Flathead facts

[95 shaw]

Did you know?

That's the purpose of this thread.
I'll start with a little known fact from flathead lore.

If you spray starting fluid in the muffler of your flathead, it will aid starting.

Try it.

Bring on your flathead fact.

 

[Skidude]

If you put a 4hp head on a 5hp block it will hurt flow.

 

["J'-remy]

the gasket surface around the exhaust valve will droop because of the heat. always where they leak

 

[95 shaw]

Any air cooled engine is , in fact, a fuel cooled engine.

 

[CarlsonMotorsports]

Flatheads are still fun to build.

Customer just picked up this brand new one yesterday.


-----
Thanks and God bless,
Brian Carlson
Carlson Racing Engines
Vector Cutz
www.CarlsonMotorsports.com
Carlson Motorsports on Facebook
www.youtube.com
34 years of service to the karting industry ~ 1Cor 9:24
Linden, IN
765-339-4407
bcarlson@CarlsonMotorsports.com

 

[CarlsonMotorsports]

flathead fact: Those red Briggs shipping crates are STILL handy!

 

[Petree]

If you blow on the gas cap it will fill the short tube cup with fuel.

 

[OVALTECH1]

the exhaust port is already too big so if your plans are to build it up just leave that diameter alone.

 

[Mac_49]

Flathead > OHV

 

[Flatlives]

An exhaust reducer WITH a port matched header will aid in low end power.

 

[Chuck_Sloggett]

If he intake valve doesn't leave a witness mark on the head your spring pressure is too high. -- Chuck

 

[XXX#40]

Takes a special Allen wrench to get the carb bolts, better buy 2

 

[flattop1]

When it starts running bad all of a sudden.
Your valve hit the plug closing the gap.

 

[Jktwood]

WD40 will work as a starter fluid

 

[racing promotor]

You must replace the Diaphragm quite often . And to do so one must remove small screws that hold the cover over the diaphragm, those screws require a small flat head screw driver , Those same screws will thread right into the throttle cable adjustment block replacing the screw that requires the special size very small Allen head set screw to adjust the throttle linkage. Much more user friendly and a lot easier to find a small screw driver that that darn little Allen wrench .

 

[flattop1]

mag/flywheeh side 555149...99157
sidecover small crank 555150...99158
sidecover big crank 555050.....692007

 

[flattop1]

If you are not using a motor sports block any motor with 132232 will be a bearing engine.

 

[PKS]

The top of the valve spring chambers thickness varies depending on the mold the block was casted in, if you go to deep with the pocket the spring sometimes will wear thru the pocket even with an upper retainer installed. One other that I never did but have seen done a lot. On the old Rapture pistons if you compress it in on the wrist pin sides the skirts will get larger to take up piston to cylinder clearance for a last rebuild before boring the cylinder.

 

[Chipg56]

It seems, the better the carb, the more likely it will break.

 

[XXX#40]

It seems, the better the carb, the more likely it will break.

Best carb I ever had was a #2.