IHI POWER!! Booked in at Jabba

[ibizacupra]

yep.. go big BT ... makes use of actual airflow potential then

 

[Yumann]

yep.. go big BT ... makes use of actual airflow potential then

Slowly getting there

Either a gt2871r or a gt3071r

What are your opions on these?

 

[Yumann]

Race Power Motorsport

Got a number for them?

I've also been in contact with pride race engines who were recommended to me by cosworth funnily. Good price too!

 

[myk3]

Slowly getting there

Either a gt2871r or a gt3071r

What are your opions on these?

i would recommend gt3071r if you are going to rev to 8k and do all the necessary to the head and

gt2871r if you are not going to go nuts on it. a guy on vortex tells me he gets full spool on the 2871r at around 3600rpm :O i think i would go with this turbo, it will also make over 400bhp.

i believe the gt3071r will make full boost around 4.5ish or there abouts, but some serious kick when it does.

seeing as i am having all the necessary done to my engine i might drop a 2871r in a yr or so. who knows. or just stop wasting my money and put more of it towards the mortgage deposit lol

edit:
also to add it depends on the A/R you go for, manifold, engine displacement etc which ill affect the spool.

maybe a with a good tune, manifold etc you can get a gt3071r to spool around the 4k mark. which would be nice

 

[Yumann]

i would recomend gt3071r if you are going to rev to 8k and do all the nessasary to the head and

gt2871r if you are not going to go nuts on it. a guy on vortex tells me he gets full spool on the 2871r at around 3600rpm :O i think i would go with this turbo, it will also make over 400bhp.

i belive the gt3071r will make full boost around 4.5ish or there abouts, but some serious kick when it does.

seeing as i am having all the nessasary done to my engine i might drop a 2871r in a yr or so. who knows. or just stop wasting my money and put more of it towards the mortgage deposit lol

Its going to be one of these two turbos thats for sure. However some of the stuff that goes round on vwvortex is a bit iffy to say the least. You cannot judge lag by when a car makes full boost its more to do with off/on throttle response.

I would love to see mid 400 power and i am sure the gt3071r could do it on v-power. The question is how will it affect drivability. To much to little is whats bothering me.

As for the gt2871r from what I gather it spools very quick and totally savage in 1-3 gears again maybe a bit to much. Cause it spools to fast it might be a handful.

From the information I have gathered the logical choice seems to say 2871 however my heart says 3071. Anyway I pretty sure that the 2871 can be swaped out for a 3071 with minimal modification to the dp.

Edited: It will be a .64 A/R no question about this.

 

[myk3]

yah true the stuff on vortex can be a bit iffy as you say. you want the gt30 for the mid 400s! though the gt2871r is a great turbo i would look to do this first, in respect there both great. if i do ever want to go bigger and better i would be debating the two for a while. just do the research and pick the one you want.

just out of interest where are you sourcing the the manifold, inlet and DP that will join the current catback? to suit the RHD?

thanks

myk3

 

[minimivic]

.64 3071r thats what I'm going with.
Be good to get input from Eddy on the spool side of things with this turbo.

 

[rashcupra]

I did'nt see you were getting the BT conversion in any other posts so just read through all this. I would say 350 has got to be your limit surely in the mk4. not from a tuning position, but from a drivability situation. I would say that once you have had that all done you will need to spend money on making other things more reliable and tighter. Surely some monster money on suspension set-up and chasis set up will be of more use than ringing out even more power.

a Quaife ATb would also be of a lot of use too.

I mean picture this, pull up to some lights on a damp evening, boyo pulls up next to you in a corsa. lights go green and said 1.4 corsa wastes you off the line. Why? cos you're sitting there spinning like a *****.

My mate has a corsa 2.0 turbo, and its about 300 bhp, sound great, looks fun, but it is such a pig to drive as all it ever does is spin up.

Thats where your money needs to go afterwards, getting the chassis half close to coping with that power, but i doubt its cheap. You only have to look at what Bill and the other BT boys spend on all the fancy tech stuff they add on.

But watching this very interested and hats off to you for being the first to do the mk4, i know there was another guy who harped on about doing it Chris cupra or something, but he never went ahead with it, i think he bottled like so many others have.

keep us all posted on this

so suprised no1 else hasnt put bigger turbo on the mk4 beezer cupra! i will get round to the quaife diff and some decent tyres when ive got a bit more money but im a bit skint at the mo will get sum pics up when done on a new thread

if you learn to control the power im sure more power doesnt mean more spin it will take some getting used to but it will be great FUN!

