I Just Acquired A Clements Engine

[CarlsonMotorsports]

R4 shouldn't need welded.
If you are using dual springs, you shouldn't need lifter bores welded, although most builders will anyway.
With big lift cams and the correct springs, you shouldn't be floating springs anyway. Bad things happen when you float springs on a limited or open mod.



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

 

[Badrooster]

Which lobe has huge duration? Intake or Exhaust

Approx. #'s.......400" Intake.......240" Exhaust. Both around .630" BC. Have y'all ever seen such a thing?

 

[flattop1]

What does .630 bc mean ?

 

[MO Predator Racer]

What does .630 bc mean ?

I don't know a bunch about cams but doesn't that mean bottom center. When the piston is at its lowest point?

 

[Badrooster]

Base Circle. I'm shocked.

 

[flattop1]

BDC should be 180* . IE: Bottom Dead Center .
Ha ha let go of the wire .

 

[Badrooster]

Be should be 180* .
Ha ha let go of the wire .

Be should be what?

 

[Badrooster]

Y'all thinking about how to respond to NOT knowing what BC means, when talking about Cam Lifts?

 

[flattop1]

Be should be what?

BDC is what it should say . Ill correct the error .

 

[flattop1]

What is EXP?

Sound familiar ?

 

[Badrooster]

Can anyone answer the question of why the large difference in Lifts?

 

[flattop1]

Its a flathead engine . Cylinder filling is more important then the exhaust cycle .
Getting air in is much harder then getting air out .

 

[Badrooster]

This Engine has no Head Gasket. Could that be correct?

 

[CarlsonMotorsports]

This Engine has no Head Gasket. Could that be correct?

Does it have an O-ring machined in the deck or head?
Good luck sealing it without some sort of gasket -- adhesive will not cut it.

 

[Badrooster]

Does it have an O-ring machined in the deck or head?
Good luck sealing it without some sort of gasket -- adhesive will not cut it.

No O-Ring grooves. I wonder how thick of a Gasket that I should order? .010"-.020"?

 

[Badrooster]

If I added clay to the Valve Pockets in the Head, how much clearance should I have?

 

[racerx427]

Weird, that it has that Screw on top of the Sump Cover. Screws into nothing.

Nobody builds a engine like that and not stroke it.

 

[Skidude]

If I added clay to the Valve Pockets in the Head, how much clearance should I have?

.030 minimum between the valves and head, same for piston.

 

[CarlsonMotorsports]

^ .030" would be minimum for sure. I aim for .035" but honestly .050" won't hurt you and allows for a little valve float. Piston to head clearance is determined by piston pop-up, cylinder head machining, and head gasket thickness. Being that you have no head gasket currently, the sky's the limit on how much you want to "squeeze" it. More compression will make more power; but at the expense of more heat, more pressure, and more parts failures. It's a trade-off that you'll have to make a decision on.

 

[Badrooster]

The Head "Ceiling", if you will......the Intake is cut in the area of .120" deeper than the Exhaust. Pretty cool. Have y'all seen this type of Head?