J-Engine 410cc Thread

I use a digital torque wrench, evenly criss cross the bolts up to 25 nm then in 2.5nm rises goes around till 35nm, have a Coffee and then up to 37!
Worked for me!
Any more updates? Is the 410 still performing well, oil consumption issues, etc? How about the fuel type you are using (octane) and fuel mileage. Seriously considering this kit for my Meteor that is already fitted with a Hunter throttle body. Thank you
 
The 411 performs well and will run on the stock ecu. No oil use.
I have now replaced this with the 477(500 kit) but the 411 is an easy job in comparison.
Fuel for the 411 was standard unleaded.
 
Let me throw some comments in here about the 410 kit. I have a ‘22 Meteor and a ‘23 Classic reborn. Where I in live in hill country, they needed some help. Both got a DNA filter & cover, fuelx lite, a decat, plus the 16t countershaft sprocket. Meteor was good to go. The Classic still seemed a bit off. Maybe riding position, lack of a fly screen, or whatever, dunno.

So the Classic got a Kent cam and a Red Rooster exhaust. Kept the baffle in for sound, but modified it for a bit more flow. Performance didn’t seemed to be much enhanced, so went for the big bore kit. This changed everything.

Easy to install, took less than a few hours. Started right up, settled in to a nice idle, and after about 20 minutes of that, took it for a ride. I get a little popping on downshifts and sometimes accelerating it seems to hit a flat spot for half a second, in the lower rpm’s. Aside from that, it put the bike right where I want it.

I use to shift about the 5 to 5.5k rpm range, kept the engine higher in the rpms, but now it pulls very strong from 3.5k rpms and I can shift in the 4 to 4.5 rpm range. The roads I drive do not require speed, but power. And now I have it.

I use the Classic for (and is setup for) back roads cruising. I use the Meteor for (and is setup for) longer straight line trips. But now I’m going to up the Meteor to 410. I ordered the gasket set and a new Himalayan piston. I’ll take the cylinder from the Classic and have it bored (just need to locate a machine shop). I probably won’t upgrade to a hotter cam or exhaust.

FYI.
 
’ll take the cylinder from the Classic and have it bored
The liner is not fit to be bored out. It has 2 layers and the out layer is a different material, not fit as cylinder wall. A new liner will be needed. Touting my own horn here but I bet you ordering another set from us will be cheaper.
 
Can I just purchase a new cylinder from you or can I send this one to you and have a new sleeve installed or do some sort of exchange?
 
Can I just purchase a new cylinder from you or can I send this one to you and have a new sleeve installed or do some sort of exchange?
you have PM - such things of monetary nature are best discussed in private :-)
 
I n the Netherlands bore and Nicasil coating cost +/- 400 euro. So buying from you would be beter. So you always have the original cilinder in reserve.
 
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