posted April 14, 2005 07:53 PM
Edited By: zzzzzxxxxxr12 on 14 Apr 2005 22:06
Dyno run = Rebuild Well after 6700 miles of riding my 00 red 12r , i decided to break out the check book and go get some performance work done. I already had a Arrow full system on the bike so i decided to take it to the shop for a tune up, DJ 3 usb, valve adjustment, and of course dyno and custom map. Got a call today telling me that after them doing all the work , they were doing a high speed Dyno run and all of a sudden a strange noise occured. They pulled the valve cover to discover one of the Valve stem keepers had come apart. They then pulled the head and of coarse found the valve(kind of bent). Bummer. It scared the piston and the head needs to be reworked.
Is there anything else i should make sure they look at, or do while they are fixing this? Has this happened to you?
posted April 15, 2005 04:37 AM
yes put a new bearing on that rod!! and have the rod checked to make sure this is ok. ask them just an fyi, after they adjusted the valves, what valves they adjusted if any. if they adjusted that valve? and if not what were the clearances of the valves?
posted April 15, 2005 07:49 AM
let me guess it was the #1 cyl exhaust valve?
____________
Builder and tuner of some of the fastest N.A. and P/A Hayabusas and ZX12 /14 in Texas
posted April 15, 2005 01:39 PM
Johnnycheese,Mine were white on the ends,are they problematic or just a bitch to measure?
ZZZZZXXXXX12R sorry to hear about your bike especially now that riding season is just starting.
____________
I wondered why the baseball kept getting bigger. Then it hit me.
posted April 15, 2005 01:50 PM
stock exhaust valvles sux
____________
Builder and tuner of some of the fastest N.A. and P/A Hayabusas and ZX12 /14 in Texas
posted April 15, 2005 08:06 PM
Edited By: zzzzzxxxxxr12 on 15 Apr 2005 21:07
#1 cylinder exhaust valve, how did you know? Nice thing about this is the shop is picking up the tab. He told me it really isnt his fault, but with this being my first time there, and also spending about 1800.00 bucks, he wanted me to beable to spread the word that he runs a quality shop. He sent the head out and, ordered a new valve, guides, checked the deck height.
posted April 16, 2005 04:51 AM
Because I have now had 3 do this, F##@!$%$'ing Kawasaki should do a recall.
I garrantee the head is junk, you need to send the cylinder to millieum to have it plated, and sufraced,replace the exhaust (or intake aswell) with some SS valves,do not use stock again
____________
Builder and tuner of some of the fastest N.A. and P/A Hayabusas and ZX12 /14 in Texas
posted April 16, 2005 04:59 AM
Come on John.... how can you guarentee with out even seeing it. I have a bent valve sitting here at work on my desk that came out of my head. we replaced the valve guide, and valve and I have not had any problems with the head since... I did have to lap the valve in, and put in a set of SS the year after....
Oh, zzzzxxxxxxr12 if you want to throw that "junk" head away I will pay shipping to my house!
posted April 16, 2005 08:12 AM
it dedends the two heads I have here need new seats and the domes are hammered
____________
Builder and tuner of some of the fastest N.A. and P/A Hayabusas and ZX12 /14 in Texas
posted April 16, 2005 08:43 AM
Edited By: spencercyclecom on 16 Apr 2005 09:44
ALL I used are stock valves..... stainless valves have always gotten beat up bad by the seats in the ZX12r engines i have done and dont last that long....stock valves last ALOT longer.....now ti retainers....is a different story. I dont see anything wrong with stock valves and will continue to use them.....
i would say the springs are very light also in the zx12r....thats why you dropped the valve
or MOST Likely they adjusted the valves wrong...and when they hit the limiter the valve floated and spit the shim.......have seen that happen alot on suzuki 1000's
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Thanks
Doug Ray
SpencerCycle.com
SpencerCycle Center Inc.
Spencer Performance Group Inc.
Toll Free 1-800-510-1945 ext #10
International 1-800-510-1945 ext #11
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posted April 16, 2005 02:08 PM
wasnt he spraying????
did he have ti retainrs????
____________
Thanks
Doug Ray
SpencerCycle.com
SpencerCycle Center Inc.
Spencer Performance Group Inc.
Toll Free 1-800-510-1945 ext #10
International 1-800-510-1945 ext #11
Local/Tech 1-704-642-0987 ext #12
Fax 1-704-642-0987
posted April 16, 2005 03:18 PM
nope all motor H/D springs , the valve broke where the stem meets the face parts in fact that is where all of them broke
____________
Builder and tuner of some of the fastest N.A. and P/A Hayabusas and ZX12 /14 in Texas
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posted April 14, 2005 07:53 PM
Edited By: 
posted April 15, 2005 03:59 AM
