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Tuning T-Jet Screamer Pipe

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Tuning T-Jet Screamer Pipe

D4nny8oy said:
... when the physical size of the internal wastegate is not large enough to 'bleed' enough air away from the turbine to prevent overboosting. ;)

Unless we're talking BIG power and boost, a T-jet is not going to benefit from an external wastegate.
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Exactly..Couldn't agree more dannyboy.. ;) ;)
 
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B3NNETT said:
Sick innit tischhhhhhhh
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At the end of the day if you aren't interested in it, don't comment, inn'it?

..not sure I know what you're trying to imply either, so every time someone comes on this forum to post up an idea for a mod they're just labeled and thrown aside?

Would you rather I asked what bulbs are best in my GP.. or whats the best induction - GSR or BMC CDA?

Are you not a chav then with your tinted out 'propa bad man' Stilo?
It works both ways in'nit bruv

Vruuum TISHHhhhhwat
 
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D4nny8oy said:
... when the physical size of the internal wastegate is not large enough to 'bleed' enough air away from the turbine to prevent overboosting. ;)

Unless we're talking BIG power and boost, a T-jet is not going to benefit from an external wastegate.
Click to expand...

You don't think there would be not even a slight difference in exhaust gas displacement, therefore improving throttle response and reducing turbo lag to even less then what it is?

If the stock exhaust is as restricted as I've heard then any shortcuts would be taken if its a quick way out, don't you agree? :confused:
 
Blank2k2 said:
i youtubed videos earlier after see'ing this thread and well, some sound pretty cool others sound really bad (pointlessly loud etc), would be interesting to see :)
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Yes I reckon it'd be a good idea even if it's just to see what effect it has on a smaller turbo, I reckon it wouldn't sound half bad but none of us can really comment 'til we do it can we :p

After I did post the thread I admit I spent about 20 minutes watching screamer pipes on you tube too :eek:
 
D4nny8oy said:
... when the physical size of the internal wastegate is not large enough to 'bleed' enough air away from the turbine to prevent overboosting. ;)

Unless we're talking BIG power and boost, a T-jet is not going to benefit from an external wastegate.
Click to expand...

when your talking of not enough power, surely a 155bhp abarth, or a 180bhp abarth essessee with their bigger turbo is enough power?
im not sure if they can go in diesels, but if they can then again, surely some of these 180/90bhp diesel beasts we have on here?
 
Overbewst said:
Are you not a chav then with your tinted out 'propa bad man' Stilo?
It works both ways in'nit bruv

Vruuum TISHHhhhhwat
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nope cause it's not tinted out 'propa bad man' as you put it.
It still looks as it rolled out the factory 3 1/2 years ago bar lowering 30mm

Now go back to your maccy' d car park cruises
 
Percyhahn said:
when your talking of not enough power, surely a 155bhp abarth, or a 180bhp abarth essessee with their bigger turbo is enough power?
im not sure if they can go in diesels, but if they can then again, surely some of these 180/90bhp diesel beasts we have on here?
Click to expand...


i think he means a larger engine displacement, after all a 1.4 is only a 1.4 im only waiting for insurance to decrease to a sensible amount before moving up :rolleyes:
 
Percyhahn said:
when your talking of not enough power, surely a 155bhp abarth, or a 180bhp abarth essessee with their bigger turbo is enough power?
im not sure if they can go in diesels, but if they can then again, surely some of these 180/90bhp diesel beasts we have on here?
Click to expand...

The Escort RS turbo (1.6 8v) in the pictures I posted ran 350 bhp before he experimented with the externally-gated T38. 180bhp is nothing. You'll receive no benefit while running the standard turbo, or the Abarth turbo, coupled to the fact that they're both internal-wastegate turbo's. ;)

Ain't going to work on the Mjet's as they run variable geometry turbo's without a wastegate.
 
D4nny8oy said:
The Escort RS turbo (1.6 8v) in the pictures I posted ran 350 bhp before he experimented with the externally-gated T38. 180bhp is nothing. You'll receive no benefit while running the standard turbo, or the Abarth turbo, coupled to the fact that they're both internal-wastegate turbo's. ;)

Ain't going to work on the Mjet's as they run variable geometry turbo's without a wastegate.
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ah i see (y). its true, on this foum 180/190 seems amazing, but we forget i think that compared to some cars, thats nothing lol.
i didnt know that about an mjet turbo either :)
 
Overbewst said:
You don't think there would be not even a slight difference in exhaust gas displacement, therefore improving throttle response and reducing turbo lag to even less then what it is?

If the stock exhaust is as restricted as I've heard then any shortcuts would be taken if its a quick way out, don't you agree? :confused:
Click to expand...

To further nail down the coffin lid, here's another friend's Evo setup (based on an AMS design)-

AMSGT35R.jpg

Notice the external gate gases being directed straight back into the downpipe (as an internal wastegate would)? And how much power does he run... 300... 400bhp?

Evo power.jpg

The only reason he runs an external gate is because an internal wastegate struggles to bleed enough air off the turbine for only 10psi @ 7000rpm (as an example) on a big turbo like that. The T-jet turbo's internal wastegate is not going to struggle with that. ;)
 
Was actually talking about this last night to a mate. Sounds like a great idea, anyone done it yet?

Also would need to cut a hole in the undertray as he near set his onfire in his skyline :eek:
 
Steve-o_bc said:
Was actually talking about this last night to a mate. Sounds like a great idea, anyone done it yet?

Also would need to cut a hole in the undertray as he near set his onfire in his skyline :eek:
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I was discussing this with my mate the other day!!

if you swapped out the internal wastegate for ext. then you could also have all the benefits that comes with that i.e. adjustable boost so it's not always spooling making noise, even better with a vl36 :D

were you planning on giving it a go mate?
 
TJet120TJet said:
if you swapped out the internal wastegate for ext.
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You can't just remove the internal wastegate and weld-on an external one, unless the exhaust housing is divided (all pics of Tjet/Abarth turbo's I've seen are not).

TJet120TJet said:
you could also have all the benefits that comes with that i.e. adjustable boost so it's not always spooling making noise, even better with a vl36 :D
Click to expand...

:confused: You mean an electronic boost controller (which would work on internally-gated turbo's too)? You'd never be able to dump all the gases through the wastegate anyway, so I don't see what you're trying to say.
 
D4nny8oy said:
You can't just remove the internal wastegate and weld-on an external one, unless the exhaust housing is divided (all pics of Tjet/Abarth turbo's I've seen are not).
Click to expand...
I was thinking more along the lines of modifying the turbo to an ext. one.

D4nny8oy said:
:confused: You mean an electronic boost controller (which would work on internally-gated turbo's too)? You'd never be able to dump all the gases through the wastegate anyway, so I don't see what you're trying to say.
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No, I mean the way you tighten the spring nut and add resistance to create more/less boost..

I wasn't talking about dumping all the gasses??


if any of this is impossible/extremely difficult, let me know!!
 
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TJet120TJet said:
if any of this is impossible/extremely difficult, let me know!!
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Never mind, found on google:

External wastegates will show at least small gains on just about any turbo compared to an internal. By only allowing the necessary gasses to enter the turbine housing and dumping the rest before the turbo you eliminiate turbulence within the turbine housing. This is inherently more effecient and will usually show improvements in either spool, ultimate power, or both.
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You can buy up-pipes designed to be used with external wastegates, or you can have ones custom made for decently cheap. Either way, you can convert an internal wastegate turbo to run with an external wastegate fairly easily. You can weld the wastegate flapper to the turbine housing to keep it closed. While that does work, if you ever want to sell the turbo you're gonna have a hard time selling it since most people will run internal. The easier thing to do is tack weld the flapper arm to the outside of the housing. All you need is a small weld. By doing this, if you ever decide to revert back to internal all you need is a dremel and about 5 minutes...
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(y)
 
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Thinking of going aftermarket with the turbo, that way there'll already be an external wastegate. Only problem is its an mot fail over here but thankfully think i can pull a few strings with someone i know lol.

And the fact is theres very few if only a few t-jets over here and im already seeing people with shocked faces on the drag strip lol.

A punto with a screamer pipe would be awesome
 
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Steve-o_bc said:
Thinking of going aftermarket with the turbo, that way there'll already be an external wastegate. Only problem is its an mot fail over here but thankfully think i can pull a few strings with someone i know lol.

And the fact is theres very few if only a few t-jets over here and im already seeing people with shocked faces on the drag strip lol.

A punto with a screamer pipe would be awesome
Click to expand...

2 words mate, butterfly valve.
:slayer:
 
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