superiorx120

so i learned that integra ls front caliper and disc is bigger than 99 civic dx.. so now my question is if i buy integra front caliper and disc can it be straight bolted up on my civic or do i need to modify something?
*detailed and knowledgable advice pls.. tnx ht!!!

Libertariat

Not without modifying the caliper to accommodate the shape of the DX knuckle.

If you convert to EX knuckles it will be a bolt on affair.

nealnanoHX

Plus 1 the DX, LX and HX has smaller front brakes but no by much. You will need to swap the knuckle for a EX, Si or Teg. I have a HX and just swap to rear disc and upgraded the front pads and rotors. Made a bigger difference in the cars braking.

Libertariat

SI and EX knuckles are identical.

Also, converting to rear disc brakes will have 0 measurable impact on performance. It will make the brakes easier to service and look better, though.

nealnanoHX

Yeah EX Si and Teg front knuckles are all the same, that is why I said it. And swapping to rear disc makes a big different in braking performance compared to the crappy rear drums most Civics come with. On the skid pad my braking distant went down about 15ft with just rear disc swap, not to mention I can feel the difference every time I track my car. Disc also get rid of heat much better than the rear drums, so they make a huge difference at the track.

Libertariat

I think a lot of that is in your head. A lot of civic autocross driving champions I see use drums, and I didn't notice any difference at all in my cars driving either on the street or at any succeeding autocross event.

I won't say it doesn't help, but the "difference" is not "big" as you've put it. Your straight line 60-0 is not going to change much --if at all-- with a rear brake swap.

Red_Army

70% percent give or take a little of all braking is done in the front.
even when you swap look at the size difference between front disc brakes and rear.

drums are better at braking but a PITA to replace.

94eg!

iTrader: (2)

Just because the rear only does 30% of your braking, doesn't mean it isn't 100% important.

Running rear discs does offer you the option of unlimited rear pad compounds to fine tune your brake bias. If you run really aggressive high-friction rear pads (think axxis ultimates), you can expect to trade some braking stability for a very real decrease in stopping distance.

You have to be really careful mix-matching pads though. Especially with untested hybrid brake systems. I had Raybestos front pads with smaller CX front calipers & rotors mixed with axxis ult rear discs. This setup was EXTREMELY aggressive as it could pretty easily lock up at least one rear tire under heavier braking conditions. The less brake torque you put up front, the more aggressive the stopping potential until you loose stability (see chart below). I would NOT recommend the above setup to anybody. lol

I've since switched to larger 10.3" front brakes w/ Del Sol VTEC calipers (slightly smaller caliper piston than Integra) w/ stoptech pads in the front (same setup as 92-95 JDM SiR). The Axxis rears are still a slightly more aggressive compound, but not nearly as sketchy under heavy breaking. I still need to do a little more testing. I still have the option to swap to stoptech rear pads to move bias a little more forward to increase stability.

PS: I have a 94 CX and an Integra 4040 prop valve.

Red_Army

your right its still important but for i'll say 85% of the people on here it will make little to no difference because of what they're going to use it for.

94eg!

iTrader: (2)

What are they going to use it for?

I just have a street hot-rod and I still find them useful. But I see what your saying.

Personally I would not want to modify the front brakes without doing the rears as well. As you can see by the chart, increasing front brake torque alone is not a desirable thing.

Red_Army

i imagine most on here use them for a DD that might get on it on the highway.
not saying they aren't useful just money could be better spent with same results.

just like any system in a car do it all or not at all.