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4BT with HE351VE/HE341VE hybrid

9571 Views 23 Replies 7 Participants Last post by  Moochoff, 
S
Hey everyone I thought I would post a thread on my HE351/HE341VE hybrid I made for my 4BT Tacoma. I like my HE351VE and the ability to have an exhaust break but I feel the compressor is to big for the 4BT so I wanted to make something smaller.

I was using a diesel power products Vulcan 1 turbo. Size 62/86mm compressor, 62/70 turbine

Donor brand new HE341VE, Size 54/78mm compressor, 60/70 turbine

Hybrid - 54/78mm compressor, 62/70 turbine

I got a lot of questions on why make a hybrid and not just use the HE341VE. Most HE341VEs are 24 Volt actuators and its pretty hard to find a 12 volt actuator. And most HE341VEs have a 90* oil inlet and outlet so its pretty hard to clock them to have a low mount exhaust outlet.

HE341VE 90* Oil inlet and outlet



To swap everything over I used the HE341VE, wheel, compressor housing, defuser and the clip on the back of the HE351VE defuser.

here is some part numbers







This is the difference between the HE341VE (right) and the HE351VE (left)defusers



I removed this clip from the HE351VE and used it on my HE341VE defuser I also had to rotate it 90* from the stock one.



finished swap



Over all its pretty easy and everything lines right up!

I placed my old wheel and housing on the HE341VE



Incase anyone is wondering how I control the turbo I have a thread on my controller here Universal HE351VE Controller
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B
you gonna run lower compression pistons ? also hope you dont have turbo lag.
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JakeDiesel
Nice is the motor in the Tacoma yet?
How much boost are you making?
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DodgeMech
You wouldn't happen to have a thread on 4btswaps on this? Something I'm very interested in doing to my lil taco at some point
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cmns2500 said:
You wouldn't happen to have a thread on 4btswaps on this? Something I'm very interested in doing to my lil taco at some point
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Yup I have a couple threads over there
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JakeDiesel said:
Nice is the motor in the Tacoma yet?
How much boost are you making?
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Yeah its complete right now im just fine tuning it. With the HE351VE I blew my head gasket, made around 45-50lbs.

With the HE341VE housing and wheel I made 25lbs without pushing the motor, but I am still programming the controller. The actuator doesn't move in a liner fashion. It jumps from one position to the next so its hard to get quick spool without surging or increasing lag.
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BCOWANWHEELS said:
you gonna run lower compression pistons ? also hope you dont have turbo lag.
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No I'm keeping the stock pistons... turbo lag isn't really an issue with a programmable controller plus swapping the HE341VE housing and wheel gives me an HX35 size turbo with the VGT.

I am slowly working towards a twin charged system. Hopefully next summer or so ill have my M122 supercharger on. My hybrid turbo will feed into my supercharger.
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JakeDiesel
steed said:
Yeah its complete right now im just fine tuning it. With the HE351VE I blew my head gasket, made around 45-50lbs.

With the HE341VE housing and wheel I made 25lbs without pushing the motor, but I am still programming the controller. The actuator doesn't move in a liner fashion. It jumps from one position to the next so its hard to get quick spool without surging or increasing lag.
Click to expand...
Did you have to do a body lift to make the 4bt fit. What did you do for the front end solid front axle? Time for marine head gasket and head studs it sounds like.
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S
no body lift, it fits in there pretty good. The frame is plated inside and out up front and its boxed and plated in the back.

the front I have battlement fab Y-Links and 6" alcan springs in the back. I am planning on getting 12" springs for the back. the 14" coil overs are alittle higher then I figured they would be. I have 4" up and 10" down. Im hoping 12" rear springs will be alittle higher then the front so I can lift it a bit more.
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JakeDiesel
steed said:
no body lift, it fits in there pretty good. The frame is plated inside and out up front and its boxed and plated in the back.

the front I have battlement fab Y-Links and 6" alcan springs in the back. I am planning on getting 12" springs for the back. the 14" coil overs are alittle higher then I figured they would be. I have 4" up and 10" down. Im hoping 12" rear springs will be alittle higher then the front so I can lift it a bit more.
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Can you post the link of your build?
What did you do for a trans?
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MoparProud
Well that's pretty cool. Wasn't aware there was a 341VE. Does it still have an exhaust brake function?
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B
with added boost you really need to lower compression ratio on pistons, change timming and adjust fuel components. jmo
bob
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S
BCOWANWHEELS said:
with added boost you really need to lower compression ratio on pistons, change timming and adjust fuel components. jmo
bob
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Timing is set at 18*, right now there really isn't a lot of boost. I'm planning on keeping it at 35lbs for now. Once I get the supercharger on I'm planning on getting studs and steel pistons.
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'strokeThis_'07 said:
Well that's pretty cool. Wasn't aware there was a 341VE. Does it still have an exhaust brake function?
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Yup still have the engine break, basically right now the turbo has two controls. An automatic response (sensor) and a manual control (knob). If you turn the knob all the way to the left it engages the break. There's other ways you can engage the exhaust break you just need to kill the 5v reference.

Right now i am trying to figure out how to in cooperate a TPS and speed reference. I would make it where if I pull off the throttle it opens the turbo to 12CM lowing drive pressure for better MPG, then when you hit the gas it closes it up to 9CM or smaller for faster spool. then if you come completely off the throttle it engages the engine break.

Still a work in progress

I have a thread on 4BT swaps on the controller
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JakeDiesel said:
Can you post the link of your build?
What did you do for a trans?
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I am using a Getrag 360 and NP205, rear axle is a Dodge Dana 70 and the front is a Chevy Dana 60

Heres the link

2002 Toyota Tacoma 4BTA swap (yoings))
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S
I am still tuning my controller to the smaller turbo, I also blew my boost elbow.

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JakeDiesel
Nice work. :thumbsup:Is that a stock Toyota radiator? How does it keep up with cooling?
Notice a difference in vibration between the motor mounts?
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JakeDiesel said:
Nice work. :thumbsup:Is that a stock Toyota radiator? How does it keep up with cooling?
Notice a difference in vibration between the motor mounts?
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Thanks, yup stock 3.4 radiator. From what I read a lot of people have problems with 4BTs overcooling instead of over heating. I want to get an aluminum radiator with an electric fan, right now I don't even have a strode.

I have liquid mounts and the vibrations aren't bad at all.
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Q
I may have missed something, how are you controlling the turbo vanes?

Sorry if I missed it
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