Technical identify this engine

what engine is this???

 

Water pump looks GM.

Inline 4 cylinder of some kind.

Looks pretty modern, though.

 

Mercruiser? Chevy bell pattern, front sump pan, early Nova?

 

Eight ports one side, I would guess a 181 cubic inch GM industrial or Mercruiser Marine (which may be the same engine). Basically an improved version of the 153 cubic inch Chevy II used by GM 1962-1970. I have one in my '32 roadster, see http://www.jalopyjournal.com/forum/threads/4-cylinder-mercruiser-engined-cars.994010/#post-11198161

Charlie Stephens

 

I think they called them an Iron Duke if it was in a Fiero.

 

153 Chevy, 62-70, in Nova. Also used in marine, and industrial applications. Those pic's are for the Nova.

 

If you want something similar look for 4 cylinder S10, 2.5 liter

 

If it is a 153 how come it has 8 ports?

Charlie Stephens

 

After checking photo a little closer, I think that is a later industrial version .

 

I think probably mercruiser. The moraine motors were a bit more performance oriented. 4 intake 4 exhaust.

I prefer the S-10 version with the cross flow head and the tri Y header stock. I think it was built on the same platform but with a bit more technology built in.

 

Early one's had five port head, later had 8 port. All engines from Nova's had five port.

 

I think the iron duke name came from the engine they used in the Pontiac Astre in 1977. Please correct me if I am wrong. This was the Pontiac version of the Vega car whose aluminum engine had developed a terrible reputation by that time. The car ads of the period showed the engine emerging from a vat of molten iron to separate it in the public eye from the aluminum engined vega.

Charlie Stephens

 

Charlie is right. Came out in 77 for GM H-bodies. Versions of it used in lots of stuff through early 90's. Check wikipedia "Iron Duke" page. I have a really low mileage one out of a 79 Chevy Monza in the shed.

 

Charlie
I think you are correct, the first got sleeved then got a cosworth in an effort to save the little car but it never worked and the vega died. I do remember a friend that had a Vega that was on its last legs and him saying that he was going to use an Iron Duke out of a Pontiac in it.

 

That's true, but it was not a version of the Vega, aluminum engine. It was the updated Chevy 2 engine. Also used in the Fiero. They called it "Iron Duke to make sure people know it wasn't a Vega engine. The Vega might have been an OK engine, but people didn't keep their coolant properly taken care of. If they over heated you had to go to the iron sleeves.

 

When I was working in Components At UA, my supervisor went over to England and bought a March F2 or F3 ch***is. He had it shipped to Huffaker who installed a Pontiac Super Duty Iron Duke. It was a IMSA GTU engine. U meant under 2 liters, I think. Might have been 3 liters. It had an eight port cross flow head with Hilborn fuel injection and I don't know what else. But that little ****** was fast on an AutoX course.

 

This applies to the rear wheel drive versions of the 2.5 engine. Earlier 2.5's in the Monzas and other H-bodies had the intake and exhaust on the same side of the head. Later 2.5's in the S10's and Camaros had the cross-flow heads.

 

https://chicagoengines.com/industrial/gm30l-industrial-engine.html

 

gm 181 or the later ones were called 3.0 liters used up till the last 5 years in Hyster forklifts great engines yes they are an updated version of the iron duke.

 

Ve........just the name makes me shudder. Bought one brand new (first gas crisis). Within four years I gave it to a neighbor kid. He still won't talk to me......

Rich, I think Doc Dixon ran one of those Super Duty dukes in a Fiero (Pontiac backed) for a while in NHRA. Got it into the 10's IIRC.

 

some poor soul won a new Vega on "Let's Make a Deal" with Monte hall the other night. they should have went for door number 3

 

Sonny Rossie ran a roadster with a 2 liter Cosworth Vega on the salt and did quite well. Jack Ilieff (I don't know how to spell his name) had a streamliner with a Cosworth Vega and a two cylinder version to run in 1 and 2 liter cl***es. Very fast until the Hayabusas killed all that. I heard Sonny had single stick Vegas that ran well also. The Porsche 944 had a aluminum block with no liners, I have been told. Lots of dirt bikes do to. But people didn't take care of their Vegas. And that was good. Because they made great race cars with a real engine in them.

 

At the time, if you took a map of the United States and drew a line through Kansas City, MO, West coast to the East coast, EVERY aluminum Vega engine took a dump from the cold weather first start.
The "theory of an aluminum cylinder wall imbedded with free silicon and an iron coated piston was NOT worked out at the time.
This type of cylinder worked for the SCCA CAN AM Chevrolet engines, but the race world and the REAL world were NOT seeing eye to eye...

Your Pal, Gary

 

The lady that I got my Vega from was pissed off that I was going to register it. She hated that car. I kept it for 30 years before selling it down under.

 

AMC used this engine for a couple of years for the 4 cylinder version of the Spirit. They used a Chrysler 904 automatic with a special Chevy pattern bell housing.

 

Will this engine accept a small block chevy head?

 

That's correct. The block is Alusil (17% slicon in the alumium).

I used to drive/race those, when I lived back East.

 

The Iron Duke is 151ci 4" bore 3" stroke. Chevy II and 120 hp Mercruiser, OMC,Volvo 153 3.875 bore and 3.25 stroke. It is 2/3 of a 230 Chevy six. 181 GM industrial and 140 hp Mercruiser, OMC, Volvo 4" bore and 3.60 stroke. The later 140 Mercruiser, Volvo, and OMC have a one piece rear main seal. They all use the same main bearings and timing gears. 153 have 2.0 rods 151 and 3.0 (140) have 2.1 rod bearings. The 181 crank can be fitted to all engines with the proper rear seal. 153,181, and some 151 have the same bell housing pattern as SBC and later Inline 6s. 194-292 There are 2 maybe 3 eight port heads for the 181 they will fit the 153 but not 151. Early 151 were not cross flow and I think there are at least two cross flow heads. It is a confusing group of engines.
with some things that interchange. Throw in the 194-292 sixes and it gets crazy.
But to answer the original question it is almost certainly a 3.0/140 HP Mercruiser although it could be a GM Industrial. Same thing

 

My Vega in a highly corrosive environment.. Not HAMB compliant. But I liked it and don't care what anybody says

 

Back in the seventies I was talking cars with someone at a diner party. His name was Cliff Collins, the Collins part of Harmon Collins racing cams. In 1962 he and a partner were in the process of modifying some 327 HP heads to use on the 153 engine. The racing rules changed and the heads were not useable. I don't remember the details. He later showed me a shelf of about 25 bare heads that were modified to run on the 153. Every bolt hole was plugged and new ones were added by installing tubes into the heads. I bought one of these heads but sold it years later without ever running it. There was also a cast aluminum piece that allowed the pushrods to p*** outside of the block. I have seen pictures of engines with V8 heads and wondered if they were part of the batch I saw on the shelf. So in answer to your question, YES, but not without a lot of work.

Charlie Stephens