Dumbo The Flying Elephant

Larry Hill · 03-01-2022, 09:15 AM

Got my new CB663 XXX bearings today but my new micrometer won’t be here until Wednesday. Odds should be in my favor that I get some good bearings.

Glenn Briglio · 03-01-2022, 01:46 PM

Quote:

Originally Posted by Larry Hill

Got my new CB663 XXX bearings today but my new micrometer won’t be here until Wednesday. Odds should be in my favor that I get some good bearings.

Larry try the King CR807XPN bearings. Very consistent thickness. Better than clevite's.

pmrphil · 03-01-2022, 06:57 PM

Quote:

Originally Posted by Glenn Briglio

Larry try the King CR807XPN bearings. Very consistent thickness. Better than clevite's.

And I'll add that I see less "delamination" with the King over the Clevite when they've been pounded.

Larry Hill · 03-02-2022, 09:41 AM

I think I have King's in the pink car. What ever is in there its goin on its third season.

Larry Hill · 03-03-2022, 02:24 PM

I received a new set of CB663xxx and they are good enough to install in a rod and check for clearance. Each shell got checked six places along the part lines for thickness variance and recorded in the Dumbo book

pmrphil · 03-03-2022, 07:24 PM

What did you see for differences?

Larry Hill · 03-04-2022, 08:54 AM

Out of the 96 places checked .0588” to .0595”, so thick to thin was .0007 and no shell had a variation of more than .0004.
Now they will be installed in the rods and checked for vertical clearance and taper. If all of that is ok Dumbo will have a fresh set of bearings.

Hats off to the real engine builders that have to fight this kind of stuff on a daily basis.

03-01-2022, 09:15 AM	#1
Larry Hill Live Reporter Join Date: Oct 2004 Location: Hickory, Ky Posts: 10,631 Likes: 1,925 Liked 10,683 Times in 2,223 Posts	Re: Dumbo The Flying Elephant Got my new CB663 XXX bearings today but my new micrometer won’t be here until Wednesday. Odds should be in my favor that I get some good bearings. __________________ IHM Used Parts https://ihmusedparts.com 888-821-1817

03-02-2022, 09:41 AM	#4
Larry Hill Live Reporter Join Date: Oct 2004 Location: Hickory, Ky Posts: 10,631 Likes: 1,925 Liked 10,683 Times in 2,223 Posts	Re: Dumbo The Flying Elephant I think I have King's in the pink car. What ever is in there its goin on its third season. __________________ IHM Used Parts https://ihmusedparts.com 888-821-1817

03-03-2022, 02:24 PM	#5
Larry Hill Live Reporter Join Date: Oct 2004 Location: Hickory, Ky Posts: 10,631 Likes: 1,925 Liked 10,683 Times in 2,223 Posts	Re: Dumbo The Flying Elephant I received a new set of CB663xxx and they are good enough to install in a rod and check for clearance. Each shell got checked six places along the part lines for thickness variance and recorded in the Dumbo book __________________ IHM Used Parts https://ihmusedparts.com 888-821-1817

03-03-2022, 07:24 PM	#6
pmrphil Member Join Date: Aug 2010 Location: CT Posts: 456 Likes: 1,796 Liked 346 Times in 150 Posts	Re: Dumbo The Flying Elephant What did you see for differences? __________________ Phil Molski PMR Performance S/C 1623

03-04-2022, 08:54 AM	#7
Larry Hill Live Reporter Join Date: Oct 2004 Location: Hickory, Ky Posts: 10,631 Likes: 1,925 Liked 10,683 Times in 2,223 Posts	Re: Dumbo The Flying Elephant Out of the 96 places checked .0588” to .0595”, so thick to thin was .0007 and no shell had a variation of more than .0004. Now they will be installed in the rods and checked for vertical clearance and taper. If all of that is ok Dumbo will have a fresh set of bearings. Hats off to the real engine builders that have to fight this kind of stuff on a daily basis. __________________ IHM Used Parts https://ihmusedparts.com 888-821-1817