Help Please! Overheating issue..

[rtomblin]

Got most of the pieces out, can't really tell yet if all of the fins are outta the boat or not, the thing looked like it damn near exploded... How do I backflush any remaining pieces out?

Also, my housing isn't a perfect circle. It looks warped. So do I have to get a new housing too?

[kko]

I would follow the outlet hose to the first cooler thats where they get caught.

[Fast1911]

I've never had any pieces actually go past the housing, they are usually inside the housing or I have found some in the intake hose from the bottom of boat

[rtomblin]

I'm going to go pull the pump out today, and if I'm missing pieces, I'm curious of the best way to flush them out. What are yall's takes?

[Fast1911]

I think the Sierra ones that I get are around $20, I try to replace mine every year to 18 months no matter what so the life span isn't really a concern

[kko]

You can hurt your motor with a broken $40 dollar impeller just as easily as a broken $12 dollar one.

NO CHIT! I understand that. The question was how much life are guys getting of them. 1 yr 2yr or more how many hrs? So you are telling me you have compared the 2 and there is no difference in quality?

[River Runner]

How much life do you guys get out of a $12 Impeller? That scares the hell out of me a merc. will run you 40ish what kind of quality can you be getting for $12.Is there a mane brand on it? Not sure I want to risk my $5K motor on a $12 impeller. But if it works for you great!

You can hurt your motor with a broken $40 dollar impeller just as easily as a broken $12 dollar one.

Neither one is built like a brick chit-house!

[kko]

How much life do you guys get out of a $12 Impeller? That scares the hell out of me a merc. will run you 40ish what kind of quality can you be getting for $12.Is there a mane brand on it? Not sure I want to risk my $5K motor on a $12 impeller. But if it works for you great!

[rtomblin]

Thanks a lot guys!

[R&T Babich]

Here is info on our raw water pump on our 350 Mag MPI:
raw water pump - 46-807151A 9, Go2Marine 77494
impeller - 2 9/16” dia, 2” wide, 8 blades, 3/4” shaft, single flat
impeller - 47-59362T 1, Sierra 18-3087, Go2Marine 77527

The impeller is $12.54 plus shipping here: http://www.georgiawatersports.com/Pr...dcategory=2244
There are many places to get them.

[rtomblin]

Yeah I have the Merc motor. Anybody know a good place to pick up an impeller here in Oklahoma City? Or should I order one online? Not quite sure of the part #

[Fast1911]

Thats a good reference but for him to change the impeller he will have to pull off the whole water pump assembly.

I'm sure he has a Merc motor which you do have to remove the entire housing from the engine, doesn't make it any easier being a V-drive either

[zad0030]

Here is a good link with pictures referring to an impeller change out:

http://www.tigeowners.com/forum/show...mpeller+change

Thats a good reference but for him to change the impeller he will have to pull off the whole water pump assembly.

[Fast1911]

Here is a good link with pictures referring to an impeller change out:

http://www.tigeowners.com/forum/show...mpeller+change

[Fast1911]

i would start by changing the impeller. do a search on impeller change, you will find all the info you need.

definitely change the "raw" water pump impeller

You folks are speaking of the impeller that propels the boat, not the impeller in the water pump, correct? I guess I need to get an impeller pull huh...

no, they are speaking about the small water pump before the main water pump on the engine, the pump that sucks lake water up to feed the main water pump

Sounds like the over heating is due to a bad impeller. If you pull it out and find the impeller is toast, inspect the housing real close for scaring and blueing. A bad housing will lead to repeated impeller failure if not replaced. I hope the engine noise you heard was just spark knock from the excessive temp, 250 is pretty warm for and engine with no water in it.

X2, inspect the housing thoroughly, I replaced my impeller after two outings because I didn't check the inside, there was a small groove in the housing that wore the new impeller down fast, had to replace the entire housing