Minarelli 2 stroke compression changes after warming up?

[paydem]

After installing a no-name 70cc BBK for my Minarelli Horizontal 2 stroke engine and putting around 75 miles on it, the compression dropped a bit.

When the engine is cold, the compression is really good - when it warms up, the compression slightly drops. Still starts first kick, doesn't matter it's cold or hot. I don't have a compression tester to test how much it kicks in.

I'm interested if any of you had similar experiences. Should the engine drop some compression when it warms up?

[mantas]

Same here, when cold it speeds up and goes really well, when its warm the scooter is speeding up much weakier and longer.

[mantas]

Sept 13, 2018 8:05:28 GMT -5 mantas said:

Same here, when cold it speeds up and goes really well, when its warm the scooter is speeding up much weakier and longer.

I have 3000 kilometers on it though

[90GTVert]

Compression should increase when warm, but shouldn't be much of a spread between cold or hot. It would be helpful to check this with a compression tester though. If you only notice because of the kick, you may be feeling something else.