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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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Thoughts on the Arrow Big Block reed combo?
Danschutz
Nov 13, 2013
Replies
6
Views
5,013
Jul 23, 2014
graydog8josh
G
Broke two heads in two runs??? Why??
johnsoma
Jun 25, 2014
Replies
5
Views
2,506
Jul 22, 2014
rogergendron1
Piston mods and weight difference of pistons etc...
mapbike
Apr 18, 2014
2
3
Replies
41
Views
10,270
Jul 22, 2014
woogie_man
W
H
crank sticking?
huffypower
Jul 19, 2014
Replies
2
Views
1,521
Jul 19, 2014
MotorBicycleRacing
Paint inside the cylinder
CTripps
Jul 2, 2014
2
Replies
23
Views
5,635
Jul 14, 2014
CTripps
C
Change from iron liner to chrome plated liner?
Citi-sporter
Jun 25, 2014
Replies
0
Views
1,180
Jun 25, 2014
Citi-sporter
C
Piston head cleaning
Redbiker
Jun 24, 2014
Replies
4
Views
4,147
Jun 24, 2014
Redbiker
New top end on bottom end, very low sound to exhaust
SpecializedMountainMoto
Jun 24, 2014
Replies
6
Views
1,338
Jun 24, 2014
SpecializedMountainMoto
New slant head install
Redbiker
Jun 23, 2014
Replies
3
Views
1,196
Jun 23, 2014
maniac57
Oil coming out from spark plug
ballinchestr
Jun 7, 2014
Replies
7
Views
5,009
Jun 22, 2014
wheelbender6
H
puch head ??
Hoopermotorbikes
Jun 18, 2014
Replies
14
Views
5,605
Jun 21, 2014
mew905
G
this is what happens if you dont get your cylinder mating surface smooth
graydog8josh
Jun 7, 2014
Replies
2
Views
1,557
Jun 7, 2014
rogergendron1
Head gasket leaking...
Grimm Gunn
Jun 2, 2014
Replies
6
Views
10,772
Jun 2, 2014
2door
Scratched piston replacement?
copmagnet80cc
Apr 25, 2014
Replies
3
Views
2,470
Jun 2, 2014
rogergendron1
FredHead!
maniac57
May 16, 2014
Replies
3
Views
1,819
May 19, 2014
Davezilla
C
Is this cylinder usable?
chris8686
May 12, 2014
Replies
10
Views
2,079
May 16, 2014
Davezilla
Cylinder head tutorial I found interesting
mapbike
May 5, 2014
Replies
11
Views
3,629
May 16, 2014
Davezilla
piston pin bearing
turnofftheradio
Nov 26, 2013
2
Replies
25
Views
11,396
May 16, 2014
Davezilla
chamfered rings?
Matheneyr3
May 15, 2014
Replies
2
Views
1,332
May 16, 2014
Davezilla
F
ported cylinder
fischer550
May 12, 2014
Replies
17
Views
5,946
May 15, 2014
Davezilla
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Motorized Bicycle Mechanical Components
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