|
Next: abpm....
|
| Author |
Message |
External
Since: Jan 14, 2004
Posts: 436
|
(Msg. 1) Posted: Tue Mar 02, 2004 3:49 pm
Post subject: CRF valve clearance check
Archived from groups: rec>motorcycles>dirt (more info?)
|
|
|
My CRF450 seemed to be losing compression although it runs fine. Some
suggested I check valve clearances. All the valves were within spec but the
decompressor was 0.020" instead of 0.025" so I loosened it and adjusted to
spec. Go figure. The valves clearances seemed a bit snug. Apparently, the
valve train *tightens* up as it wears.
What's with the wacky spark plug?
My rear spokes were loose too.
The inside of the rear tire was all chewed up. I didn't remove the rubber
band thingy and replace with duct tape when it was new so it was full of
dirt. It ruined the tire and the tube.
That is all. |
|
| Back to top |
|
 | |
External
Since: Nov 03, 2003
Posts: 284
|
(Msg. 2) Posted: Tue Mar 02, 2004 10:06 pm
Post subject: Re: CRF valve clearance check [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
|
|
|
In article <c22sdr$1n7c5v$1@ID-132159.news.uni-berlin.de>, "dlevy"
<dlevy.TakeThisOut@pobox.com> wrote:
> My CRF450 seemed to be losing compression although it runs fine. Some
> suggested I check valve clearances. All the valves were within spec but the
> decompressor was 0.020" instead of 0.025" so I loosened it and adjusted to
> spec. Go figure. The valves clearances seemed a bit snug. Apparently, the
> valve train *tightens* up as it wears.
>
> What's with the wacky spark plug?
>
> My rear spokes were loose too.
>
> The inside of the rear tire was all chewed up. I didn't remove the rubber
> band thingy and replace with duct tape when it was new so it was full of
> dirt. It ruined the tire and the tube.
>
> That is all.
Have you replaced the combo oil filter/water pump cover that the geniuses
at Honda came up with? That has got to be one of the dumbest things I've
seen on a "state of the art" bike.
I use both duct tape and the rubber band thingy.
--
Charles
'99 YZF600R
'99 YZ250<!-- ~MESSAGE_AFTER~ --> |
|
| Back to top |
|
| |
External
Since: Jan 14, 2004
Posts: 436
|
(Msg. 3) Posted: Tue Mar 02, 2004 10:06 pm
Post subject: Re: CRF valve clearance check [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
|
|
|
I haven't replaced that yet but I did replace the other side (ignition
cover)..... I can only imagine....
The end clutch fiber plates are different from the middle clutch fiber
plates. My manual said something about yellow paint marks on the end plates
(or something like that). Hell, I didn't see any marks however I dutifully
installed the plates with the different part number on the ends. I could
not see any difference.
Hey, I ain't complaining though. Wacky as it is, this sumbitch *works*.
Better than my 99 YZ250!
"Charles Stembridge" <chNOstem DeleteThis @mindSPAMspring.com> wrote in message
news:chNOstem-0203041308160001@user-38ldsss.dialup.mindspring.com...
><snip>
> Have you replaced the combo oil filter/water pump cover that the geniuses
> at Honda came up with? That has got to be one of the dumbest things I've
> seen on a "state of the art" bike.
><snip>
> --
> Charles
> '99 YZF600R
> '99 YZ250<!-- ~MESSAGE_AFTER~ --> >> Stay informed about: CRF valve clearance check |
|
| Back to top |
|
| |
External
Since: Jan 09, 2004
Posts: 258
|
(Msg. 4) Posted: Tue Mar 02, 2004 10:06 pm
Post subject: Re: CRF valve clearance check [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
|
|
|
On Tue, 02 Mar 2004 21:06:05 GMT, chNOstem.DeleteThis@mindSPAMspring.com (Charles
Stembridge) spewed forth:
>Have you replaced the combo oil filter/water pump cover that the geniuses
>at Honda came up with? That has got to be one of the dumbest things I've
>seen on a "state of the art" bike.
