Halo, I have really appreciated all of the help that I have recieved from this forum. I was able to get my 1964 2.4 ltr Borgward b2000 A/O running and driving. ..... Until just recently. After examination with a borescope it shows some problem with the #1 cylinder and that piston is not moving up and down as it should. I think that I have broken a rod. I am in the process of removing the motor and will get to inspect it soon. I live in the United States and unfortunatly there are not an abundance of replacement motors or parts. My question is what engine swaps have been done and which engine might I find in the US to get my Borgi running again?
Gasoline engine kaputt
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Hello George,
sorry for that trouble.
I think the best is to dismantle the engine to detect which parts have failed.
Fortunatelly you can get nearly all parts from
Matz Autoteile
Even if not all available parts are listet on their homepage, you can ask if more is available (usually it is).
May be you can post some picture of your dismantling, so the 'community' here can trace your situation and provide some helpful advices.
regards
Peter -
Please have also a look on the german ebay-shop of Matz
Unfortunately I didn't find the piston rod online but you may ask directly at Matz.
regardsPeter
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I know someone in the US who may be able to help you. Sent you a PM
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Greetings. The engine has been removed and placed in my truck. Ill take it to my shop on tuesday PM and start the tear down. I will take pictures for the post and hope to have a prognosis soon.
Instandsetzer2--I contacted your friends and he has a bare block we will see if I need to go that route. Thanks.
Being the cosumate pessimist I am wondering what other engines have been fit into the b2000 frame in the event that I need to engine swap? Mine is still 24volt and I would like to keep it that way. I don't know if I could swap in a Cummins 4bt. Maybe? Any recommendations will be appreciated and pray that my engine can be rebuilt at a reasonable cost. Parts from Germany will be pricey and I think they will have a stiff tarriff.
Peter-- Thanks for your help as always.
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Hi George,
hope you can fix your engine soon and easily.More than 30 years ago I changed my engine to a Mercedes OM617 engine (which is also common in the US)
There where a lot of adaptation necessary, the most difficult was a new clutch housing and the replacement of the oil-filter.
I have 4 short videos on Youtube explaining the detailsPeter Guthörlwww.youtube.com(activate subtitles and choose automatic translation - thats not too bad)
I think the cummins 4b is not suitable as the rated speed is only 2500 rpm instead of 4000 rpm of the Borgward-engine. On the other hand the torque will overload the Borgward transmission.
The challange is that the engine compartment is very narrow in the back and you need a very small engine in that area.If you have any question please feel free to raise it.
regards
Peter
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Good evening from Colorado USA. After removal of the Borgward engine's oil pan it became evident that the number one cylinder has suffered catasrophic damage. It appears that the rod was initially bent as a result of hydro-lock and the rod bolt gave up causing the piston to drop further into the cylinder than designed for. The bottom of the piston sheared off at above the piston pin and the piston broke the skirt of the cylinder, wedging itself between the block and the crank. That is why the bore scope was able to go into the crank case from the spark plug hole. The engine block is damaged beyond repair. The crank looks as it suffered some damage but it is irrelevant as the block is not salvagable. I am looking at an engine swap and the best candidate at this point is either a Ford 300 I6 (gas) or a OM 617 (diesel)



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Oh, that sounds dramatic.
Is the block actually structurally damaged or just the cylinder wall?
Perhaps it would be worth considering fitting a liner there. But of course, you need a new piston and a new piston rod - and the crankshaft must still be intact.
When changing the engine to a different type, you should consider replacing the gearbox at the same time. The engine suspension in particular can be affected, because the Borgward engine is suspended at the front and rear, whereas modern engines (including the OM617) are suspended in the middle.
I built a new clutch housing as the rear suspension for my OM617 and mounted it on the original support points at the front.
And the tiresome issue with the oil filter.
regards
Peter
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Hi Peter,
It has damaged the lower skirt of the cylinder and broken about 1/2 of the lower cylinder wall. In my experience this is serious damage which might be fixed with cylinder liners which would be an expensive proposition.I intend to tear down the engine and see the full extent of the damage and will concider sleeving the engine. I am also going to explore the swap option as being in the USA that will be easy to source parts and installation. Additionally I am familiar with the Ford 300 I6. (I am measuring to see if it will fit the space and how much fabrication will be necessary).
The Ford 300 I6 is a Highly reliable, durable, and torque-rich inline-six engine produced from 1965 to 1996, known for its "bulletproof" reputation in workhorse applications like F-Series trucks , Broncos , and E-Series vans . While not a high-performance engine for speed, its dependable, low-end torque made it excellent for heavy loads and towing .The block is a little longer and the associated transmission is shorter. I might make it work we will have to see at what cost and expense.
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Interesting indeed.
Seems that the oilfilter also needs to be moved.
Be carefull as the torque is more than double of the Borgward motor.
Especially the rear axle shaft is weak and sometimes fail also with the Borgward motor (which have a max. torque of 165 Nm).
But I guess there are no such small motors as the Borgward motor in the US

