GT1646v turbo

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Hurst89

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Seeing this is pretty much the only "bolt on" turbo upgrade (if it's an upgrade from the bv39) for the BRM, I was wondering what potential this turbo has as far as flow and number (HP and torque)? Would this turbo be able to max out the injectors or would it still be too small?

Hurst
 
R

Rub87

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1646v is quite small, flows max 150hp, if you inject more it will boostcreep..
 
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Hurst89

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Sounds like it's about the same as the BV39. I was just wondering because VW put it on a 140hp motor stock, and usually we see 30-40% possible power increase on stock turbos, so I was hoping this might be something that could easily get BRM owners in the 160-170hp range.

Hurst
 
majesty78

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These turbos are quite a piece of "crap", sorry for saying so.

I had about 8-10 pcs of it in my workshop already...

The turbine is small, but ok, the problem is the compressor wheel, they totally "**** up" even on stock engines, i heard rumors that it might be some kind of production failure but I have no proof for that.

I have one rebuilt with a GT1749VB compressor, so its kinda "mild" hybrid.

Might be good for 150bhp, at least the compressor wont fail anymore....



 
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TDIfreak

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Majesty's turbo is for the older 1.9 with the turbo below header. Used in Touran, T5 1.9 and Passat for example. Some are with KKK and others with GT1646V.
This GT1646V can be turned into a 240hp monster if necessary.:D


BRM on the other hand has the turbo on top of the header. These turbos are the newer VNT design. Also the 2.0 8V PD140 with DPF has this turbo design and a GT1646V turbo.

There are some nice bolt-on 200hp solutions for BRM/2.0 8V available ;).
 
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Hurst89

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TDIFreak,
I'm a little confused after reading your post. Is the GT1646V that is suited for a bolt on upgrade for the BRM the one capable of 240hp? Also, what other options short of custom manifolds and deleting all the emissions equipment is available for the BRM now? I've been searching but none of the posts I read came to any good conclusions on upgrades that were straightforward bolt on swaps for the BRM motor.

Thanks,
Hurst
 
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TDIfreak

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Hurst89 said:
TDIFreak,
I'm a little confused after reading your post. Is the GT1646V that is suited for a bolt on upgrade for the BRM the one capable of 240hp? Also, what other options short of custom manifolds and deleting all the emissions equipment is available for the BRM now? I've been searching but none of the posts I read came to any good conclusions on upgrades that were straightforward bolt on swaps for the BRM motor.

Thanks,
Hurst
Click to expand...
For BRM 200hp is bolt-on reality.
For older 1.9 engines much more.

But things evolve :).
 
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Hurst89

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I wonder what turbo that's based off of. The KP and BV39 exhaust housings seem too small to do anything major with as far as power with hybrids. Maybe they have quite a bit of meat in there to machine away and open them up. If the 1646 was a good turbo for say 170-80 hp on a BRM, and you can get one for under $1000 from Europe used it seems, then I would say the demand would be pretty high, but I am not sure if it's any better than what we have stock which maxes at around 150 with a refined tune.

Hurst
 
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Hurst89

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What about mating that exhaust side to a GT1852V's compressor side? As it has the right angle for the outlet?

Hurst
 
JST

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Hurst89 said:
Sounds like it's about the same as the BV39. I was just wondering because VW put it on a 140hp motor stock, and usually we see 30-40% possible power increase on stock turbos, so I was hoping this might be something that could easily get BRM owners in the 160-170hp range.

Hurst
Click to expand...
The one on the 140 HP 2.0 litres is actually a GTB1646VM, which is probably a completely different turbo in terms of max. flow than the older GT1646v ...

Later (3rd quarter 2007) that unit is replaced by a GTB1546VM.
 
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Hurst89

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JST said:
The one on the 140 HP 2.0 litres is actually a GTB1646VM, which is probably a completely different turbo in terms of max. flow than the older GT1646v ...

Later (3rd quarter 2007) that unit is replaced by a GTB1546VM.
Click to expand...
Are these any better than the BV39? It looks to be a direct bolt on and plug up to the BRM's set up, just need remapping for a bigger turbo (assuming it's actually bigger). They can be had fairly readily from ebay (not the american site, but european sites).

Hurst
 
JST

JST

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Hurst89 said:
Are these any better than the BV39? It looks to be a direct bolt on and plug up to the BRM's set up, just need remapping for a bigger turbo (assuming it's actually bigger). They can be had fairly readily from ebay (not the american site, but european sites).

Hurst
Click to expand...
Well, on the 2.0 TDI this turbo achieves +/- 170 hp with a remap only, so I guess there's some margin left there with additional mods.
 
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Hurst89

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If I get some free cash, I may try to get one of these shipped over, but seeing I'm a college student, free cash is something that probably won't be coming in that quantity for some time... It sounds like this turbo may be capable of taking the BRM to a point where PD150 injectors would be comfortable.

Hurst
 
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Rub87

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are you guys talking about 2.0L 8v engine? as the 16v engine uses totally diff exh manifold flange, so isn't pnp..
 
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Hurst89

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I'm talking about engine code BMM, which is the 8v PD140 2.0L engine. I believe it has VW part number 03g253016h for the turbo/exhaust manifold.

Hurst
 
R

Rub87

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ain't gonna happen, it's a 1749va, unless you take 170hp which is siemens PPD, so also a no go
 
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nin2

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TDIfreak said:
This GT1646V can be turned into a 240hp monster if necessary.:D
Click to expand...
Hi!
Can you please explain in little more detail what has to be done with pd140's gt1646 turbo to achieve this? :)
p.s. Sorry for reviving an old thread, but I'm really interested in this, because I have have one of these turbos laying in my drawer and am trying to figure out whats the best way to use (hybridize) it. I'm planning on putting it on 1.9 tdi BKC (77kw) engine.
 
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nin2

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Hi guys,
Still trying to figure out how to put in use GT1646 from PD140 engine (so it's actually GTB1646mv and not GT1646v).

What are your thoughts on putting bigger compressor wheel on it? Would 52mm compressor wheel work OK or maybe 49mm would be a better option, i mean - surge wise - taking in account its relatively small turbine wheel size?
 
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