Hey guys.
Compression on my nsr semed suspiciously low, since i got it.
Borrowed a compression tester from a friend and my suspicion was confirmed.
35 psi on the front cyl. and 40 psi on the rear one.
My last hope is, that the poor compression is caused by the rings being stuck in their grooves from some oil or coke sitting in there for many years.
On the other hand, i got the bike running for a few minutes, some months ago, which should have resolved the stickiness.
so that´s propably a very thin straw, im hanging onto.
Went on the hunt for some replacement pistons and found some alternatives.
one 400$ top end rebuild kit from tyga
one 140£ set of mitaka pistons and rings on ebay
and one 40£ set of unbranded pistons on ebay from china. (offer name on ebay is "Racing Piston Ring Kit for Honda NSR250 MC16 MC18 MC21 MC28 Sets")
obviously the latter has a extremely high chance of bein straight up garbage. Still, I´m somewhat curious, about what you can expect for such a price.
Now which of the two more serous options should I go after?
Thanks for your help.
best Regards,
Elias.