Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!





Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

Did you get a great deal? Let us know in the Values & Prices Paid section!
Meet your fellow owners in our Owners Clubs

Mazda Protegé

1216217219221222754

Comments

  • chicagoprochicagopro Posts: 1,009
    um...where ARE the rotors? (and for that matter, where is the exhaust manifold?)

    I wasn't trying to be a wise guy in my previous post...you've got me totally convinced: no cold water on the rotors (whatever and wherever they are). I went to the CarTalk link (thanks for that, btw) and read the info there, too. So now I just want to be sure I don't shock any part of my car into warping...
  • vocusvocus Posts: 7,777
    The rotors are those big, round things you see when you look "inside" the wheels on the car. They are what the brake pad grabs when the car is being stopped. Scary to me to think that a little pad and a 1-inch thick piece of metal are what stop a 2500+ pound car. :)
  • chicagoprochicagopro Posts: 1,009
    Thanks for the info...now I know what you guys mean. Had no idea those were the rotors. Totally makes sense that if they get really hot, you wouldn't want to blast cold water on them.

    They should probably make new car owners like myself take some sort of test on the parts of the car before we take delivery :)
  • mdaffronmdaffron Posts: 4,421
    Then there'd be no women on the road!!!

    YEAAAAAHHHHHHH!!!!!

    JUST KIDDING!!!!!!!!!!!!!!!!!!!!!

    Meade
  • vocusvocus Posts: 7,777
    That's not always true about women not knowing about cars. My mother helped build 2 race cars back in the 1960s when she was in her early 20s. Also, I know a guy friend of mine (who is 24 and been driving since age 16) who doesn't even know how to change a flat tire on his 1997 Nissan Sentra or how to add power steering fluid to it!
  • mdaffronmdaffron Posts: 4,421
    I said I was KIDDING!

    Meade
  • chicagoprochicagopro Posts: 1,009
    I just don't even know what to say :)

    Love and kisses,
    MS. Chicagopro
  • chicagoprochicagopro Posts: 1,009
    That's pretty cool about your mom...is that how you know so much about cars?
  • shriqueshrique Posts: 338
    I think it's correct in saying that the majority of men and women dont' want to have a thing to do with their car if they can help it.

    I will say however that your more likely to find a guy that is a car nut than a women that's a car nut. I think I only personally know one female car nut. Of course the rest of my guy friends don't know a thing about cars. (chuckle)
  • SporinSporin Posts: 1,066
    And another thing... if your rotors warp, it is almost always cheaper to replace them with aftermarket ones instead of Mazda OEM ones.

    It pays to shop around. When I have to replace mine, I'll go with a nice set of drilled aftermarket units.
  • vocusvocus Posts: 7,777
    I just took an interest in cars when I was 3 years old and she gave me my first Matchbox car. :) I was thinking about being an auto mechanic, but not sure if that's what I want to do forever (and hate the idea of being dirty all the time too). My mom wanted to be a race car driver when she was in her 20s, but never made it.
  • mazdafunmazdafun Posts: 2,329
    Cross-drilling of brake rotors allows more air circulation, thereby cooling down the rotors more quickly. However, "vented" rotors means the rotor disk is actually two plates, between which air channels are incorporated (versus solid, which are made from one plate). Cross-drilling allows yet more air circulation.
  • maltbmaltb Posts: 3,572
    Actually cross drilling provides a place for the rapidly heated air to compress so that it doesn't lift against the pads. It's not really about cooling but rather providing a channel for the air to escape or be compressed.

    Venting is however for cooling rotors.
  • ashutoshsmashutoshsm Posts: 1,007
    Seems like it would reduce the effective surface area available for the drums or brake pads to rub against - wouldn't/mightn't that reduce braking efficiency?
  • maltbmaltb Posts: 3,572
    that's physics 101.

    Follow me here...
    pressure is measured in lbs/sq. in.

    If you reduce the surface area you increase the pressure proportionately. Being that the pad size never changes, the only effect will be on the longevity of the rotor which is negligible. Cross drilling only increases the effectiveness of the pad/rotor contact.
  • SporinSporin Posts: 1,066
    And, if you want to get even more nit=pickey-technical.. it reduces unsprung weight.

    By the teensiest amount, but every ounce counts. :-)
  • maltbmaltb Posts: 3,572
  • fowler3fowler3 Posts: 1,919
    grooves in rotors, what causes that? I have seen quite a few rotors with grooves in them.

    Fowler3
  • So vocus, what does your mom think of the protege???
  • dinu01dinu01 Posts: 2,586
    As far as I know I wish I had 4-wheel disc brakes instead of 2 discs and 2 drums... Didn't get the ABS ($1000 more?).

