Generale
15-10-2008, 07:13 AM
G'day.
I've been searching through the forum for an answer to my question, but I haven't found it, so all I can really do is ask!
When doing a balance shaft elimination kit installation, why does the top balance shaft have to be removed?
The new balance chain, or should I say oil pump drive chain goes nowhere near the top balance chain sprocket, and neither does the timing chain. To me it seems the only difference besides a weight loss that could be achieved by cleaning some of the junk out of the boot, is that there is now a bleeding oil gallery that should probably be plugged.
I know the bottom one has to be pulled because it is behind the oil pump, and replaced with a dummy balance shaft, but that should be easy enough even with the motor in. If I could get the harmonic balancer off with the motor in (but dropped) that shaft should come out.
So, please people. Fill me in on the details?
If you are curious and haven't seen the other threads I'm doing a quick and dirty fix on a motor which succumbed to a low oil pressure seizure due to the Curse of the Balance Chain, so I'm just going to be chucking in cheap bigend and conrod bearings, and figured I might as well do the balance shaft removal while I'm in there. I'm going to be pulling the oil pump to check for damage anyway, because there was far more metal in the gallery for #4 conrod than I could account for. Although I haven't pulled #4 main yet. Getting there.
I've been searching through the forum for an answer to my question, but I haven't found it, so all I can really do is ask!
When doing a balance shaft elimination kit installation, why does the top balance shaft have to be removed?
The new balance chain, or should I say oil pump drive chain goes nowhere near the top balance chain sprocket, and neither does the timing chain. To me it seems the only difference besides a weight loss that could be achieved by cleaning some of the junk out of the boot, is that there is now a bleeding oil gallery that should probably be plugged.
I know the bottom one has to be pulled because it is behind the oil pump, and replaced with a dummy balance shaft, but that should be easy enough even with the motor in. If I could get the harmonic balancer off with the motor in (but dropped) that shaft should come out.
So, please people. Fill me in on the details?
If you are curious and haven't seen the other threads I'm doing a quick and dirty fix on a motor which succumbed to a low oil pressure seizure due to the Curse of the Balance Chain, so I'm just going to be chucking in cheap bigend and conrod bearings, and figured I might as well do the balance shaft removal while I'm in there. I'm going to be pulling the oil pump to check for damage anyway, because there was far more metal in the gallery for #4 conrod than I could account for. Although I haven't pulled #4 main yet. Getting there.