Origin of power stroke engine

Turtle n Peeps wrote:


Name ONE diesel engine that shares half as many parts as the 5.7 Olds diesel does with a gasoline engine and I will believe you!!

The GMC V6 back in the 60's had both a gas and diesel which used many of the same castings. Unlike the Oldsmobile I believe the block and crank were identical.

RCMAN46 wrote:
My bad!

The Oldsmobile 350 Diesel did in fact have 10 head bolts per head.

When I looked up Oldsmobile heads I miscounted the head bolt holes and will blame it on getting to old to accurately see what I am looking at.

A man who admits mistakes. Need more like you.

My bad!

The Oldsmobile 350 Diesel did in fact have 10 head bolts per head.

When I looked up Oldsmobile heads I miscounted the head bolt holes and will blame it on getting to old to accurately see what I am looking at.

You claim to own 5 oldsmobile 350 diesels.

I don't claim anything, I do own 5 of these engines and a bunch more parts.

Have you ever had one torn down?

Yep, sure have.

If you had you would have found the heads have 13 head bolts. Where did your claim of 10 come from?

Really??? You need to immediately call Summit racing and tell them that ARP is ripping their customers off!!! Olds 350 5.7 diesel stud kit.

The heads were not gas heads as they have a pre combustion chamber and two holes in the pre combustion chamber for the injector and glow plug. This required a completely new head.

No kidding? Really? They also don't have spark plugs so that must really make them clean design diesel heads hu? LOL, NS they have pre combustion chambers!!! It's a diesel!! They just pour a bit more cast iron in the chambers of the gas head, plug the SP holes and add injector holes and wa la, instant diesel head.

The main problem that Oldsmobile had was the head bolts. Had they corrected this problem and used high strength studs early on the engine may have had a better future.

Aaaaaaaaa no. If you know anything about the 5.7 diesel you would know that the ARP bolts fair better than their studs in this engine. BTW GM had 3 versions of TTY bolts for this engine. They got it good but never got it perfect even with their 3rd gen design.

But you will find Ford did try the 10 bolt head with their 6 l diesel with head gasket problems.

Well, you did get one correct!!! Good for you!! And just for your knowledge, the 6.4 also had 10 head bolts / head. :B


The bottom line for the 5.7 diesel is: I can bolt A BUNCH of parts from a gas Olds onto my diesel and vice a versa. Hell, they even left the distributor hole in the block from the gasoline engine and plugged in a vacuum pump in place of it for the diesel.

Name ONE diesel engine that shares half as many parts as the 5.7 Olds diesel does with a gasoline engine and I will believe you!!

I looked at a Frod back in 91-92 when I bought my navistar, the Frod came with a B5.9! Along with LONGEST wheel base for bedlength I wanted, LONGEST turning radius, even the same WB was LONGER than most/ALL other makes I looked at. Hood was horrible to look out over, 30' from front bumper to where the driver could see the road, vs 8 for Freightliner, and 10 or so for the navistar I bought. Least amount of window sq inches, felt like a dungeon........What is the saying, only bought it for the engine, body was an afterthought! Thats how it would have been with the frod.

But that was 20 something years ago too. New Frods are better, but not much better in the MDT relm of things.

Marty

I think it's great that people know so much about what others drive and like.

Just makes me feel all warm and fuzzy inside about the camaraderie on this forum. :)

Cummins12V98 wrote:

blt2ski wrote:

Cummins12V98 wrote:
"Origin of power stroke engine"

MEXICO

Friend one. Navigate supplied ones were here in states. At least NA supplies vs Asian!

I should have said 6.7 PS

And comment was mostly for Fish's benefit!

The cummins has been tossed in favor of the Power Stroke for the new F650 and F750 series trucks. Production on these new trucks are now in the US (unlike your taco eeerrr con todo RAM).

Link

This comment was mostly for cummins benefit so he's knows the Power Stroke has replaced the cummins in the F650/F750 trucks.

Turtle n Peeps wrote:
OP, the Powerstoke first came out in 1994. No gasoline redesign here. It was a great design for the time, and state of the art with juice injection and a pure clean sheet diesel design from the get go. Even to this day they are a great engine. Down on power for today’s standards, but still a great engine.



