March 18th, 2019, 11:22 AM | #1 |
ninjette.org newbie
Name: Niklas
Location: California
Join Date: Mar 2019 Motorcycle(s): 2006 ninja Posts: 9
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2006 Valve clearance
Hey there dear friends,
I am starting to go insane over my 2006 Ninja 250R. I re-did my valve clearings now a couple of times, but still feel like I have symptoms of too tight clearances (rough idle, stall at 5000-6000 rpms, occasional backfire). I did the adjustment according to faq.ninja250.org (here), i.e. Exhaust: 0.11mm - 0.16mm Intake: 0.08mm - 0.13mm I am however also in possession (e.g. from here) of a service manual for the 2008 Ninja 250R, which states. Exhaust: 0.22 ∼ 0.29 mm Intake: 0.15 ∼ 0.24 mm I spent hours on the internet trying to find the specific ranges for the 2006, but seem to be approaching this search wrong. I would appreciate any kind o help! Thanks a lot |
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March 18th, 2019, 02:59 PM | #2 |
ninjette.org certified postwhore
Name: Roger
Location: Mitchell, South Dakota
Join Date: Apr 2014 Motorcycle(s): 1978 Z1R, 1999 EX250 Posts: A lot.
MOTY - 2018, MOTM - Oct '16
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there's a sticker on the inside of the side cover (I think it's the left one) with the specs.
PS; welcome to the site
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March 18th, 2019, 03:02 PM | #3 |
ninjette.org newbie
Name: Niklas
Location: California
Join Date: Mar 2019 Motorcycle(s): 2006 ninja Posts: 9
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Thank you so much for the reply! Side cover as in fairings? Unfortunately I got my bike completely naked. No covers no fairings.
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March 18th, 2019, 03:11 PM | #4 |
ninjette.org certified postwhore
Name: Roger
Location: Mitchell, South Dakota
Join Date: Apr 2014 Motorcycle(s): 1978 Z1R, 1999 EX250 Posts: A lot.
MOTY - 2018, MOTM - Oct '16
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March 18th, 2019, 03:22 PM | #5 |
ninjette.org certified postwhore
Name: Roger
Location: Mitchell, South Dakota
Join Date: Apr 2014 Motorcycle(s): 1978 Z1R, 1999 EX250 Posts: A lot.
MOTY - 2018, MOTM - Oct '16
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the newgen (2008 and on) 250s have cams on shims, (no rockers), the pregens (up to and including 2007) have adjustable rockers.
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March 18th, 2019, 03:25 PM | #6 |
ninjette.org newbie
Name: Niklas
Location: California
Join Date: Mar 2019 Motorcycle(s): 2006 ninja Posts: 9
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awesome. Thank you so much. I take it this is from a Ninja 2002 (EX250-F16)? And then assume same specs are valid for my 2006.
If that is the case, my valve gaps are within specs. I guess the symptoms I have been blaming on the valves so far are actually carb related then. Off to a new adventure then! |
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March 18th, 2019, 03:29 PM | #7 |
ninjette.org newbie
Name: Niklas
Location: California
Join Date: Mar 2019 Motorcycle(s): 2006 ninja Posts: 9
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Wait. Ok. Now I am incredibly confused.
There seems to be something very fishy going on with my bike. The title says it is 2006. (With Frame number Range: JKAEXMF1*6DA*). But the bike DOES have cams on shims, not rockers! I get the feeling that a previous owner might have switched engines! Holy cow. |
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March 18th, 2019, 03:52 PM | #8 |
ninjette.org newbie
Name: Niklas
Location: California
Join Date: Mar 2019 Motorcycle(s): 2006 ninja Posts: 9
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ok. I cannot stop laughing. Suspicions confirmed. The tile states Engine number: EX250EEA21*. According to faq.ninja250.org, that probably is a 2006 or 2007 engine.
However, the number engraved on the engine is EX250JEA3* which seems to be 2009 or 2010? Would that engine have the same clearances as the 2008 engine, i.e. Exhaust: 0.22 ∼ 0.29 mm Intake: 0.15 ∼ 0.24 mm |
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March 18th, 2019, 04:58 PM | #9 | |
ninjette.org certified postwhore
Name: Roger
Location: Mitchell, South Dakota
Join Date: Apr 2014 Motorcycle(s): 1978 Z1R, 1999 EX250 Posts: A lot.
MOTY - 2018, MOTM - Oct '16
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Quote:
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March 18th, 2019, 05:06 PM | #10 |
ninjette.org newbie
Name: Niklas
Location: California
Join Date: Mar 2019 Motorcycle(s): 2006 ninja Posts: 9
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How interesting! I was riding the bike yesterday and it was bad, but kind of OK. I am surprised it ran at all with the clearances set way out of spec (I guess I set them to the upper limit of the oldgen, which means very lower limit of the newgen).
Cannot wait to set them right and finally have this problem done with! Z1R rider, you are an angel! Thank you so much for figuring this out with me. |
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March 18th, 2019, 05:44 PM | #11 |
ninjette.org certified postwhore
Name: Gordon
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Curious.... when you bought the bike, the Previous Owner didn't advise you of the engine swap?
You're in possession of a shim kit? Did you take notes when you first checked the valves ...the clearances and placement of the size of the shim in each valve location? If so...your notes may prove to save you some time. BTW..."shim under bucket" is the proper nomenclature for the newgen valve system. "Screw and locknut" for the older style.
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gordon@customcarbservices.com Custom Carb Service www.customcarbservices.com |
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March 18th, 2019, 06:15 PM | #12 |
ninjette.org newbie
Name: Niklas
Location: California
Join Date: Mar 2019 Motorcycle(s): 2006 ninja Posts: 9
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PO claimed she only had the bike for a couple of months and never got it running. She seemed a bit over her head with the bike and herself claimed that she bought it from a guy who had no idea what he was doing. ... kids! (this is my first bike, but I didn't go to engineering school for nothing ).
Yeah, I am in possession of shim kit. I also wrote the clearances down, but I might have thrown away the paper ... Luckily, I have done it three times now and I think I have a pretty efficient system down. "Shim under Bucket" and "Screw and Locknut" sound like incredibly appropriate terms. I will remember them. Thank you guys so much. I wish I would have come here earlier!! |
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March 18th, 2019, 06:30 PM | #13 |
ninjette.org certified postwhore
Name: Roger
Location: Mitchell, South Dakota
Join Date: Apr 2014 Motorcycle(s): 1978 Z1R, 1999 EX250 Posts: A lot.
MOTY - 2018, MOTM - Oct '16
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Thanks, I didn't know if they were over or under as I don't have a newer one, just a stable of old ones. My old Z1R's got them on top.
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