Fast Fred's OMC Mod 50 secrets Thread #2

[formeone]

sure luv the looks of that front case,,,, any production thoughts?????

[Tim Kurcz]

Yep, an FE on a 350 would be a white knuckle ride! I can appreciate you not wanting to do that again. 2" tuck - was that a D-Merc case? I run the 45SS case 1/8" under and hit 100 with ease, but have no desire to go any faster.

This is not a project for the begininer - complicated machine, welding, and fitting work. Because of that it's somewhat expensive. So, I don't plan production, but will consider making one or two more if there's demand.

[Powerabout]

Tim
How about the bell mouths on the carbs are they CNC'd or by hand?
Do you make them for sale?

PS What reed blocks were in there?

[Tim Kurcz]

Powerabout & all,

Indeed, I do make the "bell mouths" seen on my engines - CNC. They smooth out transitions and improve flow, and fit any OMC 1-1/2" throat 1bbl. $55 each includes screws. There are 18 available in stock.

The reed cages are my secret.

[Powerabout]

Tim
How about if the carb has an air jet at the front top ( rather than a fuel jet) like many of them, has that been allowed for?
Is that the notch I can see on the outer?

Regards

[Tim Kurcz]

Hi Powerabout,

The relief you see is the 10 O'clock vent. I will cut 12 O'clock reliefs for no additional $$$.

Tim

[Fast Fred]

hey Tim Kurcz, my exhaust pushed out at the base gasket, any tricks there to get them sealed up nice?
thanks
FF

[Tim Kurcz]

You betcha, Fred.

That joint is always a problem because the exhaust housing is machined separately from the block and tolerances don't always stack correctly.

The solution is to coat both sides of the gasket with Loctite Gel-Seal (OMC), otherwise known as 518 (industrial) or Master Gasket (consumer). This is an anaerobic sealant that cures through .015". Just be sure to let the joint cure for 24 hours before running the engine.

This method will seal any engine gasket forever (upside). Be aware the gasket forms a laminate structure, will be destroyed upon disassembly and is more difficult to remove than a failed plain gasket (minor downside).

BTW; I worked for Loctite for 26 years and was their engine/powertrain guru for race teams throughout the world. Our (unauthorized) catch phrase was; "Use Loctite or kiss your nuts goodbye".........

Tim

[Fast Fred]

i gots to go and fix some boats, thanks

[formeone]

question,,, has anyone else had problems with the crank wabbling/bending,,,,, at the top,,, me bin haveing and have had problems that way alot,,, maybe better balance or????....