Coolant leak somewhere
Thread Starter
Senior Member
Joined: 03-17-2012
Posts: 1,042
From: Bay Area, CA
The banjo bolt? I've already got that off. I took one hose off...took me 10 minutes....ugh. But the 10mm bolt closest to the passenger side is blocked by the rusty thing connected to the turbo. I could *maybe* get to it with a swivel of some sort but it would be a PITA to put back on. I'm just gonna try to remove that thing connect to the turbo to make it easy on myself lol. Unless someone has a better way.
Thread Starter
Senior Member
Joined: 03-17-2012
Posts: 1,042
From: Bay Area, CA
it had some rust on the threads but the bolt was intact! I will post a pic when I get home.
99% sure the leak was from the water pump as the weep hole is in the back of the unit and cant be seen. But I am no expert on this...
I guess I'll just try to take stuff near the turbo apart till it comes off lol
99% sure the leak was from the water pump as the weep hole is in the back of the unit and cant be seen. But I am no expert on this...
I guess I'll just try to take stuff near the turbo apart till it comes off lol
Senior Member
Joined: 02-01-2006
Posts: 1,471
From: lockport,ny
BTW, I ordered the new "heavy duty" front timing chain guide from ZZP.
I have it now and I can say that it looks and feels MUCH stronger than the factory part.
From now on I am going to use this part instead of the factory-type that comes with the chain kits.
I can't comment on the ZZP part durability in actual use, but I do know that in EVERY timing chain replacement that I did (I have done about 7 or 8) the front guide was broken. I figure it doesn't get much worse than that and warrants trying a new design part.
As an engineer, this is my opinion (JUST my opinion, I haven't done any testing of course). GM designed the part to properly hold up to forces from the timing chain when all is well. Over time, once the chain stretches or the tensioner gets weak, the chain starts "slapping" the guide, exceeding the design load capacity of the guide. It might actually reach a point where resonance starts occurring (forces occur repeatedly at a certain rate and add up to a much larger force than just a single chain slap).
Steve
I have it now and I can say that it looks and feels MUCH stronger than the factory part.
From now on I am going to use this part instead of the factory-type that comes with the chain kits.
I can't comment on the ZZP part durability in actual use, but I do know that in EVERY timing chain replacement that I did (I have done about 7 or 8) the front guide was broken. I figure it doesn't get much worse than that and warrants trying a new design part.
As an engineer, this is my opinion (JUST my opinion, I haven't done any testing of course). GM designed the part to properly hold up to forces from the timing chain when all is well. Over time, once the chain stretches or the tensioner gets weak, the chain starts "slapping" the guide, exceeding the design load capacity of the guide. It might actually reach a point where resonance starts occurring (forces occur repeatedly at a certain rate and add up to a much larger force than just a single chain slap).
Steve
Thread Starter
Senior Member
Joined: 03-17-2012
Posts: 1,042
From: Bay Area, CA
I found a free pdf online of the gm performance book on the LSJ/LNF and they mentioned the billet front guide for applications over 500hp or something. It just sounds like something that needs to be replaced more often than it should though.
