Turbo Actuator..Whats inside??

[justfishing]

Hello,
Having a few troubles with my turbo over boosting. My line of thought was to put a bigger pipe from the inter-cooler pipe to the actuator so it sees boost quicker and be a bit more responsive as limiting the boost, bigger pipe more volume going to the actuator. Before drilling and silver soldering on a bigger pipe and melting everything inside. What is inside the the actuator ?? anything that will burn. Looked everywhere on the net and there does look to be a rubber diaphragm in there, if so cold solder will be the way to go.
Sort of looking at 12mm pipe I do have a boost box (td5 alive boost box goes to limp mode at about 20-22psi) and the turbo is a VNT on a TD5. As getting a over boost fault all the time.

Thanks
Ian

[Blknight.aus]

if its a VNT then its wound on too hard if its causing overboost. as you probably know the VNt is ment to produce a steady boost state without using a wastegate.

Is there any chance what you are calling the wastegate actuator is actually the vane actuator?

If thats the case the way the actuator works is a different bucket of fish to a turbo wastegate.

[dswatts]

Just thinking. Wouldn't a smaller pipe presurise faster?

[twr7cx]

There is definitely a rubber diaphram inside. If you overheat it you will damage it.

Get an Alive Tuning MAF sensor. With it, I'm running up to 24psi with my VNT and not having any overboosting issues!

[justfishing]

Hello,
Thanks for your replies,
I am not getting any MAF faults only a over boost fault. The if I keep the engine under 20psi then no troubles, looking at the evo the MAF never gets above 600 I have the MAF bypass and a volt limiter on the sender wire so it never get above 4.6 volts.
I am trying to sort out one for the MAP this weekend. Have rigged up a volt switch and a regulated power supply so when 4.6v is reached it switches to the regulated supply of 4.7volts then at 4.3volts switches back to the normal signal. Make sense????

The idea is to give the actuator more air, more flow so keeps the engine on the set 18psi it is set for it does wonder around a far bit. So I will go to plan B.
Ian

[Benny_IIA]

is this on a disco?

your not runnning the waste gate modulator are you? the black box on the ac comp? Because that needs to be disconected when using a vnt.

Becasue the vnt does not have a waste it was an actuator that adjust's the pitch of the vanes. as dave said.

Ive run a BAS boost box and the new irb dual limter box and have never hit over boost ( pushing close to 30psi at times)

also what turbo are you runnning?

[twr7cx]

I am not getting any MAF faults only a over boost fault.

Nor was I, but the Alive Tuning MAF still solved the issue. I was not registering any MAF faults on either my Nancom Evolution nor on Justin Coopers diagnostic laptop thingo (Rovacom?). However, I still had a problem. I spoke to Alive Tuning and they told me about they're uprated MAF for GBP$75.00. I ordered it and it solved my issue. I don't know the technicalities, just that it worked...

[justfishing]

Hello,
Yes have disconnected the modulator. Will check the hoses tomorrow have been looking at the IRB box but will have to save up a bit for that. Will disconnect the MAF tomorrow and give it a go to isolate the problem
this is the fault I am getting
20-02
Turbo overboosting
LOGGED
---
24-03
overboost has occurred this trip
CURRENT

Not much about the MAF have been having this ever since I installed the turbo it is S208 Turbo Technic s from BAS. have TD5 Alive boost box. Done the bypass really getting to me know i have a really good fuel map from TD5 inside. I know Mark at Beechboro 4X4 has had trouble with his boost box from them as well . You see the evo reading 1.4 bar them 00.00 cuts out limp mode if the boost box working it should read that high.
Ian

[twr7cx]

have been looking at the IRB box but will have to save up a bit for that.

Please let me know if you ever get a response or find where to buy an IRB box from. I have been trying to order one but get no response.

[Benny_IIA]

Please let me know if you ever get a response or find where to buy an IRB box from. I have been trying to order one but get no response.


If you are having trouble getting in contact with Ian from IRB he his normally very busy with his fulll time job at JLR,

Try talking to Pete from BAS as they are 'business' partners, and im sure he will be able to help you out.

Also 1.4 bar is 20.3 psi which is when the factory overboost kicks in, so I dont think your boost box works.

[OffTrack]

Also 1.4 bar is 20.3 psi which is when the factory overboost kicks in, so I dont think your boost box works.

x2 - sounds like the boost box is not altering the incoming voltage in anyway. It's probably worth double checking the installation and adjustments before condemning it as faulty.

[twr7cx]

If you are having trouble getting in contact with Ian from IRB he his normally very busy with his fulll time job at JLR,

Having trouble is an understatement. I have received no responses in over a month...



Try talking to Pete from BAS as they are 'business' partners, and im sure he will be able to help you out.

That's what I thought, but when I purchased my VNT, Pete wasn't very interested in selling me a dual box with it.

[justfishing]

Hello,
Huge thanks to everybody with your replies. Well disconnected the MAF still gets the over boost. So at least I know where to look. Will go over the connections tomorrow for the boost box.

The way I got in touch with IRB was through the UK land Rover Land Rover UK Forums - Home (http://forum.landrovernet.com/) his user name is " adafish "

Working on plan B to get the volt switch on the car this week and that should fix the volts from the MAP.
Ian

[Benny_IIA]

Hello,
Huge thanks to everybody with your replies. Well disconnected the MAF still gets the over boost. So at least I know where to look. Will go over the connections tomorrow for the boost box.

The way I got in touch with IRB was through the UK land Rover Land Rover UK Forums - Home (http://forum.landrovernet.com/) his user name is " adafish "

Working on plan B to get the volt switch on the car this week and that should fix the volts from the MAP.
Ian


I will put money on it being the the boost box,

Because they limit the reading to around 1.2 bar I think. Its well below the over boost cut of 1.4 anyway.

[Benny_IIA]

Having trouble is an understatement. I have received no responses in over a month...




That's what I thought, but when I purchased my VNT, Pete wasn't very interested in selling me a dual box with it.


Thats funny because when I purchased my vnt about 2 years ago (about the first batch and it blew up:mad: but thats another story) Pete was telling me 'he' was working a box to adjust the maf readings.

Then Ian came out with it first and I never sure one from pete, I just though he was selling ians box as they share all there other parts.

[twr7cx]

Thats funny because when I purchased my vnt about 2 years ago (about the first batch and it blew up:mad: but thats another story) Pete was telling me 'he' was working a box to adjust the maf readings.

Then Ian came out with it first and I never sure one from pete, I just though he was selling ians box as they share all there other parts.

Nah, Pete was pushing me to setup a 19mm MAF bypass hose rather.

[Benny_IIA]

Nah, Pete was pushing me to setup a 19mm MAF bypass hose rather.

Thats the lazy way.

beacuse your MAF reading will be out the whole way throught the rev range.

may as well run no maf.