GasGas Riders Club Forum  

Go Back   GasGas 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
  #1  
Old 02-09-2018, 11:40 AM
jcs003 jcs003 is offline
Member
 
Join Date: Jan 2018
Posts: 45
Default Stroker Crank

Does anyone sell a drop in stroker crank? if not, who is a recommended builder to do the work?

Thank you,

John


Reply With Quote


  #2  
Old 02-09-2018, 08:39 PM
PEB PEB is offline
Senior Member
 
Join Date: Aug 2006
Posts: 1,145
Default

For a 2 stroke? I have two used 2 stroke cranks for sale if you want one to send out to have work done on and not tear down what you have.
Reply With Quote
  #3  
Old 02-11-2018, 01:00 AM
swazi_matt swazi_matt is offline
Senior Member
 
Join Date: May 2010
Location: Swaziland - Gods gift to off-road riding!
Posts: 1,918
Default

WHat is a stroker crank? Tried google but not sure it is giving me the right answers
__________________
2010 ec 300
Reply With Quote
  #4  
Old 02-11-2018, 01:44 AM
(F5)'s Avatar
(F5) (F5) is offline
Gold Level Site Supporter
 
Join Date: Jul 2006
Location: Wellington New Zealand
Posts: 1,089
Default

Well the easy way is to find a rod with a bigger pin so you can offsetbore the crank for more throw.
Why would you bother?
The right needle and a head reshape will bring you more performance
__________________
'07 EC300
496 CPI Cheetah RZ/RGV hybrid
675 Street Triple R
RS125 framed MB100 racer
Stinger T125 Suzuki
Reply With Quote
  #5  
Old 02-11-2018, 04:31 AM
Anders's Avatar
Anders Anders is offline
Gold Level Site Supporter
 
Join Date: Nov 2009
Location: Kongsberg, Norway
Posts: 633
Default

Quote:
Originally Posted by swazi_matt View Post
WHat is a stroker crank? Tried google but not sure it is giving me the right answers
Its a crank with a longer than "normal" stroke.
__________________
Anders

"So you know, that you're over the hill when your mind makes a promise that your body can't fill" (Little Feat: Old Folks Boogie)

2015 EC200 Racing: TE bars, Rekluse Core Exp 3.0, 38mm Lectron & Ohlins S3 steering damper
2006 EC200: 2011 plastics, Rekluse Z-Start, revalved KYB forks & Scotts steering damper
1998 Bimota Supermono
1986 Duc Mille S2
1975 Guzzi sidecar hack
1961 Morini Corsaro 125
etc
Reply With Quote
  #6  
Old 02-11-2018, 08:13 AM
Zman's Avatar
Zman Zman is offline
Platinum Level Site Supporter
 
Join Date: Apr 2010
Location: Burbs of Chicago
Posts: 1,308
Default

Quote:
Originally Posted by (F5) View Post
Well the easy way is to find a rod with a bigger pin so you can offsetbore the crank for more throw.
Why would you bother?
The right needle and a head reshape will bring you more performance
I believe you can weld the existing hole and use the stock size pin. Stroker cranks need to be rebalanced to prevent bad vibes.

Big bore kit is another option.
Reply With Quote
  #7  
Old 02-11-2018, 12:39 PM
gasser's Avatar
gasser gasser is offline
Senior Member
 
Join Date: Nov 2006
Location: Cookeville, TN
Posts: 1,348
Default

If I remember right Jim Cook used to have a stroked out 250 - maybe he'll have some info for you.
Reply With Quote
  #8  
Old 02-12-2018, 12:39 AM
swazi_matt swazi_matt is offline
Senior Member
 
Join Date: May 2010
Location: Swaziland - Gods gift to off-road riding!
Posts: 1,918
Default

Quote:
Originally Posted by Anders View Post
Its a crank with a longer than "normal" stroke.
does that not increase the compression?
What are the benefits of this mod over just ensuring proper squish or modifying the head (insert) to increase the compression?
__________________
2010 ec 300
Reply With Quote
  #9  
Old 02-12-2018, 01:46 AM
Anders's Avatar
Anders Anders is offline
Gold Level Site Supporter
 
Join Date: Nov 2009
Location: Kongsberg, Norway
Posts: 633
Default

Quote:
Originally Posted by swazi_matt View Post
does that not increase the compression?
What are the benefits of this mod over just ensuring proper squish or modifying the head (insert) to increase the compression?
This is a trick mostly used in forstrokes to increase the capacity, like boring out the cylinder. Whether you select to bore or to stroke (or both) would depend on how you want your engine to perform.

You would have to raise cylinder to bring the compression down to normal, often done by placing a spacer under the cylinder. But on a twostroke, a stroker crank would also lead to changes in the port timing, making it more difficult to just add a spacer.
__________________
Anders

"So you know, that you're over the hill when your mind makes a promise that your body can't fill" (Little Feat: Old Folks Boogie)

2015 EC200 Racing: TE bars, Rekluse Core Exp 3.0, 38mm Lectron & Ohlins S3 steering damper
2006 EC200: 2011 plastics, Rekluse Z-Start, revalved KYB forks & Scotts steering damper
1998 Bimota Supermono
1986 Duc Mille S2
1975 Guzzi sidecar hack
1961 Morini Corsaro 125
etc
Reply With Quote
  #10  
Old 02-12-2018, 02:54 AM
RBrider RBrider is offline
Senior Member
 
Join Date: Sep 2015
Location: Fla & NC mtns
Posts: 259
Default

Quote:
Originally Posted by jcs003 View Post
Does anyone sell a drop in stroker crank? if not, who is a recommended builder to do the work?

Thank you,

John
There's a engine builder in the PNW that builds 2 stroke strokers, but for the life of me can't think of his name. I believe someone on this forum has a long stroke GG done by this person. Maybe in the Chicago area.

RB
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
Crank Remover and Crank Installer tools for EC250 Fabry Enduro Engine - 2 stroke 5 06-25-2013 07:24 PM
Long/Stroker rod for 01 XC? jgas Enduro Engine - 2 stroke 20 10-31-2012 01:49 AM
stroker rods. Dude Enduro Engine - 2 stroke 9 07-06-2011 04:42 PM
Which stroker oil...? Gonzo Enduro Engine - 2 stroke 10 03-11-2007 05:42 PM




All times are GMT -5. The time now is 01:06 PM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Copyright 2009 - GasGasRider.org