adjustable tappet adjusting

[JimH]

I just got my 8N engine block back from hot-tanking and my machinist added a little alteration. He said that the wrenches that you buy for adjusting tappets have a tendency to break, so he drilled a small hole in the housing that holds the tappet. He said I will be able to stick a pin punch in the hole to keep the slotted adjustable tappets from turning so I can use any open end wrench to adjust. He did this prior to the hot-tanking so"s there wouldn"t be any metal shavings in the block. He said it works like a charm and has been doing it for years. Seemed like a good idea to me so I just wanted to pass it along to the rest of you because I"ve never read of it being done on this forum, (which is not to say I didn"t miss it).

 

[Brian Bell]

my local parts guy told me his shop does the same thing for the same reason.

 

[Tom N MS]

Mine has the holes, I use the wrenches...

 

[Dunk]

The valve tools have worked great for me, twice in 20+ years.

I hope those drilled holes don't leave no burs (on the inside) to cause problems.

 

[Dunk]

Oh, yeah, both times, I borrowed my valve tools from the local tractor place, they must use them too.

I bet it was the same 20+ year old set.

 

[ZANE]

Now what is your resoning for using the tappet holding tools when the block is already drilled to be able to hold the tappets much better with a drill or punch etc.???????????????

Zane

 

[Dunk]

(quoted from post at 21:36:24 04/01/08) Now what is your resoning for using the tappet holding tools when the block is already drilled to be able to hold the tappets much better with a drill or punch etc.???????????????

Zane

My reasoning is that if anyone had drilled them holes in my block, they would have been sued for well more than the worth of the tractor, unless we had agreed on that before hand.

I know what the old term for that was.

I know what the newer term for that is, Afro-engineering.

I don't know what the now, PC term for that is.

 

[Sean (TX)]

Worked for me...

 

[Dean]

Commonly done, Jim.

Either method works well.

Dean

 

[Tom N MS]

Just because that's the way it's suppose to be done and I have the holding tools and a flat ground wrench for that purpose..Now you want to know the real reason..I bought the holding wrenches. I didn't know about the holes..I saw them but figured that was oil return holes or something...Now I know..Don't plan to mess with them anymore unless I just HAVE to..I hate to touch manifold bolts and for me to mess with the springs and tappets and such the manifold will come off out of the way..

 

[Hobo,NC]

Wept,,, I drill every one i come across,,, even if the engine is together,,, cast drills like butter,,, no burs left,,, sorta turns to powder

A very nice upgrade,,, machine shop man done good

I do like the hole low as I can git it in the block,,, Sean's izz to high for my like'n,,, makes it harder to hold the lifter,,, angle of the dangle thang,,, wink wink

 

[Dunk]

It's just adultery to me.

I bet there are purists that do it.

That don't make it right for me, I won't jump out of no perfectly good airplane behind none of yall, I won't even git in the dayum thang to start with, I am fine right here on the ground.

Mine works, just the way it came...

With the tools made for it.

I did braze the oil pickup tube, to the part it hooks to.

I'm not always right, but neither is no one else, I am entitled to have my opinion. (well, ain't I?)

The tools work fine for me.

Did yall make sure to clean up all of them cast iron shavings really good, just a little bitty piece in the crank or rod journal could make a heck of a streak.

I have seen folks get onto me here for many things....

I have seen prominent folks here suggest farmierazitons from hell.

 

[budder]

what size hole and how much lower should the holes be drilled

 

[Sean (TX)]

I would say mine are about 3/16...I didnt put them there...Worked for me at that height...Hobo is usually right lower may be better...

 

[MR in MN]

I put a small bead of weld right at the thin elbow on the tappet wrench, and have never broken one since.

 

[OKDAD]

I'm with Dunk on this one. The '49 I am overhauling that "had never been apart" has these holes plus a few other internal mods. Never having worked on one of these before I assumed they were oiling holes. I have since found out differently. The engine is back together and I used the tappet wrenches(holders) to adjust the valves. Had zero problems.

Why farmerize when you don't have to? JMHO.

 

[Hobo,NC]

3/16 bit,,, keep it just off the lower gasket surface on the block,,, shoot a straight hole,,, Does not hurt a thang,,, those that have not done it will find the wrenches useless after some time,,, damm adjusters lock up, you break yer precious wranch

When the block is disassembled is the time to drill,,, if you are not familiar with the different lifter types don't mess with dilling a assembled engine

 

[jim(SE-Mich)]

Dunk;
Your attitude shows you are nothing unique.
Just like everyone else.
We all are quite the same with small differences that don't make much difference in anything.