C1 Procharger on a built 2.8 30v, Doing something different

[Sjjarvis92]

Been a fan of my 99 a4 quattro since I got it. I have done a lot of maintenance and repairs to bring what was a 1000 dollar used car back to life. The 2.8 is a tease of a motor basically being a 2.7t without forged pistons required to run sufficient boost. While seeing what 4 rings did with his custom G1 blower swap got me thinking a few days ago. Not going to beat around the bush but considering the people that have the g1 or g2 and try so hard to get those extra psi out of that undersized s/c why not just get a custom bracket made and use the procharger C1 which goes up to 24lbs. Benefits of the pes kit are yes low end power and instant boost but that's it. While I know that low end torque is fun to have, I would much rather have a car that continues to build power to the redline. We all know that a centi-supercharger is basically a turbo on the drive belt so it builds more boost the faster you go. It is much more compact than the pes kit as well. Also it doesn't generate as much heat as the roots or twin screw setups making it very efficient.Being fully self contained means no oil lines need to but made for it to function, the oil in the blower gets changed every 6k miles (that's sick). So basically build a custom mounting plate for the charger, get your piping and intercooler setup fabricated (easy as shit), custom belt and any other supporting mods like forged pistons (must-have), injectors and ecu tune ect. I have a friend who operates a cnc at his work and could make my bracket for me easily. My dad has everything else as far as tools and equipment goes and is an amazing fabricator. So here is my idea people and when the time comes I'll consider being one of the first to do this or if it doesn't work out I'll have to single turbo like the rest.

[down_n_dapper]

Definitely interested. Keep us posted!

Sent from my Nexus 5X using Tapatalk

[GrapeBandit]

nice man. hope this works out. your biggest issue will be a tune. stand alone or maestro is probably the only options as i know of nobody that writes tunes for SC'd 2.8's. so obviously a custom tune is in line

[Sjjarvis92]

nice man. hope this works out. your biggest issue will be a tune. stand alone or maestro is probably the only options as i know of nobody that writes tunes for SC'd 2.8's. so obviously a custom tune is in line

Actually I consulted 034 about the project and they said a tune could easily be done as well as the project as a whole. Since the boost is linear with the rpms I'd imagine tuning would be simplified vs the various tunes for the pes kits.

Sent from my D6708 using Tapatalk

[Nollywood]

Different approach to more power, than a stock 2.8 30V can provide.

I'll be watching this one.

[GrapeBandit]

Different approach to more power, than a stock 2.8 30V can provide.

I'll be watching this one.

id like to see a 2.8 natural aspiration build. bored and stroked, with high compression pistons. compression so high that the car barley idles lol

[Mad Cow]

You don't even need a standalone, just swap over a 2.7t ecu and engine harness. You would need a custom tune, but the platform's well documented so there's no shortage of talent.

[Sjjarvis92]

Different approach to more power, than a stock 2.8 30V can provide.

I'll be watching this one.

It will be a slow project and will take some time but this weekend Ill be looking at the engine bay for a good position for the mounting bracket. If you look at the jhm kit they made for the b6/b7 s4 the had it mounted way down low under the frame rail behind the fig light. I'd like to keep it in the stock airbox location to make the kit more servicable

Sent from my D6708 using Tapatalk

[GrapeBandit]

You don't even need a standalone, just swap over a 2.7t ecu and engine harness. You would need a custom tune, but the platform's well documented so there's no shortage of talent.

his car is DBC, so you need ecu, engine harness, tb, pedal cluster. basically a wideband conversion to a 2.8, no?

[Sjjarvis92]

Yes 034 said that would be the best thing to aid the tuning. The plan for the block is id spend the extra money to reinforce the internals so i dont melt the pistons like the various instances with the pes kits. Project b5 has some rods with arp bolts for 600, custom 82.5mm forged pistons would be around 1300 or so. Upgrade the Rod bearings if the block is apart for good measure. The two bolt mains on the crank do not worry me so much anymore, Unless i was planning on 800+ hp I was told they would be fine.

[Sjjarvis92]

I know the s4 stuff is all dbw so ya that would have to go too. Audis4parts.com is a great site to pick up used parts for cheap so i shop with them a lot. But what do you mean by wideband conversion? I see that term throw around a lot on the forum

[nynoah]

Now the question is cost per hp increase

[Sjjarvis92]

Well the Original project was to do a stk conversion using the same built block specs so taking the actually engine parts out of the picture the cost would be around 1500-2300 to get the procharger c1, lets say another 1500 for the custom tune, So around 3k min and 4500 max. The procharger site lists this blower up to 675hp on a N/A engine that is within the range of 150-325 stock hp which the 2.8 easily falls into. So if the project falls through then I will still be ready to do stk with a precision 5858.

[Nollywood]

I see this costing more, than a 4.2 V8 32/40V swap. A lot more.

If there is even the remote thought of a STK, I would strongly consider a V8 as the basis for this project.

