RD250 to 350 questions,

[PhilMill63]

Here's some more pics, they do look pretty poor quality

[m in sc]

i mean, not really bad, you need to chamfer the ports as everyone knows, but thats about on par with most stock factory rd cylinders.

 

[38special]

That looks on par with the set of US/UK spec repros I got.  They are a rougher casting than the India spec repros, but the ports are in the right spot, and the lining is thicker. 

Clean them up and run them!

[PhilMill63]

i mean, not really bad, you need to chamfer the ports as everyone knows, but thats about on par with most stock factory rd cylinders

 

Fair enough, I'll get some pistons, chamfer the ports and give them a go.

[PhilMill63]

That looks on par with the set of US/UK spec repros I got.  They are a rougher casting than the India spec repros, but the ports are in the right spot, and the lining is thicker. 

Clean them up and run them!

Thanks.

[RDnuTZ]

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[RDnuTZ]

assuming you know about length difference between RD250 & RD350 cylinder mount studs

[PhilMill63]

assuming you know about length difference between RD250 & RD350 cylinder studs

Yes, thanks, I have already changed them.

[gargantua350]

Just to add a bit of confidence.  I used my set of cheap ebay cylinders that had approximately 2000 miles on them already and traveled on route 66 for 450 miles to the Amboy crater.  I had no issues.  There was one point on an incline I held the throttle open for a few minutes as I was loaded with packing gear to try to keep up with the other bikes.  I passed them up on mountain roads though lol.

The top end still sounds quiet and tight no rattling sounds.  I ride the bike hard but run premix and timing at 1.8 btc.  It's jetted on the fat side so i'm sure that helps.