Budget Big Bore 4mm Stroker

[Matt_E]

The die grinder....was it angled? How long were the shanks?

I ask because I have some trouble with a Dremel and right angle attachment to get consistent angles.

It looks like you did an awesome job. :biggthumpup:
Did you widen the transfer tunnels before putting the sleeves in?
(Did you do any port work prior to sleeve instal?)

 

[robertg]

The die grinder....was it angled? How long were the shanks?

I ask because I have some trouble with a Dremel and right angle attachment to get consistent angles.

It looks like you did an awesome job. :biggthumpup:
Did you widen the transfer tunnels before putting the sleeves in?
(Did you do any port work prior to sleeve instal?)

I didn't have to modify the tops of the transfers because they lined up with the sleeves perfectly. If I had to do it again I would widen the transfer tunnels before I pressed in the sleeves. I have a couple of shanks for my die grinder that are about six inches long. I actually put them in a cordless drill at low speed to modify the tunnels. I could control the drill a lot better than the die grinder. It took a lot of time.

 

[Matt_E]

Nice project. You've given me ideas.

I have a 61X cylinder with busted sleeves, but the transfer port roofs have been messed with.
I may need to look for an unmolested stocker.

 

[Dutchie]

Is your engine done ? How does it go ?

Greetings

 

[Lumpy]

This thread is 6 years old

 

[robertg]

Is your engine done ? How does it go ?

Greetings

It went good, however I sold it five years ago.

 

[Dutchie]

haha my bad! i liked the threas so much that i did not look at the date. Sorry for that.

While were at it

Dit it end up being a freestyle cylinder or surf ?

 

[yz250f]

It went good, however I sold it five years ago.

I know the threads old. But I am really wondering what you thought of the motor? Is it worth building for someone on a budget? Was it reliable? What kind of power was it comparable to?