|
GM & JRM (JAWA) Engine Parts |
CRANK PINS , BEARINGS AND PISTONS |
33.96, 33.98, 34.00, 34.02, 34.05 NOW AVAILABLE FOR GM FLYWHEELS |
|
|
Top quality INA cage and roller bearings available separately or in packs of five.
The very best quality Vega Crank Pins available in sizes 34.96 & 34.98 straight, 34.98 stepped to 35.00,35.02,35.05,35.10. Also 35.15 stepped down to 34.98, 35.00, 35.02, 35.05 ( for old style or worn flywheels ).
33.96 straight, stepped to 33.98, 34.00, 34.02, 34.05 for GM flywheels.
33.98 straight.
33.96 stepped to 34.96 to suit standard bearings.
|
|
OVERSIZE CRANK PINS
LOOSE FITTING CRANK PINS ?
|
|
|
|
We now have oversize crank pins for the 34 mm GM flywheels.
Sizes include :-
34.00 on the end stepped down to 33.96 in the middle.
34.00 on the end stepped down to 33.98 in the middle.
34.00 straight.
33.98 straight.
33.96 on the end stepped up to 34.96 in the middle.
33.96 on the end stepped up to 35.00 in the middle.
We also have all our other pins in stock, see crank pins and bearings below. |
|
BEARINGS FOR 34mm CRANK PINS
34 x 42 x 20 cage & roller bearing
|
|
|
Cage and roller bearing for GM 34 mm type flywheels. Compatable with Vega 33.96, 33.98, 34.00 etc crank pins and Centec II con rods
|
|
CENTEC II CONNECTING RODS |
|
|
Arrow Precision Engineering Limited manufacture these rods to our own specifications. These rods offer many advantages over OEM, they are fully machined to remove stress risers, balanced end to end to within a gram and laser etched with part and batch numbers. All of Arrows rods are magnaflux tested and offer fantastic quality at a competitive price!
These rods are currently available 143 mm, 150, 160 mm, 163 mm and 164.5mm long with a 20 mm and 20.6 mm small end. Weight of 163 mm rod is 341g ! |
90 mm or 92 mm SHORT STROKE GM REPLACEMENT PISTONS |
 
|
90.00 and 92.00 mm Piston kits come complete with 1 mm nitrided compression ring and 2mm, 3 piece oil ring, "accraclip " eared circlips, 20.6 mm nitrided gudgeon pin and accracote skirt coating. |
OVERSIZE GM SHORTSTROKE PISTON
Hone out your cylinder +0.04 mm ( 1.6 thou ) |
|
GM type replacement piston made 0.04 mm bigger to suit loose or slightly worn cylinders. Allows slight honing of cylinder to clean up any wear marks.
Piston kits come complete with 90.10 mm x 1 mm nitrided compression ring and 2mm, 3 piece oil ring, "accraclip " eared circlips, 20.6 mm nitrided gudgeon pin and accracote skirt coating.
|
90 mm JAWA REPLACEMENT PISTON
To suit 90 mm nicosil bore |
|
Replacement piston for 90.00mm Jawa nicosil short stroke engines. Piston kits come complete with 1 mm nitrided compression ring and 2mm, 3 piece oil ring, 20 mm nitrided gudgeon pin, accraclips and accracote skirt coating. |
90mm REPLACEMENT GM PISTONS
STANDARD RING SET
|
|
Slight modifications to the crown and skirt for better performance, this piston replaces our previous 1250yd90c piston for GM short strokes. Piston kits come complete with 1 mm nitrided compression ring and 1.5 mm scraper oil ring, "accraclip " eared circlips, 20.6 mm nitrided gudgeon pin and accracote skirt coating. |
89.96 mm SHORT STROKE JAWA REPLACEMENT PISTONS |
|
Replacement piston for 89.96 Jawa nicosil short stroke engines. Piston kits come complete with 1 mm nitrided compression ring and 2mm, 3 piece oil ring, 20 mm nitrided gudgeon pin, accraclips and accracote skirt coating. |
88 mm REPLACEMENT JAWA PISTONS
Sized to suit 88 mm nicosil cylinders
|
|
Piston kits come complete with rings, thick wire circlips, gudgeon pin and accracote skirt coating. Rings are also available separately.
