Any progress on V8 engine swap options?

[truegearhead]

Originally Posted by specboxCO

This is what i used:

Audi V8 4.2 10 Bolt to O1E/O1A Gearbox | TTV Racing Component Flywheel & Clutch Manufacturers

paid around $500

Used an Audi B5 S4 pressure plate with a 987 Cayman S friction plate in to a 987 Cayman 6 speed box

Do you know if a Boxster pressure plate and clutch plate will work on that flywheel?

[specboxCO]

Originally Posted by truegearhead

Do you know if a Boxster pressure plate and clutch plate will work on that flywheel?

The Boxster friction plate will work. Not sure about the pressure plate. Looked kinda similar, but did not try it. Email the guys at TTV - they custom make them, so chances are they will make you one that fits the Porsche clutch if you send them the details.

[AaronF]

I used an AYS S8 engine with the TTV flywheel P/N 4646 and a B7 RS4 clutch/PP (LUK 02-050). I then worked with stuklr for the tuning side of things. He told me that he has several hours of dyno time with his setup plus he's pretty well known in the 2.7t communities for tuning. He worked wonders for my swap!

Member AaronF who posted above has the best info I've seen for the swap, here:
https://sites.google.com/view/boxsterv8swap/home

Thanks! I'm still trying to make it a better read.

[strombomb]

@AaronF - with your 2003, how did you handle the CEL status between the Boxster DME and the cluster? Do you have a constant check engine light or did you do some CAN manipulation?

I just picked up a 2003 986S with a blown motor and am eager to drop in a 2.7t, I’ve got a soft spot for those.

[AaronF]

Originally Posted by strombomb

@AaronF - with your 2003, how did you handle the CEL status between the Boxster DME and the cluster? Do you have a constant check engine light or did you do some CAN manipulation?

I just picked up a 2003 986S with a blown motor and am eager to drop in a 2.7t, I’ve got a soft spot for those.

I'm just dealing with the CEL. I'm sure there is some sort of CAN filter that can block the specific CEL setting messagses. I've got an Arduino with a CANbus shield but haven't had time to mess with it yet.

There are several people on our "Swapped Porsche" group on Facebook who could definitely help better than me with the 2.7t swap, Tom Prosser being one.

[Gilles]

Originally Posted by strombomb

I just picked up a 2003 986S with a blown motor and am eager to drop in a 2.7t, I’ve got a soft spot for those.

Strombomb, would you please document your progress on the engine swap? It would be a very interesting reading, thanks!
.

[strombomb]

AaronF - Thanks for the explanation. I am thinking CAN shielding/generation/manipulation is in my future. I just invested in a CAN-usb interface and can’t wait to dive in and do some logging... for the purpose of identifying what CAN data needs to be present for a good working system. Also, Tom is awesome. I’ve reached out to him already and his insights are invaluable.

Gilles - Yes I will start a thread after details have been worked out and I have content to share. I can’t wait!!

[strombomb]

Double post - delete

[strombomb]

Double post - delete

[1thenaton1]

strombomb - welcome! Please share your progress. I love the 2.7t and daily a b5 s4 but am going with a 4.2 for my boxster as it mostly sees track duty.

My plan running parallel ECUs is to monitor the Audi ECU via OBD2 bluetooth, to a phone and eventually an android tablet running Torque app. Lots of data, as i'm sure you know, available through that route and if the CEL is bothersome you can always just pull the bulb.

[strombomb]

Originally Posted by 1thenaton1

strombomb - welcome! Please share your progress. I love the 2.7t and daily a b5 s4 but am going with a 4.2 for my boxster as it mostly sees track duty.

Ooh yes, I miss my B5... it was several cars back, now, but I miss it. They are just classic. Definitely some body lines in that chassis that are subtle but timeless.

Are you saying the 4.2 is preferable for reliability or heat reasons making it better suited for a track car? Both my B5 and B6/2.7t suffered from heat soak but were fairly reliable (preventative maintenance and routine inspection it key)... so I partially agree. In this project, I expect intake heat management will again be a challenge... I will probably have to get creative with intercooling.

Are you still planning on the S6 motor? Have you dug into it yet?

[1thenaton1]

Originally Posted by strombomb

Are you saying the 4.2 is preferable for reliability or heat reasons making it better suited for a track car?

