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rotorwrench · 01-14-2021, 12:09 PM

Many of the early King pin reamers were of a set size with slots cut in them to allow the flutes to only be expanded a small amount. They had a threaded adjuster inside with a tapered cone to force the flutes to expand. Most Ford king pins were 0.8125" so plenty of reamers were manufactured for just that size and they are generally set up for align reaming two bushings at once.

The best reamers are ones that are made for specific sizes and the ones that give the best finish generally have spiral shaped flutes with a very slight taper along the length of the flutes. I generally purchase reamers for specific sizes when I use them for soft metal bushings.

Expandable reamers with loose reamer blades are only as good as the quality with which they were manufactured. Most are not very accurate and leave too many chatter marks even when the operator is careful to expand them incrementally. They are only really usable when accuracy of cut is not that critical.

01-14-2021, 12:09 PM	#10
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,440	Re: Reamers Many of the early King pin reamers were of a set size with slots cut in them to allow the flutes to only be expanded a small amount. They had a threaded adjuster inside with a tapered cone to force the flutes to expand. Most Ford king pins were 0.8125" so plenty of reamers were manufactured for just that size and they are generally set up for align reaming two bushings at once. The best reamers are ones that are made for specific sizes and the ones that give the best finish generally have spiral shaped flutes with a very slight taper along the length of the flutes. I generally purchase reamers for specific sizes when I use them for soft metal bushings. Expandable reamers with loose reamer blades are only as good as the quality with which they were manufactured. Most are not very accurate and leave too many chatter marks even when the operator is careful to expand them incrementally. They are only really usable when accuracy of cut is not that critical.