Classic Mini cylinder head porting secrets! How to improve gas flow through your cylinder head.

[@philtucker1224]

Really interesting and demonstrates the importance of allow equivalent breadth around the valve guide and stem so as not to be an obstacle to volumetric efficiency. At Piper Cams in the 1970s we also had a mini “port wind tunnel” (that gave us accurate VE readings using mercury vacuum tubes) so we could compare good and bad mod options and tune camshaft profiles to suit. Many thanks!

[@TurboMinicom]

Thanks Phil. Sounds like you’ve been involved in some interesting things in the past.

[@danmorris8069]

Great videos and great timing - been self isolating the last two days re-reading Vizard and watching his old lectures on gas flowing to do my MPI head - new straight grinder on order!

[@TurboMinicom]

Thanks for your positive comment, much appreciated. Hope you’re finding the videos useful & good luck with your head work.

[@Ala_mak]

Bro you are like messi😮

[@paulhotson5820]

So would you not touch the floor at all?

[@TurboMinicom]

Hi Paul. Remove the minimal amount of material required to just give the floor a good clean up, that’s all that’s required.

[@andredesousa96]

@@TurboMinicomwhat are your thoughts on filling up with epoxy the areas where there’s flow? Like the floor

[@TurboMinicom]

@@andredesousa96 it can produce good results as it allows you to form a better short side radius & improve velocity in the main body of the port.

[@Johns51]

I would fill it with epoxy for sure in fact will be doing a 1275 head this year for my pick up. My approach will be fill the floor with epoxy and get it raised early in the port, nice tidy blend at the bowls good seat job and a really rough surface finish.

[@TurboMinicom]

@@Johns51 yes, it works nicely!

[@Johns51]

Fill the floor then and sort the bowls

[@TurboMinicom]

Sound advice.

[@TurboMinicom]

Are you enjoying these short videos or do you prefer full length features? Let me know.

[@GPZ_Biker]

As a teaser, this was great. The 'opito?' tube was a real school day moment. Thanks. A full video or series on this would be great

[@TurboMinicom]

@@GPZ_Biker yes the pitot tube is a very useful tool.

[@GPZ_Biker]

@@TurboMinicom got to love a Schoolday