924Board.org

[nrwilliams]

Hello all,

I would like opinions as I have been reading about the subject and am wondering if its worth the time and effort.

I have a 924 2.0 with 4 lug wheels, non vented disks on front and drums on back.

Is the upgrade to 5 lugs and disks all round a huge impovement in braking? I have a 944 with all the bits on and to be honest when the car was on the road I never found the brakes all that great (they were not in the best condition I will admit).

I had planned to convert my 924 with the parts from the 944 but am wondering if it is worth the effort?

The 924 is purely a track car, not racing and not used much on the road so it basically gets wheeled out to tracks once a month for a thrash.

Really appreciate peoples opinions.

Thanks

Neil

[Andrew NZ]

Well worthwhile for a track car. Much better braking power and less over heating.
_________________
Andrew
1977 RX924 race car
12a bridgeport supercharged
www.race4-dcup.co.nz

[nrwilliams]

Thanks.

As an addition just been reading about changing the single pot calipers to twin pot from a 911 SC. Anyone done this?

Thanks

[ideola]

[Cedric]

I havent had braking power(can lock up the wheels) or heat problems(even after an hour at the track) with my brakes on the n/a on the track, and ive done lots of it with that car. Wear has also been very low. The brake pedal feel is though better on my 931. If you have problems with the brakes on the n/a your system needs a checkup. The only real advantage is that you get rid of the problem with the adjusment on the rear brakes which you do need to do often if you do a lot of track. And maybe for the bling-factor
_________________
1980 924 Turbo
www.instagram.com/garagecedric/

[v8carreragts]

Ideola, you are correct. The rear 4 pot fit with 1/8" spacers between the calipers and the bracket but the fronts do not. I have 4 pot Jaguar XJ6 calipers on the front of mine.

[Rasta Monsta]

Early 911 calipers fit the five lug spindle, and the rotor is the same as early 944. I pondered this swap myself, and snagged some of the calipers. I ended up going a different route, as the pads were alarmingly small.

Discussed on Pelican.

In answer to your original query, there is no contest between solid front rotor/rear drum and vented disc/vented disc. I did my first track day with the early setup, and blew the material off the fronts in half a day. Also, the constant adjustment needed to make the rears effective when driven hard is not worth the effort, IMO.
_________________
Toofah King Bad

• WeiBe (1987 924S 2.5t) - 931 S3

[Joes924Racer]

Yea throw in some steel brakes line & a proportioning valve
to adjust front to rear braking and youll notice.
_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

[Cedric]

I drove 3 seasons of track driving on a set of hawk hp-plus, we were two drivers on the same car so it got a lot of beating. On an n/a it justn isnt worth it.. With 170hp and more weigth like a 931 its a nother question..
_________________
1980 924 Turbo
www.instagram.com/garagecedric/

[ideola]

It may come down to driving style, but all of the ITB racers I know in 924s have converted to 5-lug.

The other factor, in my opinion, is that it opens up a whole new realm of available wheels. Given the paucity of decent 4x108 rims, this is not merely a bling factor. And also, considering the talk about 14" performance tires becoming harder to source (at least here in the US), that's another benefit of changing wheels.
_________________
erstwhile owner of just about every 924 variant ever made

[Cedric]

On a race car I would consider it because of the rear adjustment. I´ve been driving at the outer edge performance wise on r-comp tyres, so maximum possible pain for the brakes. But as i said, on a race car it would be worth it to get rid of the constant adjustment...Or if you have a terrible braking technique

4x108 must be really hard over there, easier here since its more commonly used ..
_________________
1980 924 Turbo
www.instagram.com/garagecedric/

[ideola]

[Joes924Racer]

Isnt worth it.. hmm Im up I know wheres a stash of'em.
They dont cost that much. Why would you say it isnt worth it.
_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.