question about swapping ip

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Re: question about swapping ip

Postby BobS » Wed Aug 21, 2013 5:27 am

DodgeFreak wrote:wouldn't it be easier to swap the ksb on the injection pump to match the original circuit that's with the truck?? or am I missing something?


No. He will still need to duplicate either KSB circuit when he does the engine swap swap into the other vehicle. This is provided that the KSB circuit may be used on a vehicle that would ever experience a colder winter environment. Using the industrial wiring set up takes about 5 minutes to do. Also, when using the KSB circuit in a conversion a relay should be incorporated due to the KSB current draw.

Here is how the other route usually ends up. "I swapped the KSB on my pump and now the gasket where it bolts on leaks. Then I bought a reseal kit so I figured that since i had the kit I'd do a complete reseal. When I went to put the pump back together I lost the [part name]. Where can I get one quickly?" or "After doing the reseal it won't start" or "After doing the reseal it won't idle"
Then after a ton of advice that leads to more frustration; "Well i tried all of that and ended up taking it to a pump shop where i paid $700 to get the pump repaired."

So, to ME in my opinion, running a circuit that costs less than $5, swapping a KSB switch, and 10 minutes of time is a lot more efficient than gambling what usually follows. And in 7 years time of being on another "engine swap" forum I have seen the above senerio too many times.
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Re: question about swapping ip

Postby depogrig » Wed Aug 21, 2013 5:40 am

I thought I read somewhere that the non wax motor ksb relies on a temp sensor on the head to tell it when to stop advancing?
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Re: question about swapping ip

Postby BobS » Wed Aug 21, 2013 6:06 am

depogrig wrote:I thought I read somewhere that the non wax motor ksb relies on a temp sensor on the head to tell it when to stop advancing?


The temp sensor IS the KSB switch. When you match the KSB temp sensor switch to the pump and run the simple circuit above you do not have to even know the theory of the KSB circuit and KSB sensor switch of being either "normally open or normally closed" when you know the pump type. It's far easier to remember to match the 2 components than confusing some folks with the theory of operation.
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91.5 W250 NV4500 Conversion
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86 D150 wannabe 4BT http://4btswaps.com/
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Re: question about swapping ip

Postby depogrig » Wed Aug 21, 2013 6:12 am

So just pull the wax style sensor and replace it with the sensor for the electromagnet ksb and wire up like you said? Sorry this is my first diesel, I'm trying to learn. Thanks for the help. I'm not doing anything yet. My truck is still running with the non I/c pump with a drip at the head. I've got the spare I/c pump now plus I already have the seal kit. I was going to do a re-seal on the spare pump. Then I would just have to pull the pump off the motor, swap DV holders and install ic pump.
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Re: question about swapping ip

Postby BobS » Wed Aug 21, 2013 7:42 am

depogrig wrote:So just pull the wax style sensor and replace it with the sensor for the electromagnet ksb and wire up like you said?

Correct. On the firewall end of the engine intake cover on the IC'd engine you will find a finned aluminum thing with wires coming out of it. This is the resistor that you add to the circuit in series with what I previously listed. On a scale of 1 to 10 I'd rate the difficulty of doing this at a 2 or less.
BobS

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91.5 W250 NV4500 Conversion
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92 W250 Crew Cab finally in progress
86 D150 wannabe 4BT http://4btswaps.com/
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Re: question about swapping ip

Postby depogrig » Wed Aug 21, 2013 11:56 am

I can't find a picture online or part number for the resistor. Can anyone help me out?
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Re: question about swapping ip

Postby BobS » Wed Aug 21, 2013 3:35 pm

OK, it looks very similar to this:
Image
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Creating jobs is a byproduct of making a PROFIT!

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86 D150 wannabe 4BT http://4btswaps.com/
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