Rieju & GasGas Legacy Riders Club Forum  

Go Back   Rieju & GasGas Legacy Riders Club Forum > GasGas Enduro Technical Forums > Enduro Engine - 2 stroke

Enduro Engine - 2 stroke Cylinder, Piston, Tranny, Bearings, Clutch, Pipes & Silencers, etc.


Reply
 
Thread Tools Display Modes
  #181  
Old 08-31-2016, 11:46 PM
bluespark's Avatar
bluespark bluespark is offline
Senior Member
 
Join Date: May 2013
Location: CO
Posts: 124
Default

I was hoping someone could confirm that myPV is working proper? It does stay closed at idle

https://youtu.be/pRd6anPzvuQ

https://youtu.be/lzYAjvG-mnw


Reply With Quote


  #182  
Old 09-01-2016, 01:05 AM
stabak's Avatar
stabak stabak is offline
Senior Member
 
Join Date: Feb 2010
Posts: 175
Default

looks ok
__________________
EC250 2019
Reply With Quote
  #183  
Old 02-05-2017, 03:57 PM
NM_GG_Rider NM_GG_Rider is offline
Member
 
Join Date: Mar 2016
Posts: 22
Question PV visibly moving from exhaust port

Hi gang,
I've spent the morning reading every post I can find about the Power Valve in hope of bringing power back to my '15 300.

Question before I take the right hand side PV cover off is... If I twist the throttle with the engine off, should I see the PV move in the exhaust port?? When I twist the throttle, nothing is visibly moving, but I think it's because the PV moves from the centrifugal force of the engine.

I'd rather not crack open the side if I can avoid it, but it appears I'm going to have to.

Picture is the view I get as I peer into my baby's heart... (Tried to edit so it's not upside down, but couldn't get it right side up)

Thanks,
Rob
Attached Images
File Type: jpg image.jpg (127.0 KB, 121 views)
Reply With Quote
  #184  
Old 02-05-2017, 10:58 PM
swazi_matt swazi_matt is offline
Senior Member
 
Join Date: May 2010
Location: From Swaziland, Now Hamilton New Zealand the “look but don’t touch” enduro heaven
Posts: 2,334
Default

No the power valve is opened by the engine revs, there is no mechanical link to the throttle so you will not see any movement if the engine is off
__________________
2003 txt250 Pro
2013 Ossa 280i
Reply With Quote
  #185  
Old 02-05-2017, 11:35 PM
Moto7man Moto7man is offline
Member
 
Join Date: Aug 2011
Location: Murfreesboro,Tennessee
Posts: 2,537
Default

Quote:
Originally Posted by swazi_matt View Post
No the power valve is opened by the engine revs, there is no mechanical link to the throttle so you will not see any movement if the engine is off
Yeah that is correct, it is powered by centrifugal force. If you look at the technical section at the first page before you select forum there are some good diagrams and articles on the power valve. Also, your power valve has an external adjuster that makes a big difference in your power delivery,( so I have been told.) so, you might want to check that first.
__________________
2011 GG EC 300E, 1994 CR 250R, 1984 RM 250 E, 2022 Ranger 300

"If you stop eating donuts you will live 3 years longer. It's just 3 more years that you want a donut."
―Comedian Lewis Black

"I think best when I have a wrench in my hands." Soichiro Honda

"Dreams are messages from the deep."
-Unknown Sardaukar
Reply With Quote
  #186  
Old 02-09-2017, 02:52 PM
Jim Cook's Avatar
Jim Cook Jim Cook is offline
Platinum Level Site Supporter
 
Join Date: Sep 2006
Location: Smackover, Arkansas (AR)
Posts: 687
Thumbs up

One more thing that I haven't seen in the replies to your post.
Looking at your piston (in the attached photo) makes me think that you might want to do a top end job. The piston is streaked pretty badly. If your rings are also streaked, then loss of compression may be where your power went. A top end job might be best to ensure that your cylinder stays in good shape.

Are you carefully warming your engine before loading it hard with the throttle?
What oil and jetting are you running? My bike is in it's fourth year, and it has yet to scuff a piston like that.
__________________
Jim Cook
Smackover Racing
Team LAGNAF
'11 Gas Gas EC250 (primary ride)
'06 Gas Gas DE300
2004 Gas Gas TXT300 Pro
'94 Husaberg FE350
'86 Yamaha IT200
'86 Honda TRL200 Reflex
'04 KTM 525EXC (soon to be dual sported)
Several others, including project bikes, Deb's bike, and a fleet of grandkids' bikes

Let's go riding!
http://www.jebruns.com/Wudi19/wudi19.html
http://www.ahrma.org/schedules-results/cross-country/
Reply With Quote
  #187  
Old 04-17-2017, 07:42 PM
Magellan Magellan is offline
Member
 
