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Old 01-17-2006, 02:55 AM   #1
Pyrate
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Default Drum to Disc conversion

Anyone know where to find detailed info on a drum to disc conversion for an 03 coupe?

Thanks

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Old 01-17-2006, 03:36 AM   #2
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Default Re: Drum to Disc conversion

Quote:
Originally Posted by Pyrate
Anyone know where to find detailed info on a drum to disc conversion for an 03 coupe?

Thanks

http://www.gravanatuning.com/applica...isc_Conversion

other than that kit, i don't believe anyone has swapped discs onto a non-rl ion. not sure about the other delta chassis cars (cobalt & hhr) if any of them had rear discs as an option. if available, they'd be the only real bolt on.

otherwise to swap the redline brakes on you'd also need the wheels (it's a 5-lug) for the rear and most likely alot more for the front.

i know the ion shares a bolt pattern with the s series, but i don't know if anything is compatible. the ion is a heavier car though.

lastly, failing all else; find a rotor that fits and have a caliper bracket fabricated.

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Old 01-17-2006, 12:48 PM   #3
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Default Re: Drum to Disc conversion

How about installing a complete redline rear end?

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Old 01-17-2006, 02:58 PM   #4
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Default Re: Drum to Disc conversion

I want to do a rear disc swap also, for $1165 it might be cheaper to swap in a RL rear
Does anyone know what the differences between the RL rear and my '03 QC3? If I can put Toyota axles under a Suzuki Samurai I can do this. There can't be to much of a difference between the two rear suspensions.

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Old 01-17-2006, 03:27 PM   #5
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Default Re: Drum to Disc conversion

wouldn't you have to change the front to 5 lugs as well? It would cost alot..I would think

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Old 01-17-2006, 03:57 PM   #6
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Default Re: Drum to Disc conversion

You wouldn't have to swap the front. Besides you wouldn't need to swap the whole rear anyway, just the hub. If I am not mistaken the hub costs around $120 a side, then of course you would need the brakes and rims. If you were willing to go all (ebay)aftermarket, I would guess you could complete the rear disc conversion for around $700 including rims/tires.

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Old 01-17-2006, 04:04 PM   #7
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Default Re: Drum to Disc conversion

Quote:
Originally Posted by slo96sl2
Does anyone know what the differences between the RL rear and my '03 QC3?
Stiffer shocks, 5 bolt hub, brake lines.....thats about it

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Old 01-17-2006, 05:09 PM   #8
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Default Re: Drum to Disc conversion

All prices are from Saturnparts.net

RL front hubs....131.85 each
RL rotors..........91.14 each
RL calipers........150 R / 162 L (don't know why....kinda odd, eh?)
Pads................67.60

RL rear hubs......126.87 each
RL R/rotors........73.15 each
RL R/calipers......116.72 each
Pads.................103.03

Total................1562.09

That's before fluid, labor - if you can't do it yourself - miscellaneous parts that may or may not be interchangeable such as ABS sensors, hoses, clips, parking brake cables, etc. Then, you need to buy 4 5x105 wheels, or find a wrecked Malibu, 9-3, G6, RL or Cobalt SS and get the wheels from it. Of course, you could just have the front hubs replaced with the 5 lug, have the rotors redrilled to match and buy only the rear rotors, hubs, calipers and save some money. Or, put the S-series rear discs on there, keep your stock bolt pattern and lower the cost a whole lot. Sleeper look maintained.

...
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Old 01-17-2006, 05:47 PM   #9
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Default Re: Drum to Disc conversion

in other words its not worth it.

the rear does not do enough of the braking to justify the cost anyway...

Also to whoever said you wouldn't need to swap the front, why the hell would you want to have a 5x110 rear and a 4x100 front? Good luck finding wheels in both patterns...

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Old 01-17-2006, 06:02 PM   #10
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Default Re: Drum to Disc conversion

Quote:
Originally Posted by IonNinja
in other words its not worth it.

the rear does not do enough of the braking to justify the cost anyway...

