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'81 Scirocco Mid-Engine 24V VR6 AWD PHEV
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Discussion Starter #1 (Edited)
I've been working on the designs for this project for a while now, so I figure it might be time to release some info. The car is an 81 Forest Green Metallic (non-S) that originally had beige interior. I swapped in a black interior, 16V, quaiffe diff, koni yellows, megasquirt, and eventually ITBs. Some may remember the car from the engine change it received in the parking lot at waterfest a few years ago.
Anyways, I've been only slightly in the VW world for the last few years due to the my management of a formula SAE team at the university. Learned lots and ended up designing a wicked 500lbs 4wd(mit Haldex) GSXR600 powered single seater. 0-60 in about 3.1 seconds.

but after a run with that, I missed my scirocco. having toasted the 16V, i thought about turbo 16V, or even better would be a 1.8T. But they all lack the fun factor when front wheels start spinning. Lo and behold, a VR6 pops into the equation. Having studied vehicle dynamics, I know that it certainly does not belong in the front of a mk1. However, with most of the weight ahead of the axle line, it could make for a nice mid engine car. Of course, the bias will be to the rear, but not as severe.
So this is the car:

And this is the engine:

The transmission:

This is where it will go:


I am currently working at the university now, so I have access to lots of software and tools. I've been modelling parts in UGS NX4.0 either directly or by taking CMM measurements into Rhinocerous3D and importing the wireframe. I'm using SuspProg3D to design the suspension kinematics.
The engine is a VR6 from a 93 passat. I tore it down, except for the pistons and crank, and removed the ring ridge. It was an automatic and would likely have shifted at a low rpm and the ridge was pretty bad. I'm planning on a proper rebuild over the winter, so the head won't see any work either. Aquired the following parts:
- complete timing chain kit
- metal head gasket
- all new seals
- new head bolts
- new crack pipe
- lightened the flywheel
- unorthodox pulley clones (crank and alt pulley)
- 268 Cat cams
The exhaust will be a proper dual setup with an x-pipe muffer. Not much lenthwise, but something sideways under the rear floorpan should work.
The transmission is an ACN with a 5th gear conversion. It was pulled apart when I got it, and I'm waiting for the peloquin diff I've ordered to arrive before I start reassembling it. It should be here today or tomorrow. It was on back-order for the last month!
The plan is to use the Passat VR6 subframe front and rear. The front subframe ends up fairly close to the rear trailing arm mounts, which should be good for rigidity. I'm putting alot of work in the design phase to reduce the amount of rear floor pan I have to cut out to maintain chassis stiffness. I'll add a roll bar and braces as well which makes a convenient location to mount the firewall.
For the back hubs/brakes I'll use:passat 16V spindles, diesel passat 10.1 solid rotors, Wilwood Dynalite Calipers, Hawk pads. I'll have to make an adapter for the spindle to mount an upper ball joint to a custom upper A-arm. The lower a-arm will be Passat VR6 but sectioned to the right length for now. In the future i'll probably upgrade to the H2Sports spherical bearing in a custom lower A-arm. The axles will be Scirocco 16V, which will add 1.2" to the rear track. My wheels were tucked under too far anyways, since I have the Zender wheel flares.

Shifting is another issue, and I may resort to some of the pneumatic components we used on the FSAE car to make a flappy-paddle gearbox.
Here are some pics of the design process:


 

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Re: Mid VR6 MKI Scirocco (BennyB)


If this is the VR6 shown in the rear of the mk1, then isn't the engine backwards?
5 Reverse gears?????

Looks like you know what you're doing, so I'll shut up. Grreat looking CAD btw http://****************.com/smile/emthup.gif
 

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Re: Mid VR6 MKI Scirocco (Throttlepimp)

Quote, originally posted by Throttlepimp »
That is Baaaaad Assssss.

hey.. smell my finger

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a VRsix Mk1?? daaaaaaaaamn!! do it!! doitdoitdoitdoitdoit
 

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Re: Mid VR6 MKI Scirocco (eight-zero scirocco)

Quote, originally posted by eight-zero scirocco »

hey.. smell my finger

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a VRsix Mk1?? daaaaaaaaamn!! do it!! doitdoitdoitdoitdoit

IHNLOLSHAAPIML
I have never laughed out loud so hard at a post in my life.
 

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Re: Mid VR6 MKI Scirocco (polov8)

Quote, originally posted by polov8 »


If this is the VR6 shown in the rear of the mk1, then isn't the engine backwards?
5 Reverse gears?????

Looks like you know what you're doing, so I'll shut up. Grreat looking CAD btw http://****************.com/smile/emthup.gif


Thats bitchin' NX4? that the name of that?
I'm gonna have to get a copy of it me thinks.
-Rob
 

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Re: Mid VR6 MKI Scirocco (MK1Scirocco1980)

I just realised the rear struts on a Scirocco point forward at the top so ignore my stupid question, I'll try and be awake when posting in future
 

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'81 Scirocco Mid-Engine 24V VR6 AWD PHEV
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Discussion Starter #12
Re: (G-rocco)

Quote, originally posted by G-rocco »
Only thing is... it needs to be an .:R32 motor... <evil grin>

actually... the plan is to eventually go bi-turbo with a pair of K03s for a quick spool up.
 

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Re: (BennyB)

Quote, originally posted by BennyB »

actually... the plan is to eventually go bi-turbo with a pair of K03s for a quick spool up.

Whoa.
 

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Re: Mid VR6 MKI Scirocco (BennyB)

sweeet!!!!!! I've always dreamed about doing the same thing!! (...and have designed the engine setup for the 2006 U of A FSAE team... 500cc kawasaki 500R turbo, watch out!!). Progress looks awsome so far!! keep the pics rollin.
 

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'81 Scirocco Mid-Engine 24V VR6 AWD PHEV
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Discussion Starter #16 (Edited)
Better View

This might give a better indication of layout. I'm familiar with all the parts and its sometimes even confusing to me.
 

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Re: Better View (kenny_blankenship)

There is a thread in the MkIII forum here on the vortex where a company Wentworth (i think) is doing a MR VR6 MkIII. They have posted pictures for nearly all the steps- if you could use any of the info its still an active thread... check it out mang!
awesome idea, BTW http://****************.com/smile/emthup.gif
 

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'81 Scirocco Mid-Engine 24V VR6 AWD PHEV
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Discussion Starter #20
Re: Better View (Sciroccist)

Quote, originally posted by Sciroccist »
There is a thread in the MkIII forum here on the vortex where a company Wentworth (i think) is doing a MR VR6 MkIII. They have posted pictures for nearly all the steps- if you could use any of the info its still an active thread... check it out mang!
awesome idea, BTW http://****************.com/smile/emthup.gif

holy crap! 2200 posts. that was alot to sift through.
13" brakes in the rear?
no wonder he had to buy proportioning valves. According to my calcs there will be 65% front brake bias required, and thats with a rough guess of 40/60 weight split.
Alot of other good ideas though.
 
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