 

[Yumann]

yah true the stuff on vortex can be a bit iffy as you say. you want the gt30 for the mid 400s! though the gt2871r is a great turbo i would look to do this first, in respect there both great. if i do ever want to go bigger and better i would be debating the two for a while. just do the research and pick the one you want.

just out of interest where are you sourcing the the manifold, inlet and DP that will join the current catback? to suit the RHD?

thanks

myk3

I have done loads of research on both turbos on the web, forums, turbo suppliers etc. Its hard to be sure whats best for me without trying. Its a very tough choice

As for the mani it will be a full race manifold specific to rhd with custom dp and decat (scrapping the miltek cat). I know someone who will build me one or I could pay a wee bit extra for something special which I am still waiting to hear word on.

I'm pretty much ready to go now with everything in place. Not just slapped in a bt and hope for the best. I've taken a hands on approach to choosing the best parts possible and getting it ready for bt without corner cutting.

 

[Yumann]

Price isnt too bad, its the VAT that kills it then the diff bolts cost abot £97 in total you'll be spending £775... just dont show your girlfriend the bill.

Peloquin diffs come with bolt set, Quaifes however don't. Two options for bolt set, vw bolt set which is £89 or ARP bolt set which is bout the same price TBH both just as good as reflected by the price.

Its not the vat or the diff thats the killer its the fitting mate. Theres at least 12h labour. You wont get much change out of £1100 for the lot.


Edited Quaife might actually come with bolts as of 2006 worth checking.

 

[myk3]

yah im debating weather to do the same, but i would prob go with the gt2871r. im in no great hurry maybe next summer time is when i would be looking if i even do.

but its hard to find a place that will sell you a mani for the RHD car and the DP to suit. then bolt the turbo in place

 

[myk3]

Peloquin diffs come with bolt set, Quaifes however don't. Two options for bolt set, vw bolt set which is £89 or ARP bolt set which is bout the same price TBH both just as good as reflected by the price.

Its not the vat or the diff thats the killer its the fitting mate. Theres at least 12h labour. You wont get much change out of £1100 for the lot.


Edited Quaife might actually come with bolts as of 2006 worth checking.

i am having a pelequin fitted which i of course ordered from the states with all me other bits.

from research and even from some which have had experiance with the 2 the pelequin in meant to be better.

which is the reason i got the pelequing

 

[ibizacupra]

Slowly getting there

Either a gt2871r or a gt3071r

What are your opions on these?

Go gt30

 

[myk3]

bill, a bit off topic but do you sell or can you get hold of equal lenghth tube manis and the DP to attach to the miltek cat back for a t25 flange gt serise turbo for e.g.? i would prob be looking for a gt2871r. could my future plans in a yr or so...

 

[ibizacupra]

I have done loads of research on both turbos on the web, forums, turbo suppliers etc. Its hard to be sure whats best for me without trying. Its a very tough choice

As for the mani it will be a full race manifold specific to rhd with custom dp and decat (scrapping the miltek cat). I know someone who will build me one or I could pay a wee bit extra for something special which I am still waiting to hear word on.

I'm pretty much ready to go now with everything in place. Not just slapped in a bt and hope for the best. I've taken a hands on approach to choosing the best parts possible and getting it ready for bt without corner cutting.

you want a nice little setup like this

Talk race... talking 'proven' race - actual race, not road blast every now and then affair like most.



Consider increasing capacity if wanting a full on motor... by bore and or stroke combined. It will open up the options for bigger turbo's with significant gains in spool and tip in response.
extra bore makes a big difference to deshrouding 2 of the inlet valves... add some stroke from a eurospec type 2ltr crank and its a really good starting point for GT35 and very drivable (in 4wd platform!)

 

[ibizacupra]

bill, a bit off topic but do you sell or can you get hold of equal lenghth tube manis and the DP to attach to the miltek cat back for a t25 flange gt serise turbo for e.g.? i would prob be looking for a gt2871r. could my future plans in a yr or so...

as in the picture I have posted... this can be flanged T25 or T3... as well as IHI (pictured)

want serious power then T3 flange is the more appropriate.

 

[myk3]

looks good. how mcuh for the DP and mani?

 

[minimivic]

This thread is going way off the original topic but, what about the backdraft cast manifold. It looks good and is only £395. http://www.backdraftmotorsport.com/services/tuning-parts-and-services/techincal-spec
T25 flanged though I believe

 

[Yumann]

i am having a pelequin fitted which i of course ordered from the states with all me other bits.

from research and even from some which have had experiance with the 2 the pelequin in meant to be better.

which is the reason i got the pelequing

If I was to do it again I would use a peloquin. But I have no problems with the quaife nothing but praisefrom evryone who drives it.

 

[Yumann]

Go gt30

You rekon as big as that?

How easy will it be to use day to day?