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Motorcycle Forum / General / Sportbikes / June 2007RZ-350, new top end working great
It cost over $1000.00 but after my 100 mile ride Sunday I pulled the plugs and they looked clean with just a light tan on the insulators. I did push the redline once on a Freeway on ramp but those pipes won't let it go much over 10,000RPM. It it just kinda dies out. Kind of a built in rev limiter, The rings seem broke in now, with no visible smoke running it in the garage and my friend tailing me said he he didn't see any smoke even when I accellerated but did smell the classic 2 stroke, of course. My canyon ride was my 1st with the thumb rear brake and it works great or not too sensitive, just a subsitute for the lack of compression braking so typical of a two stroke.The bike seemed the handle a bit lighter, especially in the really tight stuff than the Sprint but the front brake is not up to todays standards (future HHpads may help). Parking and moving it around is a snap compared to the 500+ lb Sprint, so that and getting the rear brake was my biggest improvement (post deer accident), Vibration is not bad at all for a twin. If I reach down and feel the motor it vibrates more than the bars, seat and pegs would indicate.They must be rubber mounted or something. Bob Nixon, RZ-350, Chandler, AZ. > It cost over $1000.00 but after my 100 mile ride Sunday I pulled the > plugs and they looked clean with just a light tan on the insulators. I [quoted text clipped - 14 lines] > vibrates more than the bars, seat and pegs would indicate.They must be > rubber mounted or something. Sounds like you've got it sorted out, Bob. Good to hear! The thumb brake sounds cool. Cable or hydraulic? Didn't Mick Doohan use a thumb brake after banging up his legs pretty badly?  SignatureJamin "I don't want a pickle..." -- Posted via a free Usenet account from http://www.teranews.com > > It cost over $1000.00 but after my 100 mile ride Sunday I pulled the > > plugs and they looked clean with just a light tan on the insulators. I [quoted text clipped - 28 lines] > > - Show quoted text - The thumb brake is hydraulic and bolts into the banjo fitting where the rear reservoir used to fit; now I have two brake fluid reservoirs on the handle bar. No light for the thumb brake thought the light still works on the foot brake. If someone is tailing me I have to feather the front brake when I use the thumb brake when setting up my corner speeds. Eventually as I get more used to the lack of compression braking; I won't need to rely on the thumb brake except for wet weather, sand and such. > The thumb brake is hydraulic and bolts into the banjo fitting where > the rear reservoir used to fit; now I have two brake fluid reservoirs [quoted text clipped - 4 lines] > compression braking; I won't need to rely on the thumb brake except > for wet weather, sand and such. That reminds me of a product I saw online recently. Hydraulic pressure switch for brake light activation: http://www.woodcraft-cfm.com/Scripts/prodList.asp?idCategory=12773 I know what you mean about wanting to flash the brake if someone's trailing you. I frequently do that when I'm in front of someone on a ride, especially if I know the road and they don't, or if I happen to see a road hazard they can't see yet. SignatureJamin "I don't want a pickle..." > corner speeds. Eventually as I get more used to the lack of > compression braking; I won't need to rely on the thumb brake except > for wet weather, sand and such. Yea, I was really surprised how strange it was approaching a turn on my RS-125. With no engine braking, the corner was sneaking up on me quicker than I expected. - Kurt > It cost over $1000.00 but after my 100 mile ride Sunday I pulled the > plugs and they looked clean with just a light tan on the insulators. I [quoted text clipped - 14 lines] > vibrates more than the bars, seat and pegs would indicate.They must be > rubber mounted or something. Wheelie good news! Iirc, the bars are rubber mounted. You might want to consider EBC full-floater brake rotors, in conjunction with HH pads, and of course - if you don't already have them, teflon/braided stainless steel lines. In my experience with racing EX500s with 2-piston calipers, the EBC full-floaters made a bigger difference braking feel and power than anything else. Of course, with a Yamaha, you have LOTS of early- model FZR600 front fork set-ups to choose from if you care to swap out the entire front-end. Even a TZ250 front end from around that time is likely to be a direct bolt-on. Glad to hear the bike is running so well. Are you using synthetic 2- stroke oil? I found that to be an amazing improvement in smoke-free riding and minimizing carbon deposits on plugs, piston crowns, and exhaust ports. On Jun 25, 2:41 pm, "tomor...@erols.com" <tomor...@erols.com> wrote: > > It cost over $1000.00 but after my 100 mile ride Sunday I pulled the > > plugs and they looked clean with just a light tan on the insulators. I [quoted text clipped - 26 lines] > the entire front-end. Even a TZ250 front end from around that time is > likely to be a direct bolt-on. Like all big metros, we had plenty of MC salvage yards then there is a whole network of parts, just for the RZ series, like aftermarket stinger pipes and such. > Glad to hear the bike is running so well. Are you using synthetic 2- > stroke oil? I found that to be an amazing improvement in smoke-free > riding and minimizing carbon deposits on plugs, piston crowns, and > exhaust ports.- Hide quoted text - > > - Show quoted text - Thanks for the tips, Tim and yes I use full synthetic T2 in the oil tank. Bob Nixon <bigrex2005@yahoo.com> wrote in news:1182795649.545673.255630 @z28g2000prd.googlegroups.com: > It cost over $1000.00 but after my 100 mile ride Sunday I pulled the > plugs and they looked clean with just a light tan on the insulators. Congratulations! Sounds like a ton of fun lies ahead. Like Tim said, Yamahas are pretty good parts-bin engineering bikes and bits and pieces of other bikes often bolt right on. I've taken a sudden interest in breathing new life into older machinery. I may have something a little wierd to report about my ST1100 in a few weeks. ab On Jun 25, 9:45 pm, Andy Burnett <tzri...@DONTEVENTHINKABOUTSPAMMINGyahoo.com> wrote: > Bob Nixon <bigrex2...@yahoo.com> wrote in news:1182795649.545673.255630 > @z28g2000prd.googlegroups.com: [quoted text clipped - 10 lines] > > ab Thanks, Andy. I'll be looking forward to your report. >I did push the redline once on a Freeway on ramp but those pipes won't >let it go much over 10,000RPM. It it just kinda dies out. Kind of a >built in rev limiter The angle of the baffle cone, diameter and length of the stinger and the restrictor of the silencer can be used to limit RPM. If you wanted to uncork it, you could safely get 72 horsepower at 12.5 K. |
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