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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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F
Honing
Flathead
Jan 7, 2016
Replies
6
Views
2,075
Jan 10, 2016
crassius
C
Piston arrow direction?
Chitty
Jun 27, 2015
Replies
8
Views
14,973
Jan 10, 2016
crassius
S
Piston head arrow
sboricic123
Aug 27, 2014
Replies
13
Views
8,353
Jan 10, 2016
crassius
F
Porting
Flathead
Jan 3, 2016
Replies
2
Views
1,444
Jan 5, 2016
Flathead
F
V
horsepower
vasago
Sep 3, 2015
Replies
15
Views
16,172
Jan 4, 2016
sbest
W
oops, studs penetrated the case
WallysmotordemonsWMD
Apr 29, 2015
Replies
10
Views
3,161
Jan 2, 2016
MEASURE TWICE
M
Flipping head around for spark plug clearance?
Motakitty
Oct 10, 2015
Replies
12
Views
7,396
Dec 20, 2015
Ducati250Single
D
piston question
dob1385
Dec 1, 2015
Replies
4
Views
1,649
Dec 1, 2015
dob1385
D
Notched Cooling Fins?
mogollonmonster
Sep 11, 2015
2
3
Replies
41
Views
9,959
Oct 8, 2015
Davezilla
W
best head & other upgrades for me?
Wheely
Sep 9, 2015
Replies
4
Views
2,956
Sep 17, 2015
skitchfish
S
M
Cylinder honing
MacZulu
Sep 8, 2015
Replies
16
Views
4,542
Sep 12, 2015
Chaz
W
piston confusion....
woogie_man
Sep 1, 2015
Replies
3
Views
1,665
Sep 1, 2015
crassius
torque head
Zearobiker
Aug 3, 2015
Replies
8
Views
3,143
Aug 9, 2015
Zearobiker
yet another reason to avoid doing top end work
crassius
Aug 5, 2015
Replies
6
Views
2,308
Aug 8, 2015
crassius
M
Is this normal? (skirt/sleeve alighnment)
MacZulu
Jul 19, 2015
Replies
3
Views
2,116
Jul 19, 2015
MacZulu
M
Piston and manifold mods with pixs
egjsc
Jul 11, 2015
Replies
10
Views
5,346
Jul 14, 2015
egjsc
compression & head shaving 4 dummy's
Robbie
Jun 23, 2015
Replies
0
Views
2,747
Jun 23, 2015
Robbie
T
MRA 12 piston
triride
Jun 20, 2015
Replies
4
Views
1,994
Jun 22, 2015
Davezilla
grubee gt5 cylinder differant port map than others ???
rogergendron1
Dec 26, 2013
2
Replies
27
Views
16,704
Jun 16, 2015
Springfieldscooter
Question about Puch head mounting
Southgate Jonny
Jun 5, 2015
Replies
1
Views
1,695
Jun 7, 2015
Davezilla
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Forums
Motorized Bicycle Mechanical Components
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