Welcome to the WRR/X Forum
Would you like to react to this message? Create an account in a few clicks or log in to continue.
Welcome to the WRR/X Forum

A place to share your passion for the WR250R/X!
 
HomeHome  Latest imagesLatest images  SearchSearch  RegisterRegister  Log inLog in  
WR250R/X Forum

 

 Those of the Athena 290 persuasion...

Go down 
+2
germanwr250r
BuilderBob
6 posters
AuthorMessage
BuilderBob

BuilderBob



Those of the Athena 290 persuasion... Empty
PostSubject: Those of the Athena 290 persuasion...   Those of the Athena 290 persuasion... EmptyThu Dec 29, 2011 7:25 pm

...check your head bolts.

Son flies in from CA for the Holidays. Son is a motorcycle dude (has a KTM & Duc). Give him the key to the WR and tell him that it is his transportation while he is here.

So far, the X has been dumped once on pavement. Fortunately, only the right handguard was affected, but wait, the formerly solidly mounted mirrors are now loose as well. No problem. A little loctite will fix it.

He's hell on wheels. Throttle pinned wherever he goes. Might have been too much for the stock torque specs to take with the high-compression Big-bore kit installed.

I have oil seeping from the head gasket. I also have oil weeping from the cylinder base gasket. Checking the oil level today, I thought for sure that with all of that oil seeping out through the gaskets, it must be low, but I was mistaken. Upon inspection, the oil level completely covered the sight glass. Hmmm, that's odd, it was at the top line a couple of days ago. :hmmm:

Decide to drain the oil. Definitely more coming out than I put in. Finished draining, I give it the sniff test. No mistaking the odor of $3.77/gal 93 octane (with 10% ethanol) gasoline.

So, I am leaking at all of the joints, and raw fuel is making it past the head gasket into the lube system. Obviously, my next step will be to re-torque the head, and I'm hoping that will fix it, but I'm doubtful. I'm fairly certain that all of those hot gases passing across the head gasket have already damaged it.

Oh well. Thumper Racing kit coming sometime in January.
Back to top Go down
germanwr250r





Those of the Athena 290 persuasion... Empty
PostSubject: Re: Those of the Athena 290 persuasion...   Those of the Athena 290 persuasion... EmptyFri Mar 23, 2012 3:40 am

Can't we intall the big bore kit with the Oem-gaskets? The high compression comes from the smaller Athena Cylinderhead gasket(!?) If i install the oem gasket with the kit, the compression schould be only 11,8:1 (stock)...

I have the 290kit here, but i am afraid of the high comprssion, so i didnt install it yet...

Have anyone install the kit with the oemgasket??
Back to top Go down
YZEtc

YZEtc



Those of the Athena 290 persuasion... Empty
PostSubject: Re: Those of the Athena 290 persuasion...   Those of the Athena 290 persuasion... EmptyFri Mar 23, 2012 4:50 am

Don't know how you can use the OEM (stock) head gasket with a big-bore kit.
Back to top Go down
millert85





Those of the Athena 290 persuasion... Empty
PostSubject: Re: Those of the Athena 290 persuasion...   Those of the Athena 290 persuasion... EmptyFri Mar 23, 2012 9:59 am

YZEtc wrote:
Don't know how you can use the OEM (stock) head gasket with a big-bore kit.

sharp scissors ;)
Back to top Go down
germanwr250r





Those of the Athena 290 persuasion... Empty
PostSubject: Re: Those of the Athena 290 persuasion...   Those of the Athena 290 persuasion... EmptySat Apr 21, 2012 4:21 am

Sorry i mean the cylinder-base-gasket.
Back to top Go down
NihonWRX





Those of the Athena 290 persuasion... Empty
PostSubject: Re: Those of the Athena 290 persuasion...   Those of the Athena 290 persuasion... EmptyThu Apr 26, 2012 1:38 am

The original post does not make sense. The fuel is injected and burnt. I can understand fuel in the oil from a
carbed bike ( can happen when parked and engine is off ), but how the hell does it get there in an injected bike
unless the injector is leaking when the bike is not running? Also, to get a noticeable amount of fuel in the oil......
means quite a bit of fuel.

I ran an Athena kit on my DRZ400 and hammered that bike on the circuit and street and off-road. The bike
had a multi layer base gasket which I halved, so i was running about 12.8:1 I find it hard to believe that a properly
torqued cylinder/head with properly installed gaskets would leak, no matter the hammering it got, unless from a
crash.

