hello i am brand new here but i have ridden my mz 125 sm and have just recently gotten my a2 (means i can ride bigger bikes than 125cc) but i saw someone recently posted about him getting a 180 big bore and was just wondering where and what websites can i find pistons that can give my bike some more ccs
am frow sweden if that helps so if you know any sites that ship to sweden please do lte me know
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need advise
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need advise
by dannemyboi » Thu Oct 28, 2021 4:06 pm
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Re: need advise
by DAVID THOMPSON » Thu Oct 28, 2021 8:26 pm
big bore kits did not work out
dave
will send you a personal message
dave
will send you a personal message
Dave 2002 MZ RT125+1995 Saxon Tour(500cc)
1997 MZ 660 Traveller+6/13/09 WV USA
"IN the end times the IDIOTS will be in charge
of everything"
"I like the road less traveled if it's PAVED!"
wd8cyv at yahoo dot com
1997 MZ 660 Traveller+6/13/09 WV USA
"IN the end times the IDIOTS will be in charge
of everything"
"I like the road less traveled if it's PAVED!"
wd8cyv at yahoo dot com
-
DAVID THOMPSON - Moderator
- Posts: 5161
- Joined: Sun Nov 23, 2003 11:01 am
- Location: Parkersburg, West Virginia USA .questions answered MZ 95 up, BMW 1953 to 1979 and ham radio WD8CYV
Re: need advise
by kiu » Thu Jan 05, 2023 1:49 pm
Hej!
Sorry i dont understand the answer, here are my two cents why i think 180 cc Big Bore Kits work out very nice!
First: It has to be done in a good way.
1. Originally the engine was planed 125-200 ccm. Means The gearbox can take the torque,
and i see out of the rpm that the 6th gear can do more with more ccm.
2. In Germany we have at least two supplier offering the Big bore kit. It was succesfully used in the racing teams, for many years.
Take a look for Mr. Faber in MZ-Faber.de or for Mr. Schuller in racing-shop-schuller.de
3. Important is to have a new connecting rod from PROX with a roller bearing wich is recommened for 125 cc long life and of course for more power in case of 180cc.
That means in origninal is a sliding bearing, those simetimes wore out.
4. New timing chain in best quality DID
5. 1,5 mm Aluminum sealing kit under the head because of the longer connecting rod. With the 1,5 mm more height there will be never a problem with the oil channel beside the timing chain!
Happy to read you opinion.
Best!
kiu
Sorry i dont understand the answer, here are my two cents why i think 180 cc Big Bore Kits work out very nice!
First: It has to be done in a good way.
1. Originally the engine was planed 125-200 ccm. Means The gearbox can take the torque,
and i see out of the rpm that the 6th gear can do more with more ccm.
2. In Germany we have at least two supplier offering the Big bore kit. It was succesfully used in the racing teams, for many years.
Take a look for Mr. Faber in MZ-Faber.de or for Mr. Schuller in racing-shop-schuller.de
3. Important is to have a new connecting rod from PROX with a roller bearing wich is recommened for 125 cc long life and of course for more power in case of 180cc.
That means in origninal is a sliding bearing, those simetimes wore out.
4. New timing chain in best quality DID
5. 1,5 mm Aluminum sealing kit under the head because of the longer connecting rod. With the 1,5 mm more height there will be never a problem with the oil channel beside the timing chain!
Happy to read you opinion.
Best!
kiu
Last edited by kiu on Thu Jan 05, 2023 1:57 pm, edited 1 time in total.
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- Joined: Thu Jan 05, 2023 1:37 pm
Re: need advise
by kiu » Thu Jan 05, 2023 1:56 pm
PS: Thats my best knowledge and the minimum to do, ask the two guys and learn more...
- kiu
- Posts: 2
- Joined: Thu Jan 05, 2023 1:37 pm
Re: need advise
by DAVID THOMPSON » Fri Jan 06, 2023 2:20 am
at the present time best to leave it as it came from factory and ride it
where i live its only of value if it runs good as a DAILY DRIVER
as any major repairs will KILL YOUR POCKET BOOK
where i live its only of value if it runs good as a DAILY DRIVER
as any major repairs will KILL YOUR POCKET BOOK
Dave 2002 MZ RT125+1995 Saxon Tour(500cc)
1997 MZ 660 Traveller+6/13/09 WV USA
"IN the end times the IDIOTS will be in charge
of everything"
"I like the road less traveled if it's PAVED!"
wd8cyv at yahoo dot com
1997 MZ 660 Traveller+6/13/09 WV USA
"IN the end times the IDIOTS will be in charge
of everything"
"I like the road less traveled if it's PAVED!"
wd8cyv at yahoo dot com
-
DAVID THOMPSON - Moderator
- Posts: 5161
- Joined: Sun Nov 23, 2003 11:01 am
- Location: Parkersburg, West Virginia USA .questions answered MZ 95 up, BMW 1953 to 1979 and ham radio WD8CYV
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