What mods for smoother power delivery ?

[OCR]

New poster! (less than 10 posts)

I am looking for mods on a 1.4 GTT which would make the engine power delivery more like a NA engine. That is a more gradual and smooth increase in acceleration going up the revs. I am not interested in more power, only in a better delivery. The car presently has around 200 bhp at the wheels with a T3 / T25 turbo, piper 300 cams and group A carb (among other mods). Thanks for your suggestions.

[Woznaldo]

You could probably try an electronic boost controller, like the AEM Tru Boost system.

[Sparkie]

retard the cam timing between 4 and 10deg. it'll run like a N/A then....

[Matt Cole]

I think you need a faster spooling turbo and a cam change to suit! Ie almost a standard 5.:eek:

[OCR]

New poster! (less than 10 posts)

Can you recommend some fast spool turbos of larger size (like T30 / T25) ? Something that could reach or exceed 200 bhp at 1.6 bar and still have low lag and start to pull from low revs. I know these (the good ones) go for a lot of money, so hopefully I'll find something below 2000 E.

[Tony Walker]

high pressure smaller turbo huge intercooler external wastegate? or......... VNT :D

[James5]

New poster! (less than 10 posts)

Can you recommend some fast spool turbos of larger size (like T30 / T25) ? Something that could reach or exceed 200 bhp and still have low lag and start to pull from low revs. I know these (the good ones) go for a lot of money, so hopefully I'll find something below 2000 E.

VNT (T3 size spool of small turbo yet power of a big turbo), I will be prob be selling mine soon due to going to be doing another conversion:laugh::eek:

[James5]

high pressure smaller turbo huge intercooler external wastegate? or......... VNT :D


Wish i had refreshed sooner beat me to it

[James5]

:laugh: not that a VNT gives you a smooth or gradual increase in acceleration it's literally nothing then full boost

[OCR]

New poster! (less than 10 posts)


:laugh: not that a VNT gives you a smooth or gradual increase in acceleration it's literally nothing then full boost
Then it is exactly what I do NOT need, so still useful to know :)
Any other options with smooth delivery in power (and not too much lag) ?
About that higher pressure, I would probably not go over 1.6 bar.

[Tony Walker]

its a turbo charged small engine, the only way to have no lag/boost feeling is to take the turbo off. or fit a 172 engine, your never going to get a smooth 200hp. At the end of the day your going from a 60ish hp1.4 to 200hp within a few hundered rpm all you can really do is change where that power comes in. vnt will have power quickly from very low rpm, like a standard t2 will spool up around the 1700/2000 mark and pull all the way through the rev range but will never make 200hp.

[OCR]

New poster! (less than 10 posts)


its a turbo charged small engine, the only way to have no lag/boost feeling is to take the turbo off. or fit a 172 engine, your never going to get a smooth 200hp. At the end of the day your going from a 60ish hp1.4 to 200hp within a few hundered rpm all you can really do is change where that power comes in. vnt will have power quickly from very low rpm, like a standard t2 will spool up around the 1700/2000 mark and pull all the way through the rev range but will never make 200hp.So I suppose I could "get" smoother acceleration out of a VNT from low revs with little lag from "throttle control" (i.e. foot planting control :) ) ?

If this is the closest I'm going to get to this goal, do you have any links to recommended stores / manufacturer for VNT models ? Particularly the larger varieties...