New guy to Audi looking for build advice.

[James_720]

Hey everyone, just a heads up to start with. Yes, I have searched all over for info. A lot of the info I've found has been very conflicting so I wanted to start a discussion here. I'm not new to building cars/trucks by any means. But this is my first Audi build. I will be doing a build thread at some point as well. But this is strictly for technical discussion.

My car is a 1999 Audi A4 Avant Quattro 2.8/5mt. The car has 191k on it, runs and drives perfect. Has a few things here and there such as needing lower control arms and some trans mounts. I also have a mystery whine in 1st gear, but the trans is still super smooth. My plans are to daily the car as is besides some coilovers and wheels for now as I gather parts and info for a full build.

The info I'm looking for here is for the motor and trans. My plans are to build the 30v 2.8 and PES boost it. Nothing crazy, but I plan on cams, possible shaved heads, forged internals, and around 10-12lbs on E85. I don't plan on going crazy, but enough to hold the power. I'm also interested in having the trans built to a certain degree.

First things first, I've found some forged rods, but they say they are for the 2.7 and 2.8. Are they truly the same? I've searched this, but never found true specs to compare the 2.

Second, what pistons would you recommend? What are the true specs I would need for a simple hone job, as long as the cylinders are in good shape which I expect them to be.

This is just a start of my questions/concerns so please be patient with me!

Thanks in advance!!

[Turbo_B5]

It would be cheaper to v8 swap.


Sent from my Jailbroken iPhone 6s 9.0.2 using Tapashit

[James_720]

Knew someone would say it. I get that, but that's not what I want to do. Done many ls swaps, want to stay with the 30v since most people don't.

[Turbo_B5]

Knew someone would say it. I get that, but that's not what I want to do. Done many ls swaps, want to stay with the 30v since most people don't.

Have you found a supercharger already?

[James_720]

Not other than new from PES. Been checking eBay as well.

[Turbo_B5]

Not other than new from PES. Been checking eBay as well.

they don't come up often used. good luck with your build. Please make a build thread to keep us updated.

[tar]

Not gonna be a ton a info on these 30v builds. Main one I can think of is rezie from the now defunct genesis motorsports. A1, and a2 german has that car now if I remember right. As far as internals I have no real idea. Alot of parts will probably need to be custom ordered. Its not the best build motor to be honest but if ur set and have the money go for it. Most 1.8t cars that are built right have 10-20k into em anyways.

You won't need a built trans as the 01a is good for ur power goals. Stage 3-4 clutch, jhm shift trio and mounts would be all you need unless your planning to mess with the diff to 4:1 or lsd. Maybe pickup a spare block to build and daily with shelf pes kit for now to see how you like it

[A1 A2 German]

Hate to pop your bubble however the 2.8 V6 is the worst VAG motor ever built.

Sure, it's reliable, all VAG motors where. It would be a better idea so swap a 2.slow with a turbo then the 2.8. It is literally the king of kings thee worst responding motor in VAG history to respond to induction.

It was so excitiZzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz......... .............................

The only way you'd do it is to be different, don't expect to be quick, it's "meh" and the power curve is so....linear, it's just so unappealing.

Figured I'd luk.

[Seerlah]

If you are going to add forged internals, might as well turbo it. It has been done before. Forged internal single turbo setup.

[a4kamila6]

Exacty what seerlah said. If you are going to source forged pistons, get different rods, and have the crank mains drilled for an additional two bolts, you can put down some power. Id say s4 intake and your choice of turbo or if you wanna spice things up, i have been wanting to do a centrifugal supercharger on my 2.8 in future... maybe you can beat me to it and try that out. your call but either way gonna cost a lot.


Sent from my iPhone using Tapatalk

[bmos]

The only way you'd do it is to be different, don't expect to be quick, it's "meh" and the power curve is so....liner, it's just so unappealing.

The 2.8 sucks because it has a linear powerband?

[A1 A2 German]

^
And is weak and lacks any power.

It has a very weak curve, there's no punch, and lacks any acceleration feeling. The only thing it has going for it is it goes right outta the box 0-35mph..it happens fast yet levels out to to the most power slow pull ever, the gear change to second would never chirp 2nd ever. There's no thrust. If the power band of a ko4's power band was the grade of a paved road no vehicle could drive up it as far too steep, if the charger 2.8 power curve was a road a golf chart could drive up it.

Oh, pfff, yeah I see now...that's what I get for typing that out on my phone.

[Murph_129]

I swear I've seen someone who was working on a 30V single turbo kit? Probably 034.. but I don't see anything on their site.. Just the 2.7T single turbo.

[a4kamila6]

I swear I've seen someone who was working on a 30V single turbo kit? Probably 034.. but I don't see anything on their site.. Just the 2.7T single turbo.

Yea cause their kit ran on a stock 2.8 which couldnt hold more than 8-10 psi. If you are building the engine, anything is possible.


Sent from my iPhone using Tapatalk

[Seerlah]

The STK for the 2.7t was basically built from Max's 2.8 build. They simply had a damn good idea and ran with it. It was initially a project for the 2.8 that turned kit, using the 2.8 manifolds. If wanting to do forged internals to the 2.8, might as well get boost friendly pistons. The pistons is what makes the 2.8 not FI freindly. You need a lower compression ratio piston.

[A1 A2 German]

If only..



....they used the Vr6 instead.


Good greif think of the built cars we'd have.

