Goodson Gazette

Posts in the Tech Notes category



How to use a Dial Bore Gauge

Check out Goodson's video on how to use a Dial Bore Gauge. If you have any questions about how to this product or any other Goodson product please leave your comments below.

PRODUCT UPDATE : High Pressure Oil Gallery Cleaning System Expansion

When Goodson introduced the High Pressure Oil Gallery Cleaning System (HPOG) we knew we had something big. As soon as we started showing it at the Performance Racing Industry Show in December 2017 you, our customers, were asking about other applications. 

Goodson heard you! The High Performance Oil Gallery Cleaning System (HPOG) is not just for oil galleries anymore.  It's also for Lifter Bores, Cam Bearing Bores and Cylinder Bores.

Nylon Bristle HPOG BrushesWhen introduced, the HPOG included three stainless steel bristle brushes and the first question you asked was, "How about nylon brushes?" Today, the HPOG system features 16 nylon bristle brushes from .375" diameter all the way up to 5.0" diameter. These are in addition to the original stainless steel bristle brushes. Visit the product page to see the individual sizes.

Goodson recommends you use the brushes for the following applications:

 Brush Size Most Common Application
.375" to .875" Oil Galleries
1.00" to 1.125" Lifter Bores
2.00" to 3.50" Cam Bearing Bores
4.00" to 5.00" Cylinder Bores 

You, of course, are not limited to these applications. If a brush size fits an application, use it.

It's also important to note that the brushes from .375" to 1.125" have an 8-32 Thread and the brushes 2.00" and larger have a 1/4" pipe thread. Goodson offers thread adaptors for each. We also recommend using the 18" long wand with the larger brushes (2" diameter and larger) for better control.

To see how the HPOG works, check out the demo video. This video was made using the prototype unit. Watch for a new video coming soon.

PRODUCT UPDATE : 7mm Replacement Valves Now Available

When Goodson added the Kibblewhite products to our website, we were a little ahead of the manufacturing process and 7mm Replacement Valves were not yet available. Well, all that has changed!  We now have exact replacements for our old HBV valves in stock and ready to ship.

Frequently Asked Questions

Q: Why did Goodson switch to Kibblewhite Hard Parts?

A: Goodson and Kibblewhite have created a strategic partnership to provide our customers with the finest V-Twin Hard Parts available. Kibblewhite Hard Parts are made in America and are in stock when you need them. 

Updated replacement valve catalog pageQ: What other V-Twin Hard Parts do you offer?

​A: Just as Goodson has done over the years, we continue to offer Valve Seals & Installation Tools, Valve Seat Inserts, Valve Guides and Drivers, Replacement Valves, Valve Spring Kits and Compression Release Valves. These are all available for a variety of applications including the Milwaukee Eight™. View or Download the Updated Catalog Pages showing our full selection.

Q: How does your pricing work? 

A: Due to the agreement we have with Kibblewhite, the prices you see in the 2018 catalog and on our website are Manufacturer's Suggest Retail Pricing (MSRP). This is NOT the price you will be charged. As a loyal Goodson customer, you will be charged the Jobber price which is about 30% lower than what is published. When ordering online, be sure to log in to your account to automatically receive this pricing. Be sure to download the price list showing the MSRP and your Jobber prices.

Q: Why don't all of your products have a Kibblewhite to AV&V cross-over number? 

A: The only items that have cross-over numbers are those that are exact matches. Be sure to check the item specifications to see a non-matching item will work for your application. 


The Anatomy of a Valve Seat Cutter Blade

Valve Seat Cutter Blade DiagramEvery multi-angle Valve Seat Cutter Blade has two essential measurements and three essential angles. Top Width, Seat Width, Main Angle, Top Angle and Throat Angle. Of course, as the blades become more complex there will be additional angles, measurements, radii ... you name it.

We don't have the room to cover all of the theory behind the angles and how they create air flow in this article, but you can find some great stuff out on the internet if you search. Keep in mind, though, that not everyone knows what they're talking about. Get your information from a reliable source.

Valve SeatValve Seat Cutter Blade Terms

Top Angle: usually 30°, this is the angle on the combustion side of the seat angle 

Seat Angle: usually 45°, this is the angle at which the seat and the valve face mate to produce a gas-tight seal

Throat Angle: generally 60°, this is the bottom angle which transitions airflow from the seat angle to the port.

These terms correspond to the parts of the seat and valve too.

