getting another Globe next fall / winter & start the rotation again. Suppose Greg will do another GB for them again?

[obski]

I puled mine last winter after 110 hours of use during the year. Looked like brand new. I put in my 2nd new one and saved the first for my spare. The year before, I had a standard Johnson with 1 fin missing about 1/3rd of it. Same use in same period of time.

I may try for 2 years on this one. I need to get a couple more for future use.

That could have ended poorly for your engine. It is reassuring to hear that under the same conditions the Globe was looking good. I too will probably replace mine after this year - the second on this impeller.

[rustie]

I pulled mine last winter after 110 hours of use during the year. Looked like brand new. I put in my 2nd new one and saved the first for my spare. The year before, I had a standard Johnson with 1 fin missing about 1/3rd of it. Same use in same period of time.

I may try for 2 years on this one. I need to get a couple more for future use.

Now that is some great info! Thanks for the heads up on the Globe guys!!!

Anyone know the proper model number Globe to order for a 383 Hammerhead???

[rustie]

Did a little research and found that the OEM Indmar part is a Johnson #09-812B-1, but the only cross-ref number Globe shows on their site is a #09-812B, with no "-1".

Soooo, the cross-ref shown for the 09-812B is a Globe #100J.

Can anyone confirm this is what you have in your pump?

[D-GOOSE]

I should be running the Globe GB this fall again.

Yes the #100J fits most all Malibu's. I would say all but then I'm sure some one would prove me wrong. The older modles are the one's that have a higher chance of being a different impeller.

I have had my impeller in for a yr and not looked at it but don't put on near the hours as others and would count on them more. I did hear of one person that has to run through a canal with weeds and the globe holds up well. What happens in his case is that he will be idleing through the canal and see the temp go up, then he shuts down's go's back to his strainer to clean it out and puts it back together and keeps on going. In the past the stock impeller would heat up and loose a fin from time to time but has not had a problem that I know of.

One thing I have heard but have no true facts on, is when using a fake a lake some time's it would not prime right away. The fix is to hook up the fake a lake turn on water, start up motor, see if water is coming out ext and if not shut of and re-start.

As a side caution note, make sure when hooking up the fake a lake you have it on the eng intake hole and not a ballast hole.

[obski]

I should be running the Globe GB this fall again.

Yes the #100J fits most all Malibu's. I would say all but then I'm sure some one would prove me wrong. The older modles are the one's that have a higher chance of being a different impeller.

I have had my impeller in for a yr and not looked at it but don't put on near the hours as others and would count on them more. I did hear of one person that has to run through a canal with weeds and the globe holds up well. What happens in his case is that he will be idleing through the canal and see the temp go up, then he shuts down's go's back to his strainer to clean it out and puts it back together and keeps on going. In the past the stock impeller would heat up and loose a fin from time to time but has not had a problem that I know of.

One thing I have heard but have no true facts on, is when using a fake a lake some time's it would not prime right away. The fix is to hook up the fake a lake turn on water, start up motor, see if water is coming out ext and if not shut of and re-start.

As a side caution note, make sure when hooking up the fake a lake you have it on the eng intake hole and not a ballast hole.

Personal experience?

[martinarcher]

Haha - that would suck.....

"This stupid thing will NOT prime!!!"

[petemac]

Hey two questions, do you do your own work replacing impeller? When have it done do you replace the housing?

[martinarcher]

Yes.

No! The housing doesn't get replaced, just the impeller and the cover gasket.

[D-GOOSE]

I should be running the Globe GB this fall again.

Yes the #100J fits most all Malibu's. I would say all but then I'm sure some one would prove me wrong. The older modles are the one's that have a higher chance of being a different impeller.

I have had my impeller in for a yr and not looked at it but don't put on near the hours as others and would count on them more. I did hear of one person that has to run through a canal with weeds and the globe holds up well. What happens in his case is that he will be idleing through the canal and see the temp go up, then he shuts down's go's back to his strainer to clean it out and puts it back together and keeps on going. In the past the stock impeller would heat up and loose a fin from time to time but has not had a problem that I know of.

One thing I have heard but have no true facts on, is when using a fake a lake some time's it would not prime right away. The fix is to hook up the fake a lake turn on water, start up motor, see if water is coming out ext and if not shut of and re-start.

As a side caution note, make sure when hooking up the fake a lake you have it on the eng intake hole and not a ballast hole.

Personal experience?

maybe but figured it out before turning on the water.