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Model Identification and bearing issues

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F2 Paul 876:
Hi here is the frame and engine numbers for F2's from the Honda parts book.
Hope it helps, looks like a F2 but if imported from the states it could be a F3 which was there version.
Paul

kaceyk2:
Bryanji, this may interest on the topic of worn out f2 valve guides....on taking my f2 head to the engineering shop (when I had an f2 ) and presenting him with the head and proudly handing him a band new set of phospher bronze guides, my joy was short lived. "you dont want those in there" he said. I asked why? he said that the phospher bronze ones are the same as they use in some honda cars (the Accord I think) and they dont last compared to the original sintered ones...when I explained that neither do the original ones in the f2 head..he looked at me like I was an alien and clutching the phospher ones and shaking them near my face said "these will last even less, but I will fit them if you insist"  I didnt insist and still have them!

Yoshi823:
I made some new valve guides out of aluminium-bronze, but not exact copies of the originals...I made my ones slightly longer where they protrude into the exhaust/inlet ports. This did not upset flow but did support the valve stem better. The material that I used was also better for dissipating the heat from the valve stem to the cylinder head far better.

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