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354898 SPECs

A

Anonymous-0

Well-known Member
Kind of late to be askin'this but I will be cuttin' on the 251069 block (bottom web) this afternoon or tomorrow A.M., for those that haven't been keepin' up with this journey, to install the 3 1/4" sleeve in the holes where 3" sleeves once resided. I have Mic.ed the sleeves, the holes in the 354898 block are hard to get to to get a good measurement, so does anybody know the diameter Farmall meant the holes to be? OR....since I have the sleeve in hand what diameter would You cut the hole compared to the size of the sleeve.... .001 larger...same as the sleeve ..... .001 smaller or what . What do You recommend?
Thanks,
Wild Bill
 
If you are putting the O ring in it I would use the .001" clearance. this allows reasonable assurance of a tight compression of the ring.
If you are leaving the ring out (a crapshoot in my opinion) theinterference fit is almost mandatory to prevent massive leaking. Varianbility within the production of the sleeves might also require individual fitting of each to a hole. Where as if O ringed the variance would be of less concern. JimN
 
A good engine machine shop will have the equipment and information resources to do the job properlly. Sometimes its better to hire a proffesonal rather than risking ruining the block yourself.
 
Very true. In this case he is a machinest and has connections to the needed measuring technology and tooling. Only the luck of the draw with a casting core off center might cause issues. JimN
 
How thick are the 3 1/4 sleeves at the bottom?? like i said before take a little off the area of the sleeve where is goes into the bottom counter bore and a little out of the block and allow for a .001 interference fit and press the sleeves into the block BUT one must make sure that when doing this that you have proper sleeve STAND OUT at the top and that the upper counter bores are dead on or you will have head gskt problems in the end. Ya need to do a lot of figuren before ya push the start button . I can not see why you can not get your mic.'s down in there to get good reading . Either with a telescoping mic. or and inside mic.or a bore gauge . Myself i like to rate a job on how may 12 packs it would take to do it and this one would be around three . from start to finish . Now if my one buddy still had his machine shop this whole deal on his stationary boring bar would only take about and hour and a half . As to what the books say i can't tell ya as all mine are out at the farm.
 
JimN, At this point in time It is My intention to cut the grove to install the sealin' ring, I'll know by the first one if this is doable. By the way,did You know that grove is cut square on the backside, not round as I expected from lookin' at the seal?

T VeT....I'm okay with this one, Have failed on easier ones, succeed on harder ones, Some You win,.....Finishin' this one I'll open the Makers Mark
Maybe This would be an easy to get to place to measure for some, Ive got Most of the older measurein' devices Known, big hinderance for Me is arm size and They ain't fat
Got to go to a funeral this afternoon, will lose a little time from this project

Thanks for the answers,

Wild Bill
 
The tractor puller out east said he didnt have to do anything to the o-ring bore when he put the 3 1/4 sleeves in his block. His machine shop mite have turned the sleeves down a little also. I have never done this trick but know of people who have. Some cut the sleeves some also. Your are only going 125 thous larger than the 3 1/8 sleeve so you only have to remove 62 thous material thats only 1/6 inch shouldnt be that hard to do. 30 thous off the sleeve and 30 larger in the hole wont make the o-ring that much differenct. Using good soapy stuff the rubber o-ring shouldnt be a big deal. WILD BILLS going to have a HOT ROD GO BILL GO.
 
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