Big Tuurbo Upgrade!!!

[a4mafia]

Im lookng to buy a big turbo for my 99 a4 1.8t Im looking at the gt3071r and was wondering if anyone has an input on them or another big turbo. What all would i need (minimal) for the gt3071r?

[theskuh]

there are a lot of threads to read so a do a good search. With a turbo that big you are going to have to do rods in the engine and a clutch for starters.

you need a bigger intercooler
software
injectors
downpipe
exhaust

lots of supporting mods Search and you will find.

[bassed]

This is why the Projects subforum would kick arse.

[pipe7284]

^^^^^was thinking the same thing!!!!!

[Jeff]

Im lookng to buy a big turbo for my 99 a4 1.8t Im looking at the gt3071r and was wondering if anyone has an input on them or another big turbo. What all would i need (minimal) for the gt3071r?

You will definitely need internal upgrades of at LEAST rods at the bare minimum. But typically if you're going that far, most people might as well upgrade everything else. But all you really need is rods. If you plan on being able to rev up to 8000-9000rpm, you will need to rebuild the head with stiffer valve springs and new retainers. My current setup is able to rev up to 8500, which really WAKES UP the 3071R. While you're working on the head, longer duration cams would also help a lot and open up your top end. On the drivetrain, a clutch is definitely needed. Everything else just comes thereafter--for there is no real limit on how much you can do (which is why modding cars is evil). :)

With all these mods, expect around 380-400whp (depending on setup and tune).

[mike-2ptzero]

You will definitely need internal upgrades of at LEAST rods at the bare minimum. But typically if you're going that far, most people might as well upgrade everything else. But all you really need is rods. If you plan on being able to rev up to 8000-9000rpm, you will need to rebuild the head with stiffer valve springs and new retainers. My current setup is able to rev up to 8500, which really WAKES UP the 3071R. While you're working on the head, longer duration cams would also help a lot and open up your top end. On the drivetrain, a clutch is definitely needed. Everything else just comes thereafter--for there is no real limit on how much you can do (which is why modding cars is evil). :)

With all these mods, expect around 380-400whp (depending on setup and tune).

If your doing all that just skip the 3071r and go for the 3076r.

[Pete@IE]

Ya, I was going to say- we made 425 whp on a bone stock AWP with a set of our drop in rods and a 3071r, no mods to the head at all, and stock intake manifold.

I do think the 3076r is a better turbo though. I keep saying when the 3071r blows up, we'll swap it out- but it keeps not blowing up.

I think 440whp is possible when we change the intake manifold and possibly throw in a set of cams, but that's really about it for that turbo, wheras a 3076r would do 485-500whp.

500+ whp I would recommend going to a 20mm rod / piston setup, even if its just AEB pistons.

[Poopie]

Ya, I was going to say- we made 425 whp on a bone stock AWP with a set of our drop in rods and a 3071r, no mods to the head at all, and stock intake manifold.

I do think the 3076r is a better turbo though. I keep saying when the 3071r blows up, we'll swap it out- but it keeps not blowing up.

I think 440whp is possible when we change the intake manifold and possibly throw in a set of cams, but that's really about it for that turbo, wheras a 3076r would do 485-500whp.

500+ whp I would recommend going to a 20mm rod / piston setup, even if its just AEB pistons.

really 485 to 500 whp? I don't believe you. i would LOVE to hit 485 to the wheels. i have a gt3076 with an .82 ar housing, aeb head and 034 valve springs for a bit higher revs.

[bassed]

really 485 to 500 whp? I don't believe you. i would LOVE to hit 485 to the wheels. i have a gt3076 with an .82 ar housing, aeb head and 034 valve springs for a bit higher revs.

I don't believe either if this is on pump. Race with 30 psi+ maybe, maybe.

[mike-2ptzero]

Ya, I was going to say- we made 425 whp on a bone stock AWP with a set of our drop in rods and a 3071r, no mods to the head at all, and stock intake manifold.

I do think the 3076r is a better turbo though. I keep saying when the 3071r blows up, we'll swap it out- but it keeps not blowing up.

I think 440whp is possible when we change the intake manifold and possibly throw in a set of cams, but that's really about it for that turbo, wheras a 3076r would do 485-500whp.

500+ whp I would recommend going to a 20mm rod / piston setup, even if its just AEB pistons.

Are you talking FWD or AWD? Because you need to make that perfectly clear when posting anything about WHP, because 99% of the guys here are AWD which is going to put down 8-10% less whp then a FWD making the same CHP.

So your 425 whp on a FWD car is going to be closer to 376whp on a quattro car.

[sean1.8t]

^he said "stock AWP"

when has there ever been an AWP motor in an A4. common sense

[mike-2ptzero]

^he said "stock AWP"

when has there ever been an AWP motor in an A4. common sense

LOL, yes he did but he didn't say what it was in. There are plenty of guys here that are running VW transverse blocks in their A4's. So if he stated fwhp or awhp it would make it more clear for everyone to know.


From the looks of it both poopie and Bassed seemed to take his info like it was a quattro A4. I just think it would have been much clearer if he would just mention if it was fwhp or awhp.

[titaniumbullet]

WELL... I dont know of any bigger turbs than that.. I saw that in a DOHC VTECH Honda.... it went form going around 13 to a 10sec car with no NO2 Boost... gt3071r's are pritty beefy turbs....

[Don Supreme]

go 3076...

I would think 480 awhp would be possible with every supporting mod @ 30 + psi. It has done 505 fwhp on a transverse setup @ probably 28-29 psi and all supporting mods - cams, etc.

[sean1.8t]

LOL, yes he did but he didn't say what it was in. There are plenty of guys here that are running VW transverse blocks in their A4's. So if he stated fwhp or awhp it would make it more clear for everyone to know.


From the looks of it both poopie and Bassed seemed to take his info like it was a quattro A4. I just think it would have been much clearer if he would just mention if it was fwhp or awhp.

fair enough i suppose. i guess my mind works a bit different sometimes




that and i know the GTI Pete's talking about since he's just 45 minutes away

[bassed]

LOL, yes he did but he didn't say what it was in. There are plenty of guys here that are running VW transverse blocks in their A4's. So if he stated fwhp or awhp it would make it more clear for everyone to know.


From the looks of it both poopie and Bassed seemed to take his info like it was a quattro A4. I just think it would have been much clearer if he would just mention if it was fwhp or awhp.

I just read whp and didn't even pick up he had dropped the engine code in there till reading this.

WELL... I dont know of any bigger turbs than that.. I saw that in a DOHC VTECH Honda.... it went form going around 13 to a 10sec car with no NO2 Boost... gt3071r's are pritty beefy turbs....

They are not so big compared to what some of us here run there are a bunch of 3076+ size turbo's in some of the cars, including Mike's, Poopie's, mine and I think Don is at least a 3076 as well.

[Pete@IE]

Sorry I am used to FWD land and didn't think to add the "f"

fwhp ;)

[Don Supreme]

Don is at least a 3076 as well.

35r here.

[Jeff]

If your doing all that just skip the 3071r and go for the 3076r.

Who says im not?

[mike-2ptzero]

Who says im not?

I was actually saying in general, so if someone was going to do all of those things they might as well go right for the GT3076r and skip the 71 all together. I would only suggest the 71r to someone that is only going to throw in rods.