310 wauksesha diesel

bison

Well-known Member
I need some advice here folks.
I'm rebuilding a 310.
I had the valve seats ground after i replaced the guides.
When i was lapping the exhaust valves i saw that the seats are not what i thought they should look like.
The seat width on the narrow spot(there is no meat left underneath that spot as the exhaust bore slants away at that point) is only 0.0375"...this is on all exaust valves that way.
Have a look and tell me what you think

mvphoto14835.jpg


mvphoto14836.jpg


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mvphoto14839.jpg
 
Does or did you have inserts installed in the head. You need to have the valve sit 041 for the exhaust valves above the deck and 029 for the intake valve. Do they?
 
All intake and exh valve faces are at least 0.055 [b:20854d0449]below[/b:20854d0449] the deck.
And no there are no seat inserts installed.

Having seats installed cost prob more than i care to shell out.
I have already way more money in this engine than i figured on spending.
ground the crank, reconditioned camshaft and new brgs, new piston and sleeve kit, complete valve kit, reconditioned rods with new pin bushings, oilpump shaft and brgs.etc
And i still need new injectors.

To top it off, i just found out that the moron i bought this tractor(1855) from had ripped the engine out without first pulling the PTO shaft.
The 3 speed and shaft is still in the tractor, shaft is bend and won't come out,..just lovely! :roll:
 
How can I contact you? I know you are in Canada. Check with people on here that put the seats in. Where you are at dimension wise those seats and getting the correct protrusion will make a huge difference. J.
 
J Swiebert, my email is open, if you want to call, my number is 780-322-2800. I am 800 ml north of the border in Alberta.
I have a local engine machine shop that does my engine machine work,He did this valve grind too. He can and does bore for and put inserts in also.
I wish he had told me the seats where actually worn beyond regrind and needed inserts instead of just grinding them and call it a day.
 
I'm trying to tell by the pictures, but is the
surface that the valve contacts not a consistent
width all the way around?

What it looks like is he tried to do some odd
porting job and removed a substantial amount of
material that's supporting the seat. If that's
what he did, I hope he didn't get too close to a
water jacket.
 
They did not do a porting job.
There was not much material there to support the seat to start with and it became less when the seat sunk deeper with the valves wearing in and/or subsequent grind jobs.
Me thinks inserts is the smart option
better pics here.

mvphoto14853.jpg


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Those pictures help a lot. It's been a few years
since I looked at one of those heads.

That seat margin is way way too thin. Without any
material there, it's going to get hot and
eventually torch. I'm amazed the shop you took
this to even thought that was acceptable. It
seems to me the best next step is to find a
different shop and maybe one that has familiarity
with those heads.
 
(quoted from post at 22:20:01 01/10/15) Those pictures help a lot. It's been a few years
since I looked at one of those heads.

[b:4e20239c98]That seat margin is way way too thin[/b:4e20239c98]. [b:4e20239c98]Without any
material there, it's going to get hot and
eventually torch[/b:4e20239c98]. I'm amazed the shop you took
this to even thought that was acceptable. It
seems to me the best next step is to find a
different shop and maybe one that has familiarity
with those heads.
That is what i am/was afraid of.
The owner of this shop is very good,he has done jobs for me for almost 30 years.
He had a few unfamiliar faces running around(new hires), one of them is prob not that experienced and may have done that job.
I will talk to them on monday.
 
Since you are that fare in I would suggest that
you have the balance checked as well. We did a
1955 a few years back and it was suggested to
us to do the same. These tractors were built
when White was more interested in sucking money
out of the company than doing things right.
after what we found I believe one of the
problems with the bottom end in these was very
poor balancing. We found that ours was over 5
times over the min spec in the book. We had the
entire rotating group balanced and you can't
feel the engine running when your in the seat.
 
(quoted from post at 14:36:34 01/11/15) Since you are that fare in I would suggest that
you have the balance checked as well. We did a
1955 a few years back and it was suggested to
us to do the same. These tractors were built
when White was more interested in sucking money
out of the company than doing things right.
after what we found I believe one of the
problems with the bottom end in these was very
poor balancing. We found that ours was over 5
times over the min spec in the book. We had the
entire rotating group balanced and you can't
feel the engine running when your in the seat.
hanks for the concern but there's nobody within 300 ml of me to do a rotating balance.
I have the rods and piston assemblies matched to within 5 grams of each other. they were 17 grams apart before,..so it's got to run smoother now.
 
They gonna install seat inserts tomorrow, $30 a piece minus the grind job.
The shop owner was not to happy with the guy that did the original grind job.
 
The spec I gave you for the valve protrusion is the maximum. The least is 0.015 less (Intake 14-29, Exhaust 26-41) It will make a difference starting. Still did not see a e-mail on your profile. J.
 
(quoted from post at 06:53:46 01/14/15) The spec I gave you for the valve protrusion is the maximum. The least is 0.015 less (Intake 14-29, Exhaust 26-41) It will make a difference starting. Still did not see a e-mail on your profile. J.
Schiebert thanks for the info, i'll pass it on.

I don't know what to do about my email, i just noticed it is out dated but i can't get the site to accept a new one.??
 
I took the head down to the machine shop this morning to get the valve inserts installed.
The shop owner looked at it and said there ain't any metal where the porting undercuts the valve seat to carry an insert .
He figured the only option was to widen the existing seat to have the valve contact a little further out and shave the head to get valve face to 0.015 under the deck.
He is confident i wont have any problems with valve/seat burn or leaking
Shaving the head is $60 and the seat grind is free.
I told him to go ahead as advised.
 

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