19T turbo?

[don kalmar union]

This thread is a bloody nightmare.....

For the engine in question, unlikely to be giving much over 325bhp true flywheel figure a cat back of 2.5" nominal is what you want....this combined with a 3" nominal downpipe that reduces down to 2.5" nominal after the special cat.

You really do not want to draw air out from the engine bay when you can use the standard inlet tract with a good panel filter to get the air in from the outside. If you are really looking for mid 300's plus with a TT hybrid or maybe a Garret then a 3" downpipe can be fitted with the rest of the system in a similar diameter and if noise is not too much of an issue then a small box under the boot floor will do the trick. The principle with a turbo engine being that the further back you fit any given silencer the more effective it is in noise reduction.

I have got Ferrita stuff in various combinations in stock if you want to have a good look......


Regards, Don.

[carpy]

Originally Posted by don kalmar union

This thread is a bloody nightmare.....

For the engine in question, unlikely to be giving much over 325bhp true flywheel figure a cat back of 2.5" nominal is what you want....this combined with a 3" nominal downpipe that reduces down to 2.5" nominal after the special cat.

You really do not want to draw air out from the engine bay when you can use the standard inlet tract with a good panel filter to get the air in from the outside. If you are really looking for mid 300's plus with a TT hybrid or maybe a Garret then a 3" downpipe can be fitted with the rest of the system in a similar diameter and if noise is not too much of an issue then a small box under the boot floor will do the trick. The principle with a turbo engine being that the further back you fit any given silencer the more effective it is in noise reduction.

I have got Ferrita stuff in various combinations in stock if you want to have a good look......


Regards, Don.

Thanks for the reply Don. Definitely agreed that this thread is a nightmare!

Someone else said that's a bad thing about the BSR filter (drawing hot air from engine bay) but surely it's possible to divert cold air up to this & then you've got the best of both worlds. Higher flow BSR filter & nice cold air feed?

Any chance we can try and ascertain just what I would need for a genuine 350bhp crank.

3" downpipe - Ferrita / Custom Powerflow etc
Possibly change air filter / Possibly leave ITG air filter in place
Possibly change Milltek exhaust
Garrett / TT turbo upgrade
Custom remap

Would this require uprated internals, or would it be touch and go whether the stock would be ok, or would it be fine?

What's the box under the boot floor you talk about Don?

Cheers

[RiPsTa33]

[QUOTE=don kalmar union;238997]

Originally Posted by RiPsTa33

Below a true 300bhp, computed at the flywheel, you will not need larger injectors with proper mapping on these cars with an 18T.

Regards, Don.Norchi.

Hi Don,
What is the maximum power achievable from a 18T, and what is the maximum achievable power from orange injectors as in what can they fuel to powerwise comfortably?

[RiPsTa33]

Originally Posted by carpy

Thanks for the reply Don. Definitely agreed that this thread is a nightmare!

Someone else said that's a bad thing about the BSR filter (drawing hot air from engine bay) but surely it's possible to divert cold air up to this & then you've got the best of both worlds. Higher flow BSR filter & nice cold air feed?

Agreed this is a nightmare, my point about the air filter was that there is no performance gain switching an ITG panel for a BSR filter. I am not biased because i have a BSR induction kit on my 850R.

[foggyjames]

Originally Posted by don kalmar union

The principle with a turbo engine being that the further back you fit any given silencer the more effective it is in noise reduction.

I'd heard that the further forward you fit the box(es)*, and the larger is it / they are, the quieter the exhaust will be. We moved the single box on Ryan's car forward from below the boot to just in front of the rear axle, and although it changed the tone quite a bit (from pure 'boom' to 'angry tractor'), it didn't really get any quieter. One thing's for sure - exhaust acoustics is an artform in itself!

* Carpy - Box...i.e. exhaust box....i.e. silencer.

A 19T on a T5 lump will make ~300bhp (crank) at 15psi with sensible supporting modifications. Given the size of the unit, I'd not use it to boost much higher than that. Perhaps 20psi...beyond that, it's probably out of its efficiency range on a T5 engine.

Air filters aren't even worth debating really. Pick one and forget - it'll make next to no difference anyway. I'm with Don - a panel filter in the stock airbox is probably as good as anything. This isn't Max Power.

Your formula is good there Carpy. The fundamental key to unlocking more power (without increasing engine size or heading towards race-spec engine speeds) is to pick the right turbo for your application. Everything else is simply what is needed to make that turbo "work" on your engine...but the turbo is top dog.

I think the trick to topping 300bhp (crank) is to choose a turbo which will flow well on the exhaust side (a 19T exhaust side isn't much better than a 15G - it just has a bigger compressor & housing) to get the gas out, and match it to a suitibly sized compressor (a bit bigger than a 19T should do the trick).

The best thing to do is to chat to a tuning or turbo specialist regarding a suitibly sized turbo for your application. Without consulting compressor maps, it's near enough impossible to come up with an accurate suggestion of what would make for a good turbo choice.

However, I have a couple of suspicions. Note, this is pure benchracing...I don't know...it's just a hunch. First off, I suspect that if you head to a turbo specialist, one of the larger Garrett GT28xx series units will mentioned...perhaps a small GT30xx. Secondly, I suspect that with suitable tuning (i.e. a custom remap) you won't need a built bottom end to achieve 350bhp (crank).

On another note, a couple of days ago I saw a video of probably the craziest T5 unit I've seen to date. Spec: D5 block (much stronger), everything built for 10,000 rpm operation, a HUGE turbo (the compressor housing must have been....12" diameter?), and getting on for 3 Bar (yup...it was about 40psi) of boost. Result? 1040bhp (crank) on an engine dyno. Yeehaw!

cheers

James

[bobcat]

following on from an earlier post of mine, i thought i would post up some pics of my old ITG filter and my new JR\BSR one:













New one fitted fine, unlike the ITG which is slightly to short (so you have to balance it in). And hopefully this one wont allow my maf to foul up.

[pyaap]

Hi Bobcat,

Some very interesting pictures you have there! I too have some reservations about sponge air filters firstly because of the actual filtration properties but more importantly because I've seen them starting to come off in chunks when they accumulate moisture and become quite damp over a period of time, e.g. when driving in heavy rain.

Don't both Pipercross and ITG get their foam from the same supplier?

Originally Posted by bobcat

New one fitted fine, unlike the ITG which is slightly to short (so you have to balance it in).

I would have thought that could probably be down to ITG adapting a pre-existing panel filter from their range for another car (with similar dimensions to the Volvo OEM paper filter), rather than actually developing one from scratch.

[carpy]

Where's the BSR one! Interesting pictures thankyou.

[bobcat]

Originally Posted by carpy

Where's the BSR one! Interesting pictures thankyou.

they are the same.

[carpy]

I thought the BSR one looked like this baby