91 replies to this topic

[S pack]

Judging from warranty info about many subjects, GMH didn't like Dealers replacing more than they had to for warranty repairs.
I'm willing to bet not that many complete engines would have been replaced under warranty. eg: if all that was required was a block & piston kit or a short motor then that's only what would have been used.

GMH made it clear to dealers on numerous occasions that reimbursement for warranty repairs could be rejected if GMH guidlines weren't followed.

Edited by S pack, 07 December 2012 - 12:26 AM.

[yel327]

I don't agree that it is clear at all! I read "current production engine assemblies" as being complete engines purchased by the aftermarket industry. I don't imagine these would be used for warranty purposes in many/any cases. Engines supplied under warranty as either short or service engine should be a Nasco numbered item, not a production engine number. GMH did sell engines out of another division as well, can't remember the name, for use in concrete mixers, forklifts etc. These may even be the current production engines referred to in the parts catalogues.

Dave, you have it spot on from what I have been told as well. Only what was needed got replaced. The dealer was only given a certain amount of $/time and were dictated as to how to repair. Same seems to happen today, we had a Mitubishi Triton V6 in my business. Engine died, and the gearbox died and different times. Both were fully rebuilt under warranty, no replacements allowed.

Edited by yel327, 07 December 2012 - 07:13 AM.

[S pack]

Byron

Nasco, then changed to GMP&A, then responsibilty for marketing of complete engines changed to GM Allied Products through a network of GM Allied Distributors.
Supply of stripped engines, shorts and blocks remained with GMP&A.

The times dealers were allowed in the Standard Times Catalogues to carry out repairs are ridiculous. To say GMH were careful with expenditure would be an understatement.

Edited by S pack, 07 December 2012 - 08:48 AM.

[yel327]

^^That is what I thought. When exactly did Nasco become GMP&A? Prior to this I assume Nasco sold complete engines that were later sold by GM Aliied?

I have an LH standard times manual here. Operation number 061-001 - Engine Assembly R&R. Inl.cudes R&R engine assembly, Transfer parts not furnished with new engine. V8 is 6.9 hours. Given all the right equipment on hand I reckon I could do that. Same thing but for short engine is 13.7 hours. I might struggle with that one, but I guess it means 2 x people for just under a day. Block and piston kit is 18.3 hours.

[S pack]

^^That is what I thought. When exactly did Nasco become GMP&A? Prior to this I assume Nasco sold complete engines that were later sold by GM Aliied?

I have an LH standard times manual here. Operation number 061-001 - Engine Assembly R&R. Inl.cudes R&R engine assembly, Transfer parts not furnished with new engine. V8 is 6.9 hours. Given all the right equipment on hand I reckon I could do that. Same thing but for short engine is 13.7 hours. I might struggle with that one, but I guess it means 2 x people for just under a day. Block and piston kit is 18.3 hours.

Nasco changed to GMP&A in late 1973. Not sure of the exact date, maybe November.

I suppose with full workshop facilities at your disposal the standard times might be reasonable. I just find it hard to imagine how the work could be carried out with proper care and attention.

[yel327]

If all went OK, and there was nothing wrong with the bits that came off the eengine they'd probably pull it off. But if they had problems and had to go troubleshooting (like leaks, valve problems on the original head (short motor)), malfunctioning carby or dizzy etc they'd be screwed!

[yel327]

Q. were there any nasco replacement engines with engine No ending in other than S. IE mine is 308N32**S installed 21/5/71. certificate states produced in general motors holden plant at port melbourne.then description of brand new parts fitted.

Ken, all the HK-HG Nasco blocks I have found so far have had the S on the end, not 100% sure if S actually means SHORT, but that document you have that you sent me a copy a few years back certainly points in that direction. I have yet to see one without the S.

[yel327]

It is my understanding that there were several ways to repair or replace an engine.
1.
Block and piston set No engine number up to July 1973

2.
Short motor two seperate types, previous to 1970, and after 1970 eg 186N and NK etc.

3.
Nasco service engines up to 1970 ( were these a short motor or whole motor? )

4.
Differently marked Nasco engine from 1970 ( were these a whole motor or a short motor? )

5.
Whole engines supplied after mid 1971 supplied from Holden spare parts and refered to as engines for service, these are not the same as previous service engines.


Whole engines not listed in my GMP & A Catalogue, just short motors and Block and piston sets.

I have a HQ standard rate magazine here, I will look that up too.

Mike.
GM P & A

1. Block and piston kits should have got an engine number: the number off the block that was being replaced. They are stamped too neat not to be done in the Nasco facility.
2. 1970 has nothing to do with it.
3. Both.
4. ?
5. They'd be supplied exactly the same, ie as a long motor with a Nasco sequence number applicable to where it was going. Forms 186N or NT as examples.

[S pack]

The rear main seal did not change to rope till some time in 1974 as far as I know, so wouldn't that mean all the previous engines had neoprene seals of some description? ( I know there were two types )

The last NP ( Nasco ) replacement engines ( or short engines, which ever it was? ) that I know of was Aug 1974 this seems to be about the time Nasco was winding down

Mike

Introduction of the rope type rear main oil seal was early 1974, but only in HQ 202 blocks. 173, 253 and 308 engines received the rope oil seal a little later. So far I've found 4 variants of rear main oils seals prior to the rope tyoe seals.

NASCO wound up operations in late 1973, by January 1974 it was GMP&A. This obviously had no immediate effect on the supply of 'N' prefix replacement blocks/engines.