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850i BMW V12 Swap

Printed From: West Coast Fieros
Category: General Car Chat (Not Fiero Specific)
Forum Name: Car Talk thats not a Fiero
Forum Description: If your car is not a Fiero and you are not part of the PPPCC and you need to bring something up, this is the place for it.
URL: http://www.westcoastfieros.com/forum/forum_posts.asp?TID=1992
Printed Date: 29 April 2024 at 6:06am
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Topic: 850i BMW V12 Swap
Posted By: marcelvdgn
Subject: 850i BMW V12 Swap
Date Posted: 05 August 2010 at 1:32am

Some of you were interested in how i would overcome my unfortunate engine melt down on Saturday. (Broke the timing chain on the v12)

Well the donor car is going to serve a greater cause. so here are some shots of this evenings work. May not look like much, but these cars are engineered......way over engineered.

Up in the air (Parts car)

looks scary

love that intake

cooling system and rad out

 

exhaust out

drive shaft out

parts piling up fast

continuing Saturday and the forseeable future

 

 



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Marcel 86SE V6 Auto
85SE V6 Auto
85 2m4
soon to be sleeper 3.8sc 5 speed



Replies:
Posted By: marcelvdgn
Date Posted: 05 August 2010 at 1:33am
Ill use smaller pic format in the next addition

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Marcel 86SE V6 Auto
85SE V6 Auto
85 2m4
soon to be sleeper 3.8sc 5 speed


Posted By: Romeo
Date Posted: 05 August 2010 at 7:34am
You broke the amazing V12?

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Never shift into reverse without a back-up plan.


Posted By: Bassman
Date Posted: 05 August 2010 at 8:49am
Still have the stickers on the front left tire:)...everything seems BIG...lol

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Brian (Bassman)

86 GT Fastback 3.2L

2013 Mazda3 Sport GS SkyActive

[IMG]http://i170.photobucket.com/albums/u243/Bassman68/BassmanSignature.png">


Posted By: Fire451
Date Posted: 05 August 2010 at 5:25pm
actually I think that is the right rear tire...

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Posted By: Capt Fiero
Date Posted: 05 August 2010 at 6:13pm

Originally posted by Fire451 Fire451 wrote:

actually I think that is the right rear tire...

 

Yep the pic shows the IRS so that is the back.  Now as to those tires, although old, they look like some nice rubber. If I remember BMW right they are probably a 225 or 245 / 50 /16



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Capt Fiero
88 Fiero GT 5spd V6
Eight Fifty Seven GT V8 5spd.


Posted By: marcelvdgn
Date Posted: 06 August 2010 at 9:32am

fyi ... tire size stock is the 235/45/16 zr .

These are toyo proxes series.



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Marcel 86SE V6 Auto
85SE V6 Auto
85 2m4
soon to be sleeper 3.8sc 5 speed


Posted By: Capt Fiero
Date Posted: 06 August 2010 at 11:13pm
LOL, well at least I was closer than a hand grenade or a horseshoe had to be.

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Capt Fiero
88 Fiero GT 5spd V6
Eight Fifty Seven GT V8 5spd.


Posted By: marcelvdgn
Date Posted: 08 August 2010 at 10:22am

More pis to come today



-------------
Marcel 86SE V6 Auto
85SE V6 Auto
85 2m4
soon to be sleeper 3.8sc 5 speed


Posted By: Romeo
Date Posted: 08 August 2010 at 10:50pm
You just might be missing a 'c' in the sentence above mine there, Marcel. Keep the pics coming!

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Never shift into reverse without a back-up plan.


Posted By: marcelvdgn
Date Posted: 08 August 2010 at 11:12pm

thanks......too tired to spell or type......was a pis..y job though. and i have to do it all over again to get the dammaged engine out.

 

 



-------------
Marcel 86SE V6 Auto
85SE V6 Auto
85 2m4
soon to be sleeper 3.8sc 5 speed


Posted By: marcelvdgn
Date Posted: 09 August 2010 at 10:53pm

Had to put the donor cars front suspension back together so she could be rolled out of the bay.

 

My car rolled in with the newer motor patiently waiting in the background

can t believe I have to do this all over again. 10 hours of real work to get the donor motor out. Lets see if I am little quicker this time??



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Marcel 86SE V6 Auto
85SE V6 Auto
85 2m4
soon to be sleeper 3.8sc 5 speed


Posted By: Capt Fiero
Date Posted: 09 August 2010 at 11:19pm
So you want to grab a tape measure and measure from the front of the engine, at the pully and back to the bell housing?  Just curious how long that engine really is.

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Capt Fiero
88 Fiero GT 5spd V6
Eight Fifty Seven GT V8 5spd.


Posted By: Dr.Fiero
Date Posted: 10 August 2010 at 7:46am
Originally posted by marcelvdgn marcelvdgn wrote:

10 hours of real work to get the donor motor out. Lets see if I am little quicker this time??


Practice makes perfect!
Try not to make it a habit so you become and EXPERT though eh? 

And Dave -- it's not that big. it's only a 6cyl!  If you stand on one side.  Ha ha.



Posted By: Romeo
Date Posted: 10 August 2010 at 12:32pm
We need to rebuild it, and throw it in a Fiero. Would be pretty gnarley.

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Never shift into reverse without a back-up plan.


Posted By: Matt
Date Posted: 10 August 2010 at 2:24pm
I don't think you'd want to rebuilt it. A BMW v12 that snapped it's timing chain, would be a messy project. 

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I wanna go fast.


Posted By: Capt Fiero
Date Posted: 10 August 2010 at 3:42pm

I was just thinking off in way left field, the BMW V12 coupled to a TH425 so it would be a longitudinal swap, unfortunately have to lose the trunk, but I'd bet it would fit, and you could have a real V12 Fiero.  Only 2 catches would be getting an adapter plate made for the bell housing and getting the Fiero instruments to run on the BMW sensors, might have to add in a few extra bits to make it all play nice.  I wonder if the BMW computer has been hacked or not? 

This is not a project I would ever try, however I think with the right person and time it is feasible.



-------------
Capt Fiero
88 Fiero GT 5spd V6
Eight Fifty Seven GT V8 5spd.


Posted By: Dr.Fiero
Date Posted: 10 August 2010 at 5:30pm
I thought that years ago, some German (Dutch? other?) guy overseas was trying to do this.

I seem to even remember him posting pictures of his shop, and it was like 2ft wider than the Fiero! Brick building.



Posted By: marcelvdgn
Date Posted: 10 August 2010 at 6:36pm
i figured someone would go there .......especially after dave asked me for dimensions

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Marcel 86SE V6 Auto
85SE V6 Auto
85 2m4
soon to be sleeper 3.8sc 5 speed


Posted By: marcelvdgn
Date Posted: 08 September 2010 at 11:17pm

September 8 and I drove the transplanted v12 home tonight. This engine is smooooth. what a difference.

Anyway sorry i didnt post pics of the engine going in. I figured i spent about 38 hours pulling things apart and putting it back together.

I'll have to keep a watch during the shake down and no more redlining!

Taking the damaged engine apart (heads off) showed a broken timing chain, ten bent valves and eight piston heads indented. I'll continue the dismantle to see if anything is salvagable



-------------
Marcel 86SE V6 Auto
85SE V6 Auto
85 2m4
soon to be sleeper 3.8sc 5 speed



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