G50 coupled to a type 4 engine

[Wally]

Has anybody ever tried this?
I'am not talking about space constraints in the car due to the larger G50, nor any suby engine mated to this tranny.
Just what has been done to mate the aircooeld type 4 engine to the (early) G50 '87-'89 tranny ?

I cound only find one oval beetle in GB with a turbo type 4 , but not much on what clutch, pp and fly he used.

Thx,
Walter

[Sandeep]

Wally,

What are you planning ?

Are you refering to Mark Thurston's oval ? I have that issue of volksworld but no info other that a 2466 T4 turbo with G50 gearbox.

Sandeep

[Wally]

Originally Posted by Sandeep

Wally,

What are you planning ?

When I know myself, I'll tell you

Are you refering to Mark Thurston's oval ? I have that issue of volksworld but no info other that a 2466 T4 turbo with G50 gearbox.

Sandeep

Yes, Mark Thurston's oval indeed. Thanks for informing me about the content not pointing out the details of the mating! Saves me from complicated search for a copy..

Its just that I located one quite 'cheaply' and noticed a few things of interest about them. Its all good, except for the weight...My mag 915 weighs 45 kg; the 87-89 G50 (including the stock - looks like a bug@5speed bar - front alu mounting bar) weighs 68kg on my scale. A mag 412 box was 35kg. I suspect a bug box is about 25-30 kg...

My 412 already has an hydraulic clutch system at about the same place

[ricola]

There are a few more details on his club website: http://www.lbc2.com

1956 - type 1 oval – mark thurston (aka fluff walker)


engine \ ignition \ transmission

type 4 2466cc (74x103)
2.0 litre conrods – balanced and checked for straightness - with raceware bolts
74mm counterweighted crank
103mm j&e barrels & pistons
berg 3/8” chromoly pushrods
european racing reworked heads with siamese valve seats, welded & ported
raceware aircraft spec case bolts and head studs
webcam turbo grind cam
remelle bolt on rocker covers (o-ringed)
dta fuel injection management with jenvey throttle bodies
garratt t 3-5 turbo with stainless header
race products water charge cooler
erl water-alcohol injection
taylor machine billet deep sump
13 row mocal oil cooler (for interior heat)
19 row mocal oil cooler and 9” pacet electric fan
porsche 3.2 carrera (911) g50 5-speed gearbox (good for 600bhp)
uprated irs driveshafts and cv joints
hydraulic operated 3500lb clutch and one-off flywheel
thurston fabricated gear shifter and linkage

wheels \ suspension \ brakes
porsche 7x17” turbo 4 cup alloys with yokohama a520 tyres
framehead raised 20mm
cb dropped spindles
front beam fitted with sway-away adjusters and narrowed 40mm
front porsche 944 aluminium hubs and vented discs (11”) with brembo 4-pot calipers
22mm front anti-roll bar
rear sway-away 25mm torsion bars
porsche 944 height adjustable training arms
rear porsche 944 discs (11”) with 4-pot aluminium calipers
18mm anti-roll bar
linelock

body \ interior
special mix paint based on polar silver
autometer street tach
autometer oil temp, oil pressure, boost guages
simpson 4 point race harnesses
porsche 911 front seats
interior trimmed in green leather (tony archer)

[Wally]

hydraulic operated 3500lb clutch and one-off flywheel
(thurston fabricated gear shifter and linkage)

The above are the things of interest. Did he use a 240mm (stock) size disk?
Ring gear on the pp like 915 or on flywheel...that sort of things
I would shorten the bell housing like some porsche owners do that transplant these into pre-87 911's... since the pinion shaft is rather short, you'd think the shaft should be kept the length it has (unlike the porsche conversion of i.e. patrick motorsports).
Then you'd have to fabricate really s/ th custom, but...the box is then not longer than a 915...and THAT already fits without cutting torsion tubes in my 1303...
See the point I am getting at?

Still, its 20 kilos heavier and the 915 won't break either...better put a high quality LSD in that and be done with it

[Wally]

Just asked KEP: they make a 228mm (9") disk with G50 spline pattern for about $ 180,--