how to identifiy a "R16"?

[DellNott]

I was told this motor came out of a 66 roadster, how or where can i find out what it is by giving engine numbers.

[datsunaholic]

Well, an "R16" will have a small machined area on one side (2 pads) the first pad will say "R" and the second pad will have the serial number.

 

As far as I know, all engines that have an "R" engraved in are R16. The 1.5L version will say "G".

[datzenmike]

If it's like the 2000 Roadster mtr. the starter is on the left side. Only the SD (diesel) is like that.

[ggzilla]

The best way is as Doug says, look for the engine stamp.

 

It has a cast aluminum valve cover and twin Hitachi sidedraft carburetors

[DellNott]

Thank you guyz, you have been a big help! It is a R 16.. how would i find out the year it was manufactured?

 

[ggzilla]

There's no way of telling.

[shifty]

http://datsunroadster.com/INFO_PAGES/what_year.htm

 

 

The engine number will not be the same as the chassis number. U20 engine numbers usually are 400-500 numbers higher, which allowed for spare engines and from the right hand drive cars taking engines from the same numbered supply. I've also seen a new engine that had NO engine number stamped on it. The R-16 engine, which began production in 1965, was also used in the RL411 Sedan and Wagon, which was produced in greater numbers. Variations of it's kissin' cousin the H20 continued to be used in a number of other passenger and industrial installations. The G-15 engine was also used in a number of other vehicles. The only major differences are in the R-16 in that at R-40000 the number of main bearing saddles was increased from three to five (although it's debatable whether or not that was an improvement) and some of the threaded holes were changed to metric specifications; although the headbolt hole threads remained the same! As best we can figure; the starting numbers for a given LHD model year are estimated to be as follows. There is sometimes overlap at the beginning and end of a year as they didn't always take the engines in exact order of when the engines were actually produced.

If you have a car close to the beginning of a model year and find this information to be inaccurate please let us know. As with all Nissan figures, numbers are approximate.

 

63 G15 70000

 

69 R16 70000

 

64 G15 72000

 

70 R16 93500

 

65 G15 91000

 

END: R16 120200

 

65 R16 00001

 

67 U20 00001

 

66 R16 02000

 

68 U20 01700

 

67 R16 18000

 

69 U20 07500

 

67.5 R16 40000

 

70 U20 13700

 

68 R16 58000

 

END: U20-15555

 

 

Also go to www.311s.org for lots of roadster info,

[MikeRL411]

Roadster type R engines have "square" oil pans that are removable from below the roadster. The RL411 engine has a hammerhead finned cast aluminum oil pan that fills the space between the front cross member and the transmission, it cannot be removed from the sedan without pulling the engine due to the interferrence with the front suspension crossmember. The roadster cast aluminum valve covers have a squared off rear edge behind the PCV connector [later models have this connecting right hand fitting, older roadsters did not]. RL411 sedan valve covers have the rear edged cut back in a 45 degree slope so that the valve cover can be fitted on after the block is installed into the sedan, the windshield wiper mount would interfere with the roadster configured cover. And yes, the starter is on the US passenger side below the steering wheel shaft. On the other hand, this makes getting to the oil filter on the passenger side easier.

[ggzilla]

The R16 is distinctive looking with the finned aluminum cover.

 

Here's a 1970 Roadster R16

 

[rtscaptain]

[MikeRL411]

 

 

According to "Shifty"s post above this engine is the 28th production unit for the 1966 roadster run.  Definitely a keeper!

[MikeRL411]

The R16 is distinctive looking with the finned aluminum cover.

 

Here's a 1970 Roadster R16

 

 

 

 

 

 

 

A 5 main bearing metric type R engine.