Any thoughts on deglazing a Nikasil cylinder?

[Momus]

On 2/3/2022 at 7:52 PM, mixxer said:

Nice to meet you dribble....

Let's just say that if only people who have owned Dyno Driven R&D performance shops and have built competition engines that pro riders have used to stand on pro podiums in many off-road racing genres as well as broken in hundreds upon hundreds of race engines on a dyno were allowed to talk in this thread.... There would be one poster....and it wouldn't be you

The lard of combustion has bloviated.

[Turboloader]

1 hour ago, Momus said:

That's 100% wrong.

Nikasil and similar proprietary bore coatings are cut using cubic boron and honed with diamonds.

Ditto re plateau honing for re ringing incremental oversizes.

Ball hone is used for cleaning carbon -the 'de glaze'.

Bull crap...Honing will ruin a nickasil cylinder, cmon man!

 

[Momus]

7 hours ago, Turboloader said:

Bull crap...Honing will ruin a nickasil cylinder, cmon man!

 

Talk to Sunnen for information. They supply the hones that Nikasil platers use.

Edited February 8, 2022 by Momus

[DEATH_INC.]

2 hours ago, Momus said:

Talk to Sunnen for information. They supply the hones that Nikasil platers use.

Yes they do. But it isn't some handheld thing. There's a little difference.

[Momus]

18 minutes ago, DEATH_INC. said:

Yes they do. But it isn't some handheld thing. There's a little difference.

How else are you going to get the pattern and control you need when manufacturing or replating?

Not with something hanging out of a drill.

 

Edited February 8, 2022 by Momus

[DEATH_INC.]

I think we have to accept that Moto knows what He's doing, anyone that can stick a hone down an electrofusion bore without killing it has to have some special skills.

[Momus]

13 hours ago, DEATH_INC. said:

I think we have to accept that Moto knows what He's doing, anyone that can stick a hone down an electrofusion bore without killing it has to have some special skills.

I do it regularly with carborundum stones.

They clean any soft stuff from the surface but don't touch the plating. To fix a high mileage cylinder 1 or 2 strokes of a diamond hone is required.

They plate quite thick- 003-004 is about minimum, so half a thou. or so up on the diameter is nothing.

 

Edited February 8, 2022 by Momus

[Momus]

8 minutes ago, DEATH_INC. said:

I think we have to accept that Moto knows what He's doing, anyone that can stick a hone down an electrofusion bore without killing it has to have some special skills.

Who is moto?

[DEATH_INC.]

 

8 minutes ago, Momus said:

I do it regularly with carborundum stones.

They clean any soft stuff of the surface but don't touch the plating. To fix a high mileage cylinder 1 or 2 strokes of a diamond hone is required.

They plate quite thick- 003-004 is about minimum,so half a thou up on the diameter is nothing.

 

On old Kawasaki electrofusion cylinders? No way the plating is that thick.

6 minutes ago, Momus said:

Who is moto?

Motox367. Engine rebuilder.

Edited February 8, 2022 by DEATH_INC.

[Momus]

22 minutes ago, DEATH_INC. said:

 

On old Kawasaki electrofusion cylinders? No way the plating is that thick.

Motox367. Engine rebuilder.

Had a look at his video. He's ok.

[Momus]

3 minutes ago, Momus said:

Had a look at his video. He's ok.

Electrofusion bores were crappy, so are some of the KTM OE Nikasil cylinders I have a few lying around.

I am talking about re plates for thickness. I make alumium liners and have them done.

Doing an SC500 Yamaha and a race 1973 XL250 big bore presently.