Gearbox mounted turbo

[mattgreene]

Does any one have any pictures of a g/box mounted turbo setup, im thinking about doing it to my hdi? Also does anyone have and parts or ideas that might be useful?

[Piggy]

There was a thread a little while ago, same question asked, and loads of pics of gearbox mounted setups...try a search and see if you get anything

[bashbarnard]

I didnt think there was.much point on a hdi unless you going huge power? You can mao them with minor mods and clutch to good power. I thought it was more of an xud thing

[mattgreene]

I was planning to put a bigger turbo on due to the standard one failing, i guess that it means i can easily run 22 psi boost and be fairly reliable doing it, 20psi is the max on a k15.

[pioneer DJ paddy]

Here was my set up [attachment=16466]y[attachment=16465][attachment=16464] let me no if u need more pics have loads lol

[mattgreene]

looks good mate, did i take much making the pipe from the manifold to the turbo? did the exhaust run ok and how did you do it?

[Uberderv]

If you want to see it on a dq 10 engine have a look at brynllwog (sp) project thread.

[mattgreene]

Have you got a link uberderv, i cant seem to find it on the search

[Uberderv]

http://www.nosmokenopoke.com/forum/showt...-HDi/page6

I Can only find it there^^^^^^^

[Piggy]

You can get a decent upgraded turbo down the back on a hdi which would be good for 200bhp...
Which is more than your standard clutch will manage

[mattgreene]

So what turbo would you all recommend to fit then? Thanks uberderv for the link

[Uberderv]

Apparently the turbo off a 120d is a goodun, it's a 3rd gen VNT so will require some special mapping.

[Piggy]

A VLKR would be wonderful...but a simple GT1749/52s would be a simple ish swap and would see very good gains without having to find some random turbo for £300 off a 120d and without having to control it and you can find them for about £70-100

[Uberderv]

A VLKR would be wonderful...but a simple GT1749/52s would be a simple ish swap and would see very good gains without having to find some random turbo for £300 off a 120d and without having to control it and you can find them for about £70-100

You saying not to go VNT with ecu control?

[mikey b]

Here is my setup this is on a xud and a boost can not sure how you would do it on a hdi

[pugmanxud]

Where do you pit the battery?

[Sambarker]

Where do you pit the battery?

In the boot!

[pugmanxud]

Aaah!! I am leaning towards box mounting my td04 purely so I can go vnt sooner or later. Fab work will be easy for me

[Poodle]

I shouldn't bother with the gt17s, they're too small or laggy to be worth it imo. VNT would be ideal if you can find someone to map it, pro_steve does vnt control these days.

[pioneer DJ paddy]

looks good mate, did i take much making the pipe from the manifold to the turbo? did the exhaust run ok and how did you do it?



Didnt take me that long and the pipeing wasnt than hard ether my point is is ur going for a bigger turbo u are goin to want people to be able to see its so that why i went gear box mount lol :-) bt is up to u like :-)


[attachment=16477] [attachment=16476]

[Piggy]

I shouldn't bother with the gt17s, they're too small or laggy to be worth it imo. VNT would be ideal if you can find someone to map it, pro_steve does vnt control these days.

Laggy!?

GT1749s I wouldnt ever say was laggy!

[Kezzieboy]

That relocation pipe above looks like a right radge :S

[Sambarker]

That relocation pipe above looks like a right radge :S

Who cares if it works!

[Kezzieboy]

I know they're not exactly precision engines, but that's going to introduce some resistance to flow!

[mr_fish]

That relocation pipe above looks like a right radge :S

Who cares if it works!

What he said

Exactly the style I would be going for if I was to G/Box mount...random bit of exhaust bend...does the job

[Kezzieboy]

I specifically mean the join from the straight to the pipe that goes to the hotside BTW, the rest seems perfectly functional

[pioneer DJ paddy]

I specifically mean the join from the straight to the pipe that goes to the hotside BTW, the rest seems perfectly functional


Lol the pipe in the pic was just a tester its a lot better nw lol and works fine :-)

[Poodle]

Laggy!?

GT1749s I wouldnt ever say was laggy!

No, but it's probably too small to be worth upgrading to, on the dci engines she's on full blow by 2k rpm. The 1752 on the saabs will be laggy as it's designed for a larger petrol engine.

[Ruan]

Laggy!?

GT1749s I wouldnt ever say was laggy!

No, but it's probably too small to be worth upgrading to, on the dci engines she's on full blow by 2k rpm. The 1752 on the saabs will be laggy as it's designed for a larger petrol engine.

Remember though laggy =/= high boost threshold...

Two very different things... I've got a 1752 on my DT atm, once you've got it above 3k rpm, you can poke the throttle and the turbo is instantly there, anything below 3k, just not enough gas flow... That's a high boost threshold...

Conversely a T25, starts spooling from about 1400rpm, but takes an age to build to full boost - that's lag. Every time you get back on the throttle, it takes an age for the turbo to spin up to speed.

[Kezzieboy]

So is lag just due to the inefficiency of the turbine/inertial/friction losses? Obviously boost threshold is a design feature, as a turbo has a set operating range.