SST60 Specs

[Popa Sam]

Can anyone tell me what I can do to solve the over heating problem? Are the SST60 carbs the best single barrel carbs for these motors or is there a better carb?
Thanks Guys

The biggest improvement in the cooling was moving the tell-tale outlet to the top of the block rather than the side. It allowed steam a place to escape. Always use a 6 blade impeller rather than the 3 blade that is available. Cooling is one of the advantages of the permanent cast block. The sleeves have 360 degree support by aluminum which dissipates heat much better than having a void behind the boost port with the lost foam cast.

Any of the "no choke" carbs with a 1 1/2" opening and a 1 !/4" venturi work well. I've tested all the different versions of these carbs and never found a difference in performance with any of them.

Of course these are my opinions and I'm sure you know about opinions!!!

[Powerabout]

Sam
Have you ever tried the plastic top carbs from stock 70?
Cheers

[Popa Sam]

No. I never tried the plastic tops.

[Lil' Blue Rude]

I run flat top 50hp on my 45 cu OMC and I gained a mph on top over the older style non choke flap 50hp carbs. Don't know if the same would apply for a 3cylinder, or a prop. I run a outboard jets. Thanks for the info.
P.S. I'm always up for listening to opinions.

[calvin]

Is it better to run thermostats or rectrictor washers in the 3 cyl omcs?

[sheuninck]

the 49 ci thermostat is 120 degrees. cold to reduce salt water damage. put an automotive 180 degree one in it.

[Lil' Blue Rude]

This will sound like a dumb question but I'm gonna ask it any ways. What is the idea behind the SST60 having a sqaure exhaust tuner? Is it because of the limited space in the mid or is there somethin else behind the idea? I've always read that rounding of sharp edges and corner helps air flow so why wouldn't a round exaust tuner be a better choice?
Any help would be great.
Thanks

[Powerabout]

the adapter is square so the tuner is as well I guess?
For same basic area a square tuner has a lot more internal volume

[Fastjeff57]

The tuner is designed to add some resistance to the exhaust belching out, so it doesn't matter that square pipes flow less well.

Jeff

[Lil' Blue Rude]

Does it matter if the tuner is Sqaure or round? I'm trying to figure out if they are square because it's just easier to build them that way or if it is because of the limited sapce in the midsection forces the need for a sqaure exhaust to get the correct area for the tuner.
Like I said I know it's a dumb question.