Building Chevy 4.3 liter V6 - 1994 with balance shaft
(→MACHINE THE HEADS - VALVETRAIN) |
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The bearings are pressed into the block and have an oil hole each which needs to be aligned properly with the blocks delivery holes. | The bearings are pressed into the block and have an oil hole each which needs to be aligned properly with the blocks delivery holes. | ||
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| + | == 2016-OCT-27 - VALVETRAIN MODS == | ||
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| + | ''' ROCKER STUDS ''' | ||
| + | Pulled all the studs and my friendly machine shop had the bosses cut about 0.050" (1 mm) in order to get a nice flat starting point to cut 7/16" UNC threads. Later found out that with roller rockers I need to cut the bosses back an additional 1/4" to get the geometry right. | ||
| + | Found 16 TRW screw in studs and have machined the collars for guide plates off, then checked valve geometry with the intended rocker arm. | ||
| + | It will need more machining to match the correct geometry. | ||
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| + | At the same time found that I will have to machine an aluminium spacer for the OEM valve covers. It has to be about 20 mm (0.75") in order to clear the rocker arms inside of the original plastic valve covers. More stuff to do. | ||
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