Impeller thread size?

[greenhut]

Anyone know the thread size/type on the impeller in the V8-380? (Impeller part number 2170045)?

Went to change the impeller yesterday, and it was not easy to remove. Dont want to muscle out to avoid scarring the soft pump metal.

The impeller is threaded, so spinning in a bolt should make it easy. Some creative googling says the Sherwood 25105 puller might work, and it is 3/4"-16 thread, but thought I'd see if anyone knew.

[Big Block Power]

Anyone know the thread size/type on the impeller in the V8-380? (Impeller part number 2170045)?

Went to change the impeller yesterday, and it was not easy to remove. Dont want to muscle out to avoid scarring the soft pump metal.

The impeller is threaded, so spinning in a bolt should make it easy. Some creative googling says the Sherwood 25105 puller might work, and it is 3/4"-16 thread, but thought I'd see if anyone knew.

Man of I remember right I think Sailor had this same issue on his r3.

[jma2@fuse.net]

The impeller for the 280-G v6 thread size is 3/4 x 16 thread. I recently purchased a 4” bolt of this size for removal. It was still a little tough to wiggle out. We have different engines, but based on your recollection, it sounds like it’s the same thread size. Here’s what I purchased for my impeller removal tool. https://www.fastenal.com/products/details/18998

[greenhut]

Thanks jma - just ordered one from bolt depot.

[Big Block Power]

Thanks jma - just ordered one from bolt depot.

Let's get some pictures and document this for future boaters. Good job guys.

[mdadgar]

Let's get some pictures and document this for future boaters. Good job guys.

Good idea.

I just ordered the "factory" Volvo Penta impeller removal tool. When it arrives, I will document it.

It was $15. It's a bolt within a bolt.

- Mark

[Big Block Power]

Let's get some pictures and document this for future boaters. Good job guys.

Good idea.

I just ordered the "factory" Volvo Penta impeller removal tool. When it arrives, I will document it.

It was $15. It's a bolt within a bolt.

- Mark

Nice. Go figure.

[greenhut]

Let's get some pictures and document this for future boaters. Good job guys.

Good idea.

I just ordered the "factory" Volvo Penta impeller removal tool. When it arrives, I will document it.

It was $15. It's a bolt within a bolt.

- Mark

Do you have a link Mark? I couldnt find a VP part - only a Johnson that sounds like what you describe, and the plastic Sherwood puller.

[greenhut]

The newer Volvo engines that use impeller part number 2170045 are threaded. 3/4"-16 thread confirmed. Going to start a changing your impeller thread.

[Krob1114]

The newer Volvo engines that use impeller part number 2170045 are threaded. 3/4"-16 thread confirmed. Going to start a changing your impeller thread.

Thanks guys. I may have purchased the wrong impeller. Just found a website that used serial number to tell me exact engine number, mine is Volvo V8-300-CE-M. It then translates to the same part greenhut referenced. I'll be interested in the thread when someone starts it. Not really worried yet about how soon I replace it as it probably has only 70 hours of moderate cruising. Going to have to find newer Youtube videos.

[greenhut]

Easiest impeller I have ever changed - with one exception. It sits TIGHT in the housing. Buy one of these:


Threads onto the impeller and allows you to pull it out. Some other impeller change suggestions...

Only use the Volvo OEM part. Some aftermarket copies are not threaded.
Impeller is only threaded on one side - be sure when you put the new impeller in that threads face out.
Lube the impeller with some Glycerin. Newer volvo impeller kits don't include the small tube.
Change the impeller when out of the water unless you have done it before and have nerves of steel. Depending on some factors, water can come pouring into the bilge if you are in the water when changing. Can plug mostly with a cloth, but easier dry...

Lastly, I would change it every year. Probably more than necessary, but if an impeller breaks into pieces finding them is a pain in the ass.

[Krob1114]

I just now was able to get to the new impeller that I ordered from www.volvopentastore.com/impellers. For Volvo V8-300-CE it said part no. 21213664.
I just clicked on the site, and it sends part no. 22307636. One site I saw said 22307636 replaces 21213664.

Impeller2.JPG

Impeller1.JPG

Does this look like the same impeller?

Found another site that has them for $57.99. The impeller in my photo is the same.
Volvo V8-300-CE:
https://www.boatersland.com/volvo-penta ... gIGS_D_BwE
Volvo V8-350-CE & Volvo V8-380-CE
https://www.boatersland.com/vlp21700445 ... gLZ5PD_BwE

It looks like the 2170045 is for the 350 and 380; 22307636 is for the 300.

[jhnmdahl]

I tried the same thing and ended up needing an M18x1.5 metric impeller puller for my somewhat older V8 (2015 vintage) but the same Volvo 21213664 impeller part number - see this thread:

viewtopic.php?f=34&t=3899&p=78220&hilit=impeller#p78220

John