Northstar Engines and System Technical Discussion Discussion, N*--Built by ISUZU???? in Cadillac Engine Technical Discussion; My father's coworker just bought a 1997 Seville, and my father heard from his coworker that the Nortstar is built ...
Automobile(s): 1992 Town Car Cartier & 2014 Accord LX MTX
N*--Built by ISUZU????
My father's coworker just bought a 1997 Seville, and my father heard from his coworker that the Nortstar is built in japan by Isuzu?!?!? I know on the engine cover it says "built exclusivly for cadillac by general motors", which could explain this. I always thought the N* was built in America by Cadillac. Is it true, a Cadillac motor built in Japan???
I can positively assure you that the Northstar engine is currently, and always has been, manufactured in Livonia, Michigan. It is not made in Japan..... There was no involvement whatsoever with Isuzu on the Northstar engine.
The Ecotec engine is also manufactured in the US at Tonawanda, NY. There are several different versions of the Ecotec engine as it was designed as a global engine. It is also manufactured by Saab and in Germany for Europe. It is not made in Japan.
Possibly the Isuzu rumor started with the Isuzu connection with the diesel engine in GM trucks. The Duramax was a joint design and development project between GM Powertrain and Isuzu. The Duramax is manufactured in the US, also, but it obviously has an Isuzu/Japanese heritage of sorts.
To stay on the subject, I was once told that the N* was designed by Yamaha, which I found very strange, lol. Although I wouldn't know... but that'd be the first I hear of it.
No....it wasn't designed by Yamaha....nor Lotus....nor Oldsmobile....nor Cosworth...nor Mercury Marine....nor Warren Johnson...nor Ilmor...nor..... all of which I have heard at one time or another were "rumored" to have designed or developed or participated in the origination of the Northstar engine.
Oldsmobile built a prototype "quad 8"... there are a few pics of it floating around, but it vanished into thin air. It has many simularities with the northstar, but I'm pretty certain they are different builds. Makes you wonder where the original quad 8 went though...
The Northstar was a complete clean sheet of paper desing done solely by Cadillac Powertrain engineers. I can positively swear to this as I know the deisgners that did the orginal layout and architectural drawings and I was there when they were doing them. There was no involvement with Oldsmobile or any other division at the time. The Quad 4 or "Quad 8" design study had nothing in common with the Northstar. The Quad 4 was a cast iron block engine. The cobbled up Quad 8 had a completely different head design, different timing drive setup, etc... nothing in common nor was the Quad 8 even part of the original Northstar design study.
Bbob...You're wrong! The Northstar was made by BMW and you know it...
I also heard that the same designer/engineer that made the 4.9 liter hybrid/mule Northstar (remember that one?) is the one who made the current generation Northstar and the last generation Northstar...Like I said, they were made in Sweden by Volvo!!!
Lets face it, if it were built by Isuzu, it would never leak, burn oil, or blow gaskets. Considering that it does, we know it is GM. Hey don't get me wrong, I love mine, but the fact of the matter is.....