piston removal

[billyberoux]

how the F#$% do i get the wristpin clip off without a special tool?

&$^$%(&^%&%&~!!!

 

[Little-Boo]

Move the clip with a small screw driver by pushing the one end of the clip until you can get it just past the notch on the wrist pin hole (about a 1/4 inch or so. Use the same screw driver and pry it up grab it with some needle nose pliers pull it out and don't loose it

Carlos

 

[Bocephus05]

Yep.I use a small flathead screwdriver to roll it around to the slot.Then just pry up on it a bit and catch it with some small needle nose pliers.I have a small pair that I grinded the tips down on to make grtting ahold of them easier.If you do it enough times,a small screwdriver is all you need.Gotta hold your mouth right.

 

[billyberoux]

thanks guys! I also found another way that someone posted online. you need a socket, nut , bolt and 2 washers to make your own press. the socket should be smaller than the ID of the wrist pin.
1) Put the socket against the wrist pin on one side with washer on outside end of socket
2) put the bolt through the washer, socket and wrist pin
3)put the washer (bigger than OD of wrist pin hole) and then nut on the threaded end of the bolt
4) gently tighten the nut to pull the socket/wrist pin through and it will press the clip out

I haven't tried it yet but I will let you know how it works. Sounds like a like a lot less chance of knicking my piston up and/or catching a wristpin clip in the eye or losing it.

 

[Five Five]

sounds like you got it figured out .... whats up with your motor ???

:2thumbs:
"Five"

 

[billyberoux]

Yep! That should work. To make a short story long I'm repairing/replacing my cases. I stripped a cylinder stud thread in my crank case and my local dealer told me to use a helicoil to fix it. That didnt hold and it left a huge hole when I pulled it out and also weakened the metal. So then I tried an oversize timesert (shoulda used that first from what people are telling me now) but by then the intial hole was too big and the tap that comes with the kit didn't leave enough thread to hold so it pulled out too. Now I'm debating on whether to just replace my cases ($1800) or have the one hole drilled out from the inside of the case, welded/filled back in and then tapped again ($400). I'm waiting to hear back from S&S on the proper tap size and welding rod alloy so if I go that route it doesn't fail again in 1000 miles. Half the people I talk to say to weld it and the other half tell me the heat would F up the case and possibly crack around the weld sometime down the line..... Do you know any aluminum welders with an opinion?

 

[Five Five]

Yep! That should work. To make a short story long I'm repairing/replacing my cases. I stripped a cylinder stud thread in my crank case and my local dealer told me to use a helicoil to fix it. That didnt hold and it left a huge hole when I pulled it out and also weakened the metal. So then I tried an oversize timesert (shoulda used that first from what people are telling me now) but by then the intial hole was too big and the tap that comes with the kit didn't leave enough thread to hold so it pulled out too. Now I'm debating on whether to just replace my cases ($1800) or have the one hole drilled out from the inside of the case, welded/filled back in and then tapped again ($400). I'm waiting to hear back from S&S on the proper tap size and welding rod alloy so if I go that route it doesn't fail again in 1000 miles. Half the people I talk to say to weld it and the other half tell me the heat would F up the case and possibly crack around the weld sometime down the line..... Do you know any aluminum welders with an opinion?

Crap that is a tough one ... them cylinder studs retain the explosion and pressure of each stroke, so your repair has to be solid....Contact John Sachs on our website, he is my go to guy on motors .... if it can be fixed his shop can do it :2thumbs: can you go with an oversize / oversize insert ?
lots of repair inserts in the aircraft industry .... If not have someone CNC machine a custom insert for you...

:2thumbs:
"Five"

 

[john sachs]

thanks guys! I also found another way that someone posted online. you need a socket, nut , bolt and 2 washers to make your own press. the socket should be smaller than the ID of the wrist pin.
1) Put the socket against the wrist pin on one side with washer on outside end of socket
2) put the bolt through the washer, socket and wrist pin
3)put the washer (bigger than OD of wrist pin hole) and then nut on the threaded end of the bolt
4) gently tighten the nut to pull the socket/wrist pin through and it will press the clip out

I haven't tried it yet but I will let you know how it works. Sounds like a like a lot less chance of knicking my piston up and/or catching a wristpin clip in the eye or losing it.

Sounds like a good way to RUIN a set of pistons.:bang:
John

 

[john sachs]

Yep! That should work. To make a short story long I'm repairing/replacing my cases. I stripped a cylinder stud thread in my crank case and my local dealer told me to use a helicoil to fix it. That didnt hold and it left a huge hole when I pulled it out and also weakened the metal. So then I tried an oversize timesert (shoulda used that first from what people are telling me now) but by then the intial hole was too big and the tap that comes with the kit didn't leave enough thread to hold so it pulled out too. Now I'm debating on whether to just replace my cases ($1800) or have the one hole drilled out from the inside of the case, welded/filled back in and then tapped again ($400). I'm waiting to hear back from S&S on the proper tap size and welding rod alloy so if I go that route it doesn't fail again in 1000 miles. Half the people I talk to say to weld it and the other half tell me the heat would F up the case and possibly crack around the weld sometime down the line..... Do you know any aluminum welders with an opinion?

If the hole is still straight and round,and not so big that it's near the spigot(Case bore), you can get a machine shop to make an oversized insert.Post a picture,and I'll try to give you my opinion.
John

 

[billyberoux]

If the hole is still straight and round,and not so big that it's near the spigot(Case bore), you can get a machine shop to make an oversized insert.Post a picture,and I'll try to give you my opinion.
John

it ain't so small and it's not too straight. i have a machinist/welder here in sd that's going to look at it...thanks!