Tell me about hybrid turbos...

[M-R-P]

As an example, if I got hold of an 18T, with a straight flange, what's involved in swapping the exhaust housing for the one off my 16t?

Or would it be easier just getting a downpipe made with the straight flange coupling?

All info gratefully accepted

[Dangerous Dave]

In theory all the TD04HL range should have the same size exhaust turbine so they should just swap over

Reference from this document, page 8:
http://team-rs.ru/technical/images/TD04_turbos.pdf

Note the HL series has the largest turbine

[graemewelch]

you dont want a straight flange. the are to restrictive. should be acase of just fitting your exhaust housing. job done

[M-R-P]

Interesting.

And what's involved with swapping the hot side then?

[Dangerous Dave]

Simple, the CHRA (centre bit) and the exhaust housing are held together by a clamp, just undo the bolt and separate the halves. You can even do it on the car, no need to remove the whole turbo. just water and oil lines and *carefully* extract the compressor side

[partsforvolvos.com]

sounds like you are asking about the 'birds and bees ' lol

[M-R-P]

Simple, the CHRA (centre bit) and the exhaust housing are held together by a clamp, just undo the bolt and separate the halves. You can even do it on the car, no need to remove the whole turbo. just water and oil lines and *carefully* extract the compressor side

Would I need to replace the V-band?

Are there any seals that should be replaced other than the oil and water lines?

Is it just a case of pulling the housing off and leaving the wheel where it is or will it all try to fall apart on me?

All hypothetical questions you understand, I'm just improving my knowledge on the subject

[M-R-P]

sounds like you are asking about the 'birds and bees ' lol

Err.. I know how that works dude - and what happens when you practice it. That's why I stopped lol. One little MRP is enough for anybody.

[Dangerous Dave]

The compressor housing and the CHRA and turbine come off as one piece all that is left is the turbine/exhaust housing. The compressor housing is held together by a large spring clip (see pic)

You don't have to replace the v-band, I have reused mine many times.

[M-R-P]

Ooooh lovely

And pictures too - spankin

[Dangerous Dave]

You have to be careful when separating the two halves as the turbine blades are easy to catch and bend under the weight of the turbo (which is what happened to mine) and there isn't a lot of room to manoeuvre down the back of the engine, but it's a lot easier than trying to undo the DP and the exhaust housing to manifold nuts

[M-R-P]

Just had a reassuring text from Mr. Oblark, there I was thinking this would be a ball ache, and yet all evidence points to it being relatively simple

Hypothetically speaking.

[stribo]

There doesn't seem to be anything hyperthetical about this, although I spoke to someone who'd spoken to you about an 18T he's got, and I thought it had an angle flange.

[M-R-P]

There doesn't seem to be anything hyperthetical about this, although I spoke to someone who'd spoken to you about an 18T he's got, and I thought it had an angle flange.

Our survey says....

[Dangerous Dave]

Some info on refurbishing a TD04 turbo, including installation on the car

http://www.volvoforums.org.uk/showthread.php?t=48611

[stribo]

Our survey says....

So not even close to hypothetical then.

[960kg]

Just had a reassuring text from Mr. Oblark, there I was thinking this would be a ball ache, and yet all evidence points to it being relatively simple

Hypothetically speaking.

I am hardly Volvo`s answer to turbo swops but you may of seen that i am after a different turbo for my `97 V70 T5 so why not upgrade ??

After reading quite a bit from different large companys the problem is not just doing the swop which is relatively easy as they match but the running of the thing when fitted.

Apparently one should go for the turbo within your years of manufacture to be sure of a match with the ECU or mapping of the turbo, This is why if fitting a 19T to a Phase 1 T5 you need a remap as the Volvo`s that had this fitted were ME7 ones so to fit to the Phase 1 a remap is a must if you want to use it and not poodle around!

So the 16T, 18T were fitted to 4.3 and 4.4 ECU`s for Phase 1 but the Phase 2 has only a 2000 year 19T ....16T`s and KKK and not 18T`s

Turbochargers from the previous system can be a problem and it may be hard to calibrate the pre-controlled boost level to work in all gears. So you may need a remap also!...to run correctly.

I have the HLM304 map so changing for me to an 18T is no problem as it is within my years of manufacture.

[M-R-P]

Compatibility with the eternally stroppy ME7 system has crossed my mind but a remap is on the cards for the not-so-distant future. In the meantime, I'll be looking to control boost with MBC and actuator adjustments. I can somehow run 16-18 psi on the 16t that's on there without the ecu spitting it's dummy, although it's been retarding the throttle a bit in 1st and 2nd, probably due to the MAP sensor now being clean and working properly. Basically, I'll be tinkering until it behaves, then waiting for the all important map.

[graemewelch]

next thing you know you be buying a fmic meth/water injection and new down pipe. by time you fit new turbo and remap you must be runnign at least 300 bhp

[M-R-P]

290 Will do, I'm not greedy!