|
Enduro Engine - 2 stroke Cylinder, Piston, Tranny, Bearings, Clutch, Pipes & Silencers, etc. |
|
Thread Tools | Display Modes |
#1
|
||||
|
||||
Bore up EC 125cc of EC 144cc
Anyone here with experience to make a EC 125 to a EC 144?
In know, only bore up cylinder will be trouble with the coolant passage. My plan is 2mm cylinder bore up and enlarged stroke 4mm. But I'm only try this with used parts, if I find one. I think I'll need modifications on following parts: - exhaust valve - cylinder - cylinder head - crankshaft Sorry for my bad English! Suggestion for a better English and about this thread are welcome. |
#2
|
||||
|
||||
Your english is VERY good.
Way better than people that were raised speaking english. Fred Hoess (U.S. ISDE rider) messed around with 144 kits. He said the biggest problem was the exhaust port was too thin and would crack. |
#3
|
||||
|
||||
Even the 144YZs are hit or miss reliability wise. I almost bought one to do this, and after talking to some people with experience gave up on the idea. Perhaps there will be a factory 144 or an Athena kit like the Huskys have, they seem very reliable. I imagine production #s would have to go up though.
|
#4
|
||||
|
||||
Eric Gorr does a 144 kit for the GG 125
http://www.eric-gorr.com/international144kits.html I sold my damaged 125 cylinder to a member on here who got me to send it to Eric to bore out before returning it to him in Australia. Im not sure if he has got it back yet or not, him user name is 'geoffg' |
#5
|
|||
|
|||
Quote:
|
#6
|
||||
|
||||
I stand corrected. Same point though, its engineered as a 144, which makes the difference. I just can't give up a late model GasGas chassis for a Husky, much less a KTM.
The GG 125 can be made to run quite well off the bottom, I've done it, and that was with a 38mm carb. I would dial it in as a 125 and hope for a factory 144 kit. Are there many GG125s in Europe? They have been out since '01, so maybe there are more used parts to play with than here in the US. I suspect that factory 152 motor that Berkyboy posted about back in July had some work done to the cyl to beef up the exhaust bridge. |
#7
|
||||
|
||||
In the UK I've never seen one. All the 125's seem to be KTM. Plenty of GG 200, 250 & 300.
|
#8
|
||||
|
||||
Quote:
http://www.tmukonline.net/Page/56/2010-tm-144-en.html
__________________
'00 Montesa Cota 315R '13 Husaberg TE 300 |
#9
|
||||
|
||||
Quote:
I would be laser welding the port for a better stability. Quote:
Quote:
The motor has a bit more power in upper rpm, it feel's really good. |
#10
|
|||
|
|||
Update on the Eric Gorr 144 poject.
The cylinder arrived in Australia yesterday. All the workmanship looks very good. He tells me that the exhaust port bridge on the cylinder I bought from noobi was cracked. That was good as he has welded it and built it up wider than stock. I should have it up and running in a couple of weeks. Will post with a report.
__________________
Geoffg Gas Gas FSE450 05 Gas Gas MC125 05 |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
big bore 200 | jimbolaya | Enduro Engine - 2 stroke | 0 | 02-25-2010 09:40 AM |
GG specify piston/bore clearance 0.06mm where is this measured? | stay_upright | Enduro Engine - 2 stroke | 0 | 07-27-2009 01:00 AM |
HELP! need part for gasgas 125cc SM 2002 | sheldon | Enduro Engine - 2 stroke | 1 | 09-16-2008 08:50 AM |
HELP! need parts ofr gasgas 125cc SM 2002 | sheldon | General Discussions & Announcements | 3 | 08-31-2008 08:51 PM |