Big T
Well-Known Member
2.5K reactions · 283 comments | Timing Chain Slack is a Power Killer | Dave's Auto Center
Timing Chain Slack is a Power Killer.
www.facebook.com
-
Welcome to The Truck Stop! We see you haven't REGISTERED yet.
Your truck knowledge is missing!
- Registration is FREE , all we need is your birthday and email. (We don't share ANY data with ANYONE)
- We have tons of knowledge here for your diesel truck!
- Post your own topics and reply to existing threads to help others out!
- NO ADS! The site is fully functional and ad free!
Problems registering? Click here to contact us!
Already registered, but need a PASSWORD RESET? CLICK HERE TO RESET YOUR PASSWORD!
1999 Vortec 350
- Thread starter Big T
- Start date
www.facebook.com
Will L.
Well-Known Member
Yup. And if you guys paid attention to builds where guys share the information (n8in8or comes to mind) and anyone wanting any performance advances cam and ignition timing.
How his video showed slack at 90,000 miles- that is how much slack is in a 6.5 chain by 40,000 miles. High compression is what kills timing chains.
Gas engines at 8.5:1 and no turbo ran single roller chain. Go up to 10.5:1 and no builder wouldn’t jump to a double roller chain. How bad do you think it is at 21.5:1 (21.2 if gep).
Now- adding a turbo does it even more.
Many years ago on a different site a guy did the math and stock the chain should be Three double rollers if you never alter the boost or fueling.
In steps DSG making the gear drive system. When 6.2/6.5 sales deipp down, they stopped so Leroy started making them and went to the very fitting name “time keeper”.
Even for those who don’t want to advance timing- just maintaining it is big.
Ds4 automatically adjusts fpr a lot of stretch.
Db2 we notice it more. At minimum a guy should retime ip every 50,000 mile intervals but at 30,000 mile intervals it’s much more accurate.
How his video showed slack at 90,000 miles- that is how much slack is in a 6.5 chain by 40,000 miles. High compression is what kills timing chains.
Gas engines at 8.5:1 and no turbo ran single roller chain. Go up to 10.5:1 and no builder wouldn’t jump to a double roller chain. How bad do you think it is at 21.5:1 (21.2 if gep).
Now- adding a turbo does it even more.
Many years ago on a different site a guy did the math and stock the chain should be Three double rollers if you never alter the boost or fueling.
In steps DSG making the gear drive system. When 6.2/6.5 sales deipp down, they stopped so Leroy started making them and went to the very fitting name “time keeper”.
Even for those who don’t want to advance timing- just maintaining it is big.
Ds4 automatically adjusts fpr a lot of stretch.
Db2 we notice it more. At minimum a guy should retime ip every 50,000 mile intervals but at 30,000 mile intervals it’s much more accurate.
MrMarty51
Well-Known Member
The gassers I used to run, new timing chain every 100,000 miles and new oil pump at 200,000 miles.
Made them old SBCs mighty happy.
I sold the 93 K1500 at just under 300,000 mikes and it still was running mighty sweeet.
Guy I sold it to got stupid, didnt soend money for a coolant pump, eventually overheated the engine to the total cease.
Over 350,000 miles when it died but it stll had not been using oil.
Made them old SBCs mighty happy.
I sold the 93 K1500 at just under 300,000 mikes and it still was running mighty sweeet.
Guy I sold it to got stupid, didnt soend money for a coolant pump, eventually overheated the engine to the total cease.
Over 350,000 miles when it died but it stll had not been using oil.