Has anyone here done either one of these swaps on a 2nd gen? Already have the turbo and supposedly all required parts. Looks like 3rd gen manifold moves the turbo down and back. Also want an exhaust brake on the future. Anyone here have experience with these swaps?

 

Subscribing. Curious about the same ideas. What hp or tasks are you looking for from your truck horselady?

 

Tow 15000 plus, have some fun. No drag racing or sled pulling. Although I am very much looking forward to the south bend clutch so I can try my quadzilla on level 9 again. I was starting to worry about my oem turbo with 260k on it. Was going to go with a 35/40 hybrid. Read on another forum this swap was the better way to go and there are a lot of mods that can be done to this turbo. It was on a 99 but he had it clocked to clear his heater tube. ( I dont have the same heater tube and mine doesnt interfere) so I have to do something different in the intercooler hose since I wanted to keep the waste gate.

 

I have done this swap and run a 3rd gen manifold. Its alot more work than running the 2nd gen manifold. Using a 2nd gen manifold, everything will bolt up, stock air box, 2nd gen oil drain, exhaust (need a 3rd gen exhaust flange, weld onto the 2nd gen down pipe), stock oil line.

The 3rd gen manifold, you will need to run a drain line into the back oil drain, just like the 3rd gen's do. You need to run get a custom oil line for the turbo. The stock 2nd gen air box will have to modified to fit, the 3rd gen air box fits in were the 2nd gen battery is. Not sure on the transmission oil cooler, mine been long time moved up front.

 

Do you feel that you gained anything by switching to the 3rd gen manifold?

 

Not sure if there is anything to gain from running the 3rd gen manifold vs. the 2nd gen manifold. I just know that the 2nd gen manifold in a 2nd gen truck is way easier to reuse all the existing HX35 parts. You do have to build a new turbo to intercooler tube and weld a different exhaust flange onto the exhaust, but other than that its a direct bolt in.

There is a slight increase in air flow running a HE351cw vs. the HX35

 

I finished the swap. Kept the original exhaust manifold for now. Wired the wastegate shut so I could index the turbo so the oil lines would hook up. At the same time I installed a banks high ram and boost tube. I bought these with the turbo off of craigslist. Noticable difference. Since the clutch is the next upgrade I keep my quadzilla on 1 or 2. Anything above 20 pounds of boost causes slipping. Level one now feels like level 2 did previously. Now towing 7500 on level 1 feels like it's not even there. I still have the original air box with a drop in k&n. Next week im installing a bhaf which should help also. Im driving it easy until we can get the south bend clutch in and im already happy with the swap.

 

Good to hear that things worked out for ya. For the cost, its hard to not throw one of these turbos onto a 2nd gen truck. I bought my HE351 for $150.

Just wait till you add a second turbo under the HE351cw. Hard to beat my cheap skate twin set-up that I run.

 

What other turbo are you running in your twin set up?

 

A S476/83 T-6 1.1, spools fairly fast. I've run a pile of turbos on the old truck, probably 20-30 sets of twins on the truck. I'm probably going to run that turbo onto my new truck as a single and go run a gta4202 on the old truck. I have a built-up an spare engine for that truck, just waiting for some a few extra parts to show up.

You can find a gta4202 fairly cheap ($500). They are typically 75mm inducer and come with an internal wastegate.

 

Reading this is making me want to upgrade...
Please tell me it's more difficult than what you posted.

 

How does the HE351CW upgrade compare to the older HX-35/40 hybrid turbos that used to be popular?

 

Ill have that answer once I get my clutch installed. I have heard it is better than the hybrid setup, and have a friend running one. But cant test right now as anything above level 1 results in slippage

 

Which 35/40 hybrid you refering to? Tons of options out there. I've run 35/40 stuff for lots of years. The HE351 is basically a HX40, with a single scroll, tighter exhaust housing, I think its a 65mm turbine housing. Most HE351 run an electronic boost sensor for the CR trucks. I just threw in a brass plug for mine. Typically I run 20-25psi of wastegate pressure, in twins. My S476 has a oil leaking out the turbine housing. So for now I'm going to run it as a single turbo and tie the wastegate shut. I have also rotated my compressor housing some and run a vibrant 90deg elbow 2.75 to 3in boot. My truck has a spearco intercooler, so its inlet is different than factory, so I had to add a small chunk of 3in pipe onto a 3in 90deg long radius.

The also HE351 has internal gate and has a 90 deg elbow cast right into the compressor housing.

I'm rebuilding my truck right now, I blew my old 47re out doing a burnout trying out my new ARB lock in my dana 80 that I built up. I also got the tcase rebuilt as the chain was abit saggy and was making aluminum metal in the housing.

 

Thanks Horselady!

Mike, my hybrid is an older PDR one. I don't have any details on the turbine or compressor wheel sizes on it. I figure that any differences between all of the various 35/40 hybrid turbos would be relatively small, but maybe I'm wrong.