What paint/ Mercury 80 probs.

A dedicated area to showcase your ongoing and completed restorations.

Moderators: Alacrity, Rapier

User avatar
welshhealey
Posts: 267
Joined: Sat Feb 07, 2009 2:14 am
CMBA Member: 71

What paint/ Mercury 80 probs.

Post by welshhealey »

What paint would be the best to use for an aluminium prop ?
Last edited by welshhealey on Thu Jun 27, 2019 7:02 pm, edited 2 times in total.

User avatar
Rapier
Site Admin
Posts: 13892
Joined: Thu Feb 05, 2009 5:16 pm
CMBA Member: 569
Location: West Glos

Re: What paint

Post by Rapier »

For your Mercury prop?
Fasten bra straps and remove dentures...

User avatar
welshhealey
Posts: 267
Joined: Sat Feb 07, 2009 2:14 am
CMBA Member: 71

Re: What paint

Post by welshhealey »

No not the Mercury as it’s a stainless one, but for my auxiliary Suzuki 6hp, talking of the Merc, still got issues with it cutting out from tickover into gear !!! Tickover set at 950+ rpm Starting to annoy me now :grrr: as carbs have been sonic cleaned and are like new, my technicians reckon it’s the lower crank seal ??? Beats me :hmmm:

kgarla
Posts: 105
Joined: Wed Jul 20, 2011 3:02 pm
CMBA Member: 143

Re: What paint

Post by kgarla »

Waterproof ! Sorry .... Kgarla !

User avatar
floater
Posts: 1065
Joined: Fri Feb 06, 2009 6:47 pm
CMBA Member: 90
Location: Southern England

Re: What paint

Post by floater »

welshhealey wrote:talking of the Merc, still got issues with it cutting out from tickover into gear !!! Tickover set at 950+ rpm Starting to annoy me now :grrr: as carbs have been sonic cleaned and are like new, my technicians reckon it’s the lower crank seal ??? Beats me :hmmm:
This is a classic problem, (assuming this is your 80hp on the winner) most common fix is to richen the mixture a bit on the needles give them each a 1/4 turn anticlockwise. If it still does it give them another 1/4. My boat has a foot throttle which is a good cheat, give it a little blip, let it die back down then into gear and open up a shade.

As for paint, anything you like, it's an auxiliary so ideally will never be used and just needs static corrosion protection. :thumbsup:

User avatar
welshhealey
Posts: 267
Joined: Sat Feb 07, 2009 2:14 am
CMBA Member: 71

Re: What paint

Post by welshhealey »

Cheers Floater, :thumbsup: I’m so glad to learn that I’m not the only one to have problems with the said issues on a Mercury, ( yes it’s the 80hp on the Winner ) so will do as you suggested and will keep you posted. With regards to the paint for the prop on auxiliary, will nip down to Halfords get a suitable colour and crack on with that soon, was just unsure that normal acrylic ( waterproof Kgarla :D ) would bond to aluminium ,as you say being an auxiliary it won’t get used much hopefully! ( unless the 80hp Merc has a bad day ! :( )

User avatar
floater
Posts: 1065
Joined: Fri Feb 06, 2009 6:47 pm
CMBA Member: 90
Location: Southern England

Re: What paint

Post by floater »

It has always been difficult to paint aluminium, it just doesn't key very well for paint. Zinc chromate is the preferred primer but I think like many other chemicals it's now banned for domestic use. We used to slap it around liberally when I worked in MoD aerospace, called it yellow peril and was essential coating between riveted or bolted aluminium components.
As I said earlier any paint will suit your application, acrylic, cellulose, Hammerite, but not emulsion :)

If the merc keeps giving you trouble post again on the engines thread. Fastjeff, Alacrity, Se7en are all merc officianados.

To see if your lower crank seal is leaking pull the bottom spark plug out. If there's water droplets on it or if it's super clean in relation to the others then it may be leaking but it's not the only cause of those symptoms So not a conclusive test for a leaking lower crank sealjust a possible indicator. If the plug is as grubby as the others, happy days the seal is good.

User avatar
Rapier
Site Admin
Posts: 13892
Joined: Thu Feb 05, 2009 5:16 pm
CMBA Member: 569
Location: West Glos

Re: What paint

Post by Rapier »

Fasten bra straps and remove dentures...

haventaclue
Posts: 610
Joined: Wed Mar 31, 2010 12:13 am
CMBA Member: 924
Location: Donegal, Ireland

Re: What paint

Post by haventaclue »

On aluminum I prime with a U-Pol etch primer,
no matter how bad it is,it can always get worse,I'm an optimist

User avatar
welshhealey
Posts: 267
Joined: Sat Feb 07, 2009 2:14 am
CMBA Member: 71

Re: What paint

Post by welshhealey »

Hi Floater, yes , it’s the lower crank seal, bottom plug is clean as a whistle compared to the other 3 :cry: just thought I’d let you know on here as it’s easier, any more posts on this as you say will be put in the engine room . :thumbsup:

Post Reply