Join Date: Jul 2006
Location: Portland, OR
Posts: 45
Default

Quote:
Originally Posted by Jakobi View Post

Special note: Don't try to move the plate around with the arm attached. It will dislodge a ball lower in setup and stop the system working.
Sorry to dig up an old post. I pulled apart my top end this weekend and noticed the shaft on my pv bracket is broken, so cane here looking to see if anyone has just welded it back on.
In any case found this thread (and this post). I'm sure I moved the plate around with the arm attached during disassembly. However, the engine was off. Is this warning only for when the engine is running?
__________________
James
------------
2004 EC300 -- LTR Stuff, RB Designs Carb Mod
2016 Africa Twin
1975 Honda CB400 F1 (X2, projects)
2019 RE 650INT
1982 KDX80
2017 KAW EX300
1982 XL500R
2015 HUSKY FE501S
1972 HON CB175
Reply With Quote
  #188  
Old 04-18-2017, 12:19 PM
swazi_matt swazi_matt is offline
Senior Member
 
Join Date: May 2010
Location: From Swaziland, Now Hamilton New Zealand the “look but don’t touch” enduro heaven
Posts: 2,334
Default

Quote:
Originally Posted by Magellan View Post
Sorry to dig up an old post. I pulled apart my top end this weekend and noticed the shaft on my pv bracket is broken, so cane here looking to see if anyone has just welded it back on.
In any case found this thread (and this post). I'm sure I moved the plate around with the arm attached during disassembly. However, the engine was off. Is this warning only for when the engine is running?
No it applies to when the engine is off as well, but to be honest I believe you woul need to have an element of bad luck for the a ball to fall out. If the bike was on its side it would not have fallen out.

That being said it is worth opening her up and making sure. It is not a big job and you will be able to set the of slack properly
__________________
2003 txt250 Pro
2013 Ossa 280i
Reply With Quote
  #189  
Old 04-19-2017, 11:23 PM
Magellan Magellan is offline
Member
 
Join Date: Jul 2006
Location: Portland, OR
Posts: 45
Default

Well, I tugged on the rod a bit and it is nice and snug. I just pulled enough to feel the tension, but not move it. There's enough tension that I don't think I moved it during disassembly. I wouldn't have pulled it that hard. I think what happened is I moved the bracket, but since the stud is broken, it just fell out.
If I did lose a ball, how will I know? Can I start the bike and then tell somehow, or is the only way to be sure to pull the cover?
__________________
James
------------
2004 EC300 -- LTR Stuff, RB Designs Carb Mod
2016 Africa Twin
1975 Honda CB400 F1 (X2, projects)
2019 RE 650INT
1982 KDX80
2017 KAW EX300
1982 XL500R
2015 HUSKY FE501S
1972 HON CB175
Reply With Quote
  #190  
Old 05-02-2017, 07:19 AM
Jim Cook's Avatar
Jim Cook Jim Cook is offline
Platinum Level Site Supporter
 
Join Date: Sep 2006
Location: Smackover, Arkansas (AR)
Posts: 687
Thumbs up

Quote:
Originally Posted by Magellan View Post
Sorry to dig up an old post. I pulled apart my top end this weekend and noticed the shaft on my pv bracket is broken, so cane here looking to see if anyone has just welded it back on.
In any case found this thread (and this post). I'm sure I moved the plate around with the arm attached during disassembly. However, the engine was off. Is this warning only for when the engine is running?
I doubt you lost a ball without taking the pv governor apart.

I have welded the stud back onto the pv bracket before, with good results.
I first drilled the depression where the stud broke free of the bracket, to let me weld it on the "back" side. This let me do all the welding on the back side, as there is not much clearance for such on the "front" side. I used a small welding tip in my acetylene torch and used a very thin mild steel filler rod.

If you do this, be careful to align the stud properly. It is critical to smooth operation.

My GasGas Factory tech sessions told me to heat the nylock nut on the stud before removal, to keep from breaking the stud away from the bracket, and always use a new 5mm nylock nut each time I reassembled it.


Good Luck and Good Riding!
Jim
__________________
Jim Cook
Smackover Racing
Team LAGNAF
'11 Gas Gas EC250 (primary ride)
'06 Gas Gas DE300
2004 Gas Gas TXT300 Pro
'94 Husaberg FE350
'86 Yamaha IT200
'86 Honda TRL200 Reflex
'04 KTM 525EXC (soon to be dual sported)
Several others, including project bikes, Deb's bike, and a fleet of grandkids' bikes

Let's go riding!
http://www.jebruns.com/Wudi19/wudi19.html
http://www.ahrma.org/schedules-results/cross-country/
Reply With Quote
Reply



Thread Tools
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 Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Low down / tickover issue HELP stevehipkiss Enduro Intake/Carburetion - 2 stroke 9 02-14-2011 09:03 AM
jetting - idle issue. stainlesscycle Enduro Intake/Carburetion - 2 stroke 7 12-30-2009 02:47 AM
clutch issue boostedte37 General Discussions & Announcements 2 11-09-2009 06:58 PM
ec 400 gearbox issue Paul Somerville Enduro Engine 4 stroke (including EFI & Exhaust) 3 09-05-2009 10:17 AM
PowerValve Issue- Take A look at this Picture alexpp Enduro Engine - 2 stroke 13 04-12-2009 12:13 AM




All times are GMT -5. The time now is 06:37 AM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright 2009 - GasGasRider.org