Also to whoever said you wouldn't need to swap the front, why the hell would you want to have a 5x110 rear and a 4x100 front? Good luck finding wheels in both patterns...
Exactly, unless you're doing a road-race chassis there's really no way to warrant the expense. Rear brakes don't do a whole lot of work, unless you set up the proportioning valve to apply front and rear equally on a straight stop....but don't do it in a corner at speed...wheeee! Money could be better spent on improved pad and shoe material and larger front rotors.

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Old 01-17-2006, 10:14 PM   #11
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Default Re: Drum to Disc conversion

Quote:
Originally Posted by IonNinja
Also to whoever said you wouldn't need to swap the front, why the hell would you want to have a 5x110 rear and a 4x100 front? Good luck finding wheels in both patterns...
I didn't say you would want two different bolt patterns, I just said you don't NEED to do a front end swap

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Old 01-17-2006, 10:50 PM   #12
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Default Re: Drum to Disc conversion

trade your Ion in for an Ion Red Line. it's easier than swapping brake parts.

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Old 01-18-2006, 04:59 AM   #13
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Default Re: Drum to Disc conversion

one note about changing the front; wouldn't you possibly need a hybrid axle? the RL and regular ions have two different manual trans's from different manufacturers (iirc on the last part). is it possible that the part of the axle that slips into the hub would be different too? probably larger to handle the additional torque? save swapping the entire trans/axle assm, you would need a hybrid axle custom made with the standard transaxle end and the rl hub end.

all this is speculative on the two models having different axles.

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Old 01-18-2006, 10:25 AM   #14
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Default Re: Drum to Disc conversion

Quote:
Originally Posted by DSLaBuda
one note about changing the front; wouldn't you possibly need a hybrid axle? the RL and regular ions have two different manual trans's from different manufacturers (iirc on the last part). is it possible that the part of the axle that slips into the hub would be different too? probably larger to handle the additional torque? save swapping the entire trans/axle assm, you would need a hybrid axle custom made with the standard transaxle end and the rl hub end.

all this is speculative on the two models having different axles.
I think the reason the axles are different is a strength issue, since the RL puts out more torque than the 2.2 or 2.4. The knuckle and outer CV joint are the same for all Ions, so I think all you'd need to do is change the hubs, rotors and calipers.

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Old 01-19-2006, 01:25 AM   #15
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Default Re: Drum to Disc conversion

Quote:
Originally Posted by saturn_69

...Or, put the S-series rear discs on there, keep your stock bolt pattern and lower the cost a whole lot. Sleeper look maintained.
Could you elaborate on that?

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Old 01-19-2006, 09:45 AM   #16
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Default Re: Drum to Disc conversion

Quote:
Originally Posted by Pyrate
Could you elaborate on that?
I'm not sure about the size of the rear hub, but technically, wouldn't the rear rotors from an S-series fit on the Ion? All you need to do is work out a backing plate for the rotor and mount the caliper....bingo, rear discs with the same bolt pattern as the front and a working parking brake. Really inexpensive even if you do buy new rotors and calipers, at least compared to the Redline pieces. My Dad made rear discs for my '78 Sunbird, it wasn't that hard...just took the rear calipers with e-brake from a wrecked Fiero, redrilled the rotors for my 4-lug axles and mounted them up with a 3/8 steel bracket. If you know someone who can cut steel or fabricate the mounting brackets, you could get it done in a day. Trust me, I've thought about it....

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Old 01-19-2006, 02:37 PM   #17
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Default Re: Drum to Disc conversion

I'll have to look into it. I have a set of S-series rear dics sitting in the garage.

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Old 01-20-2006, 10:43 AM   #18
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Default Re: Drum to Disc conversion

Another thing you could do is to buy the RL rear discs, backing plates, calipers, and just re-drill the rotors to match the regular Ion bolt pattern, then you wouldn't need the rear hubs nor would you need to re-do the entire front brakes as well. That'd run you about $500. Much cheaper.

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Old 01-20-2006, 11:38 AM   #19
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Default Re: Drum to Disc conversion

I heard you could just switch the hubs over to get 5lug. and im probably going to try this setup since the drums suck.

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Old 01-20-2006, 11:44 AM   #20
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Default Re: Drum to Disc conversion

Redline uses a different gearbox from Saab with equal length halfshafts. Regular Ion has unequal length halfshafts. Lots of different parts in there, I believe.

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