ADVrider

Go Back   ADVrider > Bikes > Thumpers
User Name
Password
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 04-02-2013, 11:02 AM   #7621
elsalvadorklr
Beastly Adventurer
 
Joined: Nov 2008
Location: el salvador
Oddometer: 4,076
hey dudes need some quick info before taking the head to the machine shop for a once over

what is the oem freelength of the valves both intake and exhaust. These are kibblehites

2. what would be a tell tale sign my valve seats are the issue? the valves do not appear sunken into the head, but I had zero lash on my valves meaning either they are sinking a bit but not obvious OR the stems are stretching.

3. has anyone had luck getting new seats cut at joe blow machine shop? jajajaa

I might be able to use my oem valves...

thanks

peace
elsalvadorklr is offline   Reply With Quote
Old 04-02-2013, 11:19 AM   #7622
mcma111
Beastly Adventurer
 
mcma111's Avatar
 
Joined: Jul 2007
Location: San Francisco,Ca.
Oddometer: 11,214
You know the stems did not grow in length. Most likely reason for the zero lash is of the parts settling in after getting a heat cycle through them.

But then again maybe not. Shit happens. As your all to aware of.
__________________
Steve in SF

BMW's
58 R26
79 R100s
91 R100gs

87 Harley FXRS-SP ~ 06 KTM 625 SMC ~ 72 Honda CB750/915cc ~ 92 XR600/654cc ~ 95 XR650l/675cc ~ 03 CRF450r ~ 05 CRF450x ~ 02 XR650l/675cc ~ 86 YZ490 ~ 93 YZ80 ~ 93 XR650l Project
mcma111 is online now   Reply With Quote
Old 04-02-2013, 12:23 PM   #7623
elsalvadorklr
Beastly Adventurer
 
Joined: Nov 2008
Location: el salvador
Oddometer: 4,076
well I can prove you wrong at least a bit

my kibllewhite intakes are indeed longer than my oem intakes...fo fidgure

so the stems stretched or?

I can visually see the valves are longer...

the faces are thicker than oem however

so I have my oem valves all of them...

cut seats and install them? orrrrrrrrrrrrrrrr?
elsalvadorklr is offline   Reply With Quote
Old 04-02-2013, 12:29 PM   #7624
deejay_xr
Gnarly Adventurer
 
deejay_xr's Avatar
 
Joined: Mar 2012
Location: Netherlands
Oddometer: 496
Quote:
Originally Posted by Royal Club View Post
got a new headgasket, for myself that is



Stylish
__________________
'87 XR600R, 17's and fully black
deejay_xr is offline   Reply With Quote
Old 04-02-2013, 01:18 PM   #7625
elsalvadorklr
Beastly Adventurer
 
Joined: Nov 2008
Location: el salvador
Oddometer: 4,076
nice helmet!

hey I lost my xr600 manual link soooooooooo

can anyone verify these numbers for me?

intake valve length: 105.79mm
exhaust: 104.34

31/36mm combo oem

thanks
elsalvadorklr is offline   Reply With Quote
Old 04-02-2013, 01:28 PM   #7626
mcma111
Beastly Adventurer
 
mcma111's Avatar
 
Joined: Jul 2007
Location: San Francisco,Ca.
Oddometer: 11,214
I'll try when I get home. About an hour.
__________________
Steve in SF

BMW's
58 R26
79 R100s
91 R100gs

87 Harley FXRS-SP ~ 06 KTM 625 SMC ~ 72 Honda CB750/915cc ~ 92 XR600/654cc ~ 95 XR650l/675cc ~ 03 CRF450r ~ 05 CRF450x ~ 02 XR650l/675cc ~ 86 YZ490 ~ 93 YZ80 ~ 93 XR650l Project
mcma111 is online now   Reply With Quote
Old 04-02-2013, 01:38 PM   #7627
elsalvadorklr
Beastly Adventurer
 
Joined: Nov 2008
Location: el salvador
Oddometer: 4,076
thanks bud

off to the machine shop and a beer run.........................see what they say, maybe the seats are cuttable and I can get away with the oem valves

well see!

couple of errands and whatnot

cheers guys
elsalvadorklr is offline   Reply With Quote
Old 04-02-2013, 03:05 PM   #7628
mcma111
Beastly Adventurer
 
mcma111's Avatar
 
Joined: Jul 2007
Location: San Francisco,Ca.
Oddometer: 11,214
Valve Length

I can't get to my service manuals. Blocked by to much STUFF. I checked my on-line manual and a spec is not given. It really doesn't matter as the screw adjusters take up any slack.

Looking at that manual and your statement that you had zero clearance all the way around could be the source of the stalling.
__________________
Steve in SF

BMW's
58 R26
79 R100s
91 R100gs

87 Harley FXRS-SP ~ 06 KTM 625 SMC ~ 72 Honda CB750/915cc ~ 92 XR600/654cc ~ 95 XR650l/675cc ~ 03 CRF450r ~ 05 CRF450x ~ 02 XR650l/675cc ~ 86 YZ490 ~ 93 YZ80 ~ 93 XR650l Project
mcma111 is online now   Reply With Quote
Old 04-02-2013, 04:44 PM   #7629
beechum1
Beastly Adventurer
 
beechum1's Avatar
 
Joined: Oct 2007
Location: Not home in Tijuana
Oddometer: 7,709
I pmd him the info.
__________________
Rally Moto Kit /// Vendor Thread
Quote:
Originally Posted by flyingdutchman177 View Post
I used to say "one day" a lot. But then I got scared I would wait one day too long. So I am doing it all now
beechum1 is offline   Reply With Quote
Old 04-02-2013, 10:05 PM   #7630
Captain115
Gnarly Adventurer
 
Captain115's Avatar
 
Joined: Jun 2012
Location: Brisbane, Straya
Oddometer: 277
Gaskets!

