930 4speed conversions

I know that 1303Steve is doing one, how about some info
and experiences from anyone....you too Stevey!

Hi

Im going G50 now, just went and bought some alloy 944 traling arms. These will move the Cv location on the axle out further which will be a help to me, Im moving my trans forward about 100 mm and the longer axles will cut down the angle on the CVs. I will post pics as things happen. After looking into buying better ratios for the 930 box the G50 was a better option in my case.

Steve

Thanks Steve,
that tranny looks to be of similar length to the 930, only
it has five speeds. Are you keeping the stock ratios?
Which engine combo are you bolting to it?
The 930 ratios that I have are even too tall for my blown combo
but now that I plan to run N/A I hope to change them to
Albins Dog ring:3.44,2.23,1.6,1.22 with the 4.222 diff ratio.
How is that 0.625 standard top gear....man that's tall!

Hi Dave

I was talking to Ivan Albins, what I nice guy and he said that 3rd can be fitted into the 4th gear location, but it was still a lot of money. Im going to the dark side and fitting a 2003 STI motor.

Im going to stick with stock ratios,

G50 ratios kph
25.315 trye 3.44 final drive
3.5 2.058 1.409 1.074 .861
1800 18.12 30.84 45.04 59.10 73.72
2000 20.15 34.26 50.05 65.67 81.91
2200 22.16 37.69 55.06 72.22 90.09
2400 24.18 41.11 60.06 78.79 98.29
2600 26.19 44.54 65.06 53.02 106.48
2800 28.20 47.97 70.06 91.93 114.68
3000 30.21 51.40 75.07 98.49 122.85
3200 32.23 54.83 80.08 105.06 131.04
3400 34.26 59.42 85.08 111.63 139.24
3600 36.27 61.67 90.09 118.19 147.44
3800 38.28 65.10 96.11 124.75 155.62
4000 40.29 68.53 100.10 131.32 163.81
4200 42.31 71.96 105.11 137.89 172.01
4400 44.32 75.39 110.10 144.46 180.20
4600 46.35 78.80 115.11 151.03 188.38
4800 48.36 82.23 120.12 157.60 196.42
5000 50.37 85.66 125.12 164.15 204.77
5200 51.52 89.04 130.13 170.72 212.97
5400 54.40 92.52 135.14 177.29 221.14
5600 56.41 95.95 140.15 183.86 229.34
5800 58.42 99.38 145.15 190.43 237.53
6000 60.45 102.79 150.16 196.99 245.73KPH

Stock 50 92 148 201

Dave, how do you find the 930 box in your car?

Steve, haven't completed the conversion yet...still running the bus box.
I heard the 930 synchros are a problem so will most likely go with the dog rings.
It may be related to the clutch disc weight they use standard.
I will only get one shot at picking the ratios, so will experiment with the bus box until I am happy.
Oh yeah, I love my Volksys, but I think it is cool to transplant anything into one. Hell I even like cars that have curves that remind me of Volksies...yeah sick I know!
Do you still have MY 46IDAs under your bed? Regards, DB.

Hi Dave,..is ther a reason for a 4speed instead of 5.?orjust better for drag racing?Hows the car shaping up?JVLRacing

Hi Dave

The IDAs were sold to Jurgo, then they got sold on Ebay to a guy in the US for a motsa.

This is the reason to use a 4 speed 930 box, http://www.mechtech-ms.com/html/sswinter.html

Steve

Thanks Steve.
Hi jvi054 (John is it?). Yes a 5 speed is ultimately better to minimize rev drop through the gears.
The original reason though was for the strength, since the 930 is stronger
than any other Porsche deal and had a diff ratio that suited my Blown combo.
Now that my focus is normally aspirated, and I have a 930 tranny, I like the
Albins dog rings and he can make any ratios....although they are a little pricey,
(but still damn good value!) so I must make sure that my selection of ratios
is correct.

dangerous wrote:Thanks Steve.
Hi jvi054 (John is it?). Yes a 5 speed is ultimately better to minimize rev drop through the gears.
The original reason though was for the strength, since the 930 is stronger
than any other Porsche deal and had a diff ratio that suited my Blown combo.
Now that my focus is normally aspirated, and I have a 930 tranny, I like the
Albins dog rings and he can make any ratios....although they are a little pricey,
(but still damn good value!) so I must make sure that my selection of ratios
is correct.

Hi Dave,its been a long time,:PSo you think deffently the strenght of this box needs to be looked at?JVLRacing

Hi John

Did you read the link I put in previous post?

Steve

Thanks for the pic Steve, has answered a lot of my questions about the 5 speed box questions for my T3 Ghia.
Is there an issue with lining up the shift rod on a VW pan? I have an Type 3 IRS rear end. Are the issues the same?

PS, if you arent going to use the throttle bell crank on the side of the box, can I buy it off you?nn[ Edited on 14-8-2005 by Grey 57 ]

1303Steve wrote:Hi John

Did you read the link I put in previous post?

Steve

Steve,Just read the link!!!mate very interesting.I cant believe i spent all this money on the box i have.I musted been blind....Sorry ididnt read the link earlier.Thanks Steve:thumb...JVLRacing

Hi Dean

No worries, I dont need the bell crank, are you coming to Sydney again soon.

