different sized tires on the rear?, had to abandon the 914 at my inlaws tthis evening. :( |
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different sized tires on the rear?, had to abandon the 914 at my inlaws tthis evening. :( |
VaccaRabite |
Aug 7 2010, 08:45 PM
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#1
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En Garde! Group: Admin Posts: 13,465 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
As I continue to fine tune the car getting ready for the 3 hour drive out tot he ECC, I drove it out to my inlaws Thursday night. Spent Friday crabbing, and then was able to spend all day today tuning. Took several test drives that went perfect.
After washing the car, I noticed that one of the tires (drivers rear) had a 4 inch crack in the sidewall. Less then 2000 miles on these tires too. Dammit! Anyway I changed the tire with my spare. The spare is a larger tire then the rest of the tires, and I was worried that this might cause me a problem. I think that it did. When I went to go drive out, I started slowly. Rolling in first I heard the car go: "clunka - clunka - clunka" and I stopped. Backed it right back into my parking spot in my father in law's driveway. My wife was there and I got a ride home with her. So, my question. What made the sound? Was it:
I guess, if I had been smart, I would have taken off one of the front tires and put that on the rear so that both drive wheels were the same and the fronts were miss-matched. We did think of trying that before I left it, but I was exhausted and so was my son, so we just left it until I can get back there with a new tire sometime next week. The tires are mismatched because the full size spare is in the stock size, but my street tires are smaller diameter. I don't think I did any lasting harm. As I said, it only went a car's length before I stopped it and backed it back into the parking spot. Thanks Zach |
scotty b |
Aug 7 2010, 08:48 PM
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#2
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rust free you say ? Group: Members Posts: 16,375 Joined: 7-January 05 From: richmond, Va. Member No.: 3,419 Region Association: None |
How fast were you going ? Did the sound increase with the speed ? Spare could have a flat spot (IMG:style_emoticons/default/confused24.gif) Try putting the flat spot at the top and see if it goes away (IMG:style_emoticons/default/rolleyes.gif)
You know what, actually just scrap the damn thing and buy a Miata. They go for forever |
VaccaRabite |
Aug 7 2010, 08:54 PM
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#3
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En Garde! Group: Admin Posts: 13,465 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
I was going, maybe, 5mph. Probably less. Went forward 10-20 feet, heard a few "clunks". Backed it up 10-20 feet and heard a few more cluncks and parked it. No way on the Miata. If I wanted a little car that would just drive and not ever need my tinkering I would have bought... well... a Miata.
Zach |
scotty b |
Aug 7 2010, 08:58 PM
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#4
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rust free you say ? Group: Members Posts: 16,375 Joined: 7-January 05 From: richmond, Va. Member No.: 3,419 Region Association: None |
I highly doubt what you heard was the diff or anything detrimental. Take a closer look at it tomorrow and mae certain it is centerd, lugs are all tight, check the caliper and make certtain it hasn't loosend up. Check the rim to make certain it isn;t bent, tire is full etc. Gotta be something basic.
Attached thumbnail(s) |
jsayre914 |
Aug 7 2010, 09:04 PM
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#5
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Speed Up !!! Group: Members Posts: 3,188 Joined: 10-February 08 From: Timonium MD 21093 Member No.: 8,696 Region Association: MidAtlantic Region |
well, if i remember correctly... your inlaws are in baltimore (IMG:style_emoticons/default/smile.gif) That means you could fix it and pass by the shop. My car will be parked right in front
PHOTO OP (IMG:style_emoticons/default/beerchug.gif) (IMG:style_emoticons/default/beer3.gif) |
John |
Aug 7 2010, 09:06 PM
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#6
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member? what's a member? Group: Members Posts: 3,393 Joined: 30-January 04 From: Evansville, IN (SIRPCA) Member No.: 1,615 Region Association: None |
What wheels do you normally run?
What wheel was a spare? Are these still lug bolts or studs? If they are lug bolts, do you use alloy bolts (the long ones)? If your spare uses shorter lug bolts (IE STEEL WHEEL), your alloy lug bolts are too long and can cause interference. My guess is that is what happened. Otherwise, I would guess that the spare wheel is somehow interfering with something. I doubt it would be a differential. |
VaccaRabite |
Aug 7 2010, 09:11 PM
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#7
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En Garde! Group: Admin Posts: 13,465 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
My wheels are 4 bolt fuchs.
