Let us know how it works once you get it back together... -----Original Message----- From: Rick Davids [mailto:[EMAIL PROTECTED]] Sent: Tuesday, June 18, 2002 2:21 PM To: [EMAIL PROTECTED] Subject: Re: engine rebuild/ was Low rotation speed
The engine had only 30k miles. It's kind of a long story. Basically what happened is I took it to my local Yamaha shop for them to adjust the valves. They reported that the #3 cyl was way down on compression (something like 120, should be 190-200). They claimed to have done a leakdown test and said they thought a ring job would cure it. Probably all lies. They took forever to do it and then did a horrible job. When I got the bike back it was burning oil at the rate of about a quart every 500 miles. Plus it was way down on power. Dynoed at 70 hp. Top speed down to 120 from 140 or so (Not that I run at 140 very often, but it's nice to know I can) Anyway, the shop sucked so bad , a bunch of lying thieving bastards that could give a f about me or my bike(Pacific Yamaha in Harbor City, California). So I decided to do the job right by doing it myself. I wanted a minimum of down time so I just decided to go ahead and cover all the bases. I ordered new pistons/rings valve seals and started the job when they arrived. As long as I had it all apart I decided I might as well get a pro valve job done as well (did the poor mans test when I got the head off. Poured solvent into the ports. Some of the valves were leaking pretty fast). It probably would be a bit easier to work on if I removed the whole engine, but not really worth the extra work. Not too bad leaving the crankcase in the frame. I did have to unbolt the front shock to get the head off because one of the exhaust studs was hitting on the top shock bolt when trying to remove the head. Anyway, it's a big job but nothing has been particularly difficult. I'm probably taking about 5 times longer than a pro would take. At least when I'm done I'll know that the guy who did the work really cared about doing a good job. > >Rick, how many miles were on engine at time of >teardown? What kind ok wear did you find? >Was it better [easier] to leave crankcase still >in frame to do your work? Thanks. >-Pete >--- Rick Davids <[EMAIL PROTECTED]> wrote: > > Yup, > > > > New .5mm os pisons/rings. appropriately bored cyls, > > valve job. > > Just got the cylinders back on last night. A bit of > > a bitch, but not quite > > as difficult as I was expecting. > > > > > > > Sweet Jesus!! Rick, tell us about your rebuild!! > > Looks like you either > > > cleaned up or replaced the pistons, valves, rings > > and sleeves? > > > > > > Kevin Hawkins // Greensboro, NC > > >__________________________________________________ >Do You Yahoo!? >Yahoo! - Official partner of 2002 FIFA World Cup >http://fifaworldcup.yahoo.com _________________________________________________________________ Send and receive Hotmail on your mobile device: http://mobile.msn.com The information contained in this e-mail including any attachments may constitute Corvis Corporation Proprietary Information that is subject to Non-Disclosure Agreement and cannot be disclosed to any other party without the express consent of Corvis Corporation. If you are neither the intended recipient of this e-mail nor responsible for delivering this e-mail to the intended recipient, note that any dissemination, distribution, copying, or retention of this e-mail is prohibited. If you believe you have received this e-mail in error, we request that you notify the sender by return e-mail and then delete this e-mail and any return e-mail immediately.