Steve

Hey Steve, no trips planned to Sydney anytime soon unfortunatly mate. I will U2U you for the details.

I just read that article too. Is the 5 speed Porsche box the same lenght and style? Been thinking about either taller R & P for VW box (Exy from CBB (?) in Euros) or change to 5 speed Porsche.

So Steve are you going 5 speed or 4 speed?

Hi Dean

I will send that linkage down to you. Im going 5 speed, thats my box in the photo.

Steve

Excellent gearbox Steve.............always better to research before going down the wrong path😵‍💫

Cheers Steve, much appreciated. Shout you a few beers when I do get to Sydney next:thumb

John,
I think the tranny you chose was the right one at the time.
The 930 would be over kill for your application and very heavy.
Also with a limited slip and all the right gears you will probably spend over $12000
The cores are about $3000, gears with dog rings are about $5000 and assembly labour and limited slip are unknown....all this plus GST!
The G50 like Steve has may be an option but I dont know much about their strength or weight or gear ratio and synchro options.

dangerous wrote:John,
I think the tranny you chose was the right one at the time.
The 930 would be over kill for your application and very heavy.
Also with a limited slip and all the right gears you will probably spend over $12000
The cores are about $3000, gears with dog rings are about $5000 and assembly labour and limited slip are unknown....all this plus GST!
The G50 like Steve has may be an option but I dont know much about their strength or weight or gear ratio and synchro options.

Thanks Dave,Yeh i spoke to Henry aquiet a while ago about the box that he built for me, even he wasnt sure the box wouldnt handle the 300 hps....The cost you have given me above SHIT what a blow out!..I spose i might talk to a few Porsche blokes that have a standard G50 and see what they think its like for racing.JVLRcing

And just cause I like the program so much,

here is a graph showing Steve's ratios

I love a car that can exceed the maximum speed limit in second gear.....

Hi

Thanks for the chart, the ratios are not "racing" ratios but for the intended use they will be fine. Been drawing on the chassis where it needs to be cut, this wont be a bolt in job.

Steve

Are you going to do similar to what Reub's car has, ie coil overs in the rear and a hole through the torsion tubes ? looks like a lot of work, but would be worth it.

I assume the G50's are a hydraulic clutch setup ?

Hi

I going to use 26mm short (40hp) torsion bars and weld the splines into the left whats leftover after cutting the centre out housing out. Im not using a Porsche clutch so I will most likely use a Saab hydraulic thrust race. The Porsche clutch is a pull type









Stevenn[ Edited on 18-8-2005 by 1303Steve ]

Yes, I also have a saab throw-out bearing for mine, but will probably
put extensions on the pressure and bleed fittings so as to reach them easily.
That is what Albins has done with his Mega Tranny.
I turned the splined hub (for the tortion bars inboard spline) outside diameter down
and rewelded it back in, but can only get the tranny forward enough to put
the CV's center line back to standard. The engine will still be back in the car.
The 5 speed likely hangs out further.
Oh yeah Steve, what are you doing for a clutch disc? I use 180mm discs and need some hubs for them.nn[ Edited on 19-8-2005 by dangerous ]

Thats a big hole Steve. Its a big and bulky box at the front hey. Would you be able to post some dimensions of the front of the box. Total height. Width and the Height from the shift rod to the very top of the nose cone.
Cheers
Dean

Hi Dave

Im getting some adjustable sway away torsion bar splines, hopefully I can cut them in half and have an adjuster in each chassis fork, if that dosent work I will do what you did.

The later Common doors have a hydraulic thrust race with the pipples on the outside, likely I can do the same thing with a Saab one.

Im also moving my tranny forward for better weight distribution, the front will end up near chassis number on the pan.

Do you have any pictures of what you did to barce your chassis after you took the torsion bar centre out?

Steve

The sway away centre,

1303Steve wrote:Hi Dave

Im getting some adjustable sway away torsion bar splines, hopefully I can cut them in half and have an adjuster in each chassis fork, if that dosent work I will do what you did.

The later Common doors have a hydraulic thrust race with the pipples on the outside, likely I can do the same thing with a Saab one.

Im also moving my tranny forward for better weight distribution, the front will end up near chassis number on the pan.

Do you have any pictures of what you did to barce your chassis after you took the torsion bar centre out?

Steve

The sway away centre,

You wont go wrong with swayaway products thats for sure.My drive shafts are this product.JVLRacing:thumb

Sorry Steve, no photos, I am really limited in my computor skills.
Also my computor is a '95 model.
Any how, I was actually going to fit a type three rear end into
my tube chassis car after the crash, and completed the narrowing
and clearancing but never actually welded it in...still haven't
commited myself yet, because I think there may be a better
suspension setup but just don't know what it is.
Either way the 930 tranny is going into the chassis car before I
race it again.

dangerous wrote:Sorry Steve, no photos, I am really limited in my computor skills.
Also my computor is a '95 model.
Any how, I was actually going to fit a type three rear end into
my tube chassis car after the crash, and completed the narrowing
and clearancing but never actually welded it in...still haven't
commited myself yet, because I think there may be a better
suspension setup but just don't know what it is.
Either way the 930 tranny is going into the chassis car before I
race it again.

Hi Dave,Are you building a tube chassis car?JVLRacing

Did that and crashed it John....in 2002.