regards
Peter
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Thanks Peter. I will be cautious with the torque on the 300. It will be backed be a T18 4-speed transmission with a granny gear 6.32:1. I have lloed at the options and all of the current motors are mostly v8's or v6's and 4 cylinder turbo charged. They have a lot of computers in them and I'm going to keep it simple. 120 hp at 3,000 RPM and approximately 240 lb-ft of torque. I have thought about the differance in the torque and it is equal to 325 Nm of torque. My worry is the transfere case and the axles. Do you have any ratings on those? I am running the Unimog 10/10.5 x 20 military nondirectional tires and that will add strain to the drive shafts axles and gearing.
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Despite my best efforts the Ford 300/4.9L inline 6 engine will not fit. The distributor is too wide to go in between the foot wells. As a consequence I have opted for the Ford 250/4.1L inline 6. A much smaller motor and the distributor is in the front of the motor. I will pair this with the Borg-Warner T18-1E transmission. The whole package will be moved rearward about 4" from stock. The 250 has 87 hp (65kW) @3200 rpm (SAE net) and 174lb-ft (236Nm)of torque @ 2,000rpm. These numbers are more in line with the original motor. The Transmission is as follows; 1st gear--6.32 : 1, 2nd gear--3.09 : 1, 3rd gear--1.69; 1, 4th gear--1 :1, R 7.44 : 1. I think the rear/front differential is 3.73:1 or 41:11. This wont be a speed demon but will be a fun ride. It has 10.5/ 20 Unimog tires and wheels.
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Hi George,
the gear ration of the your Borgward-Axles is 7 : 36 (1 : 5,143). The vehicles with original diesel engine - B 522 A/D - have a ration of 8 : 35 (1 : 4,375). Unforunately the diesel-axles are very rare (and shipping might be a little challenge), but this would be the easiest way to change that ration.If changing to 10.5 - 20 it might be helpfull to lift the axles a little bit (ca. 40 mm) to avoid undesiralbe contact to the car-body/Inner fender.
regards
Peter
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Thank you Peter. When the original motor ran I was able to drive a bit. The 10.5 x 20 tire did not rub in any places. My assesment of the block is that it might be able to be sleved but that would be an expense I can't afford. I am going to swap in the Ford 250 i6 and a Borg-Warner T18-1E transmission. I have the original motor and Trans if someone might want it. Shipping will be very expensive though. Just throwing this out there.
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The Ford in line 6 4.1L/250cid with the T 18–1 E will fit. The motor needed to go back approx 1.5" and necessitated the firewall be reconfigured. The width is about .5" wider than the sheet metal for the transmission cover that will be the only issue and will need some fabrication work. The Mount towers were moved 3.5" back to keep the original radiator in the original location. All in all a good fit without much modification. The transmission brackets were removed and the frame will be boxed to add strenght. There is a 24 volt starter avaliable (Ford small block 164 tooth ring gear) for this (made by Grease junkie in the UK) and the Distributor will be converted to 24 v. Clearances are good and Being in the USA will make parts and maintance easier. Original generator will be used with a mounting plate and bracket.Motor rebuild is next.
.





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Your modifications are very interesting. Please continue reporting. I'm curious to see how the car performs. Hopefully, the transfer case and axles can withstand the power.
(to get better imagination I have to recalculate the imperial measures to metric measures
)regards
Peter
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