CK5
Register an account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members.
BBC V-belt alternator - CS130 or CS144?
- Thread starter rcamacho
- Start date
Just swap out the pulley...running with the swapped pulley shouldn't be a problem,even with a BB.
As long as thing's line up your golden!
As long as thing's line up your golden!
I swapped out my 12SI for a v-belt CS144 on my 6.2 last year and haven't had any problems. I modified the stock bracket to work and installed a 4-guage wire between the alt. output and the battery.
You do have to keep the belt in good shape and tight to keep it from slipping under high load demands, but it's worked so far. I should be installing my winch later this winter which will be the big test for how well the v-belt will work with this alternator.
You do have to keep the belt in good shape and tight to keep it from slipping under high load demands, but it's worked so far. I should be installing my winch later this winter which will be the big test for how well the v-belt will work with this alternator.
I need to get some pictures of it since you are not the first to ask. Here's a quick rundown.
The distance between the two mounting holes (lower and upper) is larger on the CS144. To compensate for this I shimmed up the upper bracket by placing several washers underneath where it bolts to the manifold. On the 6.2 this causes the bracket to hit the heater hose fitting (just a barbed hose fitting) that is on the front of the engine and runs over the bracket. I replaced the straight barbed fitting with a 45 degree fitting rotated up and then notched out the bracket. The adjustment slot also needs opened up as the CS144 uses a larger bolt than the 12SI.
The lower bracket/mounting needed no modifications. However there is a spacer tube that runs between the block and alternator, this is not a problem but the spacer also has a support arm on it that normally attaches to another mount hole on the 12SI but will not line up on the CS144. You can simply cut it off as it's not needed.
The distance between the two mounting holes (lower and upper) is larger on the CS144. To compensate for this I shimmed up the upper bracket by placing several washers underneath where it bolts to the manifold. On the 6.2 this causes the bracket to hit the heater hose fitting (just a barbed hose fitting) that is on the front of the engine and runs over the bracket. I replaced the straight barbed fitting with a 45 degree fitting rotated up and then notched out the bracket. The adjustment slot also needs opened up as the CS144 uses a larger bolt than the 12SI.
The lower bracket/mounting needed no modifications. However there is a spacer tube that runs between the block and alternator, this is not a problem but the spacer also has a support arm on it that normally attaches to another mount hole on the 12SI but will not line up on the CS144. You can simply cut it off as it's not needed.
6.2Blazer said:
Just ordered a CS144 with a V-Pulley from alternatorparts.com. It should arrive sometime next week. Hopefully I'll be able to fab the mods and snap a few pictures as well. I'm really hoping this is straightforward as I'm getting tired of replacing stuff on my truck.
rcamacho said:Just ordered a CS144 with a V-Pulley from alternatorparts.com. It should arrive sometime next week. Hopefully I'll be able to fab the mods and snap a few pictures as well. I'm really hoping this is straightforward as I'm getting tired of replacing stuff on my truck.
Cancelled my order with alternatorparts.com. I'm headed to the junkyard this weekend to find a $35 CS144 to verify fit before spending $$$ on a custom built unit.
rcamacho said:
Well, I could not find a CS144 in any of the local wrecking yards. I ended up getting a 120A 17SI alternator from beck arney instead ~$130 with a lifetime guarantee. The 17SI has a larger case similar to the CS144 so it puts out more current at idle. I'm able to maintain 14-14.5V consistently now even with all the accessories on.
I ended up having to modify the upper bracket similarly by slotting the bracket for an 8MM bolt and spacing the bracket up on the manifold.