Ok people, lets talk gaskets!

I need an oversized head gasket because of the 98mm piston,yes? Which Honda don't make.

So I was going to get the Cosmetic top end gasket kit, which comes with the correct sized head and base gaskets.

Rocker cover will be cleaned and Hondabonded, ala Steve's gasket sandwhich method (see here)

Now bottom end: should I go the Cosmetic base gasket kit? Is OEM better?

More importantly, if the kit only contains the side and central crankcase gaskets, why is it more expensive ($47) than buying each of the OEM gaskets separately (total of $38)???

Finally, what's the go with sealant? From what I read, the crankcase gasket go on dry, the base gasket is dry bar some sealant near the central split due to the case, head gasket is dry, rocker cover is sandwiched as mentioned above. Does this sound right?

The sealant on the base gasket near the case split, should is be Hondabond HT? Or just normal Hondabond?

Impart your wisdom other XR owners!

Cheers,

John

Whats a thread without photos? So here's the current spread of the rebuild:


Captain115 screwed with this post 04-02-2013 at 11:03 PM
Captain115 is offline   Reply With Quote
Old 04-02-2013, 10:19 PM   #7631
elsalvadorklr
Beastly Adventurer
 
Joined: Nov 2008
Location: el salvador
Oddometer: 4,076
yamabond, honda bon, etc, great...

for the case splits and grommet exits I have been using mega grey lately by permatex which is abundant down here and does great

the only places you need sealant are

grommets stator and pg
case center gasket at rear where cylinder meets

some manuals say seal cam chain tunnel...

other than that its DRY if using oem equivalent

I have had good luck now using grease on one side and dry on the other side on such gaskets as the clutch cover gasket as it makes resuing much easier

also do NOT use any sealant on head gasket....I have however succesfully use COPPER SPRAY that goes on dry and tacky on 2 head gaskets and they sealed nicely...maybe a small weep but no effect on peroformance and or leak of air.

cheers

best complete gasket rebuild kit can be bouht on EBAY....k and s kit.
elsalvadorklr is offline   Reply With Quote
Old 04-02-2013, 11:48 PM   #7632
RoostMaster
Gnarly Adventurer
 
Joined: Apr 2012
Location: MelbVagas
Oddometer: 223
Quote:
Originally Posted by Royal Club View Post
got a new headgasket, for myself that is



Royal STIG ?
RoostMaster is offline   Reply With Quote
Old 04-03-2013, 03:53 AM   #7633
Royal Club
Gnarly Adventurer
 
Royal Club's Avatar
 
Joined: Jul 2012
Location: The Netherlands
Oddometer: 392
Quote:
Originally Posted by RoostMaster View Post
Royal STIG ?
tbh, I received a free smoked visor with the helmet, just have to pick it up.. so yeah, royal stig it is!

@ gasket story, I used a athena top end set and just mounted it.. 98mm wiseco..

__________________
Royal Club is offline   Reply With Quote
Old 04-03-2013, 04:25 AM   #7634
deejay_xr
Gnarly Adventurer
 
deejay_xr's Avatar
 
Joined: Mar 2012
Location: Netherlands
Oddometer: 496
Quote:
Originally Posted by Captain115 View Post

Whats a thread without photos? So here's the current spread of the rebuild:





Sorry, couldn't resist

You are correct, only a dab of sealant at the crack under the base gasket, I did it front and back.

If OEM is cheaper than Cometic, I'd go with OEM. However if you can get a complete set with seals aswell from K&S or something that might be the way to go.

Like Christian said, never use silicone sealant on your head gasket. From the pictures of your teardown It looked like the PO ignored that one.
__________________
'87 XR600R, 17's and fully black
deejay_xr is offline   Reply With Quote
Old 04-03-2013, 07:12 AM   #7635
elsalvadorklr
Beastly Adventurer
 
Joined: Nov 2008
Location: el salvador
Oddometer: 4,076
gaskets and my rebuild! again! jajajaa

good luck!

so on a side note Im almost doing a rebuild myself and will be reusing some gaskets...

again Ill let you know what works and what doesnt:

stem seals can be reused if you are careful on install and twist while you install...

valve cover gasket if metal can be resused using steves sealant sandwich technique

head gasket can be reused if copper and you anneal or if its laminated and you use some sort of dry copper spray, or aluminum etc..

Ill see when I get her done

ps. my issue was BADLY PITTED (dirt, humid air? saltwater from beach riding? possibly) valve faces and non proper face to seat contact, in other words the valve cutting and grinding performed originally was not up to par...as was what made it worse.

my machinist said that my kbs were not bent or stretched enough to throw away, and said they were still better to fix than my oem ones cause they had more meat on the faces and would stick out more.

anywhoooooooooooooooooooooooooooooooo
elsalvadorklr is offline   Reply With Quote
Reply

Share

Thread Tools Search this Thread
Search this Thread:

.
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


Times are GMT -7.   It's 11:22 PM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2014