I just bought this head, curious if anyone can help ID it. I was surprised there appears to be little to no porting done. The seller indicated the valve springs seemed quite stout, I will have to measure them.
Any guidance or recommendations would be appreciated.
0630 big valve head ID
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0630 big valve head ID
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Re: 0630 big valve head ID
Few more pics
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Re: 0630 big valve head ID
Apart from bigger valves that appear to be shrouded by the chamber walls, this looks like a stock unported 0331 head
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Re: 0630 big valve head ID
Ya that's not a 0630 head. It's a TUPY 0331 head and it doesn't look like it's modified in any way. Maybe slightly larger valves but likely stock valve seats, which would not be ideal.Cheromaniac wrote: ↑January 24th, 2024, 12:20 am Apart from bigger valves that appear to be shrouded by the chamber walls, this looks like a stock unported 0331 head
Recommendations will depend on what your goals are for the engine. First steps would be to measure the valves, check the valve seat contact width/concentricity, measure the springs for spring rate, install height and distance to coil bind.
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Re: 0630 big valve head ID
Thank you for the feedback. Not sure what I was thinking with the 0630.
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