    Question: Are cross-drilled rotors worth the $$$ over regular rotors (price-vs-performance-vs-longevity)? What do you guys think? What about ventilated (the ones where 2 plates form the rotor) ones, like they have it on Porsches?

    In other news, we're in mid-December and you can see grass in T.O. and the odd patch of melted snow from last week. Feels like a California winter so far. Fairly warm too (meaning I didn't get frostbite yet or "glued" my tongue on my jacket's zipper :) )

    Cheers!~
    Dinu
  • vocusvocus Posts: 7,777
    My mother passed away in January 2001, so she never got to ride in the ES (bought it February) or my Jetta. She liked my 1999 DX though, even though it was a "stripper" by her standards. :) She drove it a couple times, and said it reminded her of the zippy cars she started out driving when she was my age. She never even complained about the power in the DX, which I found unusual.
  • mazdafunmazdafun Posts: 2,329
    You probably wouldn't notice the difference in every-day driving. You'd notice it during racing or long down-hills when you're on your brakes a lot.

    Grooves that form are due to uneven wear. It happens since the same arc on the pad travels on the same arc on the rotor. A small amount is OK. Too much can cause squeal, vibration, generally poorer braking.

    Grooves machined into the surfaces are ostensibly to help clear air from between the pads and rotors. I don't think at most NA speed limits they do squat, since I don't think a significant air cushion forms between the pads and rotors.

    Maltb is correct in that cross-drilled holes can relieve this air pad. I still think they play more of a role in cooling the rotors than in removing compressed air. Maybe at 65+mph, they start to make a difference in brake effectiveness.

    I think the stock rotors in front are the ventilated type. Unless you race or live in tall, hilly terrain, cross-drilled rotors won't make a noticeable difference from ventilated discs. Of course, they look very cool when seen through alloy wheels. :)
  • dinu01dinu01 Posts: 2,586
    Thanx for clearing up any questions I had.

    Fowler: Chat in "on" for tonight?

    Dinu
  • the_big_hthe_big_h Posts: 1,583
    indeed on tonight, 9ET/6PT
  • fowler3fowler3 Posts: 1,919
    tonight for chat! Bring your questions and answers and general car topics and join us for a fun hour!

    The fastest hour in the West.

    fowler3
  • dinu01dinu01 Posts: 2,586
    until CHAT time baby! Dinu will calm down now and wait until 9pm :) :)
  • if the transmission fails not allowing to GO. These cars have had chronic tranny problems!! The 626 is even worse! I have had 4 trannys in mine and it has only 70k. As far as I am concerned Mazda can their crap and leave the country (but leave Ford the Miata). The customer service line for this company is a joke. What's this crap about I can't talk to a supervisor they have to call me back?? Every time I call the supervisor is "busy" and will have to call me back. Buh-Bye mazda...I had an '86 Buick Centrury with a god awful 2.2L 4-cyl that had more zoom-zoom!!!
  • newcar31newcar31 Posts: 3,711
    "Leave Ford the Miata" Yeah right. Was that a joke? "These cars have had chronic tranny problems" Get your facts straight. It's the automatic (a Ford design) 4 cyl 626 that has had chronic tranny problems, not the Proteges. '86 Buick Centurys didn't have 2.2L engines, if it was a 4 cyl, it was a 2.5L.
  • I never said it wasn't the automatic tranny. Re-read my post. As for the 2.2 that was a slip, I meant 2.5. And get your facts strait...the `99 model year for the protege had the same tranny problems as the 626 did and still does!!! While we're at it...lets mention the chronic oil pump failures in the MPV which is causing premature engine failure. Ford designs yes...but you don't see Contours/Mysiques/Cougars/Focus/Escorts (with exception of the 3-spd offered a while back)with these types of problems with the frequency of the Mazdas. Oh wait...that's right, the Tribute has Tranny problems for the ´01 model year. Before you thrash my current offering do your research and get your facts strait. As for the Miata being a Ford...Ford can certainly as some flair to it with a slight redesign and a bit more power. It would fit perfectly beneath the Mustang and above the much contemplated convertible Focus.
  • SporinSporin Posts: 1,066
    Anecdotal evidence means nothing. Feel free to post statistical data. I'm not doubting you, but you need to quaote a source with real data.

    EVERY consumer magazine I have read has the Protege for the last few years as being a best buy and highly recommended with very few quality issues. That's one of the reasons I bought it. :-)
Sign In or Register to comment.