KX100 Transmission oil color

Emmagator
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Emmagator

Is this a normal color after one ride after changing oil. New to me 2017 KX100. 
IMG 0472 1.jpeg?VersionId=0tka2I

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TKLEVEN
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TKLEVEN 10/30/2023 6:53am
10/30/2023 6:53am

were you doing alot of starts?

Emmagator
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Emmagator 10/30/2023 7:03am
10/30/2023 7:03am
TKLEVEN wrote:

were you doing alot of starts?

No racing, new bike for my 12 year old. This was his first ride and first 2 stroke ,so lots of clutch work getting use to bike. 

soggy
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soggy 10/30/2023 8:12am
10/30/2023 8:12am

Brand new bike?

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Emmagator
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Emmagator 10/30/2023 8:54am
10/30/2023 8:54am
soggy wrote:

Brand new bike?

No 2017.  Previous owner stated less than 30hrs on bike, but who knows. It does look almost brand new on the outside though. However, he never did top end and when I drained oil when I got it home, it looked similar to what I show in pic. 

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soggy
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soggy 10/30/2023 10:48am
10/30/2023 10:48am
soggy wrote:

Brand new bike?

Emmagator wrote:
No 2017.  Previous owner stated less than 30hrs on bike, but who knows. It does look almost brand new on the outside though. However, he never...

No 2017.  Previous owner stated less than 30hrs on bike, but who knows. It does look almost brand new on the outside though. However, he never did top end and when I drained oil when I got it home, it looked similar to what I show in pic. 

If the clutch is being used heavily the oil will discolor quickly from the fibers. 

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Emmagator
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Emmagator 10/30/2023 10:54am
10/30/2023 10:54am
soggy wrote:

If the clutch is being used heavily the oil will discolor quickly from the fibers. 

Ok thanks. I’ll probably just order new clutch plates anyway.

Also since I don’t have a compression baseline when with new top end, any value in compression testing? Or should I just rebuild top end to be safe?

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lostboy819
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lostboy819 10/30/2023 11:42am
10/30/2023 11:42am

Does the oil smelled like burned clutch ? if not don't bother with clutch plates but if you replace the top end and clutch plates then you know everything is new and ready to go.  

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garasaki
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garasaki 10/31/2023 7:56am
10/31/2023 7:56am

Looks like totally normal used tranny oil in a 2 stroke to me.

 

On a small bore 2 stroke, top end rebuild is pretty darn simple and cheap.  That's a lot of years on a stock top end.  I'd look at replacing it.  Clutch plates are cheap and easy too.

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mikelawlor
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mikelawlor 10/31/2023 10:10am
10/31/2023 10:10am

There’s not really any way to put a transmission oil cooler on a two stroke as there is no oil pump. I mean anything is possible. You could put an electric oil pump and cooler on it but it would be completely infeasible and unpractical. Just use a good high quality transmission oil for motorcycles and change it frequently. 

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Dirty Points 10/31/2023 10:23am
10/31/2023 10:23am
mikelawlor wrote:
There’s not really any way to put a transmission oil cooler on a two stroke as there is no oil pump. I mean anything is possible...

There’s not really any way to put a transmission oil cooler on a two stroke as there is no oil pump. I mean anything is possible. You could put an electric oil pump and cooler on it but it would be completely infeasible and unpractical. Just use a good high quality transmission oil for motorcycles and change it frequently. 

Give the thread title a second read.

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lostboy819
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lostboy819 10/31/2023 10:36am
10/31/2023 10:36am
mikelawlor wrote:
There’s not really any way to put a transmission oil cooler on a two stroke as there is no oil pump. I mean anything is possible...

There’s not really any way to put a transmission oil cooler on a two stroke as there is no oil pump. I mean anything is possible. You could put an electric oil pump and cooler on it but it would be completely infeasible and unpractical. Just use a good high quality transmission oil for motorcycles and change it frequently. 

brian-regan-confused 9.gif?VersionId=Z04M6XE8VG6u

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Richy
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Richy 10/31/2023 11:20am
10/31/2023 11:20am Edited Date/Time 10/31/2023 11:20am

Haha I read it like Mike did for a moment 😂

Does the manual give a 'spec' minimum acceptable compression?

Otherwise hopefully someone can chime in with experience. 185-200psi is mentioned on ThumperTalk, sounds about right.

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Emmagator
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Emmagator 10/31/2023 11:47am
10/31/2023 11:47am Edited Date/Time 10/31/2023 11:48am
Richy wrote:
Haha I read it like Mike did for a moment 😂 Does the manual give a 'spec' minimum acceptable compression? Otherwise hopefully someone can chime in...

Haha I read it like Mike did for a moment 😂

Does the manual give a 'spec' minimum acceptable compression?

Otherwise hopefully someone can chime in with experience. 185-200psi is mentioned on ThumperTalk, sounds about right.

From the service manual.

(Usable range) – – –
825 ∼ 1 280 kPa (8.4 ∼ 13.0 kgf/cm², 119 ∼
185 psi)

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