Sorry, as I said a few posts before this one:

Quote:

dd i have been pointed to that page once before and i couldnt find G34 at all. so it isnt much help, no offense, if you could tell me what it reads for G34 on that page it would be very much appreciated.
thanks

Thanks. I have a sheet out of a Nissan parts catalog that shows these codes and which chassis model they correspond with, but only some of them. And it's in Japanese ...

DD, the thing that needs to be taken into consideration is that there are, and always will be part number supresessions. one of the best examples of this was 26010-H1900, this was a right headlamp assembly for a B110, then in 74 it superseeded to 26010-H6300, then in 76 or 77 it superseeded to 26010-H7200, all of them are the same part and completely interchangeable. the back half of the Nissan parts numbering system doesn't necessaraly follow a specific orderly pattern, what I mean by this it that B110 parts (origanally designated) could have the following suffixs:
27700, 28500, H1000 through H4900, H7000, and H7100, and this is not all inclusive, B210 started with H5000 through H7800 and B 310 was H8500 through H9900, again this is not all inclusive, and can at times get extreemly confusing.
the only way to truly decypher a part number suffix is to have a copy of the model designation list for part number codes. I have it on micro fiche, but as yet have not found an economical way to get it into a paper form or onto CD, last quote I got was to take a complete set of micro fiche and put it onto cd was about $400.
siderack aside, I will consult with my friend at my local dealer and see if I can get a copy of his.

G34 is not 100% proof. It only means the original intended use. Some of the B210 parts use the same parts as B110 so the part number is the same, for example.

H74 through H78 are all B210
H90 through H98 are all B310

G does indicate commericals, but I don't know which one G34 is.

See the chart at the end of

A-type Cylinder Heads

well as i have said earlier, i have a casting on the (right hand side, looking from radiator quite low on the block and towards the back of the engine/front of firewall) and it reads G34, nothing else, so im guessing from the info you have given me it is indeed an A15? theres no way this could be an A12?

cheers

actually the casting number is a reference to the part number. Nissan part numbers are fairly specific as to what they are. almost all are 10 charicters in length with the first 5 charicters define the actual part it's self, the next 3 give the model that part was originally designed for and the last 2 designate design changes, color codes, original vendor, or other info.
as an example, a water pump would have a number of 21010-H1027, with 21010 designating the actual part, the H10 would designate that it was origanally intended to be used in a B110 and the 27 at the end would designate that it's an assembly on it's 3rd design change.
I never did memorize all the part number codes when I was at a dealer, there are just some things the stay with you after years of doing it for a living. what I do remember are some of what I have shared here. IF your dealer parts man is worth his pay, he should also understand this and be able to explain it to you also.

Quote:

of course thats what it was...

Quote:

is this true, do the castign numbers give a definite origin of the engine? I have posted this question before, as my serial numbers have been grinded, but i still have the castuing number, G34, and was told that these numbers represent what vehicle the engine is intended for, commercial etc. I would really appreciate it if someone could give rock hard 100% evidence that G34 represents an A15 engine and only an A15. cheers rgrinder for that one.

The Dissy is on the same side but the changed position... , late model a series shifted the alternator to the other side of the block.