After 29 years, my aluminum impeller was looking like this:
http://i40.photobucket.com/albums/e2...Picture010.jpg
I was getting a little nervous about the wear, cavitaiton burns and rock dings. It was probably ok to run this year, but I really didn't want to chance blowing a big hole in my nice AT bowl... plus my buddy had a new AT stainless A w/ bronze shouldered wear ring in the shop, so we tore it apart.
http://i40.photobucket.com/albums/e2...sh/repair3.jpg
http://i40.photobucket.com/albums/e2...sh/repair5.jpg
http://i40.photobucket.com/albums/e2...sh/repair4.jpg
http://i40.photobucket.com/albums/e2...sh/repair1.jpg
We got the new bronze wear ring in...
http://i40.photobucket.com/albums/e2...sh/repair2.jpg
...but didn't like the way the suction housing looked, so we decided to take a little aluminum from it to smooth the flow to the impeller. I'll post more pics when we finish this week.
Cheers.....
wow, for 29 years of abuse it didnt look that bad. but you should be real happy with the new one. carefull with the bowl work. it doesnt take much to screw em up. leave all the leading edges and just smooth out the surfaces. or better yet, talk to a professional before you dig right in. otherwise, way cool man, hope you are fully satified with the new stuff.yippee.
oops, just re-read it and notice your not touching the bowl. and yes smoothing out the suction housing is a good idea. good luck.
http://i40.photobucket.com/albums/e2...Picture010.jpg
Funny, thats almost exaclty what mine looks like.
Hoping to have a new impeller and the pump rebuilt by next month.......
Have that new impeller detailed before you install it. They are pretty crude out of the box. It will make a difference.
wow, for 29 years of abuse it didnt look that bad. but you should be real happy with the new one. carefull with the bowl work. it doesnt take much to screw em up. leave all the leading edges and just smooth out the surfaces. or better yet, talk to a professional before you dig right in. otherwise, way cool man, hope you are fully satified with the new stuff.
oops, just re-read it and notice your not touching the bowl. and yes smoothing out the suction housing is a good idea. good luck.
My buddy that used to race/owns jetboat shop/etc is doing the work to the suction housing... I'd be sure to screw it up by myself. The transition from the intake to the suction housing was horrible. There were some mismatches at the suction housing/wear ring junction as well. It simply looked like 1) my boat got a berk with crappy casting imperfections, and 2) eliminator must have been in a hurry when assembling my pump.
I'm really anxious to see whether that big 40lb lug of an impeller matched with a shouldered wear ring will improve performance much. I have a distinct feeling my pump was slipping a bit before, because when I choked my nozzle down a bit with a 3.125 insert (in an attempt to boost nozzle pressure & speed) I ended up with higher revs on the tach and slower speed on gps, as opposed to my old insert which was larger, spun less revs at top end and went faster on gps. Go figure. At any rate, the stainless impeller will fare a whole lot better than the old aluminum on the shallow rivers I run.
Have that new impeller detailed before you install it. They are pretty crude out of the box. It will make a difference.
Detailed? Please explain. It looked far from crude, and beautifully machined to me.
Detailed? Please explain. It looked far from crude, and beautifully machined to me.
They sharpen the edges and smooth the blades and yes it is pretty crude compared to a detailed impeller. Look at the edges in this pic and you can see.
http://i40.photobucket.com/albums/e2...sh/repair3.jpg
10-4 man. Part of the reason those edges look a little rough is because it was run a few times in an Eagle before being swapped out for a turned down impeller... and took a few rock dings in the process. We'll clean it up before installing!
When it's said to "Sharpen" the edges on the impeller,
what is considered sharp? Also, what would be the
differences between the bronze shouldered wear
rings and the stainless ones? I've heard the shouldered
ones impede flow? What's the hot ticket for todays
jet pumps?
Is that really all there is to removing the impellar or is it harder than it looks?
The impellar is the only thing I haven't messed with on the Sanger and it could probably use a fresh one considering my father has has never replaced it in the 16+ years he has owned the boat.
It's gotta be more difficult than the pics show.:jawdrop:
I am very curious as to what I would be getting into.
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