[Seerlah]

I'd have one. Not a fan of the 2.7t, even though I do acknowledge it as a great engine. But I would probably have a 1.8t BT as a dd and the vr6 BT as a weekend warrior.

[A1 A2 German]

I'd have one. Not a fan of the 2.7t, even though I do acknowledge it as a great engine. But I would probably have a 1.8t BT as a dd and the vr6 BT as a weekend warrior.

Yep, spot on. The only way I'd consider a 2.7t ever, is if it had a solid worked out flawless "above/behind the cylinder heads single turbo system". Pulling the motor and trans is hogwash, guys have had to pull their entire perfect working setup motor and all......all because a single ~10mm nut backs out on a single waste gate of one turbo. All that, for a 30 second tightening job. Now the smart thing is to safety wire the the nuts (of has been), but those motors eat turbos.

To do it once that's cool, clean everything up, do it once, check everything out....but again and again...nawh.

[James_720]

If you are going to add forged internals, might as well turbo it. It has been done before. Forged internal single turbo setup.

I'm not opposed to this option. But I would like to keep the 2.8 and do forged internals either way at this point. Can't say that will never change but I've already got some parts on the way...

Exacty what seerlah said. If you are going to source forged pistons, get different rods, and have the crank mains drilled for an additional two bolts, you can put down some power. Id say s4 intake and your choice of turbo or if you wanna spice things up, i have been wanting to do a centrifugal supercharger on my 2.8 in future... maybe you can beat me to it and try that out. your call but either way gonna cost a lot.


Sent from my iPhone using Tapatalk

Definitely going boosted and forged. But like I said, I'm not opposed to a big single, possibly duals...

I swear I've seen someone who was working on a 30V single turbo kit? Probably 034.. but I don't see anything on their site.. Just the 2.7T single turbo.

Man if someone was, that may make my decision to go to turbo much easier...

Yea cause their kit ran on a stock 2.8 which couldnt hold more than 8-10 psi. If you are building the engine, anything is possible.


Sent from my iPhone using Tapatalk

Definitely getting forged internals... As a matter of fact, rods are on the way.

The STK for the 2.7t was basically built from Max's 2.8 build. They simply had a damn good idea and ran with it. It was initially a project for the 2.8 that turned kit, using the 2.8 manifolds. If wanting to do forged internals to the 2.8, might as well get boost friendly pistons. The pistons is what makes the 2.8 not FI freindly. You need a lower compression ratio piston.

Is there a link to any of this info? I'm ready to gain some knowledge...

[James_720]

Did some more diggin... Seems the SC option will be a no go at this point. https://store.034motorsport.com/034m...turbo-kit.html

Does anyone here have a good contact for 034 that I can bug with some questions??

Also, I assume this will work on a 2.8 if I run a 2.7 intake correct?

[Bordom]

Did some more diggin... Seems the SC option will be a no go at this point. https://store.034motorsport.com/034m...turbo-kit.html

Does anyone here have a good contact for 034 that I can bug with some questions??

Also, I assume this will work on a 2.8 if I run a 2.7 intake correct?

Yup. Are you still planning on only doing rods? Because the cast pistons will explode well before the rods go lol

Everything graciously mispelled by Android

[James_720]

Yup. Are you still planning on only doing rods? Because the cast pistons will explode well before the rods go lol

Everything graciously mispelled by Android

Oh no! I plan on pistons as well. Cams and oversized valves as well. Thats the stuff I'm needing info on. Such as if the 2.7 pistons are the same as the 2.8 and so on...

[Bordom]

Oh no! I plan on pistons as well. Cams and oversized valves as well. Thats the stuff I'm needing info on. Such as if the 2.7 pistons are the same as the 2.8 and so on...

2.8 bores are 82.5mm vs the 81mm of the 2.7. Many dudes overbore to 82.5mm and use those oversized pistons which are compatible with the 2.8.

If I were you, (and I will be doing this in a few years), get yourself at least a 3 angle valve job on the intake and exhaust, port out the intake trumpets on the 2.7 intake and enlarge the runners, then take your 2.8 cams and have them reground to a moderately more aggressive profile.

You're pretty much set afterwards and add in your supporting mods.

For the trans, if you're going to have it rebuilt, drop in a TDI 5th while you're at it

Everything graciously mispelled by Android

[James_720]

2.8 bores are 82.5mm vs the 81mm of the 2.7. Many dudes overbore to 82.5mm and use those oversized pistons which are compatible with the 2.8.

If I were you, (and I will be doing this in a few years), get yourself at least a 3 angle valve job on the intake and exhaust, port out the intake trumpets on the 2.7 intake and enlarge the runners, then take your 2.8 cams and have them reground to a moderately more aggressive profile.

You're pretty much set afterwards and add in your supporting mods.

For the trans, if you're going to have it rebuilt, drop in a TDI 5th while you're at it

Everything graciously mispelled by Android

Awesome bud! Thats some of the info I'm lookin for! I'm going to order the 034 rear diff mount this week, so I'm going to start talking to them about sourcing some of the internals as well as the big single turbo kit. Thats the route I've decided to go, something about a turbo... lol.

On another note, trying to buy my wife an STI in the next week or two so after getting the parts I need now I will have to save for a few weeks to get a good chunk towards the Suby

[redline380]

http://www.audizine.com/forum/showth...2#post11457792

[zuphzuph]

So I know this thread is discussing a V6 setup. I'm looking to run an eliminator 2871r on a 2000 a4 w/ ATW motor with some kind of tune. Anyone have experience or know a user running this setup? Looking for some advice/guidance.