Engine swap thoughts

[jarrodblake]

Anyone have any detailed info on the audi 4.2 v8 swap. I have found a few threads on the swap but not any that go into detail. I know it will bolt up to the trans, but cant find what clutch/ flywheel set up.? Is the auto engine the same as the manual, can I just reflash/ tune the ECU. Did any of the timing belt engine use a Map sensor or did they all use Mass air flow sensors? Anyone know the best year timing belt engine is to get? or anyone know of a year list/ modle list for the timing belt engines? I'm having really bad thoughts about runing a audi 4.2 with individual throttle bodys. Cutting away the engine cover and having an open bay with a fire wall kinda like old 993 mid-engine FABCAR. Walking up to the car peeking into the back of and a V8 with ITBS sitting back there.





Can you imagine this with ITBS



That said I'm still on the fence about doing the swap. I know it has been done I just cant find any info on pluming then engine and the wiring side of the swap. Ideally I would like to buy an engine with a full harness. But I cant find anything on compatibility when It come to doing the two harness or what ECU. or if I should build a standalone harness for a standalone ECU or even which one to use?


Also I have been thinking about posting my engine up on CL, Kinda as a feeler stating the engine is still in the car, but don't know what to ask, any thoughts?

[woodsman]

Whew your a man of action! Wow. I'm tired after looking at it for 5 min. So much work but hey you have a dream and the ambition to do it. Not to mention the cajones. Can't answer any of your questions but I'm pull'in for ya. And I think a V8 would be perfect!

[itsnotanova]

I've been surfing Audizine a lot lately researching the audi engines and transmission for my swap. Another good site is 034motorsports.com because they sell a lot of aftermarket parts for audi's. When it comes to the wiring, you can either buy an aftermarket stand alone system or use the stock wiring system from the donor vehicle. From what I understand, Audi wiring systems are easy to separate the engine harness and useful wiring from the unneeded wiring. I can't answer what 4.2 engines are best because I'm going with the 2.7T but I believe both engine share the same bell housing bolt pattern and flywheel/clutch. This is strictly my opinion and haven't been able to verify yet. I believe you'll need to use an Audi flywheel and clutch no matter what. I don't think the Audi starter reaches far enough to engage the teeth on a Porsche flywheel. Both Audi 2.7T/4.2 and Porsche M96 motors have the pilot bushing in the flywheel. I'm not sure if the transmission shaft is the same distance to reach into the pilot bushing though. From what I can also tell, the 5 speed Porsche tranny should bolt up to the audi without any modifications. The 6 speed from a 2000-2004 will need to be modified for the starter. Starting in 2005, the Porsche 6 speed has the same transmission bolt pattern as the 5 speed. I will be answering these questions for myself at some point. My plan is to buy a 2.7T engine soon and see how well it fits in my chassis with the Porsche 6 speed. I don't think it will fit, so I'll probably end up going with the Audi 01E 6 speed trans.

What's the story with this picture and where did you find it?

Originally Posted by jarrodblake

[itsnotanova]

On my post with the pictures of the 2.7T and the 6 speed together there shows a gap between the two. The guy who was letting me test fit my tans to his 2.7t had forgotten that there was a factory spacer on the AUdi motor. That spacer fills the gap and a 6 speed should bolt up snug with no problem.