old buicks Posted August 24, 2016 Share Posted August 24, 2016 How do I hold the split valve guides in the block to insert the pilot for grinding valves? We have new valves and guides but the guides are a loose fit in the block and will fall out. Is there a special insert that fits into the valve guide to align the pilot for grinding the seats? Link to comment Share on other sites More sharing options...
GK1918 Posted October 14, 2016 Share Posted October 14, 2016 (edited) Yes for 32 thru 53 valve guide pilot. They come up time to time on ebay. Or check with snap on ; Mine is snap on. Or find a pilot for your size guide, what these do is swell up the two piece guide so it doesn't fall out. Hard to ex plane but these are bigger than the valve stem but have split ends to swell when pushed in. sam Edited October 14, 2016 by GK1918 (see edit history) Link to comment Share on other sites More sharing options...
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