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Goodson offers a lot of Flywheel Grinding Stones (50 of them at last count). So how do you choose which one to use? In this week's episode of Tech Lab Tuesday, Dave Monyhan (retired) explains the reasons behind the variety.
I sent a letter a couple of months ago, that stated in the event we could not supply a replacement diamond for your Hyper Finish Diamond Valve Guide Hone, that we would send you a complete mandrel for the same cost as the Diamond Abrasive. As you know we improved the manufacturing design of the Hyper Finish Diamond Sizing System and now call it the “Black Diamond” Sizing System.
At first I could not get the diamond abrasive to fully interchange with the newly designed and manufactured Black Diamond Series. Well, now the GREAT NEWS is that we have completed the diamond manufacturing and can confirm that we have diamond abrasive on the shelf and can service your existing diamond mandrels with replacement Diamond Abrasive in the event you do finally wear out the diamond abrasive.
Just call or email directly to Goodson and order your replacement diamond. (See chart.)
CNC electroplated diamond abrasive for the New Black Diamond Valve Guide Sizing System. Note, the new abrasive will fit old-style mandrels.
These Replacement Diamond Abrasives are sized to fit the HYPER-FINISH Valve Guide Sizing System
|
Mandrel Size |
Range |
Black Diamond |
|
5.0mm (BHFM-193C) |
.193" to .203" (4.90 to 5.10mm) |
BHFS-010 / HFS-193 |
|
5.5mm (BHFM-212C) |
.212" to .232" (5.40 to 5.90mm) |
BHFS-020 / HFS-212 |
|
6.0mm (BHFM-232C) |
.232" to .253" (5.90 to 6.40mm) |
BHFS-020 / HFS-232 |
|
6.5mm (BHFM-251C) |
.251" to .271" (6.40 to 6.90mm) |
BHFS-020 / HFS-251 |
|
7.0mm (BHFM-271C) |
.271" to .311" (6.90 to 6.00mm) |
BHFS-040 / HFS-271 |
|
.312" (BHFM-307C) |
.311" to .350" (7.90 to 8.90mm) |
BHFS-050 / HFS-307 |
|
.343" (BHFM-344C) |
.334" to .374" (8.50 to 9.50mm) |
BHFS-050 / HFS-343 |
|
.375" (BHFM-350C) |
.350" to .389" (8.90 to 9.90mm) |
BHFS-050 / HFS-350 |
We thank you for your continued support on this very accurate and long life tool for sizing valve guides and look forward to earning your business each and every day.
Sincerely,
David P. Monyhan, National Sales Manager
Before you can grind a flywheel, you need to remove all of the dowel pins. In this week's episode of Tech Lab Tuesday, Dave Monyhan shows you how to use the Goodson Dowel Pin Puller to do just that. He even shares a "hack" for removing super-stubborn dowel pins.
You might also want to read Getting a Grip on Dowel Pin Pullers
As multi-valve engines continue to be built, valve sizes are getting smaller and smaller. Most valve refacers have a 1/2" chuck. So how do you mount a valve stem that's as small as 4mm? Find out how in this episode of Tech Lab Tuesday.
We get asked a lot, "Why do you have so many Valve Refacer Wheels?" In this episode of Tech Lab Tuesday, Dave Monyhan (retired) explains the reasons behind our large assortment. He also discusses grinding oil and diamonds and their importance in a proper valve job.
Products used in this video include: GV-280, GV-281, GV-282, GV-282A, GV-280-CB, VGO-10, VGO-SD10, VGA-T32 & Dressing Diamond. All available in our Valve Refacing Product Collection.
Remember, if you have questions about this or any other machine procedure, talk to a Goodson Techxpert™ at 1-800-533-8010 or drop us an email. We're here to help!
If you have any other questions about this or any other Goodson product, be sure to contact us by phone (1-800-533-8010) or drop an email to our Tech Services Department.