Porsche Boxster 986 - engine swap project
Discussion
This is a very interesting project, I love seeing how components from different cars are compatible.
A friend had an A6 2.7T, it was a beautiful car sounded ace with a full s/s exhaust but working on the engine in situ was a nightmare, on 100K miles there were oil leaks everywhere and the breather system was toast.
Are you planning to replace the timing chains thermostat and cam cover gaskets before fitting the motor?
A friend had an A6 2.7T, it was a beautiful car sounded ace with a full s/s exhaust but working on the engine in situ was a nightmare, on 100K miles there were oil leaks everywhere and the breather system was toast.
Are you planning to replace the timing chains thermostat and cam cover gaskets before fitting the motor?
Depending on which 2.7 version you've got, you might want to check the oil lines. I had a modded S4 Avant and the first version had the potential to starve the turbos of oil due to the lines being too narrow. A problem that was solved in the 2nd version.
TBH, my S4 never missed a beat, but I blinked first and sold it on - the cost to repair was extortionate/ruinous.
However, no doubt, you've already got that sorted
As a Porsche-owner, this is an EPIC build - can't wait to see the finished article
Well done so far
Dan
TBH, my S4 never missed a beat, but I blinked first and sold it on - the cost to repair was extortionate/ruinous.
However, no doubt, you've already got that sorted
As a Porsche-owner, this is an EPIC build - can't wait to see the finished article Well done so far
Dan
This weekend I started the exhaust. I also made a bracket to mount the turbo off the back of the transaxle. My original plan was to have the car looking completely standard but it's not going to be easy to keep the center exit exhaust if I want to run a silencer, which I do. To be honest, I think the center exit on a Boxster looks crap anyway, i'm considering cutting the center of bumper away like has been done on this MX5. I'd then have a silencer from the back of the turbo with the pipe exiting at the driver's side of the bumper Opinions on this idea are welcome.
I think the stock appearance has appeal, and I'm not super keen on the rear bumper cut away...
Could you keep the centre exit pipes as dummies and hide the real pipe exit somewhere else, like with a diesel turn down pipe hidden behind the bumper (without setting the bumper on fire!))?
Could you keep the centre exit pipes as dummies and hide the real pipe exit somewhere else, like with a diesel turn down pipe hidden behind the bumper (without setting the bumper on fire!))?
Thanks for the replies.
VerySideways said:
I think the stock appearance has appeal, and I'm not super keen on the rear bumper cut away...
Could you keep the centre exit pipes as dummies and hide the real pipe exit somewhere else, like with a diesel turn down pipe hidden behind the bumper (without setting the bumper on fire!))?
I hadn't actually thought of that. Fake exhausts are generally tragic but would be acceptable in this case. This seems like the best solution, think I might go this way. Could you keep the centre exit pipes as dummies and hide the real pipe exit somewhere else, like with a diesel turn down pipe hidden behind the bumper (without setting the bumper on fire!))?
chuntington101 said:
What's the reason for going single turbo over twins? I think it would be cool if you could see the turbos slightly beneath the bumper like some of the big turbo air cooled 911s.
I was in two minds which way to go regarding single turbo vs twins. In the US, everyone chasing big power goes single turbo on S4's as they perform better. Also, going single keeps the pipe work easier to fabricate. I test fitted the rear bumper and the compressor housing can still be seen poking out underneath.RB Will said:
Ace project. And being done with what looks like a Halfords tool kit, gives me hope for achieving something with mine lol
Thanks, my Halfords tool kit has had a hard life Escy said:
You might be surprised. The engine is already in with no modifications to the engine cover or the roof compartment.
Yup, I'm surprised! And impressed. Question: I think you said the turbo is mounted behind the transaxle. How does that pan out as regards distance between the turbo and the engine inlets? I can see that might help with cooling although think modern practice is generally to keep the distance as short as possible.
I made some good progress this weekend. I bought a load of exhaust parts and got started on the exhaust. I modified the exhaust manifolds with 90 degree bends (forgot to take pictures) and then made the downpipes. It was a bit of a challenge to fit two 2.25" pipes down one side of the car as space is limited, it took me a while working everything out. I'm happy with how it's turned out, especially considering all the cuts were made with 4.5" angle grinder so it was murder trying to get the angles right and the cuts straight so I had tight fits. I still need to add lambda bosses and the external wastegate pipe, then i'll heatwrap it. I think this section of the exhaust will prove to be the hardest fabrication of the whole build so I feel like it's all downhill now
Edited by Escy on Sunday 6th March 14:35
I picked up some 18" 997 Carrera alloys as they were really cheap. They are slightly wider 8" vs 7.5" at the front and 10" vs 9" at the rear but will require spacers to fit the rears so I might not be able to get much extra tyre width on them. I think the weight is about the same. Not sure which I prefer so i'm interested in opinions
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