Grinding 8N Valves

[John P.]

Is anyone aware of a kit that has the proper tools to grind the 8N valve seats in the block?
I'm not sure what I need to do the job.

 

[wore out]

Is anyone aware of a kit that has the proper tools to grind the 8N valve seats in the block?
I'm not sure what I need to do the job.

Here's how it was done years ago. I got these tools as part of a seat grinding set I got from an old garage auction years ago. From time to time stuff like this shows up on ebay.

 

[John P.]

Wow, nothing you can pickup at the corner auto parts store.

 

[wore out]

Wow, nothing you can pickup at the corner auto parts store.

A new valve guide and a 7/16" expanding pilot are the next best thing.

 

[Tim PloughNman Daley RIP]

Is anyone aware of a kit that has the proper tools to grind the 8N valve seats in the block?
I'm not sure what I need to do the job.

A big job and you need specialty tools. Start by investing in the ESSENTIAL MANUALS. The Chapters in them are your friends.


Your Mileage May Vary,
Tim Daley (MI)

 

[John P.]

I’ve had all the manuals for the past 20 years.
Now I need the grinding tools for the job.

 

[John P.]

A new valve guide and a 7/16" expanding pilot are the next best thing.

I see a lot on the Neway website, but don’t know which tools to order.

 

[Hobo,NC]

I’ve had all the manuals for the past 20 years.
Now I need the grinding tools for the job.

TOH posted the part numbers for the carbide cutters, best I remember they were in the $200 range. He may loan them out for a small fee.

 

[John P.]

TOH posted the part numbers for the carbide cutters, best I remember they were in the $200 range. He may loan them out for a small fee.

I found this post, but I can’t find the part numbers:

Valves seats 8n

Finally got all my stuck valves out! I kinda roughed up some of the springs and guides. So I think I should buy all new. Would the seats be 30 intake and 45 exhaust angles? I'm not sure what the book means when they say 90 included angle.

forums.yesterdaystractors.com

 

[Btzj02]

I see a lot on the Neway website, but don’t know which tools to order.

Call Neway and talk to the Ford 8N tractor expert. I bought a cutter from them a few years ago and I have used it on the 8N and my 960. The guy recommended two cutter guides with the cutter. I believe one guide was for new engine spec and the second guide was slightly bigger to be used if the valve guide was worn. After cutting the seats each valve and seat needs to be honed the old fashioned way. The cutter has two sides to it which I believe were 30 and 45 degrees. The 45 degree cutter is for all the seating surfaces and the 30 degree cutter is used to clean up the edges of the seat.

 

[John P.]

Call Neway and talk to the Ford 8N tractor expert. I bought a cutter from them a few years ago and I have used it on the 8N and my 960. The guy recommended two cutter guides with the cutter. I believe one guide was for new engine spec and the second guide was slightly bigger to be used if the valve guide was worn. After cutting the seats each valve and seat needs to be honed the old fashioned way. The cutter has two sides to it which I believe were 30 and 45 degrees. The 45 degree cutter is for all the seating surfaces and the 30 degree cutter is used to clean up the edges of the seat.

Neway wants the valve diameters and angle.
So, I think they are looking for 45 degrees on both seats and intake valve diameter of 1.50" and exhaust valve diameter of 1.28"

 

[John Deere D]

Call Neway and talk to the Ford 8N tractor expert. I bought a cutter from them a few years ago and I have used it on the 8N and my 960. The guy recommended two cutter guides with the cutter. I believe one guide was for new engine spec and the second guide was slightly bigger to be used if the valve guide was worn. After cutting the seats each valve and seat needs to be honed the old fashioned way. The cutter has two sides to it which I believe were 30 and 45 degrees. The 45 degree cutter is for all the seating surfaces and the 30 degree cutter is used to clean up the edges of the seat.

I purchased everything from Neway, to cut new Valve Seats on my W9 Head....... . 100% satisfied with their tools.

 

[John P.]

So, it looks like I will need a CU268 cutter, a CU626 cutter, and a TW503 handle.
Still need to figure out what I will need for pilots.

 

[Btzj02]

Is anyone aware of a kit that has the proper tools to grind the 8N valve seats in the block?
I'm not sure what I need to do the job.

Cutter 232. The cutting teeth are adjustable for valve seat diameter. cut both an 8N and 960 valve seats with this cutter. These are the two pilots I have that were recommended by Neway. I honestly don't remember which pilot I used on which tractor but I had no problems with either engine.

 

[John P.]

I finally got around to calling Neway.
They are sending me what they call their complete kit for the N series tractors.
I'll post a photo when it arrives.

 

[Lynn Patrick]

Several years ago I got tired of today's "replace" instead of "repair" style of rebuilding & found an old valve grinding machine ($150), then purchased a Neway seat grinding set (about $50). I learned how to grind valves many years ago from an old Allis dealer who was willing to teach then let do! I figure my first 2 head refurbishings more than paid for everything, besides the satisfaction of doing it myself!

 

[lha]

Is anyone aware of a kit that has the proper tools to grind the 8N valve seats in the block?
I'm not sure what I need to do the job.

I have an old[30s-40s] valve grinder/surfacer that has two piece guides and cutters for both sizes of valves. It is set up like an eggbeater and allows for rotation and advancing lapping. I bought the kit at a flea market for $5.00 several years ago.

 

[TheOldHokie]

I finally got around to calling Neway.
They are sending me what they call their complete kit for the N series tractors.
I'll post a photo when it arrives.

I have a Neway set I put together myself that I made availanle for rent a couple years ago For gpod coverage on the L-head you need three mandrels and two cutters.

Dan

 

[JJay48]

Waiting to see the tools when you get them. I might want to get some for the future.

I am surprised no one said to leave it to a professional yet.

I had watched a video of someone grinding flathead v8 valves and they had a pilot that also went down into the lifter hole to hold it steady.

 

[TheOldHokie]

Waiting to see the tools when you get them. I might want to get some for the future.

I am surprised no one said to leave it to a professional yet.

I had watched a video of someone grinding flathead v8 valves and they had a pilot that also went down into the lifter hole to hold it steady.

Thats exactly what you get in the Neway kits and the job can be done in frame if needed, This one is headed out to a member who read this thread and just rented it. It has 30, 45, and 60 degree cutter heads and 4 different size pilots to accomodate new and worn guides. If you are going this far you really should put in new guides.

Any reasonably accomplished gear head can do the job. I suggest purchasing a tube of Prussian blue to check fit on the valves after cutting them. If done correctly no lappng will be required.

TOH