You sure you aren't thnking of the Kawazuki 250? On the Honda, the
water pump is ont eh right side and the oil filter is on teh left
side.
MX Tuner<!-- ~MESSAGE_AFTER~ --> >> Stay informed about: CRF valve clearance check |
|
| Back to top |
|
| |
External
Since: Feb 18, 2004
Posts: 294
|
(Msg. 5) Posted: Tue Mar 02, 2004 10:06 pm
Post subject: Re: CRF valve clearance check [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
|
|
|
My crf ain't built like that, you must have seen one built on a friday
afternoon!
>
>><snip>
>>Have you replaced the combo oil filter/water pump cover that the geniuses
>>at Honda came up with? That has got to be one of the dumbest things I've
>>seen on a "state of the art" bike.
>><snip>
>>--
>>Charles
>>'99 YZF600R
>>'99 YZ250
>
>
>
--
Joe
CRF450 04
CRF250 04
CRF230 03
XR500 85
XR80 82
Watching my 401k going down the driveway! Next time my kids roost me,
I'm gonna gonna......where did they go!<!-- ~MESSAGE_AFTER~ --> >> Stay informed about: CRF valve clearance check |
|
| Back to top |
|
| |
External
Since: Jun 18, 2003
Posts: 255
|
(Msg. 6) Posted: Tue Mar 02, 2004 10:27 pm
Post subject: Re: CRF valve clearance check [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
|
|
|
"dlevy" <dlevy.RemoveThis@pobox.com> sez:
> My CRF450 seemed to be losing compression although it runs fine. Some
> suggested I check valve clearances. All the valves were within spec but
the
> decompressor was 0.020" instead of 0.025" so I loosened it and adjusted to
> spec. Go figure. The valves clearances seemed a bit snug. Apparently,
the
> valve train *tightens* up as it wears.
The titanium intake valves wear pretty fast where they contact the seats in
the head and that wear causes them to recess into the head reducing your
clearance between the valve/shims and the cam lobes.
Good wrenchin' to ya,
VLJ
--<!-- ~MESSAGE_AFTER~ --> >> Stay informed about: CRF valve clearance check |
|
| Back to top |
|
| |
External
Since: Nov 03, 2003
Posts: 284
|
(Msg. 7) Posted: Tue Mar 02, 2004 11:54 pm
Post subject: Re: CRF valve clearance check [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
|
|
|
In article <c22ved$1o7no9$1@ID-132159.news.uni-berlin.de>, "dlevy"
<dlevy.DeleteThis@pobox.com> wrote:
> I haven't replaced that yet but I did replace the other side (ignition
> cover)..... I can only imagine....
>
> The end clutch fiber plates are different from the middle clutch fiber
> plates. My manual said something about yellow paint marks on the end plates
> (or something like that). Hell, I didn't see any marks however I dutifully
> installed the plates with the different part number on the ends. I could
> not see any difference.
>
> Hey, I ain't complaining though. Wacky as it is, this sumbitch *works*.
> Better than my 99 YZ250!
I should hope so! Give 'em 4 or 5 years, they're bound to catch up.
--
Charles
'99 YZF600R
'99 YZ250<!-- ~MESSAGE_AFTER~ --> >> Stay informed about: CRF valve clearance check |
|
| Back to top |
|
| |
External
Since: Feb 27, 2004
Posts: 13
|
(Msg. 8) Posted: Wed Mar 03, 2004 4:38 am
Post subject: Re: CRF valve clearance check [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
|
|
|
vlj wrote:
> "dlevy" <dlevy.TakeThisOut@pobox.com> sez:
>
>
>>My CRF450 seemed to be losing compression although it runs fine. Some
>>suggested I check valve clearances. All the valves were within spec but
>
> the
>
>>decompressor was 0.020" instead of 0.025" so I loosened it and adjusted to
>>spec. Go figure. The valves clearances seemed a bit snug. Apparently,
>
> the
>
>>valve train *tightens* up as it wears.
>
>
> The titanium intake valves wear pretty fast where they contact the seats in
> the head and that wear causes them to recess into the head reducing your
> clearance between the valve/shims and the cam lobes.
