I agree that if the kit is built right it will be very reliable - especially if it's fitted with a long rod crankshaft and the compression ratio is kept within check. I take issue with the "hang with a 250r" line though. The Blaster, no matter what's done to it will, simply put, never come close to hanging with a TRX250R, that is if the whole range of operating conditions/quality components are considered. Don't get me wrong (no hate mail please) I love the Blaster and I love to drive them. We own one and are going to buy another in the near future. But "facts is facts" - tear apart the two engines or complete quads side by side, you'll see. It's an antiquated generic engine design that's housed with moderate service duty components and its chassis is clearly entry level.
Even if the Blaster can put together a fairly good run or two from time to time its air cooling robs too much power too quickly and it soon falls on its face. If not the engine, the chassis will be pushed beyond its ability to perform well and it'll show ugly behavior that way. Having said that I can now say that these machines, if driven within their capabilities perform extremely well and are as easy to drive as it gets. I can also say that I've been known to push our Blaster a bit and have found it to do amazing things, but only amazing for that machine.
Do you want to make the fastest Blaster possible? Grab a spark plug wrench and remove the spark plug from the Blaster engine, then screw a TRX250R onto it...
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