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STAGE 2: - Full port and polish, port-matching the intake runners, D-shaping/re-angling of exhaust ports, significant bowl work, correcting the short side radius, polished cc-matched combustion chambers
Race Valve Job (9-angle Intake, radiused Exhaust)
CC-matched combustion chambers
stainless steel swirl-polished under-cut valves in OEM diameter
Comp Cams valve springs (128lbs at install height), Comp Cams retainers, and Comp Cams keepers
bronze valve guide liners
new Viton valve seals
assembled and toleranced
clearanced for safe lifts up to .560"
milling up to .020 free of charge
From a customer standpoint, we would be curious to know if all of the above was performed as stated by MMS on the heads in your possession.
I'm currently running a set of MMS stage 2 heads on one of my vehicles. Should I be concerned that a portion of each valve guide was machined away? Have you ever tried that before? What is the advantage? In the very last picture from the list above it looks like the guide may have slightly shifted in its bore at some point after being machined? Could this procedure cause durability issues?
Thanks for posting the data and pictures!
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 0 hp / 0 tq
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Linear Mode
