Valve guide install

comnoz · Mar 5, 2013

Here is the spoiled way to install valve guides straight.

See the funny looking thing sticking up on my bench.

Under the bench is a hydraulic cylinder

It holds a valve guide like this

You fit a hot cylinder head over the stud and put the guide and retainer on the end of the stud and pump the lever two times and the new guide is pulled in strait toward the center of the seat.

It sure beats putting them in with a stud and cone puller [or a hammer].

Stephen Hill · Mar 5, 2013

What is the secret to avoid galling the bore in the head when you install the guide? We keep hearing about galled bores that let oil travel between the guide and the head. Milling away most of the material in the guide before removing it seems like a good precaution. Is there anything that can be done on the installation? Do you recommend coating the guide with a sealant or a lubricant before pushing or pulling it home?
Stephen Hill

comnoz · Mar 5, 2013

1. Break the edge of the new guide where the taper starts with a bit of sandpaper to keep it from gouging the aluminum as it is pulled in.

2. > http://www.goodson.com/GOODSON_Press_Fit_Lube_Aerosol < Is good or there are teflon based lubes that work well. Jim

Hobot · Mar 6, 2013

So satisfying to see how the inner workings are done and the clever lazy man tools to make it less worry or work.

The best there ever was for pressing tight fits smoothly w/o galling is good ole caster bean oil. Any remains sets like glue.

http://www.aptastandards.com/LinkClick. ... uage=en-US

http://www.sbrhs.org/mechanical.html
In mounting these parts little attention is paid to tonnage except that a maximum of 25 tons is mentioned. The fit allowance is carefully checked with micrometers and the proper amount of interference with .001 in. plus or minus is maintained. Castor oil and white lead are used as a lubricant on roller-bearing fits.

DogT · Mar 6, 2013

I thought everyone had one of those in his/her Norton garage.

Thanks Jim.

Dave
69S

comnoz · Mar 6, 2013

DogT said:
I thought everyone had one of those in his/her Norton garage.

Thanks Jim.

Dave
69S

Heh, If you ride one long enough you might. :wink:

swooshdave · Mar 6, 2013

comnoz said:
DogT said:

I thought everyone had one of those in his/her Norton garage.

Thanks Jim.

Dave
69S

Click to expand...

Heh, If you ride one long enough you might. :wink:

Putting me in a shop like that would be like handing a baby a razor blade.

comnoz · Mar 6, 2013

So not including the laptops there are 8 PCs and a server that keep all the stuff going. You can come in and keep them running anytime. Jim

bwolfie · Mar 6, 2013

I like the dentist light.

comnoz · Mar 6, 2013

bwolfie said:
I like the dentist light.

Actually it is a gynecologist light.

swooshdave · Mar 6, 2013

comnoz said:
bwolfie said:

I like the dentist light.

Click to expand...

Actually it is a gynecologist light.

That's a more interesting story. Still looks like a dentist light. :mrgreen:

comnoz · Mar 6, 2013

When I found the light at the local scrap yard it had the name of the clinic on it. It wasn't a dentist office. Jim

daveh · Mar 6, 2013

Jim, that is neat. I guess after doing so many heads, you wanted to make it easy for yourself. I like that the guide is pulled in rapidly, so there is less chance of it sticking in the bore as it heats up - and perhaps a better chance of getting it straight as a result?

Dave

comnoz · Mar 6, 2013

I used to pull the guides in using a cone that set in the seat and a long bolt that went through the center of the cone to pull the guide in. I used an air impact wrench on the nut. It worked ok that way but it was more difficult to handle and the puller bolt would only last a short time before it would loose its threads- usually with the guide halfway in place.

I have been using the hydraulic spindle to install guides for quite some time. I just hand-held it at first and then mounted it through a small work stand. Eventually I permanently mounted it to my cylinder head bench and had an electric pump with a foot control to power the cylinder. I did not like that as well as a hand pump because I couldn't feel the movement of the guide so I went back to just a hand pump. I had to buy a new pump last week because the old pump was worn out.

Pulling the guide in toward the center of the seat definitely helps with maintaining the alignment with the seat. It cuts down on how much material you end up removing when you cut the seat. Jim

kempoyner · Mar 11, 2013

Boy if that light could talk!

cmessenk · Mar 11, 2013

Thanks for sharing your experience and mastery of our beloved machines, Jim. For someone like me who's only an "expert" on the basics, I feel like an expert and confidently share your insights with other local Nortoneers after reading your posts.

Jeandr · Mar 18, 2013

Are you sure you are retired?

Jean

comnoz · Mar 18, 2013

Jeandr said:
Are you sure you are retired?

Jean

No, just tired.

pierodn · Apr 11, 2013

comnoz said:
Jeandr said:

Are you sure you are retired?

Jean

Click to expand...

No, just tired.

Dear Jim,

I have had from a friend a new set of standard valves guides he bought time ago from Andover and never used: How do I recognize what are the inlet or exhaust?
Thanks.
Ciao
Piero

pierodn
Posts: 329
Joined: Sat Nov 10, 2012 5:36 am
Location: Gaeta Italy

comnoz · Apr 11, 2013

Piero,
Intake guides will have the top machined with a groove cut for a seal.
Here the intake guide is on the right. Jim

Valve guide install

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