Play time?

[Red97]

Has some holes..

Need to set squish, it hits by about .005"

Then I will put in the degree wheel and draw a line where I want the transfers. Was too chicken to poke them in blind.

Lots of work on the lowers, at that diameter they were tiny...

 

[traffic903]

Last try before I have to get more material.
View attachment 229605

What material is it?

 

[Red97]

What material is it?

Cast iron. Spin cast as a tube, just for cylinder liners

 

[traffic903]

Cast iron. Spin cast as a tube, just for cylinder liners

Can you run me through the pros and cons of going this route instead of replating. I guess the diy aspect is obvious and I'm really interested in doing something similar with a 3120 cylinder I have.

 

[Red97]

Can you run me through the pros and cons of going this route instead of replating. I guess the diy aspect is obvious and I'm really interested in doing something similar with a 3120 cylinder I have.

That is about the only pro... diy

May be an option for a worst case scenario jug.

But for the 200-280$ it cost to have one bored and coated with nikasil not sure if it is really worth it..

Actually if I didn't really enjoy this, just to see what I can do, I would send it out to be done.

I have 30$ and about 14 hours into this one sleeve. Now I could probably get that down to 6-8 hours but still...

 

[traffic903]

That is about the only pro... diy

May be an option for a worst case scenario jug.

But for the 200-280$ it cost to have one bored and coated with nikasil not sure if it is really worth it..

Actually if I didn't really enjoy this, just to see what I can do, I would send it out to be done.

I have 30$ and about 14 hours into this one sleeve. Now I could probably get that down to 6-8 hours but still...

And are there any issues in terms of using the cast iron? For example, can the same pistons be used? Is more bore clearance required? Is it harder on rings? Any requirement for different fuel oil mix? etc.
I appreciate you taking the time to answer my questions so far.

 

[HYPERSAWS]

That is about the only pro... diy

May be an option for a worst case scenario jug.

But for the 200-280$ it cost to have one bored and coated with nikasil not sure if it is really worth it..

Actually if I didn't really enjoy this, just to see what I can do, I would send it out to be done.

I have 30$ and about 14 hours into this one sleeve. Now I could probably get that down to 6-8 hours but still...

Is U.S chrome where you would send it to be bored and replated?

 

[Definitive Dave]

Is U.S chrome where you would send it to be bored and replated?

for blind cylinders US Chrome is the best option

 

[HYPERSAWS]

for blind cylinders US Chrome is the best option

That is what I thought thank you

 

[MG porting]

45,50,52,54,56mm all in the same chassis...
View attachment 229695

That's pretty dang impressive.

 

[Red97]

And are there any issues in terms of using the cast iron? For example, can the same pistons be used? Is more bore clearance required? Is it harder on rings? Any requirement for different fuel oil mix? etc.
I appreciate you taking the time to answer my questions so far.

Don't really have all the answers...

But have 1 liner cylinder that runs, only a couple tanks use so far.

Used the same piston/caber ring

I try and hit .002 clearance on this one. Looks to be pretty close in the ring travel area, more under the intake port from the hone flairing out trying to finish by the band.

Ring life? Idk? Some of the fancy rings may actually be hard on the bore..

I use the same heavy 40:1 ish in everything.

Is U.S chrome where you would send it to be bored and replated?

That was who I called, they didnt act super interested, stating how difficult it was to do a blind cylinder. Didn't matter size etc said price is 276$ if we think we can even do it. And may be more if they have to send out to id grind. Imagine he was taking about open transfer cylinders.

 

[Red97]

.035 out of the band.

 

[mgr1]

It's possible to make a sleeve from 6082 t6 alu and have it nicasil plated.

Cast iron keeps the heat in the sleeve and the 6082 gives the heat further tru the cylinder.

 

[Red97]

It's possible to make a sleeve from 6082 t6 alu and have it nicasil plated.

Cast iron keeps the heat in the sleeve and the 6082 gives the heat further tru the cylinder.

I'm sure it is. But I know plating an open bore is at least 150$

So it is rather cost prohibitive, vs sending a jug to us chrome for bore/plate.

 

[Red97]

Transfers roughed in.

Squish .031

As assembled

In 64.5
Tr 124
Ex 100



Trimmed the piston skirts in the lathe, it tried to walk out of the jaws. I'll get a new one, but a big bevel and run this for the time being.

No free port, and intake at 77 now.

 

[mgr1]

I'm sure it is. But I know plating an open bore is at least 150$

So it is rather cost prohibitive, vs sending a jug to us chrome for bore/plate.

I know, i am just a jealous guy...

 

[Red97]

Cases all cleaned, new bearing installed. Ready to go back together.

 

[Red97]

Get well soon 6202 bearings...

 

[traffic903]

Don't really have all the answers...

But have 1 liner cylinder that runs, only a couple tanks use so far.

Used the same piston/caber ring

I try and hit .002 clearance on this one. Looks to be pretty close in the ring travel area, more under the intake port from the hone flairing out trying to finish by the band.

Ring life? Idk? Some of the fancy rings may actually be hard on the bore..

I use the same heavy 40:1 ish in everything.






That was who I called, they didnt act super interested, stating how difficult it was to do a blind cylinder. Didn't matter size etc said price is 276$ if we think we can even do it. And may be more if they have to send out to id grind. Imagine he was taking about open transfer cylinders.

Thanks for that. Much appreciated.

 

[Red97]

Mostly roughed in.

Couple more things to do, may get it together later...

Numbers
In 78.5
Ex 97
Tr 118

Still need to do a final check, but those should be in the ball park.