Ke125

**jasonu** · 15th February 2016, 06:54

Originally Posted by kel

Thought I should follow up on this one

Rejoice air coolers because there is hope!

This is the first time I've pulled the topend since the rebuild early last year.
The piston coatings have worked a charm. This piston has done 60 odd dyno pulls, last years GP, a couple of laps of Taupo, plus the Auckland 2hr. And look at it!
Attachment 319585 Attachment 319584
Firstly the crowns ceramic coating is fully intact, the skirt coating is wearing but its mostly still there, and the biggie - no burning under the crown

I'd recommend this mod to anyone (well almost anyone

)

All this with a 24mm carb...

**seymour14** · 15th February 2016, 07:17

Looks like it held up well, ours is watching the weather at Tokoroa for any signs of a cooling blizzard...

**mr bucketracer** · 15th February 2016, 14:05

Originally Posted by seymour14

Looks like it held up well, ours is watching the weather at Tokoroa for any signs of a cooling blizzard...

super soaker each side of the track

**kel** · 15th February 2016, 20:07

Originally Posted by steamroller

Shit nice work still looks mint what temp dose your bike run at. we are just working on trying to cool the kr more.

No idea, but it gets bloody hot!
Have been running a couple main jets up on what the dyno is showing as best, looks like its all working out pretty well. Although in saying that, it was way down on power in the later stages of the 2hr.

Originally Posted by jasonu

All this with a 24mm carb...

Are you sure? No one has ever checked

**steamroller** · 15th February 2016, 20:35

Originally Posted by kel

No idea, but it gets bloody hot!
Have been running a couple main jets up on what the dyno is showing as best, looks like its all working out pretty well. Although in saying that, it was way down on power in the later stages of the 2hr.

Are you sure? No one has ever checked

I have found the bigger tracks you got the air flow small tracks it gets very hot like 85c to 90c starts to lose power at 75c have you looked into any other ways of cooling.

**kel** · 15th February 2016, 21:13

Originally Posted by steamroller

have you looked into any other ways of cooling.

The only thing that would effectively cool the aircooler is to limit the power output, or do you mean replacing the barrel with a 110cc water cooled unit? Its still on the cards, Im just too busy with work, kids sport, etc.

**jasonu** · 16th February 2016, 03:20

Originally Posted by kel

The only thing that would effectively cool the aircooler is to limit the power output, or do you mean replacing the barrel with a 110cc water cooled unit? Its still on the cards, Im just too busy with work, kids sport, etc.

A bigger carb would make it run cooler. Prolly make a bit more HP as well.....

**kel** · 16th February 2016, 09:41

Originally Posted by jasonu

A bigger carb would make it run cooler. Prolly make a bit more HP as well.....

Yes I believe it would potential run cooler as long as you didn't go after more power. More power would mean more heat i.e. lots of power for the first lap or two, bugger all (if any) at the end of the race

**Muciek** · 16th February 2016, 10:07

Maybe You could try boost bootle idea like TZ in his thread?

**steamroller** · 16th February 2016, 17:11

Originally Posted by kel

The only thing that would effectively cool the aircooler is to limit the power output, or do you mean replacing the barrel with a 110cc water cooled unit? Its still on the cards, Im just too busy with work, kids sport, etc.

limit the 34 hp no way but do need to cool is some way if we water inject the motor it makes more power but is that classed as water cooling

**steamroller** · 16th February 2016, 17:14

Originally Posted by Muciek

Maybe You could try boost bootle idea like TZ in his thread?

tried that did not do anything at all

**seymour14** · 16th February 2016, 17:36

Originally Posted by steamroller

limit the 34 hp no way but do need to cool is some way if we water inject the motor it makes more power but is that classed as water cooling

Are you talking about a spray mister to the head? Simulating rain in essence?

That surely can't be illegal, but means your going to need a vessel to hold water in. More weight, weight that disappears in time though.

Or have you got another idea?

**steamroller** · 16th February 2016, 17:44

Originally Posted by seymour14

Are you talking about a spray mister to the head? Simulating rain in essence?

That surely can't be illegal, but means your going to need a vessel to hold water in. More weight, weight that disappears in time though.

Or have you got another idea?

How far can you take it when it rains its water cooled spraying water in the air is that the same thing gas cooling thats not water