3.937" is not a problem, let us know how many pairs you would like.

 

anyone notice Wiseco is offering a 4 in 88 stroke piston for a 100 c.i. square engine? just found it on the website.

http://www.wiseco.com/ProductSearch.aspx

 

No problems with the 3.932" bore to establish 98" in the 88", or 107" in the 96".
Scott

 

Do you have to bore the cases to get them to fit?

 

No, the cylinders are stock so the outside diameter of the spigot dosen't change .

 

I didn't reference the right thread, I wanted to know about going to 4" bore. I am pretty sure that you have to bore the cases for that to work.

 

i bought used 98" pistons and jugs from colonel sanders after he blew the crank. installed with same rings!

i beat heck out of it for another 12-13000 miles, including numerous trips to the strip, several hundred dyno pulls, 4 long trips , etc: then i blew my crank. i would put em on another motor right now and bet they still wouldnt use oil.

does that tell ya how durable and reliable the bore size is? this question pops up alot, folks scared the walls get too thin, but i can tell ya, dont worry.

curious about going 4" bore, why can you do it now, but not last year? whos gonna be the first guinnea pig? whats your take scott? being a wiseco dealer?

 

Seems to me those cylinders don't like cranks....I wouldn't use them again if I where you Dennis.
I agree with Springer, the cylinders being that thin move too much with piston drag loosing cylinder seal.
Doc

 

A 4" bore requires boring the case and new cylinders. They are not intended for the stock cylinders.

As for the 3.937" 98/107 in a stock cylinder, we prefer not to do it but will at the customers request.

 

I saw something interesting at a local machine shop here last fall, it was an old flyer from Wiseco with a 4 inch piston kit and a press in sleeve for the twincam, wonder if anyone actually ever did this. It also made mention of the case bore.

 

I heard you can bore them out until the rings catch on the cylinder fins lol.

 

In 2000, Ron Dickey, Axtell Sales, GAVE us, one the first set of 4" Axtell cylinders.
We GAVE them to our client, but the case had to be bored.
I know next to nothing of the Wiseco kit, but with a 4" bore, the cylinder spigot would be non-existant. The liners has to be larger, requiring case boring.
Scott

 

thanks scott, looks like someone misread the application. 2000 huh? man, yall were quick to get on the hot rod scene with the twin cam!!

 

That's pretty cool... to learn something...

So, my S&S cylinders for 3.927 bore have a large liner, and then the liner itself is turned down on the OUTSIDE to fit the spigot holes. IS this larger liner mass there to fight against this, you think?

 

Yes, the S&S is a .010" smaller piston, good deal actually because it makes room for over bore.
Here is half of a stock cylinder and an image of an S&S cylinder to show the difference in sleeve diameters. One difference is the manufacturing processes, the factory uses a cerated sleeve and a pressure mold which binds the aluminum to the sleeve so are less apt to move under constant heating and cooling. I believe the S&S to be a gravity mold with a different bonding system as is Axtell's. Time will tell how these sleeves act. I have been boring stock cylinders to 98" and 107" for over two years wih no issues.

 

If Axtell and (dare I say) Revolution Performance have unlined cylinders (the all-aluminum coated cylinders) does it really matter if the liner gets really thin?

as long as it is thick enough to exert enough pressure against the aluminum casing holding it....

has anyone ever seen a liner fail from being bored too far? how big was the bore?

 

Yes...there have been several 110'' motors that the lining came loose and moved up and down with the piston to the point the liner cut the head gaskets.

 

I bored a one out to 4 1/4 inches once.. Don't plan on running a piston in it tho.. Bruce

 

Hey Bruce you ever get your 15 bucks back ??

 

Scott,do your torque plates have a step in them when you bore to 107?

 

have seen several set so the off set bored cylinders in factory sizes. They are nothing that we would bore. As for risk factor well crossing the side walk can hurt you some days !!!

 

or petting a mule. ROFLMAO.

 

"I am passin' out lollipops and a$$kickins and guess what? I am all outta lollipops"
cant we just all get along?

 

geesh, i guess i need to be more active again. yall even sux at fighting.

:beer:

 

For once it's not me bein' offensive!!! I have been debating the 98 or 107 upgrade. I have a pretty good 95 and think the 98 wont give me that much more...but 107 seems REAL sweet.

 

Petting a mule your really are a coonazz !!! happy holidays to you and the family Clay

 

LOL, festus, :redrolf:

mother, having been there, the oversquare is a different critter, it always wants more. toss plenty of head, cam , air at it and make sure you have a GREAT exhaust and tuner!

 

Thanks Clay and merry Christmas! I really like the spoolin the 4" stroke

 

The great thing about this is that the stock cylinders are readily available, so if one gets messed up, they will be easy to replace one as well as a set of rings. There are many such builds around that have 50k and more on them. For a street build, these should be ok. If you want a high comp race built, now that would make this a different story.