Fresh top end rebuild. Ran for 5 min now wont start or run? - Suzuki LT-R450 Forum :: LTR450HQ.com
Engine/EFI/Drivetrain Discuss engine, fuel injection, air intake, and drivetrain modifications here

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 12 (permalink) Old 05-23-2010, 06:15 PM Thread Starter
Junior Member
Feedback Score: 0 reviews
 
Join Date: Apr 2010
Posts: 9
View 1bad06ltr450's Photo Gallery(0)
Fresh top end rebuild. Ran for 5 min now wont start or run?

Hi guys, i just rebuilt the top end on my 06 ltr. Used a JE piston and rings, new gaskets, etc. I got the wheeler together and it started right up. I let it idle for a min or two, then idled it up and down the driveway. It ran fine for maybe 5 min then it just stalled out. I thought maybe it had bad gas since it has been sitting a month and a half. drained all the old gas and added new 93. It would start and stall within a few seconds. It did this a few times and now im getting nothing. It sounds like its out of time. Has alittle lope to it now when i crank it over, It also keeps blurping out of the air box. I checked the timing and it still seems to be right on. The valves are still also in spec. What the heck? Before it would crank real hard, to the piont where i had to put the charger on it, now it just spins over fairly easy when trying to start it. Am i overlooking something here? I cant believe there is something wrong with the piston allready. It only ran for maybe a total of 5 min. it is a 12:5-1 piston but alot of guys are using 93 without a problem. I also checked the plug. Any suggestions?
1bad06ltr450 is offline  
Sponsored Links
Advertisement
 
post #2 of 12 (permalink) Old 05-23-2010, 08:34 PM
Senior Member
Feedback Score: 0 reviews
 
jfaubus's Avatar
 
Join Date: Apr 2009
Location: West Fork AR,
Posts: 284
View jfaubus's Photo Gallery(0)
I would check the timing again just to make sure.

06 LTR- Pro Armor Nerfs, G- force rear axle, Alba parking brake block off, alba case saver, Motoworks full exhaust , Yoshi CRBM, Pro Taper Profile Clutch Perch, Pro Design air filter, Fasst Flexx bars , Pro taper grips,
jfaubus is offline  
post #3 of 12 (permalink) Old 05-24-2010, 05:54 AM Thread Starter
Junior Member
Feedback Score: 0 reviews
 
Join Date: Apr 2010
Posts: 9
View 1bad06ltr450's Photo Gallery(0)
Cam gear spun?

I double checked the timing again this am. The Gears are still lined up right where they should be with the T on the flywheel. BUT the cam lobes are suppose to be around 10 o clock and 2 o clock position. The exhaust cam is in the 10 position but the intake cam is in a 5 o clock position. At first i thought the cam chain jumped but the gears are still lined up and im still 15 pins on the chain. The lobes were in the 10 and 2 when i put it together so now what happend?? Did the cam gear spin on the cam? Anyone had this issue? I saw a post similar to this before but i never saw what the outcome was. Im thinking im going to get a new intake cam i guess.
1bad06ltr450 is offline  
post #4 of 12 (permalink) Old 05-24-2010, 06:07 AM
Super Moderator
Premium Member
Feedback Score: 2 reviews
 
CQR's Avatar
 
Join Date: Nov 2006
Location: Denver, CO
Posts: 31,636
View CQR's Photo Gallery(1)
Sounds like the cam spun. Pop off the cam caps and see if the head is junk. Usually this happens from over torquing cam and the cam seizing in the journals.

Four (4) '06 LTR450's, '16 Beta 300RR, '09 CRF150RB, '14 Outlander 650, 16 Beta X trainer, '96 Kodiak, Laeger Trx500


canyontackfeed.com
www.morrisoncarworks.com
www.sodalakestable.com
CQR is offline  
post #5 of 12 (permalink) Old 05-24-2010, 07:34 AM Thread Starter
Junior Member
Feedback Score: 0 reviews
 
Join Date: Apr 2010
Posts: 9
View 1bad06ltr450's Photo Gallery(0)
Omg. How would i be able to tell if the head is junk? Look for scoring where the cam rides? My damn torqe wench must not be acurate i guess.
1bad06ltr450 is offline  
post #6 of 12 (permalink) Old 05-24-2010, 07:52 AM
Senior Member
Feedback Score: 4 reviews
 
NWI_#73's Avatar
 
Join Date: Nov 2007
Location: Lafayette, Indiana
Posts: 14,129
View NWI_#73's Photo Gallery(0) Send a message via AIM to NWI_#73
Send a message via AIM to NWI_#73
Did you torque them to 7 ft-lbs?

