Do some 2 stroke oils give more spluge?

[nzspokes]

Im using Castrol 1 TTX. Do some brands give more splurge or are they all about the same?

[FJRider]

Im using Castrol 1 TTX. Do some brands give more splurge or are they all about the same?

I've found Castrol Marine give a better result ... but that's my opinion ... :sunny:

[caspernz]

If the mix has a bit too much oil the result is as you say. But then a bit too much oil is usually better than not enough :innocent:

Or if the premix has sat for a while, the lighter fuel component has partly flashed off, leaving a mix with a bit more oil and the result is an oily exhaust. Tip it in your neighbours' Prius and mix a fresh tin :bye:

[SaferRides]

Im using Castrol 1 TTX. Do some brands give more splurge or are they all about the same?Splurge? Are you using premix?

[nzspokes]

If the mix has a bit too much oil the result is as you say. But then a bit too much oil is usually better than not enough :innocent:

Or if the premix has sat for a while, the lighter fuel component has partly flashed off, leaving a mix with a bit more oil and the result is an oily exhaust. Tip it in your neighbours' Prius and mix a fresh tin :bye:

I always use a fresh mix. Will try some different oils after xmas.

May sit it on a dyno as I can never seem to nail the jetting.

[george formby]

I used to use Castrol but it was a bit spoogy, power valve was sticky and I had carbon in me pipe. This is probably more a reflection on my limp right wrist and slow technical riding. I don't get much chance to really wind the bikes up off road, I keep running into scenery.

Motul 710 is the lube of choice nowadays and I have had zero issues. Even after a day of mud plugging and paddling their is no fouling.

Castrol may have the edge smell wise, but it's close.

Both my bikes are oil injection, not pre mix.

My mate has been running his KX 125 at 40:1, agip 2t, the last two weekends. No problems at all, even mud plugging yesterday. Slightly higher oil ratio for harder riding, 32-35:1

[F5 Dave]

Spooge is caused by jetting not the oil so much. Incomplete combustion means more raw fuel out the pipe. That fuel contains oil.

Get on the bike specific forums, the usually have needle recommendations. Needle right first then everything will be easy after that.

[nzspokes]

Spooge is caused by jetting not the oil so much. Incomplete combustion means more raw fuel out the pipe. That fuel contains oil.

Get on the bike specific forums, the usually have needle recommendations. Needle right first then everything will be easy after that.It seems to want very lean jetting compared to others so I'm concerned something else is up. Will do a compression test next week and see if it needs a top end.

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[husaberg]

Im using Castrol 1 TTX. Do some brands give more splurge or are they all about the same?
my 5 cents
If your bike has a Kehin carb and is over 5 years old its likely not the oil.
The Needle wears out the fixed Needle jet
Genarally the jet is not replaceable so you put in a thicker needle.

[george formby]

my 5 cents
If your bike has a Kehin carb and is over 5 years old its likely not the oil.
The Needle wears out the fixed Needle jet
Genarally the jet is cot replaceable so you put in a thicker needle.

Interestin. Me Dad has a KDX220SR with a permanent flat spot in the delivery. Re-jetting has just shifted the flat spot. I will pass this little nugget on. Mind you, last time it came up he was looking at a flat slide carb for the bike.

[husaberg]

Interestin. Me Dad has a KDX220SR with a permanent flat spot in the delivery. Re-jetting has just shifted the flat spot. I will pass this little nugget on. Mind you, last time it came up he was looking at a flat slide carb for the bike.

They worn Needle jet always results in a rich spot in the mid range and the dreaded oily pipe smokey exhaust.
it make the powerband narrower.
I would have thought ther KDX220 would have had the pwk flat slide carb.
There was some people making Needle jets for Keihin aftermarket.
But as its a faily common quirk most specialist forum sites will have a alternate needle that should cure the rich spots.
My old CR500 for instance you got a CR125 needle from a specific year that transformed the bike.
It blew that much smoke i thought it was a cluth side crank seal plus had a 125 powerband (brought off Trademe)

[george formby]

They worn Needle jet always results in a rich spot in the mid range and the dreaded oily pipe smokey exhaust.
it make the powerband narrower.
I would have thought ther KDX220 would have had the pwk flat slide carb.
There was some people making Needle jets for Keihin aftermarket.
But as its a faily common quirk most specialist forum sites will have a alternate needle that should cure the rich spots.
My old CR500 for instance you got a CR125 needle from a specific year that transformed the bike.
It blew that much smoke i thought it was a cluth side crank seal plus had a 125 powerband (brought off Trademe)

Apparently not on the SR model.

I put WR200 jets into my DT 230. Crikey:eek: It's no longer civilised. 150km / 11 ltrs fuel.... Fumes.

[F5 Dave]

5yrs?,! In constant use maybe. Plenty of PWK around that are fine. Good light and a magnifier will show if they are ovalised. I agree that is a problem and have made replacement needle valves. The tower is replaceable if you look around. I put a KX125 35mm carb tower into my 39mm carb when I damaged it with some grit that must have got in doing a needle change maybe. Same size tower.

KDX need needle change from new, as do GasGas. They use a skinny needle from the start so the pilot system doesn't really do much.

[nzspokes]

5yrs?,! In constant use maybe. Plenty of PWK around that are fine. Good light and a magnifier will show if they are ovalised. I agree that is a problem and have made replacement needle valves. The tower is replaceable if you look around. I put a KX125 35mm carb tower into my 39mm carb when I damaged it with some grit that must have got in doing a needle change maybe. Same size tower.

KDX need needle change from new, as do GasGas. They use a skinny needle from the start so the pilot system doesn't really do much.Yes 0ne fault is a leaking jet block gasket. Every tuning thing I have read says the stock needle is very good. But there you go.

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[husaberg]

5yrs?,! In constant use maybe. Plenty of PWK around that are fine. Good light and a magnifier will show if they are ovalised. I agree that is a problem and have made replacement needle valves. The tower is replaceable if you look around. I put a KX125 35mm carb tower into my 39mm carb when I damaged it with some grit that must have got in doing a needle change maybe. Same size tower.

KDX need needle change from new, as do GasGas. They use a skinny needle from the start so the pilot system doesn't really do much.

I posted a crowd that makes new aftermarket towers the other day somewhere.
http://www.hpracedevelopment.com/stic-metering-block.html
Not cheap though i would go with the OS needle.
Or a new OKO.

I know he Smaller PWK's list the Needle JET

[F5 Dave]

So what bike where we talking about?

[nzspokes]

So what bike where we talking about?My bike is a 06 KDX200.

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[husaberg]

http://www.duncanracing.com/mm5/merchant.mvc?Screen=PROD&Product_Code=K-CR35-K
https://bpracingatv.com/index.php?route=product/product&product_id=357
https://bpracingatv.com/index.php?route=product/product&path=188_209&product_id=359 (https://bpracingatv.com/index.php?route=product/product&product_id=357)

35mm pwk

[nzspokes]

So have read a few people having the same issue as me and the cause is the jet block oring.

Will track down a security T20 torx and replace it.

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[F5 Dave]

Loctite master gasket is pretty good with gas.

[nzspokes]

Rode it yesterday, but mixed it at 50/1. Done a fair bit of reading on it and TTX is recommended at that so gave it a shot.

Jetting was way easier to sort and much less smoke. There is oil around the end of the pipe but its not running down the muffler.

Bikes running better as well. Happy days.

[nzspokes]

Just to wrap this up. Changing to 50/1 has resolved all issues I've had with tune.

Its now on 45/155 jetting. Bikes running great with good power.