Edmunds.com | Inside Line | Auto Observer Your Account | Help | Directory
You are here:
![[F]](http://a332.g.akamai.net/f/332/936/12h/www.edmunds.com/media/townhall/webxicons/site.gif){kind=small}
Forums
Coupes & Convertibles Mazda RX-8 Mazda RX-8 Care & Maintenance
103 messages, Last post on Oct 25, 2009 at 5:17 AM
You are in the Mazda RX-8 Forum. Your Host is claires
|
Replying to: dwynne (Sep 03, 2005 11:41 am) What actually warps the rotor is when they torque to full value the first nut, then do the next, the next, etc. The wheel tends to not centre properly on some vehicles, and when the first nut is torqued down, it holds the wheel off-centre enough that when they torque another the wheel acts like a wedge pressing against the edge of the rotor hat. This can slightly bend the rotor hat on one side on some vehicles - not all are suseptable, explaining one reason why some vehicles are more prone to warping than others. For those that don't get into this, the rotor hat is the part that holds the brake rotor to the wheel hub. Sometimes it's one piece with the hub, sometimes it's a separate piece. The solution, or way to avoid rotor warping from this cause, is to hand tighten all nuts first. Then use three tightening passes, first at 10% or so final torque, next at 60% or so final torque, and the last at full torque, always moving across the stud circle to do the next nut. This is what I have always done, after noticing the wheel can get offset if you torque the first one without the others tight. I've found that generally, differential heating and poor installation are about equal in cause of warping on suseptable vehicles. Not all will warp from poor installation, and not all will warp from differential heating, though, so the #1 cause will vary from vehicle make/model to vehicle. |
|
|
as always, thanks for the info! People like you make this forum the greatest!!! and if driving 90+mph on a mountain pass (at midnight), then braking hard to avoid a big owl in the middle of the road, then sitting for 5 min or so, to catch my breath, qualifies for "classic rotor warping" - I am guilty of that! |
|
|
Replying to: tjjjr2 (May 11, 2005 3:51 pm)  Dealership in NC told me today that Mazda is OK with them using 5w30 oil in our area. I am still a bit concerned that this is going to make my gas mileage worse. (I'll be checking even more carefully)
|
|
|
Anyone experience an engine squeek which is most audible when the car is warm and idling? Had the dealer check it out yesterday and they tell me that it is a normal noise from the oil pump? Supposedly there is no prior information regarding this problem and the Mazda techs told the dealer that this noise is more noticable on some RX8's than others but that it is normal? At the dealer we had the car up on the rack. The engine mounts checked out, and belt lube did nothinig. I have been next to other Rx's at the gas station and not heard those vehicles making this squeek. Any thoughts? My RX8 is a 2004 and I have had problems with transmision failure, warped rotors, and battery failure. |
|
|
Replying to: wpavlik2 (Sep 07, 2005 4:21 pm) I believe I will be taking it somewhere else to get it changed again and put 5w20 in. I'm rather annoyed by the whole thing. Anyone else had this happen? I have to wonder if the folks getting the really bad gas mileage are having 5w30 put in without their knowledge?
|
|
|
Replying to: wpavlik2 (Sep 23, 2005 7:17 am)
|
|
|
Replying to: flatpick (Nov 24, 2005 11:31 pm) I dont get on here much. I'm in Winston-Salem. |
|
| Since i had to import my RX-8 from the states, there aren't many garage's that would know their whereabouts on the RX-8 so i have to end up doing all the servicing and such by myself, or taking it to a garage and telling them specifically what to do. I've been using the owner maintenance table for a while now; in addition to my personal knowledge. But i was wondering if there is anything else i have to be looking at in terms of services and service-intervals? thanks | |
|
Replying to: zoomrx8 (Apr 22, 2004 9:39 am) |
|
|
this was addressed in a thread in another popular rx8 forum, but it's hard to wade thru all the smarty-pants responses that go on over there. My question is, Are there any fuel additives (like injector cleaners...) that should be used in our cars? Are there any advantages? Is there a risk of damaging anything? And, if there is something out there, what brand, what's best and how to use it effectively? I know Pathstar can give us a good and KNOWLEDGEABLE answer and others here can as well. Thanks!
|
|
You are here:
Forums
Coupes & Convertibles Mazda RX-8 Mazda RX-8 Care & Maintenance
New? Join Now!
Forum Tools
Search Forums
Browse by Vehicle
2010 Mazda RX-8
Browse by Board
Browse by Topic
Today's Chats
