| Author | Message | ||
     Georgehitch17 |
Its that time and I was curious if this is something I could have done for around $500. I live in Ashland I wouldn't mind drving to Columbus or Cleveland or anywhere within a couple of hours. Im just trying to see if it can be done for $500 | ||
| D_adams |
It can be done for considerably less if you do it yourself. Max outlay of about $100 for oil/filter and 8 shims (actually an entire box if you want) and a few (maybe 8) hours of your time. http://www.procycle.us/bikepages/ktm.html for an entire selection of shims. | ||
| Georgehitch17 |
I know it can be done but my garage is under a remodel do to all this lovely ohio rain and Im working 6 days weeks. I would rather just pay $500 if possible | ||
| Two_seasons |
Read this badweb thread... http://www.badweatherbikers.com/buell/messages/290 431/716313.html?1373341915 | ||
| Sir_wadsalot |
Why in the hell don't these things have hydraulic lifters if it's this difficult to get to the shims? | ||
| Clutchreaper |
"Why in the hell don't these things have hydraulic lifters if it's this difficult to get to the shims?" WWWWWHHHHHHHAAAAAAAAAAAAAAAAAAAA???  Lol! DOHC or  c | ||
| Reepicheep |
I do appreciate the lack of valve adjustments on my air cooled Buells! I believe the reason for not having hydraulic lifters on hyperbikes is to wring a few more RPM out of them via a lighter valvetrain. Hydraulic lifter valvetrains are heavier than shim and bucket. | ||
| Sir_wadsalot |
Actually my somewhat whiney question is valid. TLR's had hydraulic lifters, my SV1KS had hydraulic lifters, and if I'm not mistaken, GSXR 1000's still have hydraulic lifters. So "hyperbike performance" is no excuse. If you design a bike that you know is going to have to be half disassembled to do valve maintenance on, you should put hydraulic lifters in it to save your customers some headache. How could a thoughtful engineer possibly overlook that? Shameful!  But then I remembered... oh yeah, Rotax uses a finger follower valvetrain....moron.   I was umm, just testing y'all. Yeah, that's it! I do miss yawning and laughing at my brother in law on valve adjustment day. Them hydraulics will spoil ya! Back to being a real biker.....at least there's no chain to screw with! | ||
| Sparky |
Don't bet on it... does yours have belt or gear driven cams? I understand there have been some cam chain guide failures with these 1125s. We're not quite home free. | ||
| Froggy |
Nope, I just downloaded the 09-2011 GSXR 1000 service manual, it requires valve adjustment every 14,500 miles. Also, everything in engineering is a trade off. One thing will be easy to do on Bike X, but a pain on Bike Y, then another thing will be a pain on Bike X but easy on Bike Y. Look at replacing a clutch on a BMW GS 1200, that is significantly more involved than disconnecting a few bolts and cables to separate the frame from the motor on the 1125. (Message edited by froggy on July 11, 2013) | ||
| Sir_wadsalot |
@Froggy- Of course. I just meant it's a lot more work than lifting the tank on a UJM sportbike. I know about the cam chains, I meant the drive chain! I love not haveing to clean and lube that damned thing, and I rub it in my "normal" sportbike buddies faces at every opportunity. Rotating the engine lookes like a damn nightmare, compared to pulling the Frank. I came to the conclusion the Frank-off would be easier, Jdugger says that's what he does too. I know there's some hyperbole in your statement, but is it really that simple? Also, why is it reccomended to rotate the engine if pulling the Frank is easier? Or more importantly, quicker? Is the Frank-off more technical? (Serious question, not breaking balls.) Not that it's a problem, I was a heavy equipment mechanic in the army. If I can swap out a D7 dozer engine in a tent in a sandstorm in Iraq, I can adjust my damned valves!!!  | ||
| Froggy |
Why do you want to keep pulling me so bad? What did I ever do to you?  (Message edited by froggy on July 12, 2013) | ||
| Fast1075 |
There are engines with hydraulic valve adjustment that suffer no rpm penalty because the hydraulic part does not move. The penalty in a motorcycle engine would be that the design is not as compact. | ||
| Sir_wadsalot |
Suzuki's GP team has used hydraulics for years, (not sure about now) and they did have paracitic loss isues, but that's far from a street bike. It didn't seem to hurt Mladin's Gixxer thou when he was raping AMA/SBK. I guess on the smaller engines (compared to a car) the drag/paracitic loss issue is more prevalent, but it really surprises me that hydraulic lifters aren't more prevalent in motorcycles. Traditionally, the problem with them is valve float at high RPM. Thus finger followers & desmodromics in high RPM motorcycles, dragster engines and high compression diesels. Positive valvetrain management. The most current leap there, is the progressive rate beehive spring. That's what's kept the pushrod V-8 alive. I remember about ten or fifteen years ago it was the "new" thing in the high dollar aftermarket small block heads. Now they're stock in everything, even the 600hp + blown Corvette engines. I think it's more a moto-mindset philosophy of design. Finger followers and desmodromics are high spec sex appeal. (Being a diesel guy, I'm fond of them.) Hydraulics are heavy and simple, like your best friend's chubby little sister. Fun to ride, but you don't take pictures when you've got the covers off. | ||
| Jdugger |
Mmmmm.... plumpers... | ||
| Clutchreaper |
If our bikes maintained the same number of overhead valves it would be an engineering nightmare with that many lifters. The whole valvetrain and head design would have to be downgraded. I say downgraded because flow numbers would fall, plug locations would change, and cam profiles would be compromised with hydraulics. Even if they went to two valves per cylinder with hydraulics the performance wouldn't be there. Good bye ponies. Another benefit of the DOHC design-valves follow cam profile better. Not trying to rain on your parade. Just trying to help you see that we have it good with the Rotax. (Message edited by clutchreaper on July 12, 2013) | ||
| Sir_wadsalot |
 Did you not see the "I'm with stupid" part of my post? | ||
| Clutchreaper |
Lol! I actually forgot about that. I just skipped to the bottom looking for new posts.  | ||
| Ducbsa |
Didn't some DOHC Hondas have hydraulic follower pivots that didn't reciprocate, just sat there maintaining proper valve lash? | ||
| Kicka666 |
TLR's had hydraulic lifters, my SV1KS had hydraulic lifters, and if I'm not mistaken, GSXR 1000's still have hydraulic lifters????? Sorry but you are wrong they are all bucket over shim the last time I checked & I have owned all 3 bikes you are refering to.... The finger followers on the 1125 are a lot easier to do than the bucket type shims. | ||
| Zac4mac |
Lifters are only used in pushrod engines.<edit> maybe SOHC motors too... If the motor uses rockers, it may have lifters too.. DOHC the cam runs the valves directly, thru the shim/bucket or shim/follower. Most DOHC DO use hydraulics to maintain tension on the cam chain/belt. The ones that don't use springs or gears. Z (Message edited by zac4mac on July 13, 2013) |
