For those who are interested in just the bottom half of the OS Giken L-series, they now have a 3.2-litre kit available, using a fully counter-weighted crank with 86mm stroke, which gives 3208.4cc capacity with 89mm pistons. The kit includes forged chrome-moly conrods and forged aluminium pistons. For more details check out the info from OS Giken below. The local price in Australia Japan for the crank, conrod and piston kit (without bearings) is $14,500
OS Giken Engine Parts for Nissan L Type Engines
Crankshaft
Material---Chrome-molybdenum
Full Counter
Stroke OS 86mm (Nissan OEM 79mm)
Pin Width OS 21.7mm (Nissan OEM 27mm)
Pin Diameter OS 48mm (Nissan OEM 50mm)
Please use connecting rod bearings of Nissan OEM RB26DETT (Please purchase them at Nissan parts.).
Please use a key enclosed in the kit which is modified to 1 piece.
Description
OS Giken stroke is 7mm longer than Nissan OEM L Type engine. If it is used with diameter 89mm pistons, engine displacement becomes 3208.4cc.
Pin Width is 5.3mm narrower than Nissan OEM L Type engine by using Nissan RB26DETT connecting rod bearing.
Piston
Material---Forged Aluminum
Pin Height OS 29.4mm (Nissan OEM 38.1mm)
Pin Diameter OS 20mm (Nissan OEM 21mm)
Pin Length 61mm
Diameter---Please choose one from followings (87mm, 87.5mm, 88mm, 88.5mm, 89mm, 89.3mm, and 89.5mm).
Description
Semi-order system---Please designate piston diameter, valve recess shape, pin height and etc upon orders. Please contact us for details.
Conrod
Chrome-molybdenum and Forged (Main body parts and caps are forged separately.)
PCD OS 135.5mm (Nissan OEM 130.4mm)
Big End Width OS 21.5mm (Nissan OEM 26.8mm)
Big End Diameter OS 48mm (Nissan OEM 50mm)
Please use connecting rod bearings of Nissan OEM RB26DETT (Please purchase them at Nissan parts.).
Small End Diameter OS 20mm (Nissan OEM 21mm)
Description
Connecting rod bolts are redesigned for higher RPM and horse power applications.
General Warning
※ Please be aware of potential risks and hazards when installing our products. We do not take any responsibility for any loss and/or injury occurred when our products are modified, re-used and/or ill-fitted.
※ All OEM information on this sheet is based on Japanese Domestic Model vehicles and may not be applicable in your country.
※ Specifications may be changed without notice.