Thread: Valvolean
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Old 05-16-2016, 07:07 AM
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LoBelly LoBelly is offline
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Location: Melbourne, VIC
Cobra Make, Engine: RMC, carb 347 TopLoader and Jag running gear ~ so old school I time it with an hour-glass :D
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So the next question became "What to do with the heads?"

I looked for a local head specialist (not really expecting to find one) but discovered ...



Who - in their Historic Cars Section cite another of the my Vic team-mates who was very helpful on the day Trevor Simkin. Small world - Trevor also did the dyno run in on my engine, so I ring Trevor who tells me that the owner Eddie Woods is a top guy and does fantastic work - great

this is Trevor doing the run in on the engine in November 2007.


A couple of days later I drop the heads at HSD. The factory has a great feel and they've a mix of old and new stuff about the place.

Picture is a bit blurry but you get the idea...


While I'm there Eddie looks over the heads and says the head snapping off the valve is often indicative of valve bounce (I'm paraphrasing).

I also send Eddie the photos and he also thinks the rockers are a bit high and the push-rods might be to short. But also notes that the wipe area on the valves looks fine - speculates that there may have been some interference with the valve and stresses the importance of the rocker in the middle of its range at mid lift.

I get a quote for the head work and - what seems a short while later - get the heads back (came in $300 under quote )



Looks like new

HSD have cleaned everything up nicely


And done a little port work for me ...'just to tidy things up - they'll now flow better'




While I was picking up the heads Eddie made me a push-rod measurer to loan and also provided a light spring so I could check the push-rod length



Last edited by LoBelly; 05-16-2016 at 07:28 AM.. Reason: behind you
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