Sunday, November 14, 2021

More Adventures in Automotive Repair

6 groove belt decided it really identified as a 4 groove belt

Back in September, I was getting the family SUV ready for a road trip when I discovered that the drive belt (what we used to call a fan belt back in the day) when I discovered, for the second year in a row, that the drive belt was getting eaten. It was a little further along the path to destruction this time, and I'm reasonably sure that it would have come apart at the most inconvenient of times in the middle of nowhere late at night. Fortunately, I had a spare in the back (which I now need to replace come to think of it). 

The next set of photos come from an OOPS moment brought on by one to the stupidest trends: lowered and "stanced" cars. Late August/Early September, we went to our favorite breakfast place (Seven Mile Cafe in Highland Village...freaking amazing pancakes especially the cinnamon swirl pancake). Anyidiot, as we are pulling into the parking lot, I see the Black Scion pictured below limping into a parking spot dragging the rear bumper cover and grinding the frame on the pavement. 

Since I didn't see the precipitating event, I can only speculate. However, based on the damage and the drag marks in the pavement, it appears to me that the car was equipped with an aftermarket air bag suspension to get over bumps in the road like acorns and pieces of paper. It appeared to me that the air pump in the suspension failed as they were exiting the car wash next door resulting in the bumper cover getting yanked off and forcing them to grind their way to a parking spot. 






Now, I have nothing against people modifying their cars as long as it does not present a safety hazard to the general public. You do you. The modifications here, in my opinion, represent a safety hazard that should be confined to a show car or a track car as opposed to a street car. First, the suspension modifications make it difficult to go up and down even slight grades, speed bumps, etc. as evidenced by the rear bumper cover being torn off in a parking lot that normal cars have no problems with. The air bags are great....when they work. Unfortunately, they add in additional failure points that do not exist with the stock set up. 

Second, the wheels and tires. Using wider tires for more grip is an age old racing trick. Using tires that are a size or two too small for the rims...not so much. Lowering the suspension to the point that you have the wheel hubs have to be at canted to max camber angles eliminates the benefit of wider tires (specifically more contact patch on the road). There's the uneven tire wear to consider. And, most importantly, you can float that sucker in heavy rains no matter how much tread you have on the tires. Let's also not forget the damage to the frame. After grinding off whatever frame coating Toyota uses, the frame is now exposed to the elements and will rust if you spit in it's general direction. I wouldn't be surprised if that frame were to buckle in 3 to 5 years. 

Bottom line, don't do this kind of stuff and then use it as a daily driver. If you've got that much extra cash burning a hole in your pocket, invest in a truck and trailer to haul it to events if you need that much attention in your life. 

6 comments:

  1. I've tried explaining such things to a nephews. My advice falls on deaf ears, and soon some added feature appears. So far, nothing as bad as his first truck, which had the leaf spring hangers break late one evening.

    ReplyDelete
    Replies
    1. Jess, I hear you. Nephews (and nieces) tend towards deafness when advice is offered. They have to learn the hard way. The way you have to look at it is that it's better than them spending money on drugs.

      Delete
  2. I had a bad tensioner pulley on my truck that was eating the belt up in a few thousand miles. Didn't look or feel bad but when the tension was put on it cocked to the side & wore the edge of the belt out, it was coming apart just like yours.

    ReplyDelete
    Replies
    1. The tensioner pulley on the family chariot will be getting a thorough inspection and probable replacement once I have a chance to turn a hairy eyeball and a wrench in it's general direction.

      Delete
  3. I was going to mention the tensioner and idler pulleys as well. These are cheap, both in construction and to replace. Replace them when you replace the belt... always... It definitely looks like your belt was riding into the edge of one of the pulleys it drives. Something is causing it to misalign. Look at each pulley to see if there's one where the belt is riding up on onside of it. It only has to be off a millimeter or so to do this. Have you replaced any of the mechanisms driven by the belt; the alternator? The A/C compressor? The power steering pump? That would be the prime suspect. Perhaps the wrong pulley was used when rebuilding the part. Maybe the pulley wasn't torqued properly, resulting in it not being seated all the way onto its shaft. Also, if you have replaced one of these things, look at the pulley and count the ridges and valleys on it. They should be the IDENTICAL count as those on the crank pulley. If not, there's your demon...

    ReplyDelete
    Replies
    1. Pete, none of the major components have been replaced recently. The water pump was done about 2 years ago. The alternator was done probably 5 years ago. The water pump doesn't have a pulley of it's own just a shaft mount that the pulley bolts to. The alternator was a perfect match on all dimensions. I'm inclined to suspect the idler pulley, but your suggestion to check the bolts on the other components and pulleys makes good sense. I'll add an idler to the parts bin with RockAuto and see if that cures all ills.

      Delete

I am not easily offended. Please feel free to express your opinions: good, bad or indifferent. Basically, the "Golden Rule" applies. You get what you give. Treat others like trash here, and your comments will be trashed accordingly. Rudeness and vulgarity will not be tolerated.