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“What is the logic in using 944 rear end, trailing arms, hub and axles? @ALB  It would give you hub centric balancing.”

Well, yes.....That’s true, but the REAL reason for going to the 924/944 rear is for the much bigger disk brakes and a mechanical e-brake on them.  The hub centricity is just a bonus on top of that.

Last edited by Gordon Nichols

Correct me if I am wrong but a MkIV Jetta rear disk brake caliper, has the equivalent pad size and pistons essentially has those same features, including the mechanical e-brake and they fit an empi rear disk, rotohub is what they call it.  

You can choose whichever bolt pattern that you desire. 

My desire was to get the hub centric benefit of the 944 axles and with ROtohubs sometimes you need spacers and you don't get it. 

Anyway, that is how I got started on the 944 rabbit trail. 

MangoSmoothie.ca posted:
ALB posted:

@MangoSmoothie.ca- what size rear tires were you able to go with?

P185/60R15 Yokohama AVID TRZ tires

Thanks Paul!

IaM-Ray posted:

What is the logic in using 944 rear end, trailing arms, hub and axles? @ALB  It would give you hub centric balancing.

While that is true, Ray, it is my understanding that 944 rear trailing arms are wider (1"?) than Beetle irs arms, the 944 aluminum arms are not any lighter and because of their construction can't be narrowed like Beetle arms can be. Other than the brakes (which I think are huge overkill for our cars, especially since there are a number of rear disc brake kits already aimed at us) and the bolt pattern (which can also be done on parts intended for our cars) there's no real advantage.

Last edited by ALB

Initially a while back I was looking at the 944 for brakes mostly when I was building the car. 

I have come to understand that the 944 rear end offers me no real advantage but when I was having a balancing issue, I wondered if maybe the axles or the hubs being hub centric would give me a chance at a better balanced rear wheels.  

I cured my front end balance issue by getting new tires in April 2019 and the rear were new from 2018 but I still get a small rear vibration sometimes and, well you know the madness got to me and I started looking for hubs again.  I could get some hub centric rings made but I have to have a machine shop do them with my wheels and then they have to fit onto the empi below.  

The issue I have in getting them made is that I have a spacer then the castle nut as well which is actually bigger than the hub center so I have to remove the castle nut and the spacer then have it machined as a metal ring then reverse it ... 

A lot of work so I keep delaying getting it done. 

 

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  • mceclip0

I know it is overkill, but I am going to use CSP vented rotors up front w/ Wilwoods at the very least. There aren’t a lot of provisions for vented rotors in back with a functional e- brake, other than maybe the Coolrydes set-up. If someone knows something different, I am all ears. There is a buzz in the Hot Rod world about using a Tesla electric e- brake caliper. It is utterly mad, this madness!

RacerX posted:

I know it is overkill, but I am going to use CSP vented rotors up front w/ Wilwoods at the very least. There aren’t a lot of provisions for vented rotors in back with a functional e- brake, other than maybe the Coolrydes set-up. If someone knows something different, I am all ears. There is a buzz in the Hot Rod world about using a Tesla electric e- brake caliper. It is utterly mad, this madness!

Why don't you investigate using Empi solid rotors and VW Jetta MkIV rear calipers which have parking brake via cables.  

You will need a proportioning valve but then most of the braking will be done by your Wildwood.   Just saying

Thanks, will do! They might make a vented rotor for that (?) Haven’t made the final wheel choice, but it does look pretty cool when the calipers are painted and visible . There is a very knowledgeable fella at Vdub engineering that may have an insight as well. He sells brackets for the Wilwoods up front along with P-car brake swaps.

Last edited by RacerX
RacerX posted:

Wait a minute ... we are talking about the Jetta caliper, not the rotor. Geez, this getting old stuff ain’t for the weak!

Gee, yeah, it's when you can't remember if you brushed your teeth or even if you are wearing underarm or let alone got your zipper up ... then your in trouble.  

My mom at 93 said it is no fun getting old. 

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