Select scooter type
Select manufacturer
Select model

Product image for 'Gasket cylinder base FALC/QUATTRINI 123-153cc (th) 1,5mmTitle'
Gasket cylinder base FALC/QUATTRINI 123-153cc (th) 1,5mm for Vespa 50-125/PV/ET3/PK/S/XL/XL2
Part no.: 90761300
€10.20
Including VAT Plus shipping
16g / Piece
Product link copied to the clipboard
Product image for 'Gasket cylinder base FALC/QUATTRINI 123-153cc (th) 1,5mmTitle' Images may differ from the original

Gasket cylinder base FALC/QUATTRINI 123-153cc (th) 1,5mm

for Vespa 50-125/​PV/​ET3/​PK/​S/​XL/​XL2

  • aluminium
 
for tuned engines
€10.20
3 ratings
Including VAT Plus shipping
16g / Piece

Product description

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 timeing changing more than the outlet timeing (= 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 rewareds with 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.

 

SIP-TIP: Do not forget the suitable long stroke crankshaft! With thick spacers, longer stud bolts are also required as well.

OEM numbers (for comparisons): (DRT)

Customers also searched for this product with:

Express Shipping Worldwide DHL, UPS, FEDEX
SIP Aid Scooterists help!
News for you Discover great new products!

Questions & answers

Let us and the community help you! You can ask your questions about the product here.

Downloads

File name File type Description File size
Montage_Polini130ccm Montage Zylinder Smallframe 8,43 MB Download
Cylinder Base_Head Gasket Spacers Cylinder Base/Head Gasket spacers 0,54 MB Download
Mounting of a Vespa smallframe cylinder Mounting of a Vespa smallframe cylinder 0,39 MB Download
near Munich, Germany Visit our Flagship Store
Are you a retailer or would you like to become one?

Report an error

{{ __('contact.report_article.sku', { number: product.articlenumber }) }}
{{ __('form.maximum_text', { count: 500 - formData.message.length, max: 500 }) }}

Report content

Report content

{{ content.title }}

High-res product images

The following list is specifically for journalists interested in using information and pictures from the SIP Scootershop product range for their press coverage. All the materials (text and pictures) available in the download area of this website are subject to the copyright and other intellectual property rights of SIP Scootershop GmbH, Germany, and are offered for journalistic use only. No permission for commercial use!

Permission for any other use is subject to a request to SIP Scootershop GmbH, Marie-Curie-Str. 4, 86899 Landsberg am Lech, Germany, and requires formal written approval by the company.

File name File type File size
{{ item.name }} {{ formatBytes(item.size) }} Download