Back to top Go down
BuilderBob

BuilderBob



Those of the Athena 290 persuasion... Empty
PostSubject: Re: Those of the Athena 290 persuasion...   Those of the Athena 290 persuasion... EmptyThu Apr 26, 2012 5:40 am

NihonWRX wrote:
The original post does not make sense. The fuel is injected and burnt. I can understand fuel in the oil from a
carbed bike ( can happen when parked and engine is off ), but how the hell does it get there in an injected bike
unless the injector is leaking when the bike is not running? Also, to get a noticeable amount of fuel in the oil......
means quite a bit of fuel.

I ran an Athena kit on my DRZ400 and hammered that bike on the circuit and street and off-road. The bike
had a multi layer base gasket which I halved, so i was running about 12.8:1 I find it hard to believe that a properly
torqued cylinder/head with properly installed gaskets would leak, no matter the hammering it got, unless from a
crash.

I can explain it for you. During the compression cycle, the raw fuel/air mixture is being pushed past the the gasket am into the lube system. Some of it may also be going into the cooling system. I haven't checked that yet.

You mentioned that you can't believe that a properly torqued head would leak. Well, there you go. It appears that it was not properly torqued.

No to worry though. This has provided me with the perfect excuse to send the head off for a valve job and porting. Got it back yesterday, so the X will be back on the road soon.
Back to top Go down
Arkmage





Those of the Athena 290 persuasion... Empty
PostSubject: Re: Those of the Athena 290 persuasion...   Those of the Athena 290 persuasion... EmptyThu Apr 26, 2012 9:29 am

BuilderBob wrote:
This has provided me with the perfect excuse to send the head off for a valve job and porting. Got it back yesterday, so the X will be back on the road soon.

I expect to hear some feedback on the head mods. I think you're the first person to get the head ported on the forum.
Back to top Go down
BuilderBob

BuilderBob



Those of the Athena 290 persuasion... Empty
PostSubject: Re: Those of the Athena 290 persuasion...   Those of the Athena 290 persuasion... EmptyThu Apr 26, 2012 11:58 am

Arkmage wrote:
BuilderBob wrote:
This has provided me with the perfect excuse to send the head off for a valve job and porting. Got it back yesterday, so the X will be back on the road soon.

I expect to hear some feedback on the head mods. I think you're the first person to get the head ported on the forum.

I'll definitely post up on my progress and impressions. Gonna have it dyno'ed after the break-in, so we'll see what the old X is capable of.
Back to top Go down
Arkmage





Those of the Athena 290 persuasion... Empty
PostSubject: Re: Those of the Athena 290 persuasion...   Those of the Athena 290 persuasion... EmptyThu Apr 26, 2012 4:06 pm

BuilderBob wrote:
Arkmage wrote:
BuilderBob wrote:
This has provided me with the perfect excuse to send the head off for a valve job and porting. Got it back yesterday, so the X will be back on the road soon.

I expect to hear some feedback on the head mods. I think you're the first person to get the head ported on the forum.

I'll definitely post up on my progress and impressions. Gonna have it dyno'ed after the break-in, so we'll see what the old X is capable of.

I am curious at what point the stock cams become a limitation... I'm sure you'll have reached that point with your list of mods. The dyno will be interesting.
Back to top Go down
BuilderBob

BuilderBob



Those of the Athena 290 persuasion... Empty
PostSubject: Re: Those of the Athena 290 persuasion...   Those of the Athena 290 persuasion... EmptyThu Apr 26, 2012 4:58 pm

Arkmage wrote:
I am curious at what point the stock cams become a limitation... I'm sure you'll have reached that point with your list of mods. The dyno will be interesting.

Well, I don't know about the cams' limitations, but I know I will have reached mine! LOL I hope to never go into this motor again.
Back to top Go down
Arkmage





Those of the Athena 290 persuasion... Empty
PostSubject: Re: Those of the Athena 290 persuasion...   Those of the Athena 290 persuasion... EmptyThu Apr 26, 2012 5:06 pm

heheh... fair enough. I'm kinda of hoping I can squirrel away enough cash for the 306 kit next year, but not sure if I'll see any benefit from the stroker without cams and head work. That would put the price tag over $2K.

If thumper ever releases a dyno we'd be able to learn a lot when comparing it to yours.
Back to top Go down
Sponsored content





Those of the Athena 290 persuasion... Empty
PostSubject: Re: Those of the Athena 290 persuasion...   Those of the Athena 290 persuasion... Empty

Back to top Go down
 
Those of the Athena 290 persuasion...
Back to top 
Page 1 of 1
 Similar topics
-
» Athena what?
» how long does an Athena bb do its job
» ++Athena 290 KIT INSTALLED
» Questiom on Athena BB kit
» Athena get ecu map setup

Permissions in this forum:You cannot reply to topics in this forum
Welcome to the WRR/X Forum :: Technical :: What Broke?-
Jump to: