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Thanks Bashan

Looks pretty easy.

1) Do you think the gasket would have to be replaced if you opened that up?

2) It doesn't look too hard to change the final gears at that point. Have you ever done that?

I always wondered if that would be an easy way to improve performance, but I thought you needed a special gear puller.

Doug

Hi guys

been awhile since I posted here. Here is my question.

With a UNI filter and a free flow exhaust what size jets do you suggest

I read this but it seemed really high

Properly Selecting And Installing Carburetor Jets
[12,251 views - 6 comments - Rating 5/5 ***** ]
Sizing at sea level:
With UNI filter 120-125
With UNI filter and low restriction exhaust 130-135
With UNI filter, low restriction exhaust, A12 cam, performance coil & CDI and NGK Iridium spark plug 135-140

Test procedure:
1. Run engine at less than half throttle a minimum of 15 minutes to close electric choke
2. On a 300' or 100 meter stretch or greater, run the engine at wide open throttle
3. While still holding the gas pedal to the floor, cut the ignition
4. Remove the spark plug and inspect end for color
a. White - Increase jet size
b. Tan/Brown - Correct jet size
c. Black - Decrease jet size
5. Clean spark plug with brass wire brush and check the gap prior to next test run

I personally don't ever want to have to deal with it again.

I see new engines on Ebay for $200! For that, I should just throw this engine away!

After new tools (flywheel puller) gaskets, and crankshaft, I'm up to $100 already and Im not even sure this will work when I put it back together!

However, I do feel pretty proud that I've gotten this far.

I have filmed the entire process, so one day I'll have a YouTube video up

Hello all

I am in the process of splitting the case and putting in a new crank

Question.. How do I get the gear that is right behind the variator off? That is the last thing holding the crank into the case.

Side question, what about the timing chain? When do I take that off or how ?

Well I did an oil change

No metal in the oil, but about a Tablespoon of blue paper gasket material???!

What the what?!

No change in the noise after the new oil

Looks like a tear down is in my future (bummer)

Yep

That is the noise

I skimmed your thread, what was the final verdict. Or better yet, what should I do now? (after the oil change)

What is causing that noise? Is it fixable?

Hello All Docs

I have developed a strange whirring noise. It is tied to RPMs and it sounds like a medium pitched whirr

I took off the variator and ran the bike without it, and the noise was exactly the same, so I know it is not tied to the variator, belt, or clutch.

Side note- at times I have to hit the starter twice, as my 160cc piston and cylinder seem to have a good amount of compression

My thoughts are perhaps the bearing that the variator shaft runs on?

I really need some advice on this

Is it OK to keep riding?

Help guys!