>
> Good wrenchin' to ya,
> VLJ
> --
>
>
Apparently, the Kibblewhite intake valves are the hot setup to resolve
the CRF's intake valve self destruction. Sounds like one of those fixes
you should do before you have to.<!-- ~MESSAGE_AFTER~ --> >> Stay informed about: CRF valve clearance check |
|
| Back to top |
|
| |
External
Since: Nov 03, 2003
Posts: 284
|
(Msg. 9) Posted: Wed Mar 03, 2004 5:04 am
Post subject: Re: CRF valve clearance check [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
|
|
|
In article <gq7a40hshde86q5c92822i0i26rlo98aod.TakeThisOut@4ax.com>, MX Tuner wrote:
> On Tue, 02 Mar 2004 21:06:05 GMT, chNOstem.TakeThisOut@mindSPAMspring.com (Charles
> Stembridge) spewed forth:
>
> >Have you replaced the combo oil filter/water pump cover that the geniuses
> >at Honda came up with? That has got to be one of the dumbest things I've
> >seen on a "state of the art" bike.
>
> You sure you aren't thnking of the Kawazuki 250? On the Honda, the
> water pump is ont eh right side and the oil filter is on teh left
> side.
>
>
> MX Tuner
Yeah, it is the RMZ/KXF. Don't know why I thought it was the crf. I was
surprized no one was complaining about it. A thousand apologies to Honda
geniuses.
--
Charles
'99 YZF600R
'99 YZ250<!-- ~MESSAGE_AFTER~ --> >> Stay informed about: CRF valve clearance check |
|
| Back to top |
|
| |
External
Since: Nov 03, 2003
Posts: 284
|
(Msg. 10) Posted: Wed Mar 03, 2004 5:06 am
Post subject: Re: CRF valve clearance check [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
|
|
|
In article <j9GdnX5al7yfvtjdRVn-uw DeleteThis @scnresearch.com>, Joemomma
<cupcake DeleteThis @molalla.net> wrote:
> My crf ain't built like that, you must have seen one built on a friday
> afternoon!
Yeah, and in the Suzuki plant too. oops.
> >
> >><snip>
> >>Have you replaced the combo oil filter/water pump cover that the geniuses
> >>at Honda came up with? That has got to be one of the dumbest things I've
> >>seen on a "state of the art" bike.
> >><snip>
> >>--
> >>Charles
> >>'99 YZF600R
> >>'99 YZ250
> >
> >
> >
--
Charles
'99 YZF600R
'99 YZ250<!-- ~MESSAGE_AFTER~ --> >> Stay informed about: CRF valve clearance check |
|
| Back to top |
|
| |
External
Since: Jan 14, 2004
Posts: 436
|
(Msg. 11) Posted: Wed Mar 03, 2004 9:33 am
Post subject: Re: CRF valve clearance check [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
|
|
|
I can't find anything on their website.
Can you point me to more information?
Thanks!
"Tim R." <spam-tkr.DeleteThis@comcast.net> wrote in message
news:yqc1c.166873$jk2.612201@attbi_s53...
><snip>
> Apparently, the Kibblewhite intake valves are the hot setup to resolve
> the CRF's intake valve self destruction. Sounds like one of those fixes
> you should do before you have to.
><!-- ~MESSAGE_AFTER~ --> >> Stay informed about: CRF valve clearance check |
|
| Back to top |
|
| |
External
Since: Jun 26, 2003
Posts: 122
|
(Msg. 12) Posted: Wed Mar 03, 2004 12:27 pm
Post subject: Re: CRF valve clearance check [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
|
|
|
Hi!
On Tue, 02 Mar 2004 21:27:07 GMT, "vlj" <v.TakeThisOut@l.j> wrote :
>The titanium intake valves wear pretty fast where they contact the seats in
>the head and that wear causes them to recess into the head reducing your
>clearance between the valve/shims and the cam lobes.
So buying a new *pre-titanium* YZ426 was a wise decision - although I
didn't know that then.
BTW: I own the scoot for a year or so, checked the valve clearance three
times since that (after breaking it in and then after 2-3 oil changes).