Supplied with 20.0mm pin and 2 mm, 3 piece oil ring. All top rings are nitrided steel. |
REPLACEMENT JAWA LONGSTROKE SLIPPER PISTONS
PROVEN PRODUCT |
  |
With all the features of a pot piston and the benefits of a slipper, this piston has been designed to withstand the increased piston speeds ( not revolutions )of the long stroke bore. Available in 85.0 ( to fit Jawa nicosil bore ), 85.10 , 85.25, 85.50, 20 mm nitrided gudgeon pin.
Pistons come with accraclips and accracote skirt coating.
Rings, pins & circlips also available separately. |
REPLACEMENT GM LONGSTROKE SLIPPER PISTONS
NOW AVAILABLE WITH 3 PIECE OIL RING |
  |
This piston replaces our previous 1273yd85.90c piston for GM long strokes. Piston kits come complete with 1 mm nitrided compression ring and 2 mm 3 piece oil ring, "accraclip " eared circlips, 20.6 mm nitrided gudgeon pin and accracote skirt coating.
Rings, pins & circlips also available separately. |
JAWA / JRM 350 cc REPLACEMENT PISTON KITS
NEW 80 mm PISTON KIT TO SUIT JAWA / JRM 350 cc engine |
|
Our re designed 80 mm piston kits allow higher compression ratios than standard and are also lighter than the standard piston kit. They come complete with 3 piece oil ring, 1.5 mm wire accraclips, nitrided gudgeon pin and accracote skirt coating.
Available to suit standard 80 mm nicosil, 80.25 mm and 80.50 mm oversizes. |
PISTON RING SETS
1 mm top and 1.5 mm scraper ring sets for Jawa and GM |
|
Piston rings for Jawa and GM in 85.00, 85.25, 85.50, 85.75, 86.00, 88.00, 90.00 and 92 mm
90 mm Nippon ring sets including steel top ring and 2 mm 3 piece oil ring or 1.5 mm scraper ring.
Available in sets or individually. |
90.1 mm RING SETS
Steel compression ring |
|
Problems with a large end gap ? We can supply a 90.10 mm x 1 mm compression ring and 90.1 mm x 1.5 mm scraper ring. Especially useful if running with a steel or slightly worn liner. |
NIFFLEX OIL RINGS
2 mm, 3 piece oil rings
|
|
Quality 3 piece oil ring as fitted as standard to our 80, 88 & 90 mm pistons. Produces a far cleaner running engine compared to ordinary scraper rings, as little or no oil is able to get in to the combustion chamber.
Available in 80, 86, 88 & 90 & 92 mm sizes |
77 mm RING SETS
TO SUIT 250 cc JAWA/JRM |
|
1.0 mm compression and 1.2 mm scraper ring set for 250 cc Jawa/JRM engines. |
SKIRT COATING
ACCRACOTE |
|
This is a coating that Accralite provides for piston skirts. Developed from their proven standard skirt coating, this helps reduce friction, aids “running-in” and increases longevity of the piston skirt. It is suitable for all pistons in any bore types particularly Nicosil coated bores. |
ACCRACLIP EARED CIRCLIPS
ACCRACLIPS |
|
Accraclips are now standard on all of our latest range of pistons. The eared clip prevents circlip rotation and excessive wear of the circlip groove, prolonging piston life. |
VEGA FLYWHEELS |
|
178, 181 and 184 mm diameters for both Jawa and GM ( 78.4, 86 & 87 mm ), these wheels are 27.5 mm wide with recess for thrust washers ( prolongs rod and flywheel life ).
Each set comes with a pair of thrust washers and balancing plugs.
Flywheels are supplied balanced to suit Vega pins, rods and pistons.
Other sizes available with only 2-3 week order period. |
SHAFT FOR BELT DRIVE GM |
|
Jawa drive shaft ground down to fit GM flywheels, suitable for belt drive conversion |
|
|
| |
| |
|
| |
| |
| |
