Gasket Cylinder Base 1,5mm thick Vespa 200 STANDARD 210cc MALOSSI /POLINI 208cc
$75.6
$145.91
DescriptionGasket Cylinder Base 1,5mm thick Vespa 200 STANDARD 210cc MALOSSI /POLINI 208ccGasket Cylinder Base (th) 1,5mm,STANDARD 200cc/POLINI 208ccfor Vespa 200 Rally/P200E/PX200 E/Lusso/'98/MY/Cosa200 Aramid fibre 1.5mm PACKER PLATE for USE WITH 60mm CRANKS - P200 with EITHER STANDARD OR PINASCO 213 CYLINDERS. When changing to a 60mm crankshaft, the stroke is 3mm longer than standard, the piston will now travel 1.5mm higher and 1.5mm lower than it would with a standard crank, so in order that the piston does not bash in to the head the barrel will need lifted by 1.5mm, hence the need for this spacer. This is made from Aramid fibre and has a port layout to match the the standard 200 barrel or the Pinasco 213 barrel. Thick base and head gaskets / spacers are required for raised cylinders and crankshafts that have a longer stroke. When using a long stroke crankshaft, the half length of the additional stroke has to be compensated for by a head and/or base gasket. With compensation by a base gasket, the outlet times are lengthened and the transfer times are also clearly longer. If the outlet is also lifted somewhat by milling, it is possible to optimise the engine for higher revs. Compensation with a head gasket lengthens the outlet and transfer times only slightly, with the transfer timing changing more than the outlet timing (= less blow down). This represents an optimisation for more torque at middling revs. If you install a 60mm instead of a 57mm crankshaft on a MALOSSI 210cc, the 3mm further stroke have to be compensated for a 1.5mm gasket. The following then applies: 1.5mm compensation, base: Wide revs range and high HP, but limited torque and boost to performance that is both late and only occurs suddenly. 1.5mm compensation, head: Extreme torque and risk of wheelies in the lower rev ranges but lower top speeds. On the 210cc, this is SIP's favourite touring combination, also in combination with long transmissions. The raising of the POLINI 130cc in combination with a 54mm crankshaft is also popular, and rewardswith power, durability and winning positions. With a longer con-rod, the stroke does not change, but the cylinder has to be raised accordingly by the difference of the con-rod lengths. The base gaskets are available in 0.5mm - 10.0mm, the head gaskets are available from 0.5mm - 2.0mm. They are mostly made from aluminium. Conclusion: Long stroke crankshaft tuning with different spacer combinations is the performance increasing trend of recent years. This is where the wheat is separated from the chaff.(see below) VESPA 200 Rally 200 VSE1T 2T AC '72-'79 VESPA COSA 1 200 VSR1T 2T AC '88-'91 VESPA COSA 2 200 VSR1T 2T AC '90-'96 VESPA P200E / PX200 E 200 VSX1T 2T AC '77-'83 VESPA PX200 E '98 / Millenium 200 VSX1T 2T AC '98-'05 VESPA PX200 E Lusso/ EFL/ Arcobaleno / Elestart 200 VSX1T 2T AC '83-'97