The 2018 Goodson catalog lists 117 stock Valve Seat Cutter Blades (see pages 6 to 9). You'd think that would just about cover it, but we have requests for custom cutters almost every day. Find out more about ordering Custom Valve Seat Cutter blades on our Custom Cutter Page.

At Goodson you'll find several blade categories:

  • Mondello Signature Series Cutter Blades
  • Radius Profile Cutter Blades
  • 3-D Three-Angle Cutter Blades (30º and 45º Seat Angles)
  • Single Angle Cutter Blades
  • Black Smoke Series Cutters for High Performance Diesel Engines
  • Micro Cutter Blades and Mini Cutter Blades

We're going to take a short look at each one of these so keep on reading. But, before we do, here's a couple of quick tips.

  1. Cutters with straight, precise angles with no blending between the angles are generally used for intake
  2. Cutters with radius profiles or blended angles are generally used for exhaust

Sampling of Mondello Signature Series Valve Seat Cutter BladesMondello Signature Series Cutter Blades

These Valve Seat Cutter Blades were designed for Goodson by industry legend, Joe Mondello. They are designed to increase airflow by as much as 20 CFM. When they were designed Joe intended them for specific applications but we've found over time that sometimes what is labeled as an intake cutter is just what you need for your exhaust set-up. 

Experiment to find the right blade to produce the flow and horsepower you need. Check out the full assortment here. If you need some help choosing the right blade, be sure to call the Goodson Techxperts™.

Radius Profile Seat Cutter Blades

These cutter blades sport some interesting shapes, radii and angles to give you lot of options for increasing air flow in your valve seats. A lot of research, development and experimentation has gone into these profiles to duplicate the angles found in aftermarket heads. Each head manufacturer has a development team that has put together a set of specs for each of its offerings and you need cutters that will maintain those specs or you could lose flow and power. 

Goodson offers a variety of Radius Profile Cutter Blades for High Performance, Light Duty Diesels, Harley-Davidson, etc.

Page 8 of the 2018 Goodson Catalog3-D Three-Angle Seat Cutter Blades

These are basic cutters that have been developed over the years to work on stock heads. As we said before, every manufacturer has their own specifications and these cutters have been designed to fit those specs. Generally you will find these with either a 45º or 30º Seat Angle but that's where the similarities end. From here, you have a range of throat angles, seat widths and top widths to choose from. View the complete selection of Valve Seat Cutter Blades.

Single Angle Valve Seat Cutter Blades

As the name implies, these seat cutter blades have a single angle instead of multiple angles and radii. Goodson stocks cutters with angles from 15º to 94º. These cutters give you the option of customizing a single angle on a seat.

Black Smoke Series Seat Cutter BladesDiesel Valve Seat Cutter Blades

Goodson actually offers a couple of types of Seat Cutter Blades for Diesel applications. First are the standard 3-angle cutters, with a few variations and tweaks of course. Next are the Black Smoke Series Cutters for High Performance Diesel Engines. 

The Black Smoke Series Cutters were developed for Goodson by Joe Mondello Racing Engines for specific applications (see illustration at left). 

Diesel Relief Tool Working PhotoTo go along with these cutters, Mondello Racing Engines developed a Diesel Relief Tool that will increase high lift air flow, increase torque and increase horsepower in high performance diesel engines. For more information, check out the how to video at the bottom of the product page.

Last, but not least, we come to the 

Micro & Mini Valve Seat Cutter Blades

As the name implies, they are small size cutter blades. The Micro Cutters were developed to work with Goodson's 3-D Fast Cut Micro-Ball Head Tooling and are available in several profiles. Mini Cutters are designed to fit the Mini Cutter Holders Goodson introduced to fit Sunnen® and Mira® ball heads for brazed cutters. 

As always, if you have additional questions, feel free to contact the Goodson Techxperts by email or phone (1-800-533-8010).

Setting Your Expanding Pilot

  1. Setting Your Expanding PilotSelect an expanding pilot that is the same diameter as the valve guide ID.
  2. Insert the pilot into the valve guide, making sure the expanding section of the pilot (collet) is completely within the valve guide. The pilot will not center properly and may be damaged if the collet extends outside of the valve guide.
  3. Pilot shoulder should be about 1/8" above the valve guide.
  4. Turn the pilot while holding the nut at the opposite end. This will expand the collet and secure the pilot into position.

NOTE: DO NOT use Expanding Pilots with multi-angle valve seat cutting systems such as 3-D Fast Cut.

Pilots, Pilots and More Pilots

What do 380 pilots have in common?

Drum roll please

Not one of them can fly! 

Okay, we'll admit; that was a BAD JOKE.

Today in Tech Notes, we're talking about the pilots you use day in and day out in your machine shop.

Why? Because without a quality pilot that's on size and the right one for the job, your finished product will be sub-par.

Most of you have looked at the Goodson catalog or the Goodson website. You've noticed there are pages of pilots. Three full pages of pilots. Plus other specialty pilots on other pages. Yup, we counted 'em. There are 380 pilots stocked by Goodson listed in the catalog and on the website. 

So how do you know which pilot to use for which job? Keep reading to find out.

Solid Tapered High Speed Steel Pilots

These are your every day pilots. Goodson offers them in 4 top sizes — .297", .375", .385" and .437". A few other top sizes (.390" and .406") have been made in the past, but there is little demand for them anymore. 

.297" Top Solid Tapered High Speed Ssteel Pilot

.375" Top Solid Tapered High Speed Steel Pilots

.385" Top Solid Tapered High Speed Steel Pilot

.437" Top Solid Tapered High Speed Steel Pilots

All of these pilots are designed to remain stationary in the guide bore, allowing the tooling to turn around it. Goodson recommends these pilots for valve guide and valve seat work. 

Explanation of extended length pilots with diagramSolid tapered high speed steel pilots are also available in an Extended Length version. These were designed for deep-set valves such as those in diesel applications. Sometimes the seats are set so deeply that the standard pilot doesn't extend beyond the deck far enough to support your tooling.

Solid Tapered Carbide Pilots

A step up from High Speed Steel Pilots, these carbide pilots have less deflection under stress. They are available in two top sizes — .236" and .375". As with the high speed steel pilots, these are used primarily with guide and seat work.

.236" Top Solid Tapered Carbide Pilot

.375" Top Solid Tapered Carbide Pilots

Expanding Pilots

Another popular pilot variation is the Expanding Pilot. Every expanding pilot is good for a range of guide sizes. For instance our 5.5mm, .375" Top Expanding Pilot will fit guides in a range from .213" to .233". With standard pilots, you would need several individual pilots to cover the same range of sizes as a single expanding pilot.

BUT don't use expanding pilots with multi-angle valve seat cutting systems such as the Goodson 3-D Fast Cut. They will deflect too much and not yield a good finish.

Every expanding pilot has three parts — the body, the collet and the expander. All pieces are included when you purchase the pilot (at least they are when you purchase from Goodson) but replacements are available.

Expanding pilot parts

Be sure to check out our tech tip on Setting Expanding Pilots.

Straight Carbide Pilots

The last type of pilot we're going to talk about here is the .375" Top Serdi-Style Straight Carbide Pilot

.375" Top Serdi-Style Straight Carbide Pilot

These pilots are also known as live pilots which means they turn with tooling. They are available in  42 different stem sizes, from 3.99mm to 9.52mm. 

A Few Last Words

  1. Take care of your pilots. 
    You have a substantial investment in these tools and they need to last. Be sure that you are keeping them clean and properly stored to prevent damage. Always clean your pilots when you are done with a job so they're ready when you need them next.
  2. Remember pilots wear out - and pilot tops wear more than bottoms.
    A good habit to get into is to mic your pilots before using them to be sure they are on-size and concentric. You don't want to complete a job only to find out that your pilot was out of round so all of your hard work is down the drain.
  3. Use the right pilot for the job.
    Goodson carries a lot of pilots for a reason. If you're not sure which pilot to use, call a Goodson Techxpert to get some advice. 

Engine Professional Thread Repair Update

The January-March 2018 issue of Engine Professional Magazine from AERA included an excellent article about Thread Repair. If you haven't read it, take some time to do so. You can find it on their website or follow this link

Goodson to the rescue in Engine Professional MagazineThe article includes a section on the Full-Torque spark plug thread repair system, specifically referencing P/N FT-514LTK. Unfortunately, Goodson doesn't carry this product any longer, but it is still available directly from Full-Torque.

It's always great to be mentioned in an Engine Professional but we want you to be able to find the parts you're looking for so head on over to Full Torque and tell 'em Goodson sent you.


Brake Lathe Chatter

Anyone who works on a brake lathe has experienced chatter. It comes with the territory. Today in Tech Notes, we’re going to look at what causes chatter and how to control it.

First, let’s define chatter. According to the Merriam-Webster dictionary, chatter is a verb that means: 

“to vibrate rapidly in cutting, a chattering tool
“to vibrate especially audibly as a consequence of repeated sticking and slipping, chattering brakes”

Check Out Goodson's New HPOG-1000

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