What size engine for the online/Youtube EC?

frosty_the_punk said
Cylinder head porting.
It may be worth while to clarify whether material can be added to the ports/combustion chambers.

IMO, he wasn’t fully clear on porting. Though that’s a price paid to the piper entrance fee for those that do not know how to port a head. Ether purchased in such a form or sent out for the treatment. The earlier rules did make it clear earlier on welding or epoxy which was a “no” unless it was to fix an over zealous porting. I forget what chamber mods were OK or none at all.
IMO, it would only make sense to allow a “Clean up” of the chamber for better flow as some heads will shroud the valve as cast. I don’t think a reworking of the chamber is OK since it’s not a novice move.

frosty_the_punk said
If I understand correctly the spirit of this competition would likely prohibit welding/tubing/putty etc to raise the port floor or minimize the pinch. (However if people are willing to do that I personally would be very interested)

I don’t think you do understand. If it’s for fun and with the idea that a copy can easily be done at home by the beginner, do you really think there going to go the full monte on a head and intake modification?

frosty_the_punk said
Intake manifold.
A single carb flange of 4150 is specified, but It isn't specified whether the intake manifold needs to be based on a mass produced item.

It stated (IIRC) readily available currently made or available.
If it’s mass produced, then it’s easy to get.

frosty_the_punk said
(Once again, It is unlikely that anyone would enter with a fabricated intake manifold, but if someone is willing to do that I am personally interested to see the results)

Build, dyno and document it here anyway!

frosty_the_punk said
Oil control
If I'm understanding this correctly, something needs to specify that dry sump systems are prohibited as this is cost prohibitive to the average person and not on the spirit of a budget build.

I think that was spoken about earlier. No dry sumps. Wet systems/Oil pans only.