So my first South East race weekend went tits up on Saturday morning.

Fresh top end was working good. Had two heat cycles in it before getting to the track, and a third one first thing in the morning. Went out to break in the top end, and went fine for the fist session. The second session was going okay, when on the second lap coming into the last turn the bike seized. Got the clutch in just as it happened, and coasted it into the pits.

Lost the big end bearings on the lower cylinder. Checked everything out and all looked good. No issues with the top end, the reed valves looked good, jetting was fine, bike was at 65 degrees.

With a race August 12th, and traveling for the next two weeks, I am in a pinch to get it put together. Hopefully I can talk to the tuner who built the engine today and he will be able to take the engine and get it fixed by then.

I just need to find out if he can, what he needs off the engine, and get that ripped out tonight and boxed up so it can be shipped out tomorrow before I take off. Then get on the phone and order all the parts needed.
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Charles Gallant

Well good luck and well done for being the fastest (clutch) hand in the South East.

I wonder if he's as quick as our very own Cool Hand Luke?! He's had more practice than most!!

How much is an NX5 crank these days Charles?!

Mind you, let's be honest, for racing Honda 2-strokes all these years, you've had very little by way of mechanical failure. It shows the difference between a well prepared bike and one put together with hope and a prayer!
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Andy.
NSR-WORLD.COM

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I think you'll find that an NXA crank Mr Grant, and your right, these two strokes will always bight eventually

Oh, of course... it has a proper swingarm!
_________________
Andy.
NSR-WORLD.COM

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Please DO NOT PM me for technical advice. My time is precious, and you will probably receive a faster response on the Forum anyway.

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crank actually has two part #'s. One an NX5 and the other an NXA. I don't think it matters what you order, you get the same thing.

The crank is just under $1000.00. I have a spare backup, but would rather just buy a new one and keep the spare for a really rainy day.

I think overall, I will be looking at just udner $2000.00 for all the parts and it being built by one of the top 250 tuners in the US (spent a couple hours on the phone with him yesterday getting things lined up).

Just need to get it pulled, cleaned and shipped (this weekend will be fun)

As for the low failure count. Yes Andy, the Honda's have treated me well. I have had a lower end failure on an NSR, but with 30000 kilometers on it, I only expected that to happen. I have never had any other failures on my race bikes, and only one top end booboo on my girl friends bike I was working on for her.

I just need to go through and figure out what really happaned on this one, as I felt it was all good. may go fatter on the mains and the slows as things seemed a little "dryer" then normal on the plugs. Being at sea level with higher humidity may have been my downfall, and my normal high range may have needed to be lifted for safe jetting.
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Charles Gallant