transmission

[boygenius]

Originally Posted by cormac163

I have also amended my rear drum to a Kerscher disc set and 5x100 pcd so would i have to lose this and swap to porsche pattern wheels or can i keep my kerscher conversion?
i am sorry for bringing his up again

cormac

As far as I now the early 901 boxs us the 90mm type 1 sized CV. You can use you stock axles. Don't forget that you can change your stub axles to early 944 or type 181 to use 100 CVs if you want to if you get a later porsche gearbox.

[Wally]

Hi Cormac,
The 5-speed is only needed if you have an engine that only makes its power in a narrow usually high rev (type 1) bandwith.
Most type 4's don't really need a 5-sp for that reason.
However, if you want to dust other quick cars, you will need s/th for strength. That is where your focus should be IMO. Porsche tranny's are stronger from the design on. Thats the main reason for using them, again IMO.
5-speed does nothing for strength, on the contrary...
Since any porsche tranny needs body mods, a reinforced type 1 tranny may be more for you.

Take care,
Walter

[MattKab]

After a couple of years thinking, I'm sticking with 4 gears for my heavy Karmann '03 with T4 ~175bhp will do nicely. I'm going to spend the cost (~£750 ? ) of a good 911 5speed on my '79 AT 3.875 single sideplate T1. I've scored some T181 o/p flanges, NOS seals and gaskets, a ZF diff, 944 CV's and shafts and only need to find a reliable source of o.e. bearings and shims. I'm playing with other ratio's on paper but I'm undecided.

I use 225/45ZR17 rear tyres (same as 165 15) and would get 100mph at 4650rpm in 4th with this trans. 6500rpm would see 140mph, twice the uk limit, I like to drive for hours on end, (for years to come) without any hassle at 70mph/3250rpm

I'm building for road/track/motorway so I know it won't be a very quick 1/4 mile but will get me everywhere, even VW show's in Sweden and Germany somewhere in the future..

Matt

[cormac163]

i reckon that is where i am headed also i do want to dust cars but not to the extent of tking on al the fabrication at the moment. you see i went backwards and got the body sorted and now i am going for power.
thanks for the help. i am sure i will end up putting a five speed into the car but not just yet i might try it out on my brothers 1303 we are uilding up andthen if we o a good job mine shall be the next recipient......