Finally, we present it to you, the famous complete d.47mm kit from the Italian house PARMAKIT for MBK 51 (Motobecane av10 engine). This kit is a model with 6 transfers, it uses a special system to feed the rear sides.
We greatly prefer it to the AIRSAL model for example because it has 6 real transfers but also higher diagrams! This kit will be ideal for driving every day outside France because it does not work very much in terms of light shapes and diagrams, which makes it solid but also very torquey.
Preparers will also greatly appreciate working this kit in their own way. The nykasil is of very good quality and the workmanship is excellent. The exhaust is a banal oval model. This cylinder has a decompressor output that you will use if you wish but the cylinder head delivered is a model without decompressor.
This high compression cylinder head is perfect, the best on the market for MBK 51 in our eyes. It has a very good chamber shape, a polished finish, good volume and it is bulkier (cross stud around the candle) to improve cooling. The piston is a chrome S10 mono-segment, it has 2 side grease nipples.
The transfers being worked and enlarged, we recommend an alignment or POLINI, BIDALOT housings… to accompany this kit! To conclude, this stock cylinder will be extremely torquey but will preserve more power than an airsal for example! He is very solid and can be transformed into a real performance monster by a good trainer.
We recommend to accompany this kit at least : 17.5 PHBG carburetor, reinforced crankshaft and bearings, original prepared casings or racing casings, expansion exhaust ...
**Warning!!! The compression ratio should not exceed 12.7: 1, before the first start, check your chamber volume, it should be around 6.2ML / CC excluding spark plug wells!
The pack contains :
X1 high compression cylinder head
X1 cylinder Ø47mm 6 aluminum transfers nykasil
X1 single segment piston with side grease nipples
X2 piston clips in G
X1 piston pin Ø13mm
X1 reinforced cylinder head gasket
X1 base gasket
X1 reinforced exhaust gasket
X1 assembly instructions
X1 sticker
As an option we offer a stage 1 preparation, this preparation is a modification of the exhaust port by increasing the diagrams and improving the duct, it increases the performance of the cylinder. An improvement to the bottom of the skirt is also included in this modification. Allow a little extra time for this preparation!
