Joined
·
4 Posts
I have figured out the CPL # 0858 with help from here. But I do believe that the serial is on the info plate correct? Mine is gone how else would I figure the serial?
How would I find a serial number for my 4bt
1 - 17 of 17 Posts
I may be able to help you some. CPL 0858 was a very common one used in road vehicles. There were different specs on certain parts depending on application. One version came on the Ford E350 vans. Generally, you will see it with a top mounted turbo and a belt driven vacuum pump. It would have a transmission adapter with a small block Ford bolt pattern and a flywheel for a manual transmission. The GM units came in 2 designed. Both those version will usually have the turbo mounted in a low rear position. That turbo tend to have a different sized turbine housing. Normally, no vacuum pump on those. The transmission adapter is a standard GM on both versions. The difference is one come with parts for the TH475 that was found in GM P30 van. Maybe 10% of the vans had a manual transmission and those have a GM flywheel. Have you got a photo of your engine? If you can tell me which engine style you have I have ESN's for them. If the data plate is missing from the front gear housing, the engine serial number (ESN) is sometimes stamped on the rear of the block just below the head. This happens only when Cummins has rebuilt the engine. You mention the CPL and the injection pump can give a clue to that number. CPL 0858 changed injection pumps a lot over the years when it was produced. There were about 8 or 10 different numbers for that CPL.
Joined
·
4 Posts
sorry for the late reply
Yes it would be a gm one I believe but it did not have the trans adaptor or flywheel but the turbo was lower mounted and it does not have a vacuum pump. sadly no stamp on the back of head
I'm in the process of buying main bearing but idk which ones I should get. it seems to be based on serial numbers.
No, bearings are pretty much universal unless the crank has been reground. To determine that you'd need to measure main and rod journals. That is one reason Cummins wants the serial number in case the engine has been rebuilt previously. If there was a serial number on the engine it would be stamped on the block just below the head on the rear. That would only be there is Cummins had rebuilt it. If you can measure the crank journals I can give you the part number for bearing sets. You will also need new rod bolts as Cummins doesn't recommend reusing those. There are also bushings in the pin end of the rods that you may or may not replace. On a full rebuilt those are usually replaced and sized to fit the piston pins. There are also front and rear wear sleeves for the crank in case those surfaces have been damaged. Main or rod bearings come in standard, .25mm, .50mm, .75mm. and 1.00mm oversizes.
Joined
·
6 Posts
Hey folks I know this is old but it took me forever to find my SN. No plate, nothing on the back of the block. Looking at the front of the engine on the left just below the horn for the water pump and above the motor mount stamped into the block from the left I found them. Hope this helps someone.
That number on the engine won't help. Which injection pump do you have? From that there should be an ID plate on the pump that has a series of numbers. From that we can probably narrow down the CPL of the engine and find you a serial number you could use to buy parts. If the engine has been rebuilt you would need to measure rod and crank journals to be sure what size bearings are needed.
Here's a photo of a VE pump where you can see the ID plate.
![Gas Motor vehicle Auto part Nut Machine]()
Here is one type of ID plate.
![Font Material property Circle Metal Number]()
You see the number there 394 6371. That is a Cummins part number 3946371. Gives you something to look for.
Here's a photo of a VE pump where you can see the ID plate.
Here is one type of ID plate.
You see the number there 394 6371. That is a Cummins part number 3946371. Gives you something to look for.
Joined
·
6 Posts
If this is to me, just another day! long story. So far AgKits is letting me buy parts based on the piston #7163 and the connecting rod # 3901566. It has a VE pump but the numbers are currently smashed against the dog house due to having to lift the engine high enough to pull the pan to pull #4 piston that melted leaving aluminum all over the head and top of the cylinder.
A buddy that is lightly familiar with Cummins said those should be the SN, didn't find them until yesterday, after talking with AgKits. Fun days. I'll take you up on that offer for a usable SN when I can set it back down on the mounts. Step vans nice for room in the back but the dog house is a pain.
Assuming this is a road engine, the only CPL's with piston 7163 were 0857 and 0858. CPL 0858 was one of the most common ones. CPL 0857 was one with the aftercooler and it's not common. If you can get a look at the injection pump I might can narrow it down. CPL 0858 used a number of injection pumps. Ones that I know of were 3911242, 3914924, and 3917530. Also, is your turbo mounted in a low rear position or a top center one?
Joined
·
6 Posts
Good Afternoon,
The number off the injection pump is 391 7530. Boy that took some younger eyes than mine, kids do have a purpose beside eating. This engine is powering a 1979 step van it is not the original for the van. The turbo comes off the manifold between #3 and #4 below the manifold. It also has a hydraulic pump for the brakes and power steering below the injection pump which looks home brewed but worked for the 10 miles I was able to drive it.
Then you have a CPL 0858 which was one of the most common 4bt engines. If the engine serial number isn't stamped on the back of the block just below the head there is no way to know your specific serial number. If there were a number there it would mean Cummins had rebuilt the engine at some point in time. Here is a serial number 44541365 you might use to look up parts. It has injection pump 3917530 and came in a Chevy P30 van with automatic transmission.
Joined
·
6 Posts
Hey char1355, Thank you.
The step van is a P-30 with a th400 tranny, it would be fun to learn its past but for now dealing with it's present has been troublesome enough. Drove it ten miles before I found out all kinds of things, like radiators need a cooling medium, power brakes without hydraulic fluid work almost as good as power steering without hydraulic fluid. The 4BT can run on 3 cylinders pushing 6000lbs of 1979 at speeds of 50mph. I learned that when aluminum pistons melt it makes a hell of a mess in the cylinder and beyond all science aluminum can combine with a cast iron head. freakin fun days.
again, thank you.
Unless someone has changed it your transmission is not a TH400. It's a TH475 which is a heavy duty version of the TH400. Power brakes on those vans were usually hydroboost running off the power steering pump. If you lose power steering you lose brakes too. Makes for a fun ride on a steep down hill. LOL. And 50 MPH is pretty much top speed with 3 cylinders or 4 cylinders. Those vans weren't designed as highway cruisers.
Joined
·
6 Posts
It is supposed to be a 400 but I already have a 700 ready to go when I can get the Van in my shop just going to need a driveshaft made up for it. I can attest to the pretty much lack of brakes without fluid not just hard. if I wasn't on flat ground when the engine died I didn't really know if I could have got it stopped. When I test drove it I just assumed it was manual steering and brakes. I also assumed it would have water in the brand new radiator, he had drove it to meet me so wasn't about to open it to check. No tach so I don't know what the engine was turning but 55 was a bit too tightly wound. I am in Seattle so if it can do 30 on the freeway 80% of the time it will work as a local plumbing rig, the 700 will just give me a bit more.
You probably won't be happy with the 700. 4bts eat those for lunch and spit them out. Have to remember that is only a TH350 transmission with OD. It won't live long with the 4bts torque. About the only GM transmission that has had any success on a 4bt is the 4L80e or the 4L85e.
Joined
·
6 Posts
Sounds like just more poo on my plate. I am going to try the 700 because I have it. the next step for me would be the rear end finding a taller set. I would like to be able to run 60 when I can, targeting the 1800-2000rpm range. This machine as a whole is my effort to rid my ride of the dang silicon mafia. So anything beyond a park/neutral/reverse wire loom is out of the question.
1 - 17 of 17 Posts
