An A pump can be used on a road application. It's a matter of how much power you plan on. That pump with an RQV governor is not all that common. The A pump can be modified to produce huge amounts of power but few if any ever go that route. You might get it up to around 200 HP without major changes. Depends on what turbo you have. Would likely want to change the governor springs to 3000 RPM to help with gear shifts. That is the same governor as found on the P7100 pump. That a pump likely only has 9.5mm plungers which will limit how much fuel it can pass to the injectors. The stock P7100 has 12.0mm plungers. That's a huge difference. Changing to a VE pump cost you between $2000 and $3000. You'd need the pump, lift pump, fuel plumbing, front drive gear, front gear housing, injection lines, and injectors. That adds up to a lot of money.
4BT Should the A-Pump be Swapped
I have a 4bt with an A-Pump that has the RQV governor on it. I know this is the better governor to have. My question lies because the injector pump is needing a rebuild and I am trying to decide if it worth it to change it to something else being most other pumps seem to have a lot more knowledge surrounding them.
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I so wish I had the serial. The CPL plate of course isn't there either. I, sadly, don't have a ton of information on this engine. My dad works for a big Construction company and they had this engine laying on it's side with one injector pulled in the back of their yard. This picture is the closest I have to any type of serial. It seems to have been rebuilt at some point.
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I was all ready to tell you guys I couldn't find the serial as I have looked before but decided to check one more time and this is what I found.
I was worried about the injector being pulled as well but after a compression test and I have the oil pan off currently I don't know what else it could be. Compression read 360 on all cylinders except the 2nd was reading 400 even.
It reads 60124702 P
Yeah, that fan hub has been in demand for years but so far the Chinese haven't started making one. About the only application was the '91.5-93 Dodge intercooled engine. And it would be exceedingly rare to ever replace one. The fan and clutch are not so big a deal and those you can find at the auto parts store or Dodge dealer. But even those 2 parts sell for around $300 in the used market. If you had a long time Dodge dealer local to you it might be possible they have those parts gathering dust but wouldn't bet on it. Have to remember those parts are 30 years old. Lot of money to gain about an inch of radiator clearance. Here's what the difference in the 2 pulleys look like.
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I screwed up, by stating "cutting" mounting flange, instead of pulley, the pulley being steel can be cut & welded, as too reduce its height down to the shorter and older pulley configuration shown in the images posted by char1355
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On my build, I used a 3rd gen Cummins hub mounting bracket, the idler pulley mounting ear on the 3rd gen bracket can be removed or left in place.
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On my build, I used a 3rd gen Cummins hub mounting bracket, the idler pulley mounting ear on the 3rd gen bracket can be removed or left in place.
Welding cast iron is not a fun thing. Can be done. Then you have to come up with a custom pulley mount and the pulley. Here's the diagram for that fan hub. About the only common part in that unit is the bearing and the bolts.
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