914RS4 Tube Chassis 996 Suspension Audi 2.7TT Stage 3, ADDED RECAROS Options

[csdilligaf]

My Audi Donor was the same way. A little love tap in the back end leaving a perfectly good running 2.7TT up front.

[Curbandgutter]

Yep exactly! Drove it right up onto the trailer. Fires right up.

[eeyore]

What are your plans for intercooling -- air/air or water/air?

[Curbandgutter]

For simplicity ( I know it's an oxymoron for this build) I am going to use the factory setup. I think that it is air/air. Since I am planning to open up the back end 2 1/2" on each side to accommodate the wider 996 track, I will take advantage of that and place an intercooler on each side but most likely 50% larger and mounted vertically. I will fold the rear 1/4 panel into them and create a reverse scoop to drag air into them. I plan on venting out through the rear in between the tail lights with some type of expanded metal. Maybe like the one that is on the engine lid.

[Andyrew]

Factory intercoolers are air to air and are not very efficient. They make thicker intercoolers specifically for the S4, specifically chineese versions that are very affordable. Combine that with E85 or W/M injection and you should be good for a considerable amount of HP.


I would go something a hair larger like this if your considering staying air to air.
http://www.ebay.com/itm/Rev9-Turbo-Side-Mo...XMO&vxp=mtr

But you would probably be better off going with a pair of bar air to water intercoolers and just mount a single large radiator in the fender.
http://www.ebay.com/itm/Liquid-Air-Interco...C7z&vxp=mtr

[Andyrew]

Noticed forged diverter valves, Thats a plus (IMG:style_emoticons/default/smile.gif)

Pull the ECU and see if there are any markings on it. I bet at the very least this car was tuned, probably sell that ecu for an easy buck if your going a custom engine management system.

[csdilligaf]

There really is not an affordable option for a stand alone engine management for this motor. There are people who tried with a $5K version or more and had nothing but trouble and never got it to work right. We want to build a car, not take a year to learn what others already know and are good at. The factory ECU has a huge following and tuners with the education and skill it takes to hack and do what ever you want are plentiful. I have found Motoza Performance to be the best, easiest, most helpful and cost effective. For around $400-$500 they give you the software to reflash the ECU, the cable to do so from a laptop and OBD2 port and the first version with the basic tune. This allows you to get up and running and run the data logging that gets emailed to them and they will tweek things until you are happy. If later you go up to bigger turbo's or go to E85 you just pay the difference of the two stages pricing and they help you out again.

[Curbandgutter]

Andrew thanks for your input. But yes we're sticking to stock engine management with tuners that work with them. Thanks for the info on those forged diverter valves, I didn't think they were stock but really didn't know what I was looking at. I have a lot of learning to do on this motor. I'm glad you're around so that I can glean information from you. As far as intercoolers im thinking of going with this company http://bellintercoolers.com/how-to-order/c...ickness-airair/

[Curbandgutter]

Ok so now I'm the owner of a Cayman S G87.21 transaxle. Should be here by Feb 6th. Well looks like I'll be pretty busy from here on.

[Andyrew]

Megasquirt has been effectively utilized on that motor, but I agree the factory ECU is more than capable. I am utilizing the factory ECU as well and know it has and will support my setup just fine as I ramp up the power.

Seriously pull the ECU, Most tuners will mark it. You might find it tuned by a reputable tuner who will set you up on a big turbo file and give you advice on what you need injectors, fuel pump, maf, ect ect.

Custom intercooler is a fantastic way to go on a project of this nature. If you have the ability to weld aluminum I really think you should build a twin air to water intercooler setup in front of the engine (you will have plenty of room).
This will allow you to keep the intake plumbing short and in the engine bay vs having to shoot to both sides of the fenders. Should help with spool as well.

[Andyrew]

Ok so now I'm the owner of a Cayman S G87.21 transaxle. Should be here by Feb 6th. Well looks like I'll be pretty busy from here on.

Looks nice. Going to get a LSD for it? What did you pay for it?

[Curbandgutter]

Yes LSD from CMS motorsports. Chip already had his done. Paid $1650

[jd74914]

As far as intercoolers im thinking of going with this company http://bellintercoolers.com/how-to-order/c...ickness-airair/

You can't go wrong with anything from Bell. If you need technical support Gerhard Schruf is awesome! I've bought air-to-air and air-to-water intercoolers from them a few times (industrial usage but really no difference from automotive) and their prices really aren't too bad considering the quality.

[csdilligaf]

CMS motorsports sells and installs the Wavetec LSD. They are $1255 plus install. Everyone has good reviews of it and it is made in the USA so I will give it a try. I have always had Quaife so the Wavetec will be new for me. Anyone have personal experience with them?

[Curbandgutter]

Well tranny came in today. Lifting car off of jig tomorrow. Will do a twist test before installing suspension. Huge milestone (IMG:style_emoticons/default/cheer.gif)

[Cracker]

Good for you...congratulations! (IMG:style_emoticons/default/cheer.gif)

T

[Curbandgutter]

Well she's off the jig. Im going to try and do the twist test today. However, I have to smoke a briskett for the super bowl so the twist may have to wait.

[Curbandgutter]

Bolted up rear suspension. After everything is dialed in, I will bead blast the entire suspension and powder coat the calipers in red.

[csdilligaf]

Looks like you stretched the wheel base just the amount you wanted too. Looks good. And the one tube you thought would be close at on the rear suspension looks like it just cleared. Can wait to see it on the ground with wheels and tires.

[tygaboy]

Looks like you stretched the wheel base just the amount you wanted too. Looks good. And the one tube you thought would be close at on the rear suspension looks like it just cleared. Can wait to see it on the ground with wheels and tires.

(IMG:style_emoticons/default/agree.gif) and I'm going to take a wild guess that csdillgaf and I aren't the only ones who're chomping at the bit to see this bad boy as a roller. So, Rudy, hurry the hell up! (IMG:style_emoticons/default/poke.gif)

We want video of you sitting in it, on a milk crate, steering wheel in hand (bonus points if it's not even mounted on the column) doing your best impression of turbo flutter/blow-off valve/waste gate noises!

Come on, we're waiting: (IMG:style_emoticons/default/popcorn[1].gif)

And of course you know what I really mean by all this idiocy: LOVE your build!!! Can't hardly wait to see the progress each post. (IMG:style_emoticons/default/smilie_pokal.gif)
Chris