Re: 37 Packard 115C Valve Train

Posted by Owen_Dyneto On 2015/8/15 14:11:06

Unfortunate that you began drilling the guides, it will leave less "meat" for the driver to bear on when pounding them down and out. Probably best now that you make a modified driver with a pilot to match the new bore diameter. The more or less standard "K-D" driver pictured(2nd from left, with broken pilot) along with some others I've used over the years. The "step" on the driver has to be large enough to get a full contact on the edge of the guide yet obviously small enough to fit thru the guide bore as you drive it downwards. You'll want a heavy hammer, perhaps about 4#.

I've done far more valve jobs on Packard in-line engines than I care to recount; if you've not been through it before I suggest you try to find someone who has to guide you thru the process.

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