September 3rd, 2018, 10:39 AM | #1 |
ninjette.org newbie
Name: Luiz
Location: Brasilia
Join Date: Sep 2018 Motorcycle(s): Ninja 250R Posts: 7
|
Camshaft Timing Question
Hi! I've just done a valve clearance job on this bike, but I'm having a hard time aligning the camshaft on it's place, for perfect crank/cam timing.
The manual says the notch has to be aligned on the 2T mark, and the outer EX/IN marks on the camshaft should be aligned with the head surface, but it seems impossible to do so. When I first disassembled the whole thing, I noticed it was not as the manual says, 100% perfectly aligned, and also, the previous owner did a camchain replacement at the dealership (which they did a horrible job, they even forgot to put the CCT gasket on it's place, leaking oil at the CCT...). So, here are the pics of my engine top, for reference. When the 2T mark is aligned with the notch, this is the closest I can get aligning the camshafts as the manual says so (first two pictures). It's slightly not aligned. When the 2T mark is a bit off, the camshafts align perfectly (last two pictures). My doubt is: it should align 100% straight, perfect with the engine head surface, or is it only a reference? My bike has F.I., and I don't know if that changes anything with crank/cam timing. Before anything, I should say that I googled everywhere and saw some pictures of other bikes aligned, and that this is not my first time doing valves on a bike, I already did it two times on my car and previous bikes. |
|
September 4th, 2018, 03:46 PM | #2 |
ninjette.org certified postwhore
Name: .
Location: .
Join Date: Feb 2011 Motorcycle(s): . Posts: Too much.
MOTM - Feb '13, Feb '14
|
You're fine. You're overthinking this.
|
|
September 4th, 2018, 04:37 PM | #3 |
ninjette.org member
Name: parker
Location: STL
Join Date: Apr 2009 Motorcycle(s): 09 n250, 14 n300, 22 n400 Posts: 98
|
hey welcome.
i too just finished this for a 2nd time on my '09. i also agree you're splitting hairs with regard to the very small degree difference. only thing that concerns me are where are the white paint marks on the cam sprockets? have those been replaced? every photo i've seen shows the exhaust and intake sprockets with white paint marks on the alignment. actually, i recall the intake cam lobe closest to the camera should be at the 4 o'clock position. you sure you're timed correctly? if in doubt, google is your friend. |
|
September 4th, 2018, 06:19 PM | #4 |
"a legend in my own mind"
Name: maverick9611
Location: Augusta,Georgia
Join Date: May 2017 Motorcycle(s): 2015 moto guzzi norge(brownie),2020 aprilia dorsoduro, Posts: A lot.
MOTM - Feb '18
|
actually i had the same problem. go to post #17 and your answer will be there.
https://www.ninjette.org/forums/showthread.php?t=304821
__________________________________________________
"trying not to get old" |
|
September 5th, 2018, 06:22 AM | #5 | ||
ninjette.org newbie
Name: Luiz
Location: Brasilia
Join Date: Sep 2018 Motorcycle(s): Ninja 250R Posts: 7
|
I think you're right. As a perfectionist, I tend to overthink a lot. This is a hell to me, since I'm always afraid to mess the car/bike I'm working. Thanks for the reply
Quote:
Also, they're timed just like this: The EX mark on the exhaust cam to the outer left and the IN mark on the inlet cam to the outer right. The crank is at the 2T mark. Quote:
|
||
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
valve timing question | maverick9611 | 2008 - 2012 Ninja 250R Tech Talk | 17 | October 17th, 2017 10:21 AM |
adjustable camshaft timing how to. | Racer x | 2008 - 2012 Ninja 250R Tech Talk | 84 | July 17th, 2016 04:29 PM |
How to adjust the camshaft timing ? | juliusmichaelhonrada | 1986 - 2007 Ninja 250R Tech Talk | 64 | July 9th, 2016 11:50 AM |
camshaft profiles | micoulisninja | 2008 - 2012 Ninja 250R Tech Talk | 30 | February 12th, 2014 04:01 AM |
Timing Question | diablo250 | 2008 - 2012 Ninja 250R Tech Talk | 8 | April 10th, 2010 10:24 PM |
Thread Tools | |
|
|