Both really. Running my 986 for 4 seasons at our track in Utah has shown me that simplicity is better and that most turbo cars struggle to run well for full sessions during the summer.
As far as heat, i've observed my B5 easily differs 100lb/ft depending on temperature. With the IAT sensor in the intake manifold, even good intercooling only goes so far as when the throttle body is closed it heats up very quickly in there. Still such a fun street motor though, and I won't close the door on putting one in another 986 in the future given the relative low cost of the components.

Originally Posted by strombomb

Are you still planning on the S6 motor? Have you dug into it yet?

I actually got an S8 motor and swapped to the a6/S6 mounts and am running a cradle that another member on this board made. I have a shop doing most of the heavy lifting and so far the engine and trans are mounted in the car (in and out several times) and waiting on finishing up exhaust, fuel lines, coolant routing, power steering, and wiring.

[Stroked & Blown]

Like this:
https://www.youtube.com/watch?v=8tx_EtTjjro

Can you make a bracket for the end of the Porsche cable and connect a linkage bar to the Audi TB?

[Qingdao]

If you are making a custom throttle cable attachment I just did some work to an early 00 Ford Escape. They use the same throttle cable end. Should someone need to make custom bracketry for their throttle cable you can use those drive by cable Ford V6 cables.

I just had to make a bracket for my car (although not a V8). It was JUST long enough to work. However, placement on the edelbrock's throttle had to be moved slightly inbound towards the center of movement. (I don't know how to describe what I did LOL)

[Quadcammer]

is titanium dave still making these cradles? I'm considering this but would need to plan ahead.

I'd likely use the ays engine if I could find one with dme and the s6 euro tune.

For people using this, were you able to delete any SAI, EGR, fuel vent valve stuff? My car is track only so I'd like to delete all this crap.

Then I'd use the stock dme to control the body/dash.

seems thats the most common route.

Also, is anyone concerned at how close that oil filter is to the exhaust manifold? No heat shielding?

Finally, how is the oil starvation with this motor?

thanks all.

[truegearhead]

Originally Posted by Quadcammer

is titanium dave still making these cradles? I'm considering this but would need to plan ahead.

I'd likely use the ays engine if I could find one with dme and the s6 euro tune.

For people using this, were you able to delete any SAI, EGR, fuel vent valve stuff? My car is track only so I'd like to delete all this crap.

Then I'd use the stock dme to control the body/dash.

seems thats the most common route.

Also, is anyone concerned at how close that oil filter is to the exhaust manifold? No heat shielding?

Finally, how is the oil starvation with this motor?

thanks all.

If you want an Audi ecu that has the immobilizer removed and the rear O2 sensors disabled let me know. I have one that I had made for my car but since I’m turbo’ing it I went stand alone.

Also I ditched the factory oil filter and cooler aetup and installed a remote filter and accusump. If you want to go this route I can show you what I did

[Quadcammer]

how are you mounting the engine? Do you have a workable cradle design?

Have you looked into oil starvation? I haven't seen many people tracking this engine so google hasn't told me much.

[truegearhead]

Originally Posted by Quadcammer

how are you mounting the engine? Do you have a workable cradle design?

Have you looked into oil starvation? I haven't seen many people tracking this engine so google hasn't told me much.

I do have an engine cradle that had a fabricator make up. It’s all bolted up and in the car. Seems like it’ll work. I didn’t modify the car at all (or at least not the bolt the engine up). I used the factory engine mount and location plus a cradle

I have looked into oil starvation and haven’t heard anyone mention that it a problem but who knows. The good news is these motors are cheap! There are quite a few racing abz’s out there and there’s no mention of it so I guess it’s safe?

[titaniumdave]

Originally Posted by truegearhead

I do have an engine cradle that had a fabricator make up. It’s all bolted up and in the car. Seems like it’ll work. I didn’t modify the car at all (or at least not the bolt the engine up). I used the factory engine mount and location plus a cradle

I have looked into oil starvation and haven’t heard anyone mention that it a problem but who knows. The good news is these motors are cheap! There are quite a few racing abz’s out there and there’s no mention of it so I guess it’s safe?

With the large oil capacity and the flat pan we don't think there will be any issues. I have tipped the engine so the oil pick up is even lower with my cradle, we will be running an Accsump in our racecar as a belt and suspenders approach.

[titaniumdave]

I have a few folks interested in getting cradles so I will be make another batch of them in early 2021. Please e-mail me if you want to buy one. Cost will be $980 for the complete kit like I have supplied in the past, this includes a bolt set, front stabilizer bracket and PS pulley delete spacer.

titaniumdave@msn.com