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I blew up my Detroit
- Thread starter Rustyfender
- Start date
Rustyfender
Well-Known Member
Oh never thought of that! I was told it was a 453, how can I tell for sure
Air box covers are 71 for sure.
Bob
Last edited:
kshansen
Senior Member
- Joined
- Mar 11, 2012
- Messages
- 11,165
- Location
- Central New York, USA
- Occupation
- Retired Mechanic in Stone Quarry
One easy thing to check is how the Valve Cover is held on. 4-71 will have two large knobs up on the top at the center line of the cover unless it's a newer engine with the cast covers then in place of the large knobs it will have two bolts almost always with 12 point heads on them, thinking a 3/8 wrench fits them.
Where a 4-53 will have three small screws or bolts at the outside flange of the cover either 3/8 or 1/4 inch, been many years since I worked on one!
Made a correction as I found some pictures, I originally wrote that the 4-53 would have two screws on each side but it should be three. I'll attach some pictures to show each:
Top picture shows the red arrows pointing to the holes for 4-53 valve cover hold downs
The bottom shows the two large "knobs" for the 4-71. Now if it was a newer cast v.c. there would be 12 point bolts where those knobs a in the picture. If needed I could post a picture of that too!
Where a 4-53 will have three small screws or bolts at the outside flange of the cover either 3/8 or 1/4 inch, been many years since I worked on one!
Made a correction as I found some pictures, I originally wrote that the 4-53 would have two screws on each side but it should be three. I'll attach some pictures to show each:
Top picture shows the red arrows pointing to the holes for 4-53 valve cover hold downs
The bottom shows the two large "knobs" for the 4-71. Now if it was a newer cast v.c. there would be 12 point bolts where those knobs a in the picture. If needed I could post a picture of that too!
Last edited:
Rustyfender
Well-Known Member
Whew thanks guys
mountainguyed67
Senior Member
What little bit I can see looks the same as my engine. Go to my thread, there are plenty of pictures you can use to compare. Plus you’ll get a feel for what was being said about the block may be the same, but different things are bolted to it.
Simon C
Senior Member
- Joined
- Jul 1, 2015
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- 679
- Location
- Rocky Mountain House , AB., Canada
- Occupation
- Heavy Equipment Mechanic
Yes just seen your pictures. Definitely a 4-71. 53's have horizontal air box covers. The water pump on 53's runs off the front pulley.It sits above engine oil cooler. A 4-53 Blower runs off of a drive coupling attached to the rear gear train with a 6 inch or so shaft turning the blower through a flex coupling. This 71 has Dry Fit Liners not wet liners like on 53's. 71 Oil pump is inside pan whereas on 53's it is bolted to front of block on dowel pins. Makis Diesel in Thunder Bay Ontario has tons of experience on these if they are still around.
Simon C
Simon C
Simon C
Senior Member
- Joined
- Jul 1, 2015
- Messages
- 679
- Location
- Rocky Mountain House , AB., Canada
- Occupation
- Heavy Equipment Mechanic
Late model 53's also had aluminum valve covers with 12 Point head capscrews going into head. They were excellent for not leaking. They were usually found with crosshead pistons and turbos. Did quite a few of them.
Simon c
Simon c
willie59
Administrator
Hell yeah, bonus that's a 71 series. IMHO, 71 series would sing, they have a tone. 53 series was just noise, just plain old noise.
Well, i missed that
. Have been around and worked on both engines and missed the shape of the air box covers. Apparently my memory is failing- just like my wife says. I hate it when she's right lol. I'll just have to look more closely next time although i'm still wondering about a liner issue
. Have been around and worked on both engines and missed the shape of the air box covers. Apparently my memory is failing- just like my wife says. I hate it when she's right lol. I'll just have to look more closely next time although i'm still wondering about a liner issue
Rustyfender
Well-Known Member
Well I knew it is a Detroit , that's about it!!!
Rustyfender
Well-Known Member
mountainguyed67
Senior Member
You’re moving way faster than I was able to. I don’t have other equipment to lift with for one thing.
Rustyfender
Well-Known Member
Ha! well mine is only 15 minutes away, and I think my progress will slow down now as I am afraid I will have a mess inside this engine.
mountainguyed67
Senior Member
Was the engine partially under the cab? How much? Because my engine was so much under the cab I didn’t try to remove it without pulling the radiator and hard nose, I see you left your hard nose on. I can’t tell if you removed the radiator.
Rustyfender
Well-Known Member
I was lucky I got it out leaving the rad intact. Also I have a driveshaft fron engine to transmission so that helped a lot.
I remember we had a 7220 Terex loader and the torque converter was driven by a ring gear ,we had to replace it, so we had to do everything you did removing the old 471. it was not so bad 35 years ago with helping hands .
I remember we had a 7220 Terex loader and the torque converter was driven by a ring gear ,we had to replace it, so we had to do everything you did removing the old 471. it was not so bad 35 years ago with helping hands .
Rustyfender
Well-Known Member
The engine was just between the rad and the battery box, not underneath at all.
willie59
Administrator
It's been years since I've been inside a Detroit, but IIRC correctly, the 53 series had dry liner bores in the block, but the 71 series had wet liners bores at the bottom of the bore, requires an o-ring seal to keep coolant in the water jacket of the block, o-ring failure will allow coolant into the oil pan, fairly common failure of an aged 71 series.
