Other is there any tricks to pressing out old cyl sleeves ?

yama-doo

yama-doo

X-
Location
Port Saint Lucie Florida
Do you guys have any tricks to pressing out old cylinder sleeves form a Yamaha cyl block or do you just stick it on your buddy's press and start cranking on it till it pops lose?

I have some good sleeves in a bad block what do ya'll use between the press and the sleeves so they don't get trashed?
 
Sparkplug

Sparkplug

Location
Red Bluff CA
Super easy. Set it on some bricks in the oven. Upside down. I go to 450. After like 10 minutes in there, tap the sleeves down and they will pop right out.
 
hydrostyler

hydrostyler

X-
Site Supporter
Location
Central Illinois
I took a short piece of lumber (2x8x2ft) in and sat it on the kitchen floor. Cook the cylinder for about 10 minutes on 450, grab it out of the oven with a set of welders gloves and carefully drop it on the board from a couple inches and the sleeves should pop loose.
 
yama-doo

yama-doo

X-
Location
Port Saint Lucie Florida
hydrostyler said:
I took a short piece of lumber (2x8x2ft) in and sat it on the kitchen floor. Cook the cylinder for about 10 minutes on 450, grab it out of the oven with a set of welders gloves and carefully drop it on the board from a couple inches and the sleeves should pop loose.
Click to expand...

a piece of wood on the kitchen floor sounds like a good idea so I don't have to carry it way out to the work bench , I am going to give it a try tomorrow
 
augustaf

augustaf

Location
central florida
If the sleeves are cracked, they may not be removable by heating the cylinder. Seems they "grow" and bind up. Boring or removing the cracked section may be needed.
 
yama-doo

yama-doo

X-
Location
Port Saint Lucie Florida
Update:
well I got all 6 sleeves out , it took me abut six trys per cylinder block but there out :) they would start good but only go about half way and get stuck so I had to keep reheating and trying again .The older rusted sleeve's where the hardest to get out . The one cracked (bad) sleeve ended up being the easiest it was swelled up and the base where the crack was I just used the hammer and folded it in just a little .
this is eh engine we are building for my son , here is going to sand blast some parts and wash everything in parts washer one day next week the well try freezing some sleeves and see if they go in the block any easier ...lol

Oh ya I decided to just carry them form the oven to the workbench because I had screwed together a bunch of 2x4's that I could sit the cyl block on and have room for the cylinder sleeves to come all the way out the bottom
 
yama-doo

yama-doo

X-
Location
Port Saint Lucie Florida
Surfjunkie,
The crank looked pretty good when he got the bottom end apart, but you wouldn't believe all the sand and trash we still got out of that top end so we decide to just use that other cyl block I had already figure that was safer. I'm thinking about using that old cylinder block to practice boring out on the mill if I can find a scrap 951 sleeve so I know if we can do a big bore build for him later, the block has the material to do it I just need the practice and see if I can match the ports
 
augustaf

augustaf

Location
central florida
When installing the sleeves into a heated block, please find a way (like a press or a block with a c clamp) to keep positive pressure on the sleeves til the cyl. cools. For some reason the sleeves try to sneak upward a bit otherwise.
 
You must log in or register to reply here.
Top Bottom