SPL311 Parts from Rallye Enterprises, Ltd. |
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Originally designed for a Nissan truck in Japan, this is a drop-in replacement in a 5 main R-1600 engine. Engine size is increased from 1595 to 1982cc, a 24% gain. The longer a crankshaft's stroke, the shorter the rods have to be if used in the same block. This crankshaft requires the use of either Nissan Industrial "H20" rods, which we sometimes have, or the U20 rods from a 2000 roadster engine. We recommend you also use flat top pistons to minimize compression ratio problems. If you have a head that has been cut a lot (over about .060", original thickness was 3.248") you should even consider dished pistons. Inquire as to availability at time of order. You'll also have to modify the skirts of your old domes if you plan on trying to use them. The 2000 pistons have short skirts so the crank throws don't hit them. Although a long stroke engine that still has the stock carbs and cam is a nice powerplant, you can see more benefit, mostly in the upper RPM ranges, by using a higher performance cam. You can also consider mounting some 2000 SU's. Recurving or replacing the distributor, while recommended for all cars, is absolutely required with this setup if you don't want pieces of the pistons melting away!!! Do the simple stuff first. |
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