No noticeably wear. All valves were right on spot. So probably no valve
stuff for this year.
Seems to be a big plus for the Yam even if it is considered a little
"old fashioned" without shiny aluminum deltabox frame and the like.
Volker<!-- ~MESSAGE_AFTER~ --> >> Stay informed about: CRF valve clearance check |
|
| Back to top |
|
| |
External
Since: Jun 18, 2003
Posts: 255
|
(Msg. 13) Posted: Wed Mar 03, 2004 5:21 pm
Post subject: Re: CRF valve clearance check [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
|
|
|
"dlevy" <dlevy.RemoveThis@pobox.com> sez:
> I can't find anything on their website.
> Can you point me to more information?
See <a style='text-decoration: underline;' href="http://www.off-road.com/dirtbike/projects/crf450/kibblewhite/" target="_blank">http://www.off-road.com/dirtbike/projects/crf450/kibblewhite/</a> ...
Good ridin' to ya,
VLJ
--
If it has tits or tires, its gonna be trouble.<!-- ~MESSAGE_AFTER~ --> >> Stay informed about: CRF valve clearance check |
|
| Back to top |
|
| |
External
Since: Jan 14, 2004
Posts: 436
|
(Msg. 14) Posted: Wed Mar 03, 2004 5:21 pm
Post subject: Re: CRF valve clearance check [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
|
|
|
Thanks.
I just checked the clearance and all is fine so I'll sit tight for a while.
"vlj" <v RemoveThis @l.j> wrote in message
news:_Bn1c.68117$vn.196992@sea-read.news.verio.net...
> "dlevy" <dlevy RemoveThis @pobox.com> sez:
>
> > I can't find anything on their website.
> > Can you point me to more information?
>
> See <a style='text-decoration: underline;' href="http://www.off-road.com/dirtbike/projects/crf450/kibblewhite/" target="_blank">http://www.off-road.com/dirtbike/projects/crf450/kibblewhite/</a> ...
>
> Good ridin' to ya,
> VLJ
> --
> If it has tits or tires, its gonna be trouble.
>
><!-- ~MESSAGE_AFTER~ --> >> Stay informed about: CRF valve clearance check |
|
| Back to top |
|
| |
External
Since: Jun 29, 2003
Posts: 437
|
(Msg. 15) Posted: Wed Mar 03, 2004 11:02 pm
Post subject: Re: CRF valve clearance check [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
|
|
|
Give it time, the valve will wear. When they do be ready to order some new
shims. I've got a pretty decent collection growing here. When you get to the
1.2mm that is as thin as you can go and its valve replacement time.
The spark plug.... IFR8H11. Shop around and you'll find it for $15 instead
of $25. I talked with NGK about it and the reason its expensive is that
Honda is the only person importing the plug. Once the plug is released and
available for aftermarket sale, it will be more reasonably priced.
Rear spokes will get loose for awhile. Tighten them up.
Putting numberplate backgrounds on the exhaust side is a pain in the ass. Be
paitient, have a heat gun handy, and make sure no women or children with
sensitive ears are around.
"dlevy" <dlevy.DeleteThis@pobox.com> wrote in message
news:c22sdr$1n7c5v$1@ID-132159.news.uni-berlin.de...
> My CRF450 seemed to be losing compression although it runs fine. Some
> suggested I check valve clearances. All the valves were within spec but
the
> decompressor was 0.020" instead of 0.025" so I loosened it and adjusted to
> spec. Go figure. The valves clearances seemed a bit snug. Apparently,
the
> valve train *tightens* up as it wears.
>
> What's with the wacky spark plug?
>
> My rear spokes were loose too.
>
> The inside of the rear tire was all chewed up. I didn't remove the rubber
> band thingy and replace with duct tape when it was new so it was full of
> dirt. It ruined the tire and the tube.
>
> That is all.
>
><!-- ~MESSAGE_AFTER~ --> >> Stay informed about: CRF valve clearance check |
|
| Back to top |
|
| |
FAQ
Profile
Private Messages
Log in
