I bought a Hemi - Project Lit'lphant

[oldeskewltoy]

oldeskewltoy Wrote:on the intake side...

I've not yet mentioned the exhaust side...  This has to do with a few possible options open to me.



As you can see, the exhaust side exhaust valve could be larger(original is 34mm).... the seat is even large enough to accommodate a bigger valve. 





A bigger valve is EASILY available, the Toyota 2/3TC engines use a nearly identical exhaust valve(length, stem, keeper groove) except the diameter is 36mm!






And if you look back to the castings, the exhaust port appears to be able to support a larger valve.....





So... that pretty much leads me to where I am right now...  Getting the flowbench prepared to run the hemi heads. 





The thought is to test the current valve and see if we are above/below a flow ratio of 65% of the intake flow is the exhaust flow.  Above 65%, leave it alone, run a 34mm valve, with a fresh valve job.  Below 65%, and have the valve seat machined to accept the 36mm valve.



To run the head, I need another one off tool....   a "new" valve actuator... a friend will need to weld that nut(plus another) to the metal bar





more to come........