My spare is on a steel wheel. I was using the stock lug bolts, and they seemed to tighten up nicely. Sorry joe, the car is at Erin's folk's place out neat Westminster, Md. And I have to go visit my mom in the hospital tomorrow, so It will have to stay there probably until next weekend. (IMG:style_emoticons/default/sad.gif) Zach |
scotty b |
Aug 7 2010, 09:13 PM
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#8
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rust free you say ? Group: Members Posts: 16,375 Joined: 7-January 05 From: richmond, Va. Member No.: 3,419 Region Association: None |
My wheels are 4 bolt fuchs. My spare is on a steel wheel. I was using the stock lug bolts, and they seemed to tighten up nicely. Sorry joe, the car is at Erin's folk's place out neat Westminster, Md. And I have to go visit my mom in the hospital tomorrow, so It will have to stay there probably until next weekend. (IMG:style_emoticons/default/sad.gif) Zach Stock lugs for a steel wheel or stock lugs for a Fuch ? Big difference. Fuch lugs would interfere inside the drum as John mentioned. Attached image(s) |
John |
Aug 7 2010, 09:18 PM
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#9
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member? what's a member? Group: Members Posts: 3,393 Joined: 30-January 04 From: Evansville, IN (SIRPCA) Member No.: 1,615 Region Association: None |
My wheels are 4 bolt fuchs. My spare is on a steel wheel. I was using the stock lug bolts, and they seemed to tighten up nicely. Sorry joe, the car is at Erin's folk's place out neat Westminster, Md. And I have to go visit my mom in the hospital tomorrow, so It will have to stay there probably until next weekend. (IMG:style_emoticons/default/sad.gif) Zach Stock lugs for a steel wheel or stock lugs for a Fuch ? Big difference. Fuch lugs would interfere inside the drum as John mentioned. Now that was a funny pic. |
rick 918-S |
Aug 8 2010, 07:42 AM
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#10
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Hey nice rack! -Celette Group: Members Posts: 20,489 Joined: 30-December 02 From: Now in Superior WI Member No.: 43 Region Association: Northstar Region |
I was going to say CV joint until I read that you are using long fuchs bolts on a steel wheel. Put your stock tire back on and try it again. Bettcha no noise.
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Spoke |
Aug 8 2010, 08:00 AM
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#11
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Jerry Group: Members Posts: 6,991 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None |
Do you normally hear the clunking when rounding corners? This would be the same as having 2 different wheel sizes. Long lugs on a steel wheel could cause the noise. I have the same setup so I'll check for that when I get my car running. (IMG:style_emoticons/default/chair.gif) |
VaccaRabite |
Aug 8 2010, 08:37 AM
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#12
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En Garde! Group: Admin Posts: 13,465 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
Okay, good thing to know!
I need to get some different lug bolts for the spare tire. |
jim_hoyland |
Aug 8 2010, 08:46 AM
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#13
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Get that VIN ? Group: Members Posts: 9,318 Joined: 1-May 03 From: Sunset Beach, CA Member No.: 643 Region Association: Southern California |
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scotty b |
Aug 8 2010, 06:33 PM
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#14
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rust free you say ? Group: Members Posts: 16,375 Joined: 7-January 05 From: richmond, Va. Member No.: 3,419 Region Association: None |
Okay, good thing to know! I need to get some different lug bolts for the spare tire. DEERRRRRRRRRRR Attached image(s) |
tradisrad |
Aug 8 2010, 07:13 PM
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#15
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Senior Member Group: Members Posts: 985 Joined: 11-September 06 From: San Mateo, CA Member No.: 6,815 Region Association: Northern California |
My first thought was lugs not being tight, but then found that you used the longs bolts on the steel rim and I agree with the others about this being your problem. The bolts probably bottomed out.
I carry a set of short lugs in the event I need to put my spare tire on. |
maf914 |
Aug 9 2010, 11:27 AM
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#16
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Not a Guru! Group: Members Posts: 3,049 Joined: 30-April 03 From: Central Florida Member No.: 632 Region Association: None |
If the lug bolts are too long they will go through the disc and hub and possibly interfere with the backing plate (splash plate). That might be where the clicking is occurring. (IMG:style_emoticons/default/idea.gif)
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aircooledtechguy |
Aug 9 2010, 02:14 PM
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#17
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The Aircooledtech Guy Group: Members Posts: 1,966 Joined: 8-November 08 From: Anacortes, WA Member No.: 9,730 Region Association: Pacific Northwest |
Too long of bolts for a steel wheel; definitely. Take it from me, ( who grenaded a differential in my '66 bus by running mis-matched tired on the rear) it takes a lot of miles at freeway speeds to do the damage that way. I drove that tranny for 3 months daily before the diff went south. It went south pretty quick though once it began. (IMG:style_emoticons/default/headbang.gif)
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