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Post by mike1972 on Jan 8, 2021 16:02:36 GMT 1
hi , I have just purchased a aprillia rs250 chassis and will be fitting a ypvs engine with 421cc bores crank etc ,
looking forward to getting the best info and advice from here about the engine mods
new to rd350 engines, but built plenty of others eg nsr250 ns400 rgv250. just have to source an engine now.
cheers mike
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Post by midlifecrisisrd on Jan 8, 2021 16:19:48 GMT 1
Welcome in Mike, nice sounding project
Get in touch with muttsnuts or MBD on here. Both very fluent on 421's and bigger
Mutts even has an RS 421
Steve
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Post by mike1972 on Jan 8, 2021 16:25:50 GMT 1
Welcome in Mike, nice sounding project Get in touch with muttsnuts or MBD on here. Both very fluent on 421's and bigger Mutts even has an RS 421 Steve cheers, I,ll defo be in touch with them when I start building the engine |
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Post by midlifecrisisrd on Jan 8, 2021 16:50:20 GMT 1
Where abouts are you
Mutts is Yorkshire way and has his own dyno
Steve
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Post by mike1972 on Jan 8, 2021 16:52:35 GMT 1
Where abouts are you Mutts is Yorkshire way and has his own dyno Steve i.m in Manchester, so only an hr or 2 away |
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Post by alibongo on Jan 8, 2021 17:24:16 GMT 1
Greetings fellow Manc.
Sounds like it will be an interesting build, best of luck.
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Post by mike1972 on Jan 8, 2021 19:10:18 GMT 1
Greetings fellow Manc. Sounds like it will be an interesting build, best of luck. thanks, looking forward to getting stuck into it |
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Post by andy748 on Jan 8, 2021 19:21:01 GMT 1
Welcome in Mike, get plenty pictures of the build on here, looking forward to it. Andy.
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Post by dusty350 on Jan 8, 2021 20:12:16 GMT 1
Hi Welcome to the forum  Dusty  |
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Post by 4l04ever on Jan 9, 2021 9:12:32 GMT 1
Maybe worth considering a 385 engine, as you get to keep the power valves and get a lot nicer power curve. If you have an ignitech ignition on you can always have an alternative power valve curve to give you more of a kick when the power comes on.
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Post by arrdy350 on Jan 9, 2021 11:49:31 GMT 1
Welcome to the forum 👍 Good luck with the build
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Post by mike1972 on Jan 9, 2021 13:13:38 GMT 1
cheers everyone , once I source the engine and the build gets underway I,ll start a build thread
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Post by Dangerous on Jan 9, 2021 17:13:40 GMT 1
Welcome mike, looking forward to seeing pics of this build👍
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Post by jessy03 on Jan 9, 2021 18:39:09 GMT 1
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Post by 123 on Jan 9, 2021 20:20:22 GMT 1
welcome mike best of luck
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