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Old 22-04-2019, 12:30 PM   #11
type3
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Bit of a bummer on the crack. Easily welded though.
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Old 22-04-2019, 08:58 PM   #12
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Yeh the welding is the easy part but welding that close to valve seat can create issues down the line.
If I was to weld it I would strip it a bare casting then grind out the crack heat the casting throughout and weld it up.
It would then probably require machining to allow the valve seats to be pressed in with the correct interference.

All stuff that can be done of course but not financially viable for this build or head with that value.


I'm sure I can find some, I know I have some Mexican 043s which are good but have the smaller valves so id prefer to use some 113s which I believe I have a good set

Thanks, Jay
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Old 01-05-2019, 09:57 PM   #13
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A little progress and finally I have some heads I can use
Found this pair of 311s which I sent off with some parts for vapour blasting, no cracks, spar plug threads all good and they cleaned up very nice

Also here is a pic of the crank all polished up
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Old 01-05-2019, 11:13 PM   #14
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Crankshaft
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Old 01-05-2019, 11:17 PM   #15
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Next job is to drill the crank for 8 dowel and then its ready to balance.

Then I can start to build up the bottom end although im still looking for some straight cut gears.

Thanks

Jay
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Old 14-05-2019, 01:08 PM   #16
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pretty much what |I did with the motor for pollys race car. totaly stock 1700 type 4 motor with a turbo and efi. it's now being rebuilt with a web cam and some stornger valve springs.
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