Tuning Sei Rear Drum Brakes

[MazCinq]

Ok so I was wondering about something, before I start I don't want to get a string of replies just saying "Fit Discs to the rear as an upgrade" if wanted to do that I wouldn't be asking this lol.

Ok so the thought that ran through my head, are Mk1 Punto rear drums the same size as the Sei Mk2 rear drums??? if they are the same, does any-one know what fiat is fitted with bigger rear drum brakes that will bolt straight onto the Sei rear hubs, or failing this does any-one know any-one that has managed to fit bigget rear drum brakes???

 

[fingers99]

They're a different size and the internal design is rather more sophisticated on the Punto.

I've a vague memory that someone did it. A search might throw something up. It's not going to be easy at all.

Daft idea. Why would you want to do that?

 

[MazCinq]

My Sei is going to be used souly for the Track, with this in mind and the fact that I have had small cars with discs on the rear and I have found then alittle skittish on the rear under very hard braking, also my Sei is totally stripped out and will have a full roll cage, I am toying with the Idea of PGT's for the front but as I haven't had it on the track yet I don't know if I need better than whats on at the mo.

I just thought that the bigger Drums would offer a slight increase in braking performance but not let the lock up dead easy.

 

[fingers99]

I'd certainly go for PGT3s at the front.

Some folk who trail brake a lot seem to prefer disks at the back (Uno GT set up, essentially), others plumb the rears out completely or use brake bias to reduce the effort.

Under hard braking the rears will be pretty much airborne!

Drums tend to be more effective, but far less predictable -- larger drums more so, I'd bet.

 

[The Black Box]

I put on the mk1 punto setup it's a different design to a cento a lot less prone to seizing and has slightly bigger cylinders on them. It's a lot of faff to fit everything needs to be modified to accept the different cable setup handbrake and where the cable ends locate near the handbrake.

The punto backplates needs modifying holes welded up redrilled and centre enlarged but needs to be dead centre otherwise drum won't spin right. There's a few pics of the setup on my thread. The marea has a similar setup but a bit bigger but I'd imagine the same sort of headache.

I'd stick to standards just maintained really well tbh you could even go so far as making the actuators out of stainless should be fairly maintenance free then as won't rust togeather.

 

[fingers99]

Remember, too, that much of the stripping (but not a roll cage!) will tip even the static weight distribution forwards.

 

[ycming]

Remember, too, that much of the stripping (but not a roll cage!) will tip even the static weight distribution forwards.

More for you to make, stainless actuator .

Ming

 

[MazCinq]

think I will just stick with the stock rear drums and replace them ever 1000miles or so, the fronts I think I may end up going PGT3's if I can find a set lol.

Cheers guys for helping me decide lol

 

[mrcinquecento]

think I will just stick with the stock rear drums and replace them ever 1000miles or so, the fronts I think I may end up going PGT3's if I can find a set lol.

Cheers guys for helping me decide lol

Well that's a bit overkill! are you planning on driving with them partially on all the time? that's the only reason they'd even come close to needing changed every 1000 miles!

 

[MazCinq]

its going to be used on the track and will be flat out most of the time, brakes are 1 thing I wont take any chances with.

 

[mrcinquecento]

its going to be used on the track and will be flat out most of the time, brakes are 1 thing I wont take any chances with.

Fair enough, it's your money..... :shrug:

 

[fingers99]

I'd be more inclined to just use quality rear ones and check them regularly. The main danger will be the possibility of cheap ones "unbonding": even on track they won't see a lot of wear (indeed, on track they should be doing less work than on the road).

 

[jatkinson]

I had 1 of my rear pads delaminated when out on track,,, it was scary I tell you

 

[MazCinq]

as I said above, brakes are something I don't take chances with and I always buy the best I can, I try to stay away from unknown brands, think I will fit new ones before the first track day and then check them after every event and see how they go.

 

[jatkinson]

The best way for good brakes is to keep on top of them what looks like you will