G.T. Fieros

Greater Toronto Fieros
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 Post subject: My Northstar VW Golf.
PostPosted: Sat Aug 30, 2014 1:50 pm 
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Single again

Joined: Sun Nov 10, 2013 10:26 am
Posts: 309
Location: Kitchener, Ontario, Canada
Before my Fiero, I had a 1991 VW Golf. I drove it daily for a year then I bought my Jeep. While it was a good little car, it just didn't cut it for me. So, I decided to install a 4.6 litre Northstar V8 and Getrag transaxle. Yes, in the back! Mid-engine RWD Golf MK2.

Here's one picture of the driveline at the time.
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While I liked that particular set-up, something just wasn't right. I couldn't put my finger on it until one day, I cut up a Porsche 914. You know where this is going, don't you? Longitudinal V8 baby!


Last edited by Lunatic on Sun Oct 11, 2015 6:15 am, edited 1 time in total.

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PostPosted: Sun Aug 31, 2014 10:25 am 
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Fieronut

Joined: Wed Jan 16, 2013 6:56 pm
Posts: 864
Location: Toronto
:shock: don't know what I want to see more, the fiero build or this. 8-)


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PostPosted: Mon Sep 01, 2014 11:26 am 
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Guru

Joined: Fri Jan 18, 2013 11:24 am
Posts: 783
Location: Just North of the GTA, Ontario
x-thumpr-x wrote:
:shock: don't know what I want to see more, the fiero build or this. 8-)


YUP, very interesting!


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PostPosted: Sun Mar 01, 2015 6:39 am 
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Single again

Joined: Sun Nov 10, 2013 10:26 am
Posts: 309
Location: Kitchener, Ontario, Canada
Note: While the Fiero is my top priority, this project will still be ongoing in respect to R&D, machining, etc.

For the record, the Porsche 914 already has a longitudinal driveline configuration. Having the engine in front and the trans behind. Therefore, there is no need to flip the transaxle.
Here's a couple of pics of the 40 year old trans. While it is operational, it's going to used as my mock up trans for now. I'll bead blast and rebuild it in time so don't mind the grime.
Note: This isn't going to be a drag car. Guys have been using this trans in the 914's behind V8's for years.
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PostPosted: Sun Oct 11, 2015 7:03 am 
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Single again

Joined: Sun Nov 10, 2013 10:26 am
Posts: 309
Location: Kitchener, Ontario, Canada
Having drawn up a model, it was then cut on the laser. I used 1/8" aluminum for this as it's plentiful at work.
This one was cleaned up as my initial plate was just to make sure the holes were correct.
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Once I confirmed the fitment, I committed to a piece of 3/4" 6061 aluminum and cut it on the water jet.
It needs a little machining to finish it off.
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Here it is after machining. Yes, it fit into the lathe. Just fit that is.
In this stage, there was a register cut into the aluminum. This aids in centering the trans to the engine since the 901 doesn't use locating dowels.
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On the back side, two holes needed to be counter bored for the dowels on the Northstar.
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I chose to tap these holes to 7/16-14 as the fit matched the hole diameter perfectly.
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As you can see in this photo, the initial template, the revised version, and the final product.
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The back of the engine that I will be using for mock up purposes.
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Here, the 1/8" template was set on the block in the trial stage.
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Then the real 3/4" adapter plate was fitted.
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Of course I need to check run out with a dial indicator. I bolted it to the crankshaft flange and checked it over through 360°. I had .007" of "total indicated run out". Divide by 2 and I have .0035". This is well within the given range.
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I decided to bolt the huge Northstar water log into place. But I needed to remove an offending area from the water log.
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After a few seconds with a grinder, the cast boss is now removed.
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Here's the front of the 901 trans.
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Same shot but with the adapter plate in place.
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I'm stopping at this point. There is interference between the water log and starter area on the bellhousing. I'll massage this with a grinder and report back when it's done.


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PostPosted: Mon Oct 12, 2015 2:47 pm 
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Single again

Joined: Sun Nov 10, 2013 10:26 am
Posts: 309
Location: Kitchener, Ontario, Canada
Okay, here's my adapter on the 93 block.
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Porsche trans bolted in place on the 93 block.
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Here's the gen 2 Northstar (00-02)
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Other then the waterlog, the back of the block is the same as the 93-99.
My adapter fits this Northstar family too.
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Perfect clearance, like it was meant to be. My measurements work.
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There is an interference between the waterlog and starter area as seen.
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No problem, quick work with the die grinder and I have the clearance I need.
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Just to double check, I used a mirror to check the backside. It's good here too.
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Fully bolted together.
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Man, this Northstar dwarfs the little Porsche transaxle.
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PostPosted: Sun Oct 30, 2016 6:48 am 
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Single again

Joined: Sun Nov 10, 2013 10:26 am
Posts: 309
Location: Kitchener, Ontario, Canada
In my travels, I spotted another MK2 Golf sitting behind a shop. Of course my curiosity had the best of me and I just had to make an inquiry. What do you know, the car followed me home. It has a few good things going for it. Like, brand new RS2 coilovers, new cross drilled rotors, new brakes, Corrado K frame, 5x100 bolt pattern, and the best feature, it's an 87. No emission test for me, thank you very much. I will use this shell and start working on this cool conversion in 2017.
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PostPosted: Sun Oct 30, 2016 7:27 am 
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Guru

Joined: Fri Jan 18, 2013 11:24 am
Posts: 783
Location: Just North of the GTA, Ontario
Wowm gonna be quit a sleeper. Just curious what does & will it weigh?


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