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bigger bore pistons in a 88

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High Octane

11-13-2007 16:02:41




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how much can a stock 88 sleeve be bored to run safely? can they go 4 inch bore and bo OK? What about a 77 too? I have 3 77's and a 88, thinking of making a few plow day specials out of em. Stock stroke, just a bigger bore. Thanks! Cant decide which one to put back together,, a 77, or a Super 77 or a 88. Which One fellas??




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High Octane

11-15-2007 19:10:33




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 Re: bigger bore pistons in a 88 in reply to High Octane, 11-13-2007 16:02:41  
Gonna do 2 tractors,, the Super 77 and the 88. Ill do the S77 first, since it is torn down the most, and looks really good. The 88 needs an axle, from rim rotted calcium. But the rest looks good,,, clutch and flywheel are not good in the 88, a squirrel used it for a nest and rusted the pressure plate down to dust. crank is fine. will a 77 bellhousing, flywheel and clutch work on a 88 in a 88 frame? The Super 77 was bought for the rims, bout 15 years ago, When Alfords Implement in Laketon, Indiana sold out, it was sitting along the fence under the trees upclose to the large shed. Hood and grille was gone, no front pedistal, but the engine wasnt stuck, and it had good rear rims! I had taken it all apart, down to the bare castings, greased the engine parts and put em on the shelves inside. The frame sat out back, Got 2 other 77's one has disk brakes, and its all together, and the other 77 has a really good transmission. Thinking of putting 88 pistons in the Super 77,,, same compression height, might wake it up a little,,,, the oring I measured to be .090 thick at 3-3/4 bore. Originaly 3.5 bore sleeve. The 88 is 3-3/4.

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High Octane

11-15-2007 18:42:24




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 Re: bigger bore pistons in a 88 in reply to rrlund, 11-13-2007 16:02:41  

?? said: (quoted from post at 17:18:50 11/15/07) What are those 4" pistons out of??


STD bore WD Allis



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High Octane

11-15-2007 05:46:24




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 Re: bigger bore pistons in a 88 in reply to J. Schwiebert., 11-13-2007 16:02:41  

stroker 88 said: (quoted from post at 19:33:17 11/14/07) some of the original sleeves were thinned down in the water area. i bore my sleeves in the block. if someone were to bore them without removing them , they might get a big surprise.


Last night, I bored a 3.5 bore 77 sleeve to 3-3/4! Would not go beyond that,, but its a mini replica of a 88 sleeve,, good practice..... A few weeks ago, we bought a Boring bar table,, its designed to bore wet or dry sleeves by setting the sleeve up in a clamping table. It took me a while to get it center and straight, but once i got it good, it took me almost 3 hours to go from 3.5 to 3-3/4 with the 77 sleeve. I found a set of 4 inch bore pistons that have the 2-5/16 compression height, with a smaller wrist pin than the 88,, flat tops, Nothin fancy, figuerd it to be at 9to1 compression. What about a head gasket??? 310 gasket??

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??

11-15-2007 16:18:50




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 Re: bigger bore pistons in a 88 in reply to High Octane, 11-15-2007 05:46:24  
What are those 4" pistons out of??



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High Octane

11-14-2007 06:26:33




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 Re: bigger bore pistons in a 88 in reply to High Octane, 11-13-2007 16:02:41  
The 88 had flat top 3-3/4 bore pistons, the 77's well, 2 of em were the same, and the Super had bigger pistons in it. I thought of making a light 88,,, with a 77 chassis with the 88 sheet metal and the 88 engine. Makes it easier to transport ya know,,,,,
.060 at the O ring,,,, 4 inch bore,,, well, Ill think of going up to 4 inch bore, something with a higher compression ratio, just a bit bigger cubic inch. A few weeks ago, I bought a boring bar/ table,,,, it bores sleeves, and I have this 88,,, got it in 3 years ago,,, a barn find,,,, stuck, but in good restorable condition,, tires were rotted of it from calcium, but the hood and side curtains were there,, the clutch housing got a squirels nest in it,, the peeed all over the clutch and pressure plate and litterlly rotted the pressure plate and clutch.. I think the crank is fine, it would be too bad if it is not,,, its a 10/10 crank!! So I got to "Cut' the clutch off it. will a 77 flywheel interchange? I got 3 of them,
80-85 hp with a stock crank is what Im after,,, out of the 88,, Im sandblasting the cyl head and getting it done up soon, or upgrade to the newer cyl heads,,, but, what do I look for??? 12 port cyl head/manifold, or do some really good work to the stock 88 head?
Alot of work to go plowing isnt it??? LOL!
How bout some pictures of your 88's and 77's Workhorses, pullers, or rusty ones sitting in a fence row!! Also,, the color scheme,,, the super 77 had white paint on it instead of yellow, on the grille and the front of the tub,,, is it just yellow faded out or were they really white? Had red rims and hubs,,

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stroker 88

11-13-2007 18:07:36




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 Re: bigger bore pistons in a 88 in reply to High Octane, 11-13-2007 16:02:41  
on the 88, if they are stock 3 1/2" bore they won't go to 4". if they are 3 3/4" bore or larger they will make 4". make sure you are on center, cause the o-ring grooves will only be .060" away. on the 77 the 3 5/8" or larger will go to 3 3/4". this has been my experience with these. but the best way to add inches is stroke it!



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Tramway Guy

11-14-2007 11:46:11




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 Re: bigger bore pistons in a 88 in reply to stroker 88, 11-13-2007 18:07:36  
I have an 88 that originally had 3-1/2" bore, the sleeves had the same O.D. as the Super 88 that had 3-3/4" bore. 3-7/8" bore sleeves are available, I'm pretty sure.
Then main difference (besides the original bore diameter) between the 88 and Super 88 is the rod journal diameter.



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stroker 88

11-14-2007 18:33:17




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 Re: bigger bore pistons in a 88 in reply to Tramway Guy, 11-14-2007 11:46:11  
some of the original sleeves were thinned down in the water area. i bore my sleeves in the block. if someone were to bore them without removing them , they might get a big surprise.



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super99

11-13-2007 17:12:06




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 Re: bigger bore pistons in a 88 in reply to High Octane, 11-13-2007 16:02:41  
I have to admit to being partial to the super's, and the super77 is a great tractor, but my vote goes to the 88. Chris



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