[93Green12v]

I have recently put one on my truck and was wondering how hot everyone else is running?

 

[BILTIT]

How are you controlling the variable vanes?

 

[93flatbed]

If you are talking about the 351cw then it gets a little toasty on the top end. Mine does great with the wastgate welded. BUT my head has some major work done to it. I can see that with a stock head and the little 9cm housing then it would get HOT. I don't have any experiance without the head work done as I did both at the same time.
I have a VGT turbo on my "stock" crew cab. It cools great, but the truck has very little fuel going though it. I don't trust my wife to watch the Pyro...LOL

 

[93Green12v]

Right now I'm controlling it with a wastegate actuator. As it builds boost it opens the vanes further, I let off and it closes down. Simple setup not perfected yet gets pretty warm without much fuel.

 

[MoPowa]

Adjust your actuator so it opens a little sooner. Have you tried adjusting your starting point where the vanes rest when there is no boost. Could be that it is a little to small and the vanes aren't opening quick enough to relief some of that heat.

 

[93Green12v]

No I haven't yet. How exactly do you adjust the vanes? Do you have to go thru the bottom of the housing where the return line runs out?

I was thinking of adding a spring pulling in the opposite direction the actuator goes just to slow it down from closing up so fast.

 

[MoPowa]

Well if your using the actuator to determine where the vane control arm stops I would imagine you can just adjust the actuators mount somehow to push the actuator into the arm a little further. Depending on your set up. Or build some sort of stop for the vane control arm to rest on, if you aren't using the exhaust brake part of the vanes.
Sounds to me like your exhaust is far too tight at the beginning when the actuator is not opening your vanes. Does it sound like a jet when idling? If so it is far to tight and you will be much happier with the egts once you adjust the starting point. Pictures of your set up would help a bunch too
Hope this helps

 

[93Green12v]

Ya sounds a bit like a jet, its kinda cool. Alright tomorrow I'll post some pictures up. Would a turbo blanket hurt more than help? It came with the turbo when I got it, a friend was running it in his car.

 

[MoPowa]

Yeah your starting point for the vanes definitely needs to be opened a little, not a whole lot as a little will go a long way, play around with it until you find the sweet spot.
Does your waste gate rod have an adjustable collar on it that you can shorten or lengthen the rod with? If so once you get the starting point dialed in start adjusting the length of this rod to make the the wastegate open your vanes a little sooner, this will help with egts when running higher boost.
Once you get it dialed in a little more and your egts are more controllable I would say run the blanket, will keep the heat in your housing a lot better and once you have your egts under control that is not a bad thing. I doubt you'd see any difference performance wise though.
Good luck

 

[93Green12v]

Ya it has an adjustable rod or collar on it. I'll have to play with it some now. Ya the blanket makes a big difference as far as heat under the hood. Thats all if noticed and I can touch it without burning myself, which is always a plus when you have to work on a hot engine.

 

[93Green12v]

pictures of my he351vgt setup

Pictures coming soon sorry.http://i616.photobucket.com/albums/...ms/tt243/93Green12v/DSCN0912.jpg?t=1283560472

 

[93Green12v]

http://i616.photobucket.com/albums/tt243/93Green12v/DSCN0912.jpg?t=1283560472

 

[93Green12v]

http://i616.photobucket.com/albums/tt243/93Green12v/DSCN0911.jpg?t=1283560472

 

[93Green12v]

Played with actuator and opened up the vanes some more. Still gets pretty warm up top and I'm only running about 20-25 pounds of boost at WOT. Not sure if that as anything to do with it or not. I'm half tempted to take it off and sell it and put my h1c back on.

 

[Dieselpolluter]

Wow, i love my vgt i am setup at 10cm2 housing with the actuator disconected. I still need to build a stop to keep it from opening all the way. At WOT i can make 48 psi and climing with just under 1100 deg on the pyro. With the actuator hooked up will make 32 psi at wot with 1150 on the pyro.

 

[93Green12v]

Maybe I'll try it without the actuator hooked up. I'm wondering if the vanes aren't fully opening and thats why its creating alot of heat.

 

[Dieselpolluter]

Sounds like you have the control collar open to far. Thus less boost and more heat.

 

[93Green12v]

Control collar? Do tell, are you speaking of the vanes or something else that I am unaware of.

 

[Dieselpolluter]

Yes, the holset is not like the garret. The inlet guide vanes do not change pitch they move latterally and have a fixed pitch. The vanes are attched to a collar that moves back and forth laterally changing the size of the gas path to the turbine wheel. So with the control collar fully closed you have a housing size of 3cm2 and with it fully open you have a housing size of 33cm2.

Video

 

[93Green12v]

Alright that makes sense, so I'm going to adjust the collar some more.

How much does your collar travel?

Do you happen to know where to find the p/n# for the v band clamp on these vgt's?