Datsun Roadster Parts from Rallye Enterprises, Ltd.

SU and SOLEX CAMSHAFT INFORMATION. Originally the SU carb equipped 2000s came with a 256 degree cam, and the cars with Mikuni-Solex carbs came with a 280 degree cam. These were noted by an "A" (SU) or "B" (Solex) which was stamped into the rear end of the camshaft. This requires a mirror to see if the camshaft is still in the car. Some cams have been reground without changing this designation. The Solex cam can be used with the SU carbs. It adds some performance while still retaining a decent "street" idle. The power band moves up about 500 rpm (personal opinion). The gains at the higher rpm's are somewhat the same as the losses at lower rpms. NOTES: Rockers should be changed when cam is changed. Cam should be checked for binding in towers (misaligned towers, warped head). With rockers out, chain off, journals oiled, caps tightened, shaft should spin with finger and thumb. This ability to turn freely should not change when head is torqued down. If you are ordering a camshaft because your old one broke in the middle, it wasn't because the cam was "bad" and it isn't the end of your trail. It broke because it has been run in a head that has been bending it back and forth every time it rotates. Your head needs work, or a new cam will also break. Camshafts carry no warranty whatsoever against breaking as they don't break on their own. Check it out with your machinist and if you have any doubts or questions please contact us. Ensure that both ends of camshaft have plugs installed, but not installed so deep that end journals' oilways are blocked. To check with cam in car, use long hairpin or nail, you shouldn't be able to shove something farther inward than the center of the outermost bearing journals. You can check oil flow by removing rockers, distributor and distributor drive shaft. Insert long screwdriver in oil pump slot and spin screwdriver counterclockwise with palms of hands. You should be able to pump oil out all 8 cam oil holes. (a reversible drill makes it a bit easier to spin oil pump) No oil should come out either end of camshaft.