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Old 06-11-2015, 04:06 PM   #1
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Building a 3.2L

Hi There!

I am a new owner of a 2002 base Boxster with 103,000 miles, but in great condition.
I am looking at building up a 3.2L Engine to replace the 2.7. The car is an automatic transmission - my question is: Does the donor Engine I am going to start with have to come from original Automatic Car? or does it not matter if it was a Manual transmission car? Are the blocks the same?

Thanks!
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Old 06-11-2015, 04:22 PM   #2
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build a v8!
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Old 06-11-2015, 04:44 PM   #3
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The engine itself, does not need to be an automatic. There are some peripheral items that you can swap, such as the wiring harness and the plumbing. Some minor vacuum hose changes. Flywheel will need to be from (or new for) a 3.2 automatic

There are other considerations regarding year for the sensors, DME/ECU, throttle, etc.

Read this yet?
Porsche Boxster Engine Conversion Project - 986 / 987 (1997-08) - Pelican Parts Technical Article

Buy the 101 projects book to get started.
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Old 06-11-2015, 06:23 PM   #4
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I would sell it and buy one with a 3.2l engine in it.
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Old 06-11-2015, 06:33 PM   #5
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3.8. Done.
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Old 06-11-2015, 07:30 PM   #6
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3.8. Done.
Even doing this I would start out with an S model. There is more to the S then just a 3.2l engine.
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Old 06-12-2015, 06:42 AM   #7
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Even doing this I would start out with an S model. There is more to the S then just a 3.2l engine.
Yes, the brakes and suspension are "better".

But I had more legal fun in my 2.5 than my 3.2.
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Old 06-12-2015, 08:00 AM   #8
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Or just build a 3.6/3.8/4.0/4.2 from your OEM 2.7 core

Yes, I can.
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Old 06-12-2015, 08:38 AM   #9
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Originally Posted by mikefocke View Post
Yes, the brakes and suspension are "better".

But I had more legal fun in my 2.5 than my 3.2.
Huh? You're not making any sense at all...
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Old 06-12-2015, 02:42 PM   #10
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Quote:
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Or just build a 3.6/3.8/4.0/4.2 from your OEM 2.7 core

Yes, I can.
What can you build from a 3.2?
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Old 06-12-2015, 03:48 PM   #11
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Well if you measure fun by how hard your right foot presses for how long and how you have to drive the car and not just get tugged along by a big displacement, then my 2.5 was more fun than my 3.2 even though, by measurements, the 3.2 was better.

My 3 prior roadsters were all less than 100HP (1.3, 1.6, 1.6) cars so my 2.5's 200HP felt more than adequate. I drove the Alfas/914 harder than any of my Boxsters.

The Spec Boxster race cars are only 2.5s, BTW.

Just a different way of looking at things.

Last edited by mikefocke; 06-12-2015 at 03:51 PM.
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Old 06-12-2015, 05:11 PM   #12
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Quote:
Originally Posted by 78F350 View Post
The engine itself, does not need to be an automatic. There are some peripheral items that you can swap, such as the wiring harness and the plumbing. Some minor vacuum hose changes. Flywheel will need to be from (or new for) a 3.2 automatic

There are other considerations regarding year for the sensors, DME/ECU, throttle, etc.

Read this yet?
Porsche Boxster Engine Conversion Project - 986 / 987 (1997-08) - Pelican Parts Technical Article

Buy the 101 projects book to get started.
Yes! I did pick up the book, just didn't get the chance to go thru it yet.
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Old 06-12-2015, 05:42 PM   #13
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Quote:
Originally Posted by mikefocke View Post
My 3 prior roadsters were all less than 100HP (1.3, 1.6, 1.6) cars so my 2.5's 200HP felt more than adequate.

I drove the Alfas/914 harder than any of my Boxsters.

.
Alfa's.. :-)
Care to elaborate..?

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Old 06-12-2015, 07:34 PM   #14
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Originally Posted by porsche9 View Post
what can you build from a 3.2?
3.5, 3.6, 3.8, 3.9, 4.0, 4.1...
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Old 06-13-2015, 02:50 AM   #15
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Quote:
Originally Posted by mikefocke View Post
Yes, the brakes and suspension are "better".

But I had more legal fun in my 2.5 than my 3.2.
We already know the S has better cooling too and according to Renegade Hybrids it has a better drivetrain.

https://youtu.be/P67OSN2DqAE?t=409
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Old 06-13-2015, 12:43 PM   #16
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Got married, had kids, drove to work in a series of just issued cars like the Plymouth Horizon, Nissan Sentra and such.

Once I had the kids mostly off the payroll and retirement money well in hand, then Boxsters ('99, '01S).
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Old 06-14-2015, 01:20 PM   #17
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Best thread in 3 years, somebody has to hijack it!
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Old 06-14-2015, 03:19 PM   #18
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Quote:
Originally Posted by Boxy_02 View Post
Hi There!

I am a new owner of a 2002 base Boxster with 103,000 miles, but in great condition.
I am looking at building up a 3.2L Engine to replace the 2.7. The car is an automatic transmission - my question is: Does the donor Engine I am going to start with have to come from original Automatic Car? or does it not matter if it was a Manual transmission car? Are the blocks the same?

Thanks!
The harness from your motor will work with a 3.2 motor just swap it.
The vacuum system tubing can be moved to the donor engine as well.
Any similar year 3.2 motor will swap into a 2.7 car.

I have a 3.2 block from a tip running in a 2.7 manual chassis. You can pick up front S brake calipers on Ebay for cheap and replace the rotor for about the same price as new non-S rotors and brakes. Rear brake let alone same pads S or non-S.

Good luck have fun.
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Old 06-14-2015, 05:00 PM   #19
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Jake - sent you a PM.
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Old 06-14-2015, 07:42 PM   #20
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I want to hear the reaction when he sees Jake's cost to make a 3.6...
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