*Engine Swap* 2004 SE BP-4W into 2001 NB8B

Engines, Transmissions & Final Drive questions and answers

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AlexHaley1994
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*Engine Swap* 2004 SE BP-4W into 2001 NB8B

Postby AlexHaley1994 » Fri Nov 27, 2015 4:12 pm

Hi,

I recently purchased a turbocharged BP-4W which was removed from a written-off 2004 SE.
I plan on removing the current BP engine in my NB8B and swapping it with the BP-4W.
I have the wiring loom, ECU, exhaust, intercooler, manifold, and other associated parts from the SE.
I'll be replacing the engine mounts during the swap. My NB8B has the 6-speed box, so no worries about it not handling the power.

I'll be conducting the swap over Christmas.

Is there anything I should be aware of before I begin? Has anyone done this swap or one similar before?

Mr Morlock
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Re: *Engine Swap* 2004 SE BP-4W into 2001 NB8B

Postby Mr Morlock » Fri Nov 27, 2015 5:39 pm

"Is there anything I should be aware of" - what you might want to check is legality and insurance.

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Lokiel
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Re: *Engine Swap* 2004 SE BP-4W into 2001 NB8B

Postby Lokiel » Fri Nov 27, 2015 6:20 pm

timk did exactly this swap on the car he just sold.
Do a search for his build thread to see what's needed.
Don't worry about dying, worry about not living!
Garage Thread: http://www.mx5cartalk.com/forum/viewtopic.php?f=57&t=76716

cookie
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Re: *Engine Swap* 2004 SE BP-4W into 2001 NB8B

Postby cookie » Fri Nov 27, 2015 9:13 pm

Being new and annoying you'll need the key / immobilizer I'd imagine.

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lightyear
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Re: *Engine Swap* 2004 SE BP-4W into 2001 NB8B

Postby lightyear » Fri Nov 27, 2015 10:20 pm

Why swap motors? The NB8B accepts the SE turbo and manifold. Has more compression, and seems to make more power than the SE motor. Unless your motor is shagged, I would just swap manifolds. Buy an MS3, and an EBay inter cooler. Look at my thread SE replica.
NA8B - P.I 1:50.1 Wntn1:38.0 Sand1:27.6 Wntn S1:08 Bfrd1:06.9 Cldr1:08.5 Wak1:10.4
"SE" - P.I 1:43.8 Wntn1:32.9 Sand1:22.0 Bfrd1:05.3

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Lokiel
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Re: *Engine Swap* 2004 SE BP-4W into 2001 NB8B

Postby Lokiel » Sat Nov 28, 2015 9:32 am

lightyear wrote:Why swap motors? The NB8B accepts the SE turbo and manifold. Has more compression, and seems to make more power than the SE motor. Unless your motor is shagged, I would just swap manifolds. Buy an MS3, and an EBay inter cooler. Look at my thread SE replica.

It's easier to get a RWC on a modded car with a turbocharger if the original engine came fitted with a turbo - that's one reason to do this.
Don't worry about dying, worry about not living!
Garage Thread: http://www.mx5cartalk.com/forum/viewtopic.php?f=57&t=76716

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Re: *Engine Swap* 2004 SE BP-4W into 2001 NB8B

Postby cookie » Sat Nov 28, 2015 10:28 am

Aside from a $100 mod plate the rwc is actually easier with the standard engine and la3 code clearly visible. Things to consider are oil drain on an se is standard etc.

project.r.racing
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Re: *Engine Swap* 2004 SE BP-4W into 2001 NB8B

Postby project.r.racing » Sat Nov 28, 2015 12:01 pm

Lokiel wrote:
lightyear wrote:Why swap motors? The NB8B accepts the SE turbo and manifold. Has more compression, and seems to make more power than the SE motor. Unless your motor is shagged, I would just swap manifolds. Buy an MS3, and an EBay inter cooler. Look at my thread SE replica.

It's easier to get a RWC on a modded car with a turbocharger if the original engine came fitted with a turbo - that's one reason to do this.
Except in this case both the engine numbers are related, so that issue wont arise.

AlexHaley1994
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Re: *Engine Swap* 2004 SE BP-4W into 2001 NB8B

Postby AlexHaley1994 » Sun Nov 29, 2015 10:04 pm

Thanks for the advice guys :)


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