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Heads and Cylinders
All about your porting, compression, rings, cylinder and piston modifications to your bicycles engine
Forums
Motorized Bicycle Mechanical Components
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heads and cylinders after 3000 miles
javy mcdees
Jun 7, 2019
Replies
9
Views
2,067
Sep 28, 2019
javy mcdees
J
oil on top of cylinder head
Jurney
Sep 23, 2019
Replies
2
Views
1,662
Sep 24, 2019
Jurney
J
What Compression Reading Should I Get?
exokinetic
Apr 24, 2016
Replies
7
Views
9,135
Sep 8, 2019
lewdog7431
A
Scratched cylinder and piston?
Alberto Gaytán Martínez
May 3, 2019
Replies
4
Views
3,294
May 4, 2019
Greg58
what size cc now
chmn22s
Sep 24, 2018
Replies
3
Views
1,738
Apr 23, 2019
chmn22s
R
Cylinder Porting
ronin62715sv
Jul 17, 2018
Replies
7
Views
5,319
Mar 19, 2019
javy mcdees
Transfer Port Modification- Pictures and results here.
Bikeguy Joe
Feb 5, 2009
10
11
12
Replies
238
Views
106,108
Mar 19, 2019
javy mcdees
broken rings
lewdog7431
Feb 19, 2019
Replies
4
Views
1,034
Feb 19, 2019
Venice Motor Bikes
D
GT90 Conversion Kit
doomedgame
Sep 25, 2017
Replies
7
Views
5,045
Nov 5, 2018
John420jones
J
M
Low hole piston vs. high hole piston
Metalhead6969
Oct 29, 2018
Replies
1
Views
3,053
Oct 29, 2018
Venice Motor Bikes
Porting First Time No Problem?
carl clack
Jun 29, 2018
Replies
0
Views
1,978
Jun 29, 2018
carl clack
F
Head gaskets
Flathead
Jan 10, 2016
Replies
18
Views
4,758
Jun 20, 2018
Inf3ct3d89
top end mods to stock part for more power !!!
rogergendron1
Oct 12, 2013
2
Replies
21
Views
18,773
Jun 14, 2018
Rstar23
R
M
Big jugs
Mouse
Jan 28, 2016
Replies
14
Views
7,063
Apr 29, 2018
Mouse
M
M
Help carb/head combination
Miguel P
Apr 4, 2018
Replies
7
Views
1,309
Apr 13, 2018
CrazyDan
R
Reed valve without third transfer port or stuffed cases
Rudz
Jul 14, 2015
Replies
16
Views
17,545
Feb 9, 2018
Venice Motor Bikes
W
No fuel getting to top of piston
Wilder777
Dec 7, 2017
Replies
9
Views
3,099
Dec 19, 2017
Wilder777
W
B
The head bolt rod on my engine is striped.
bob1352
Nov 27, 2017
Replies
7
Views
1,171
Dec 2, 2017
crassius
this may be a dumb question
Ruby478
Oct 16, 2011
2
Replies
22
Views
6,914
Aug 14, 2017
Danny Torino
D
Jet 66/80cc motor only from gasbike.net or kings motor bikes
jolfstn
Aug 12, 2017
Replies
2
Views
1,018
Aug 12, 2017
jolfstn
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Motorized Bicycle Mechanical Components
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