As far as any other diesel engine being a gas redesign. That will depend on semantics.
I own 5 of the Olds 350 diesels right now, and I say yes, they are a redesign gasoline engine. Why do I say that? Because most of the gasoline parts bolt right on the diesel. Same bolt spacing, same amount of head bolts, same water pump, same oil pan, same oil pump, same exhaust manifolds, same valve covers, basically the same heads minus the spark plug holes.
The blocks are even the same with some metal added here and there to put a stronger larger forged steel crank in place. They also put in a bit more metal up front so they can bolt the IP to the block to run off of the cam.
As far as how they came about? I read a story about an engineer that was in on that deal. It went like this:
It was 1976 and the Beetles were out and Donna Summer and the Bee Gee’s were in. Gas was at a very high price and the Japanese were cleaning our clocks with 260Z’s and Celica’s. Oh sure, we had Vega’s and Pinto’s. :R
GM had a bunch of tuna boats that used gas like a sailor drinks beer. They knew Americans loved their BIG cars but could not deal with $1.25 per gallon fuel prices. Then it hit one enterprising engineering person. What about a diesel engine? Great mileage and next to no smog to deal with!!!! Brilliant idea!!!

One problem though. They needed and engine like right NOW, but they did not have one or the time to design it from scratch. The engineer thought that they could use an existing design and be in production in less than 6 months. The Olds was a great start because it was a great strong engine to start with. So they took the same block design and changed a few things with it like casting a bit more metal here or there and put an injection pump on it and there you have it, a 350 diesel!!! Pretty smart really!

The little diesel came through with the mileage (my 6000 lb Caddie gets 30 MPG on the highway!!) Remember, back then diesel was ½ the price of gasoline. So you could ride in luxury at 60 MPG gas prices!!!!!! What a great deal!!!

Then the problems started. With only 10 head bolts to hold the head on they were good to go with an 8.5 to 1 gasoline engine. But with a 21 to 1 diesel, there was nothing but problems holding the head gaskets in place. Then there was the cold start problems. With 40 weight oil in the crank case and at 30 below zero these engines did not start too well. The people back then did not know any better so when their car did not start they did what they always did………………use a can of “mothers helper.” Well the ether collapsed the ring package and that lost even more compression and then you had to use ether at 70 degrees! That is where the idea of “my diesel is addicted to ether” came from.

All in all, these engines are junk. The only reason I like them is for the mileage they get and the fuel they can burn. That, and I know how to band-aid them up so they will last and run forever.

That is how the 5.7 liter diesel came into existence! Now you know the rest of the story! :B

You claim to own 5 oldsmobile 350 diesels.

Have you ever had one torn down?

If you had you would have found the heads have 13 head bolts. Where did your claim of 10 come from?

The heads were not gas heads as they have a pre combustion chamber and two holes in the pre combustion chamber for the injector and glow plug. This required a completely new head.

The main problem that Oldsmobile had was the head bolts. Had they corrected this problem and used high strength studs early on the engine may have had a better future.

But you will find Ford did try the 10 bolt head with their 6 l diesel with head gasket problems.

trail-explorer wrote:

RCMAN46 wrote:

tvman44 wrote:
GM is the only one I know of that ever converted a gas engine to diesel and all I ever heard about them was bad.

You need to get your facts straight.

Here is a good article explaining the problems Oldsmobile had with their 350 Diesel. It was not a converted gas to diesel.

Oldsmobile 350 Diesel

that page was useless.

Sorry about the bad link. The word c r a p p y used in the link and for some reason this forum does not allow the use of the word.

http://www.sub5zero.com/great-moments-c r a p p y-engine-history-oldsmobile-350-diesel-w-video/

Copy and paste the above link and remove the spaces in the illegal word.

blt2ski wrote:

Cummins12V98 wrote:
"Origin of power stroke engine"

MEXICO

Friend one. Navigate supplied ones were here in states. At least NA supplies vs Asian!

I should have said 6.7 PS

And comment was mostly for Fish's benefit!