'68 McCullogh 7.5 cooling ?

[mselby]

I recently accquired a Ted Willimas 7.5 (McCullogh, Model 57459941). Water sputters out the two holes on the back with some exhaust, but I thought there was also supposed to be a steady stream coming from the barbed nipple on the side. Is this thing cooling properly? I've only run it in a bucket, and not for too long to aviod potential overheating. Any help/advice is appreciated. Does sears sell manuals?

 

[F_R]

Re: '68 McCullogh 7.5 cooling ?

Are you talking about a large nipple, about 3/8" or bigger? That is for a bailer hose, for bailing out your old leaky boat. It's supposed to suck water, not blow it out.

Water blowing out the backside is the cooling indicator.

 

[mselby]

Re: '68 McCullogh 7.5 cooling ?

Yes, the nipple on the side is for a 3/8 I.D. tube, and about 3/4" long. If it is for bailing, how would I use it? Is there some sort of T fitting or what? As far as the water coming out to indicate circulation, does it need to be a stream or is spitting water normal?
Thanks again.

 

[F_R]

Re: '68 McCullogh 7.5 cooling ?

Spitting water is the norm as exhaust blows it out in droplets. The bailer was a feature originally on Scott-Atwater motors. It takes a hose with a screen thing on the end to keep from sucking up trash.

 

[rich2481]

Re: '68 McCullogh 7.5 cooling ?

dang I wish I had researched, cost me 50 bucks a piece for the 2 impellers, wouldnt have replaced the bilge pump, my motor my dad got for 10 bucks at a yard sale, spit water out the exhaust, but my son in law said it was supposed to come out in a stream,

good to have sites like this,

being an antique motor parts cost alot more,

 

[mselby]

Re: '68 McCullogh 7.5 cooling ?

Thanks a lot. It's good to know that the motor I just spent money on works properly. Maybe I'll try the suction pump, too.