Factory Merc impeller with plastic insert instead of brass?

[Forkin' Crazy]

When did they start doing this?

[pkstv]

You can still order the brass impeller part # 47-89984T 4

[eli]

ebay item impeller 131382643092 pt number 89984t4 8.99 each buy as many as you want cant beat it

[Forkin' Crazy]

You can still order the brass impeller part # 47-89984T 4

Yea, pretty sure that is what I ordered. I ordered from Bam and they don't even list a 4T3, but that is what I got.

[Dave S]

You want the plastic......It lasts longer. Rubber likes plastic .... spins off brass......

[daytrader]

The brass vs plastic thing was discussed a few years ago on here. It seems at that time guys were saying brass was better than plastic, if I remember right. Ive always respected Dave S opinions. Now I dont know what to think. I just bought one with a brass insert from Doug Russell Marine.

[rock]

I don't think it makes much difference. Had a tech in Florida tell one of my customers the plastic was not good and the brass developed 2 lbs more pressure. I guess whatever it takes to sell something just not the way I do things.

Rock

[flabum1017]

For whatever reason, they put the plastic ones in the outboards and the brass ones in the sterndrives...... I have seen more brass hubs spin than plastic ones fwiw

[Capt.Insane-o]

Split the hub on the plastic ones under some ridiculous circumstances. Never had issue one with the brass.

[daytrader]

Thats whats nice, several guys on this thread always try to help people with the right info. Gotta respect Rock, Dave S, Flabum,others include Barry Srawn, instigator, Delawarerick, Forkin Nuts, and since Im now senile I cant remember them all from the early days of this site. and of course T REX. And many more recent members I dont know. Thank you. OOPS, almost forgot CAPTAIN INSANE O

[Capt.Insane-o]

If you have a mundane set up it matters not, saltwater I'd use the plastic. Freshwater with a spinner, brass. I broke 2 plastic hubs with my 2.0 champ motors. Brass, never, ever had a problem in 32 years. Maybe things are different in Florida

[flabum1017]

If you have a mundane set up it matters not, saltwater I'd use the plastic. Freshwater with a spinner, brass. I broke 2 plastic hubs with my 2.0 champ motors. Brass, never, ever had a problem in 32 years. Maybe things are different in Florida

Probably the salt water corrosion...... brass does not hold out well in salt water.......

[Dave S]

I could see plastic splitting...Brass never, just when they get old and not replaced the plastic don't slip off the rubber. If you change yearly brass should be good to use.