Mus

iTrader: (2)

hi guys i was planning on going 2.5 but due to market condition and credit crunch things are slightly tighter... has anyone gone from 2l to 2.1????

and what would be the best turbo for 2.1 ive currently got a version 4 sti type r. with a 20G and 10% meth was runinng bhp419.5 and that felt great.

im not after the highest figure in the world im after nice and early spool 3700 3800 max, with abit more power i wouldnt mind runinng meth again.
shall i just stick with my 20G and do some port and polishing on the heads?
FP Green
Gt30
md321h
im looking for the widest power band
ive been in 2ltr cars that come on full boost at 5k rpm and rev up to 7k rpm i do not want that.

thanks

mus

banny sti

iTrader: (68)

A md321t on a 2.1, with some ported heads would be awesome!

Banny

Mus

iTrader: (2)

where do you get full boost on the road banny? and are you running meth? how would ported heads help??

banny sti

iTrader: (68)

Full boost of 1.7bar on the road in 4th is 3800rpm, running 10% meth. Ported heads would speed up the gas flow allowing for faster spool up and more outright power. This is the rolling road graph to my car:



Banny

Mad Hammer

iTrader: (55)

Consider the T or even new V, there is another thread on here at the moment where my friend is considering the V on a 2.0. With STI heads you would have a full boost power band from 3700 ish to 8k on your car with a T, V has not been seen on a 2.0 yet

Mus

iTrader: (2)

thanks for the hint mad hammeris that a hint mad hammer

thanks for posting your graph what about 2nd and 3 rd gear would it be the same or better??

how comes no one considers the Gt30 or the fp green.

by the way my 2 liter is gone now so i wont be going 2 liter again, im going 2.1 the build will start within the next week or so im hoping to start running the block in just after christmas.

Isnt the V bigger than the T??

Mad Hammer

iTrader: (55)

V is bigger than T, seen loads of comments hear saying the T is too big for a 2.0, it isn't imo (with STI heads anyway). My car was very drivable on the road with the T in 2.0 form so a 2.1 will have even better spool i'm sure.

I can't comment on the other turbos you mentioned as I have no experience of either

banny sti

iTrader: (68)

In 2nd it makes 1.65 bar boost at just over 4200 rpm and 3rd is not really much different to 4th, you also get decent off boost driving and turbo response is excellent.

Banny

dynamix

iTrader: (3)

Thought you were going for a 2.5 as per this thread you started ?

https://www.scoobynet.com/general-te...rbo-2-5-a.html

stealthy55

what turbo did you use on this set up?

banny sti

iTrader: (68)

It is a GT30 standard position hybrid based on a GT3071R, there is probably another 30bhp to be had from the turbo.

Banny

stealthy55

cheers for that, what made you go for gt30 rather than md series?

banny sti

iTrader: (68)

Long story but I bought the turbo under the assumption it was an MD321H as that is what the seller (purchased from scoobynet) sold it as.

Banny

Mus

iTrader: (2)

good memory dynamix i was hoping to sell my current block but due to check engine light going off and me too busy looking at my rear view mirror my current engine detonated very messy friday just gone!! so i wont be able to afford a 2.5 and ive manged to secure a good deal on 2.1 with slowboy, use the rest of the money on upgraded ecu ect..
beside with 2.1 im going for its going to be based on closed deck block cp coated pistons and pauter rods and for the same money i wouldnt of got what i wanted on 2.5.

Fai17

iTrader: (2)

that should be interesting....2.1 and a v turbo

Mus

iTrader: (2)

md321v turbo thats bigger than the T right? and banny to just to clearfy something with one of my close pals that graph on top of the page is that on 2litre or 2.5?

btw the spec of the new engine will be cp coated pistons 93.5mm if i can remmeber correctly pauter rods and 79mm crank and its all going in to a closed deck block does that make the CC 2197cc so would that be classified as 2.1 or 2.2??????

Jam Performance

iTrader: (3)

Mus, go for the FP green on the 2.1, im going for a standard position GT30 on the 2.1 it would be a very good comparison as our cars would be virtually the same spec apart from the turbo's

banny sti

iTrader: (68)

That is the graph for the 2 litre, if you want I can also post up the graph for th 2.5 with the t+ .

Banny

Mus

iTrader: (2)

thanks banny i was on a phone earlier today arguing with a mate of mine that the graph was for 2 liter and he was so sure it was for a 2.5 lol

ki8lla i was thinking of the fp green but due to the lack of people that are using it, and everyone is on the Md321t there must be a reason why everyone is going for the md321t.
ive got a bit of time i guess to decide i just dont want to buy the fp green and then find the response to be poor i know they work well on a 2.5, to be frank all i want is the widest power band with full boost coming in before 4k. is that too much too ask..
and i dont want to go for a laggy turbo and then be forced to go and get head work done in order to bring the power early.
and the worst thing is they arent many people that are running similar spec to what im going to be having otherwise it would of been good to compare but then again bannys graph looks good enough for me and with meth or bioethanol which is good for the envoiremnt mix im sure i should see a slightly better spool up which should suit my driving style.

Mus

iTrader: (2)

thanks banny i was on a phone earlier today arguing with a mate of mine that the graph was for 2 liter and he was so sure it was for a 2.5 lol

ki8lla i was thinking of the fp green but due to the lack of people that are using it, and everyone is on the Md321t there must be a reason why everyone is going for the md321t.
ive got a bit of time i guess to decide i just dont want to buy the fp green and then find the response to be poor i know they work well on a 2.5, to be frank all i want is the widest power band with full boost coming in before 4k. is that too much too ask..
and i dont want to go for a laggy turbo and then be forced to go and get head work done in order to bring the power early.
and the worst thing is they arent many people that are running similar spec to what im going to be having otherwise it would of been good to compare but then again bannys graph looks good enough for me and with meth or bioethanol mix im sure i should see a slightly better spool up which should suit my driving style. when you doing yours ki8lla cause a little birdie told me you bought a box and a few other goodies that i wont expose just yet.

banny sti

iTrader: (68)

This is the 2.5 graph,



Banny

dynamix

iTrader: (3)

A veritable mound of torque