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Xb9
| Posted on Friday, December 14, 2007 - 11:28 pm: |
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EZ, I think they hit all the points that needed some attention, and then some. The new '08 oiling system is huge. I had two gearcase related failures on two different '03 engines (after 20k+ hard hard miles ea. including alot of extended WOT track time). Wiped out a camshaft on one and spun the cam bushings in the other. Not everyone had these types of problems, I think only under severe extended high rpm service & heat would these issues show up. They took care of the other problem area a few years ago, '06 I think when they did the major re-design on the transmission. Damn countershaft retaining screws... I won't go into that poor '50's design. And the loosening compensator nut problem is redesigned this year also - I can't think of any other stones left unturned.. should be very very very solid now. |
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Ezblast
| Posted on Monday, December 17, 2007 - 03:51 pm: |
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I just don't want another sucked guide as a part of my life - been through two - one trashed a motor and the other I caught in time. Sooooo - I'm just a bit leary there - lol EZ |
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Brent_crossbronkos
| Posted on Tuesday, December 18, 2007 - 07:40 am: |
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Ezblast: as a prof engine builder the only time I have seen a non-stepped guide drop is when the interference fit between the guide and the head is not correct (eg: too loose) or there is a defect in the head casting (possibly a crack or a soft casting). Extreme overheating of an aluminum head could also be a culprit. Having said this though - I still prefer a stepped or "shouldered" guide any day over a non-stepped guide and I really don't know why manufacturers continue to use the latter - probably a cost cutting alternative for sure! |
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Spike
| Posted on Tuesday, December 18, 2007 - 11:36 am: |
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I'm way off topic here, but came across this the other day and since you guys are discussing valve guides this might be of interest to you: http://www.corvetteactioncenter.com/specs/c6/2008/ ls3_page1.html It's an in-depth look at the design of Chevrolet's new LS3 Corvette engine with lots of details about what went into the head design. |
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Bcordb3
| Posted on Tuesday, December 18, 2007 - 06:40 pm: |
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It seems to me Buell has a long way to go to match the quality of my other two rides Maybe time to sell your Buell, how many miles on it? |
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