Or a 2.7T. Attempting to go with a boosted 2.8....by the time you've built the motor, fabricated brackets here and there, got a tune, or gone stand alone, you're going to spend a shed load of dough, reinventing the wheel. Than if you'd thrown a 2.7T in there to begin with.

Unique? Yes. Cost effective? I doubt it.

[GrapeBandit]

I see this costing more, than a 4.2 V8 32/40V swap. A lot more.

If there is even the remote thought of a STK, I would strongly consider a V8 as the basis for this project.

Or a 2.7T. Attempting to go with a boosted 2.8....by the time you've built the motor, fabricated brackets here and there, got a tune, or gone stand alone, you're going to spend a shed load of dough, reinventing the wheel. Than if you'd thrown a 2.7T in there to begin with.

Unique? Yes. Cost effective? I doubt it.

there are less differences between the 2.8 and 2.7 than most realize. they are essentially the same long block with the difference being the amout of main bolts(not an issue), pistons(not an issue if going rebuild), and the better head/cams on the 2.8. it makes more sense to start with a 2.8 just because the heads/cams

[Bordom]

This adapted to a 4.2 would be to tits

Everything graciously mispelled by Android

[aysix]

Who broke a 2.8 piston? Single turbo it as if you were going to do a 2.7t, you wouldn't even need to pull the motor. Someone might be able to tune that for you.

[Sjjarvis92]

I said I will be building the brackets myself, I have all the tools and equipment at my disposal (dad is a hell of a fabricator). 4 welders, grinders air arcs for cutting some nice thick steel plate, literally everything. For the actual physical kit i just the centrifugal supercharger for the initial fitment testing and bracket mock up. The v8 while tempting would be out of the question for me and would not have room for the blower setup unless i drop 8k on the jhm kit. The amount of similarities between the 2.8 and 2.7 are huge. Even if i bought a 2.7t i would still bore it out to 82.5mm and use my heads and swap rods, so its a waste to pick one up at all.

[Sjjarvis92]

Plenty of people have on the scaudi forums. The 2.8 pistons are cast and the rings on them arent spaced for boosted applications, so while yes i could single turbo and have it be done it would only be a matter of time before it broke. Just going to do it right the first time.

[Nollywood]

If you went with a 32V, (ABZ) you'd have more room for a side-mounted blower. More than you would, with a 30V motor. The 32V heads are quite compact.

[Sjjarvis92]

the added length of the 4.2 might affect it moreso than the width making the bracket fit. Id be down 1700 bucks and have to drive over 200 miles to pick up the nearest 4.2 32v. 1700 bucks i can get the c1 or vortech v2/v3 blower and start the project outright, im not willing to go standalone to tune the 4.2 even if i could get it. Swapping the harness and ecu, and converting to dbw building the block and basically having a above spec 2.7t is easier for me personally as its more plug and play which is exactly what 034motorsports said would work.

Edit. Found another v8 in my area for 650 but still would rather build the current engine

[M-Hood]

id like to see a 2.8 natural aspiration build. bored and stroked, with high compression pistons. compression so high that the car barley idles lol

Been done before by Kris at Dynamic Racing Solutions which had built my first 2032cc stroker. He had built a B5 A4 high compression NA V6 rally car years ago.

[GrapeBandit]

Been done before by Kris at Dynamic Racing Solutions which had built my first 2032cc stroker. He had built a B5 A4 high compression NA V6 rally car years ago.

any links to his build or any videos?

[Tree.Audi]

excited to see how this turns out

[czum09]

Awesome. Tuning will be the biggest pain. Good luck though!

[M-Hood]

any links to his build or any videos?

Not that I know of or could ever find after seeing the car at his shop.

[Sjjarvis92]

Different approach to more power, than a stock 2.8 30V can provide.

I'll be watching this one.

It will be a slow project and will take some time but this weekend Ill be looking at the engine bay for a good position for the mounting bracket. If you look at the jhm kit they made for the b6/b7 s4 the had it mounted way down low under the frame rail behind the fig light. I'd like to keep it in the stock airbox location to make the kit more servicable

excited to see how this turns out

Ya same here been looking around at other side mount blower kits with my dad and had a good laugh at what's out there (not much). The mount we will make will at least have 1/4in steel plate cut and molded to the blower and engine block for rigidity under boost

Sent from my D6708 using Tapatalk

[M-Hood]

Sounds like your looking to do what another B5 member did with his A4 1.8t, when he converted it to a super charge instead of the turbo.

[Sjjarvis92]

Sounds like your looking to do what another B5 member did with his A4 1.8t, when he converted it to a super charge instead of the turbo.

Ya saw that thread too. 2.8 motor that already had a offset supercharger system makes the project a little more viable though

Sent from my D6708 using Tapatalk

[Bordom]

Sounds like your looking to do what another B5 member did with his A4 1.8t, when he converted it to a super charge instead of the turbo.

Waaa? Link?

Ya saw that thread too. 2.8 motor that already had a offset supercharger system makes the project a little more viable though

Sent from my D6708 using Tapatalk

Everything graciously mispelled by Android