07' LTR450 - White
51.7whp/34.7tq
11/23/07

2011 Sponsors: Moto-Xperts, Rath Racing, Fly, Quadtech, DWT, Gaerne Boot Co., Sunstar Sprockets, Smith Optics, Ssi Decals & Fox Shox

CRBM - Rath Bumper - 1st ever White junkie fibered gascap - QT beak - Cernics starter button - Gunnar Killswitch - Yosh throttlebody plug - Precision Stabilizer - MXP tuned rear shock - PC III - FUELATV intake - 13t CS Sprocket - Walsh e-brake blockoff - Junkie relocated dummy lights - Moose case saver - Quadtech MX low seat - ATP 12.5:1 piston - Hotcam intake cam - MXP P/P head - DWT rokout & G2 rims - Goldspeed SX fronts - Goldspeed MXR rears - RPM Dominator II Axle - Moto-Xperts Graphics - Houser +0 Stem - SSi Numberplates - Fox Evols Gen 2 - Houser Slicast A-arms - MXP exhaust - Fly Racing CR Hi bars - Rath Signature Series Nerf Bars

Follow my new Tech review blog MyiTechGadgets
Follow me on twitter @MyiTechGadgets
NWI_#73 is offline  
post #7 of 12 (permalink) Old 05-24-2010, 08:00 AM Thread Starter
Junior Member
Feedback Score: 0 reviews
 
Join Date: Apr 2010
Posts: 9
View 1bad06ltr450's Photo Gallery(0)
i thought i did but i was using a older torque wrench so it probably isnt the most acurate. I guess i didnt realize how seriuos it was for them caps to be excact. I never had this issue before. Now i dont know what to do. It only ran for maybe 5 min but the way my luck has ran lately the head will be junk. I allready know i will need a cam. Is there any hope for fixing the head on my own?
1bad06ltr450 is offline  
post #8 of 12 (permalink) Old 05-24-2010, 09:09 AM
Senior Member
Feedback Score: 1 reviews
 
Baracudaaa's Avatar
 
Join Date: Mar 2006
Location: Corona, CA
Posts: 1,316
View Baracudaaa's Photo Gallery(0)
Dont feel bad, there are a bunch of us who did the same thing.















Bad part, get ready to drop about $700 on new cams, head work, and gaskets.

'06 LTR
Yoshi RS5/PIM--FUEL airbox--Kenda--Bling Star--Evol/Podium X--CCP Stabilizer--Houser+1--Tag 2s'--Streamline--HotCams--CP 13.1--Some cool stickers n' chit

D37 GP/AMA SoCal MX racer #Q3 Vet Expert 2011
Baracudaaa is offline  
post #9 of 12 (permalink) Old 06-16-2010, 06:30 PM Thread Starter
Junior Member
Feedback Score: 0 reviews
 
Join Date: Apr 2010
Posts: 9
View 1bad06ltr450's Photo Gallery(0)
Got her going!!

Hey guys, just an update. I bought a new intake cam after my experience with overtightening the cam holders, and spining the gear on the intake cam. The exhaust cam was fine. Installed both cams, and torqued it down. It runs great. I have about 5 hr on it now and seems good to go. Just alittle incuregment for the guys out there with the same issue. You may get away without replacing the head. Allthogh i only ran mine for maybe 4 min idleing when the cam locked up. If you lock it up when your ripping on it, well that may not go so well.
1bad06ltr450 is offline  
post #10 of 12 (permalink) Old 06-19-2010, 01:09 AM
Senior Member
Feedback Score: 0 reviews
 
Join Date: Aug 2008
Location: las vegas
Posts: 348
View shrimp2's Photo Gallery(0)
i overturned my cam holders, bought new ones put it all back together and now the thing doesnt start and hardly wont hand turn over. my motor seems to be done /:

2006 ltr450
hmf full exhaust
13t front sprocket
velocity intake
dobeck tfi
um nerf bars
pro taper cr high big bars
20x10x8 7 haulers
alba bumper
ac grab bar
fuel atv graphics and seat cover
shrimp2 is offline  
Reply

  Lower Navigation
Go Back   Suzuki LT-R450 Forum :: LTR450HQ.com > LTR450 Tech Discussion > Engine/EFI/Drivetrain

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Suzuki LT-R450 Forum :: LTR450HQ.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
HELP!!! 2006 LTR wont start? engine turns but wont fire quinones0506 Engine/EFI/Drivetrain 13 05-01-2017 02:13 PM
just finished rebuild..wont spin overr lucky700r Engine/EFI/Drivetrain 40 02-27-2010 05:13 AM
start button wont start bike ltrbert12 Engine/EFI/Drivetrain 9 02-18-2010 02:51 PM
Ltr Wont Start waanimal Engine/EFI/Drivetrain 5 10-09-2008 10:02 AM
New Top End, Wont Start!! trynrunme Engine/EFI/Drivetrain 5 06-17-2008 10:21 AM

Posting Rules  
You may post new threads
You may 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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome