1.4L Teardown/Modification
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Graham
New member
I remember it. He was running water meth injection tho. I want to know how much our turbo holds back a tuned car with intake and full exhaust and injectors.. is there enough gain to make it worth the money. I couldn't find any info on that without the meth. I'm not asking anyone to find anything, just saying someone should do it so we can see how they like it.
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Macehammer
New member
I think someone in here is in the midst of a turbo swap...
Who's that again? Someone is...
So stay tuned... or ask around...
Who's that again? Someone is...
So stay tuned... or ask around...
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The M32 Martyr
The idea behind the modified stock turbo isn't horrible. By reducing the backpressure on the turbine by clipping it, and enlarging the compressor, slightly, the efficiency map of the stock turbo should grow into higher DR (density ratio) and higher airflow. Ideally this mod would allow the turbo to boost 24psi safely, where the stock turbo would be in a dangerous, and inefficient area of the compressor map.
The snag is price-to-gain ratio. The amount of skill and labor to machine and modify the OEM turbo for this mod warrants the expensive bill of $900, however the question is: are the gains worth $900?
The positive side is there isn't any other hardware needed. Nor is there much risk of overstressing the engine.
The negative side is this doesn't get around the limitation of the turbine's restrictive exhaust outlet diameter. So there isn't much room for power to grow beyond the initial and theoretical increase.
Also just bolting it on won't "create" more power. The tune would need to be adjusted to make use of it through higher boost.
In conclusion, I think this upgrade would be perfect for a builder that wasn't concerned with continuing to grow more power from the 1.4 as their build progresses, but more so just wanted an edge over 95% of the other builders chasing power. Also it is great for builders with apprehensions about completely overhauling their entire forced induction system.
The snag is price-to-gain ratio. The amount of skill and labor to machine and modify the OEM turbo for this mod warrants the expensive bill of $900, however the question is: are the gains worth $900?
The positive side is there isn't any other hardware needed. Nor is there much risk of overstressing the engine.
The negative side is this doesn't get around the limitation of the turbine's restrictive exhaust outlet diameter. So there isn't much room for power to grow beyond the initial and theoretical increase.
Also just bolting it on won't "create" more power. The tune would need to be adjusted to make use of it through higher boost.
In conclusion, I think this upgrade would be perfect for a builder that wasn't concerned with continuing to grow more power from the 1.4 as their build progresses, but more so just wanted an edge over 95% of the other builders chasing power. Also it is great for builders with apprehensions about completely overhauling their entire forced induction system.
Stratton_Chevrolet_Sonic
HOONIGAN
Im really glad your doing all this so I didn't have to cause I got too many projects. Any update on the valve springs?
$ub$onic
The Sticker Guy
How's your 240 going? Was at toms garage Sunday and he said you had a small tuning issue
Stratton_Chevrolet_Sonic
HOONIGAN
Well I don't really wanna get off topic of this thread cause this subject is totally different but you were at Tom Elvis Sewells shop? Kinda far from you isn't it? Lol but the sr is fine he tuned it it runs good. Made 206whp 217wtq. But I plan on LS 5.3 swapping this winter so that will involve about all of my time and money.
Stratton_Chevrolet_Sonic
HOONIGAN
Oh nice yea I cant wait for LS power in a 2600lb car
Oh ok hows the turbo swap? what turbo are you going with? manifold?
$ub$onic
The Sticker Guy
It's all good, I have been busy too
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The M32 Martyr
Slow going. Dave at DDMW is fabbing it up as a beta for a future production kit.
I'm going with a Garrett GT2560 and a flanged stock mani.
opcorn:
Stratton_Chevrolet_Sonic
HOONIGAN
Slow going. Dave at DDMW is fabbing it up as a beta for a future production kit.
I'm going with a Garrett GT2560 and a flanged stock mani.
Oh ok cool that will work well I'm sure. I have a local fab shop/friend that I could work with to cut and weld a flange on a factory manifold if I decide to go that route... I also have a k04 that I collected from an LNF so I could probly do it pretty cheap.. I just have too many other project vehicles
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The M32 Martyr
K04 would be great for all around power. I'm going for all out peak power.
Also I chose to go with cast mani for many more reasons than cost and time. I'm not really into it for the discount, I'm thoroughly convinced a cast mani is superior for this particular set-up. Maybe not as pretty a tubular, but tubular is unnecessary for the flow and displacement IMO, and it's all gonna be covered by a shield anyspray.
Also I chose to go with cast mani for many more reasons than cost and time. I'm not really into it for the discount, I'm thoroughly convinced a cast mani is superior for this particular set-up. Maybe not as pretty a tubular, but tubular is unnecessary for the flow and displacement IMO, and it's all gonna be covered by a shield anyspray.
firstorbit84
New member
How about adding an electric supercharger for some down low power too?
http://www.ft86club.com/forums/showthread.php?t=39719
http://www.ft86club.com/forums/showthread.php?t=39719
