March serp belt pulleys with factory brackets
So I got the serp belt stuff in my car and it seems to work. I ran into a snag with the alternator pulley though. The serp belt pulley is wider than the v-belt pulley so there is less thread exposed on the pulley shaft stud. The original flange nut was not threaded all the way through so it would not grab enough threads to stay put. I put it on but I knew it would come off. I turned the motor over with a remote starter button and it popped right off so that was no good.
Went to the hardware store to see what they had and the selection of nuts is limited in 14mm x 1.5 thread. I basically needed a shallow lock nut or a flange nut that was threaded all the way through. A lock washer would not work because the edges of it would dig into the pulley face and gouge it up. I got a regular hex nut but there's no way to lock it so it would probably end up coming off eventually. I got a wave lock washer that flattens out but I have yet to put it on. If I can get it tight, it will be fine. Other than that, it's Loctite.
I also need to get a 44" belt because the March pulleys are a smaller diameter than the OE type pulleys. The 46" belt was way too big. The 44 fit well and still provided enough adjustment if necessary. I may look into a tension rod set up at some point.
If anyone else does this, I used a Dayco belt, 5060440 which is 44". Obviously different accessory setups will require a different belt.
Here's the pulleys. The crank and water pump are from March, the alternator is from KRC Power Steering.
Here's the original pulley on the Denso alternator with the big 22mm nut. This is where the problem came up because the serp belt pulley is wider than the v belt one and leaves less threads to catch on the stud.
Here's the serp belt pulley on the alt. You can see how the nut is just sitting there.
Here it is in the car. It did not really need any alignment, it was all pretty square from the get-go. Nice stuff. How it does what it's supposed to!
So I got the serp belt stuff in my car and it seems to work. I ran into a snag with the alternator pulley though. The serp belt pulley is wider than the v-belt pulley so there is less thread exposed on the pulley shaft stud. The original flange nut was not threaded all the way through so it would not grab enough threads to stay put. I put it on but I knew it would come off. I turned the motor over with a remote starter button and it popped right off so that was no good.
Went to the hardware store to see what they had and the selection of nuts is limited in 14mm x 1.5 thread. I basically needed a shallow lock nut or a flange nut that was threaded all the way through. A lock washer would not work because the edges of it would dig into the pulley face and gouge it up. I got a regular hex nut but there's no way to lock it so it would probably end up coming off eventually. I got a wave lock washer that flattens out but I have yet to put it on. If I can get it tight, it will be fine. Other than that, it's Loctite.
I also need to get a 44" belt because the March pulleys are a smaller diameter than the OE type pulleys. The 46" belt was way too big. The 44 fit well and still provided enough adjustment if necessary. I may look into a tension rod set up at some point.
If anyone else does this, I used a Dayco belt, 5060440 which is 44". Obviously different accessory setups will require a different belt.
Here's the pulleys. The crank and water pump are from March, the alternator is from KRC Power Steering.
Here's the original pulley on the Denso alternator with the big 22mm nut. This is where the problem came up because the serp belt pulley is wider than the v belt one and leaves less threads to catch on the stud.
Here's the serp belt pulley on the alt. You can see how the nut is just sitting there.
Here it is in the car. It did not really need any alignment, it was all pretty square from the get-go. Nice stuff. How it does what it's supposed to!