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STAINLESS DIESEL A2390 | 3.00" 2G INTERCOOLER PIPE - "SD PIPE" - 3G SINGLE CUMMINS
**STAINLESS DIESEL ITEMS ARE NON-RETURNABLE**
THIS INTERCOOLER BOOST TUBE IS DESIGNED TO ALLOW YOU TO ADAPT FORWARD FACING (3G STYLE) S300 COMPRESSOR COVERS TO 2G INTERCOOLER.
Intercooler pipe that fits a 2G truck '94-'02 with a 3G turbo cover. (HE351 or 3G style turbo)
(**Single turbo applications only!)
****CHECK OUT THIS AWESOME WRITEUP BY OUR FRIEND "MOPAR1973MAN" OF HIS BUILD USING THE STAINLESS DIESEL PIPE!***
Start pulling the old turbo off
Use PB blaster or similar on the flange bolts for a few days prior to removal.
Double nut the two bottom studs and remove them. Take your time use PB Blaster or similar.
Bolt the adapter flange to the manifold. The short boltss go in the bottom and the long bolts with the nuts attach the top holes of the flange. You will need to use the hx35 exhaust gasket between the manifold and the first section of the Adapter plate.
Next if your truck is like mine (auto) there is a hard coolant line just behind the exhaust manifold that will block the rear most bolt on the adapter flange from being used. you can see the bolt hole in question.
Use the 5/8" coolant hose and a 5/8" T fitting to remove the hardline and replace it with the coolant hose. You will need to run this to just in front of the oil filter and also to the output of the coolant line from the HE351ve.
Next you need to remove the old downpipe if you don't already have an HX40 style installed. this is a PITA to say the least. I had to cut mine out. The hx40 style downpipe flange will attach to the back of the he351ve without the elbow.
Next it is time to pull apart the turbo into it's 3 sections. The turbo weights a lot so it is much easier to install it one section at a time. There are 2vband clamps that hold it together, one fo the compressor housing and one for the exhaust housing. Once the turbo is apart attach the other half of the flange adapter to the exhaust housing of the turbo. You will need to install one of the he351ve gaskets between the flange and the turbo. Use the long bolt for the through hole on the exhaust housing. I also had to cut one of the bolts to make it fit better. Without cutting the bolt I couldn't clock the center as nicely as I wanted. Ensure you remote the allignment dowels out of the compressor cover and exhaust housing. This will allow you to clock the turbo as you need.
Once you have the flange tightly bolts to the tubro you can install the exhaust housing. ENSURE you put the last he351ve tubo gasket between the 2 sections of the adapter flange. It is somewhat hard to center it, but not impossible. Tigten down the 4 allen head bolts supplied with the kit to hold the flanges together. You will need to tighten them very tight.
In order to allow for a more vertical position of the center section I cut off the top of the strut nut. This will allow you to clock the center section of the turbo to within the 30* off vertical for the oil drain spec'd by holset.
Next you need to install the Center section of the turbo.
I would practice this beforehand on a bench to get the feel for it
Take your time doing this as the fins on the vgt section must slide into the exhaust housing in their slots. This can be tricky, I found it best to extend the vgt all the way out and then try and sldie it in gently by rotating slightly. Here you can see the Center Section installed. Notice the clocking of the center section. You will need to loosed the oil supply line and rearrange it to make it bend nicely.
Follow the hard oil drain tube down the the rubber joiner and remove the clamp holding the hard tube on. You will slip your PFE hose into the joiner and tighten it. This hose is not under pressure so you just need to ensure it is a good fit. Run your pfe hose to the oil drain on the turbo, using a hose clamp to hold it on.
You can see in this picture that I just reused the OEM banjo bolts for the coolant connections. I used a hack saw to cut the braided section off so it was just a solid metal banjo bolt. I then just pushed the 5/8" coolant line over and used a hose clamp. I will do an fittings at some point, but for now this will work.
Then install the Compressor cover onto the turbo. Be careful not to damage the compressor fins. Once the housing is on tighten the vband clamps tight enought to hold the housing, but nto too tight as to keep you from rotating the housing.
Use the preferred method of connecting the charge pipe, I choose the stainless diesel pipe and a 2.75" to 3" reducer then reused the oem 3" to 3.5" elbow at the intercooler. Align all boots and tighten down the clamps. Once everything is lined up tighten the vband clamp so that the compressor housing can't move.
Note the position of the passenger side neg battery cable to the engine block. I might have to redo this with a new longer cable, I have been meaning to anyways, but I haven't gotten to it.
Hard to see in the picture but run the other coolant line into the bottom of the turbo and T into the other heater core line. Ensure you leave some space between the exhaust manifold and the coolant hose. You might use zip ties or something similar to hold the hoses together. Then install the air filter and you should be good to go. Check for any coolant or oil leaks.
there you go the holset he351ve has been installed into your 2nd gen Cummins.
Posted by Theron Andrus on Dec 21st 2019
When replacing your 2nd gen turbo with a 3rd gen turbo (2003-2007 dodge) it fits perfectly and lines right up, you will need to purchase the 2.75 inch to 3.00inch boot as well for connecting the pipe to the turbo.
Posted by Terry Fry on Jul 12th 2019
Pipe is high quality and fits nice
Posted by Unknown on Mar 13th 2015
This is a must need if you are want to put a 3G compressor housing turbo on your 2nd gen cummins.