Available for the 2001 2002 24 valve cummins engine equipped with the 47re automatic transmission.
Cummins j hook.
Each cummins generator has a model spec number description which is shown on the serial number tag attached to the generator.
An aftermarket hook will keep the wastegate closed longer which allows for higher boost.
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Story by mike mcglothlin.
The j hook uses a spring connected to the wastegate lever which controls the max boost pressure at which the wastegate opens.
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Surges around 26psi but wide open doesnt surge at all.
I have a 2001 ram 2500 with edge juice w attitude k n rv275 injectors from tst air dog fuel pump and now a j hook.
Despite all the performance potential and well documented durability the b series cummins is known for a lot of folks tend to overlook its shortcomings.
Mine is from the top probably easiest.
I have the tst and the j hook on mine just watch every once and a while mine seems to come loose and when i romp on it it acts like it has a miss.
The j hook regulates the waste gate facilitating greater boost numbers which rise even higher as performance modifications are added.
Awesome bang for your buck.
5 fatal flaws of the b series cummins.
The higher volume of air will also help keep exhaust temperatures down.
Before the j hook on stage 3 i would reach 21psi of boost 1200 degrees egts.
Installs much easier than the bully dog j hook and you dont need to pre tension the spring.
I just installed my j hook today.
Im very happy with it now peaking at 35psi now just need injectors to help heat the egts up haha.
I think the vibration of the engine and the crappy roads around here jiggle mine loose because i have to go out and push on the hook and pierce the wire again.
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This is a great product.
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Here is a representation of the tag on onan qg 4000.
Note the highlighted letter code in this case p which denotes the specification type of the particular generator which can then be referred to as spec p.
