BuggyMasters.Com - An On Line Mini Buggy Forum and Go Kart Forum

Go Back   BuggyMasters.Com - An On Line Mini Buggy Forum and Go Kart Forum > Technical Discussions > 150cc GY6 and Under Engine Tech

150cc GY6 and Under Engine Tech GY6 and Smaller Technical Discussion Forum

Reply
 
Thread Tools
  #1  
Old 03-18-2014, 11:04 PM
JERSEYDEVIL's Avatar
JERSEYDEVIL JERSEYDEVIL is offline
Supporting Vendor
 

Join Date: Feb 2011
Location: port charlotte fl
Posts: 831
Default What a factory defect looks like


had a guy find me through ebay, it started when he bought a manual petcock from me last May thinking it would cure what was ailing his motor. he ended up calling me and picking my brain. christmas 2012 he bought a new trailmaster 150XRX. he told me from day 1 that it never seemed to run right. after a few minute of running in fact it would start to run worse. trying to troubleshoot over the phone can be tough especially w/ someone new to the sport. he started asking about what bolton parts that might cure a "rough" running buggy should he buy. we tried an intake in case of a vacuum leak, coil/cdi, carb and i even talked him through adjusting his valves. both of us scratching our heads as the condition never got better. i started wondering if maybe he had a defective head that was affecting the valve train. finally he called me to tell me his kids were on it and it quit. when he went to turn it over the starter would spin but that was it. i told him that maybe the start clutch went. he asked if he pulled the motor and sent it to me would i go through it and try to figure it out, rebuild it and make it a little stouter.
he sent the motor and we bolted it up to the start stand, we went to set it at TDC and noticed the piston wasnt moving. we tore it down to find the rod had pulled itself through the piston. we got the parts rebuilt it put it back up on the stand and fired it up. it ran for maybe 10 minutes and shutdown suddenly by itself. we drained th oil to open it back upto take a look and a few drops came out. we scratched our heads wondering where the oil went. jeff started tearing it down from the right cover till he found something. the passage from the crankcase to the oil pump was block by a paper thin piece of casting . well the customer wasnt nuts. basically whatever oil was in there went around once became trapped in the crankcas and could get back to the oil pump. fortunately we ony hurt the piston and ring and was able to get it back together. the blockage was paper thin, a poke from a screwdriver cured it.
Attached Images
File Type: jpg 017.jpg (26.9 KB, 29 views)
File Type: jpg 018.jpg (32.3 KB, 27 views)
File Type: jpg 021.jpg (28.8 KB, 26 views)
File Type: jpg 022.jpg (36.5 KB, 27 views)
File Type: jpg 044.jpg (45.3 KB, 26 views)
File Type: jpg 045.jpg (29.3 KB, 29 views)
File Type: jpg 047.jpg (39.3 KB, 25 views)
File Type: jpg 046.jpg (26.4 KB, 28 views)
__________________

"LUCIFER" JOYNER JD400,
CROSSHAMMER 250R,
YERF GX150,
CROSSFIRE MBX150,
BMS 800V-TWIN
'16 RZR 900s ,
'17 ACE 900XC,
'99KX250,
'94 KDX200,
'18 SSR SR170TX

Reply With Quote
  #2  
Old 03-19-2014, 12:04 AM
Miamieddie's Avatar
Miamieddie Miamieddie is offline
Heavy Contributor
 

Join Date: Jan 2012
Location: miami. florida
Posts: 610
Default

Wow!!! Good job on fixing it. He's going to be a happy customer.
__________________
2. 150cc carters. 1. Baja reaction 150cc dr2 variators Jerseydevil hp. Pipes unifilters gates belts. Yellow main springs hd. Orange coils.
Reply With Quote
  #3  
Old 03-19-2014, 03:03 PM
bear's Avatar
bear bear is offline
Senior Member
 

Join Date: Mar 2012
Location: cincy,ohio
Posts: 1,347
Default

Thats one for the books!!! fact is stranger than fiction sometimes!
Reply With Quote
Reply

Thread Tools

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 Off

Forum Jump


All times are GMT -5. The time now is 09:21 AM.


Powered by vBulletin® Version 3.8.3
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.