Mk2 RWD 1.8T

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mk2daz
Posts:113
Joined:Thu Dec 29, 2016 4:39 pm
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Re: Mk2 RWD 1.8T

Post by mk2daz » Mon Oct 04, 2021 4:28 pm

Started to build up the floor again in the middle portion of the car to regain some strength and also in order to suspend the gearbox under its own weight.

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Bolted up some porsche 924 discs up the front so i could get some 4x108 wheels on for now and was able to drop the car on the ground again for the first time in a while. Also chucked the front end on!

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Rolling with a full RWD drivetrain (minus the propshaft!)

The rear sits pretty nice and has plenty of adjustment in the suspension arms but the front requires some fairly heavy camber adjustments, will poke a bit more with some proper brakes etc fitted but i'm gonna need to look into extending the wishbones and/or modifying the strut top with some adjustable top mounts i think.


Here is youtube episode 2

https://www.youtube.com/watch?v=p4hHInvlaG0



RussGLAuto
Posts:182
Joined:Sat Jul 14, 2018 11:51 pm
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Location:Spalding

Re: Mk2 RWD 1.8T

Post by RussGLAuto » Mon Oct 04, 2021 6:17 pm

Epic mate! Well done...


Daily Driver - 2017 Volvo XC90 T8 Twin Engine - Polestar - Arctic White
Weekend Wagon - 50k 1982 Mk2 Scirocco 1.6 GL Auto - Diamond Silver
Other Half's Wagon - 2008 Mazda 2 1.5 Sport - Cosmos Blue
Daughters Curb Scraper - 2016 Fiat 500 1.2 - White

mk2daz
Posts:113
Joined:Thu Dec 29, 2016 4:39 pm
fill in the right answer:15

Re: Mk2 RWD 1.8T

Post by mk2daz » Mon Nov 15, 2021 5:40 pm

Long delayed update!

Measured up for a custom propshaft and had BAR propshafts in wales make it up for me, great turnaround, 2.5" heavy duty tubing, genuine spicer HD rally UJ's, balanced and ready to go

Fits superb - now officially rolling with a full RWD drivetrain!

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Got my bucket seat rails mounted and fully welded in, total total c**t to do, seats needed to be exactly right as i only have a couple mm clearance to the cage and tunnel, not the easiest to access to weld either, so im chuffed these are done.


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Picked up some 4 pin hitachi coilpacks so when I come to make up the loom I can delete the ignition amplifier which tends to be the weak point of the AGU ignition system.

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Before when the car was running FWD i was using a BAM inlet manifold and fuel rail with brand new EV14 bosch 550cc injectors, with the car being RWD now i need to use the AGU inlet manifold which isn't suitable for EV14 injectors, luckily creation motorsports make these little injector spacers and adapters so that I can run my Bosch 550s on the AGU big port mani. Looks like there shouldn't be any issues but will have to wait and see.

So now running 4 bar FPR, 550cc injectors and tig welded rail for AN fittings, should be plenty for fuelling everything the KO4-064 demands!

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Turbo oil feed line from a longitudinal 1.8T is a good fit, and I've started to tack together a downpipe, going to try and make the exhaust myself, 3" from turbo all the way back.

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Its going to be tight as hell but its do-able for sure.

Will run alongside the gearbox then dip under the propshaft all the way to the back of the car.

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Theres currently a b6 1.8t solid mass flywheel on the engine, in order to get the thing started up initially and check i have drive to the rear wheels i will use a b6 1.8t pressure plate and an old ford pinto friction disc as the rx8 input shaft is identical to that of the pinto/type 9 gearbox input shaft, the b6 1.8t stuff is only 228mm so what i have done is bought an audi 80 solid flywheel, these can be machined out to take a 240mm setup. I've been in touch with CG motorsports to have a custom clutch kit made up to handle all the power and torque i can throw at it, but this will come later on. Just want to hear it running and check i have drive for now.

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Been making up some little temporary wishbone extension plates to sort out the front camber situation, this is only to determine how much wishbone extension is required, i wont be running these plates all the time.

I still need to cut the arches on the wings too as they rub as it is

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Cut up my sump in order to modify it for my engine being vertically mounted, got rid of the oil level sensor hole too.

Made up this plate from 3mm alloy plate and will have an M14 bung welded in too for the drain plug. Will keep the original drain plug there too and just run two magnetic plugs. twice as more likely to pick up any shit in the oil that way!

Also have a spare rocker cover from a B6 1.8t, these do not have the breather on the end so i have drilled and relocated the breather to suit my needs and make things more accessible, will have this AN-12 fitting welded on for the catch can piping.

Lastly the oil pickup pipe will also be welded to accommodate for the vertically mounted engine, similar to the sump, it is currently 15 degrees out.

My TIG skills are not quite there yet so I think I'll have someone else do this!

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Finally, rolled it outside to blow some dust off it and to get a pic alongside the daily hack

Two mk2 scirocco AGU 1.8Ts, but at the same time two very different cars! haha


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Heres a link to the latest video

https://youtu.be/m6OZy3h2L9Q

Any subs/likes etc appreciated

Thanks for reading :)