All Things Mk5 > Performance Modifications
Lightweight Crank Pully
Shoduchi:
No vibrations that I've noticed. Just quicker accelerations. No significant differences on engine braking, maybe just a bit more than before if you really pay attention to it.
Not damping the injection harmonics and thus not preventing engine damage did my head and decided to return to stock.
pudding:
--- Quote from: Shoduchi on March 13, 2017, 11:35:04 am ---No vibrations that I've noticed. Just quicker accelerations. No significant differences on engine braking, maybe just a bit more than before if you really pay attention to it.
Not damping the injection harmonics and thus not preventing engine damage did my head and decided to return to stock.
--- End quote ---
Although damage may not happen, I think I agree with you in that I would rather have peace of mind than slightly improved throttle response. It's just one of those bad luck things that would break on the way to work, or on a long road trip :grin:
Shoduchi:
For whoever didn't check my build topic, I'll leave this link that Dan_FR shared with me, that convinced me that it was better to not risk damaging my engine when revving it to high rpm on my track days: https://www.facebook.com/JNLRacing/posts/1141770932518180.
About OEM crank pulleys:
--- Quote ---They are designed to cancel out secondary harmonics from combustion cycle. Remove them and the big end bearings will fail over time especially at high rpm. Will damage journal but not snap/break Forged crank from can engines.
--- End quote ---
--- Quote ---Audrius Bagdonavicius:
If engine will be balanced with light weight pulley, this won't happen.
JNL Racing:
Unfortunately it still will with this particular type of engine and many of the vag range as you can't balance for secondary harmonics from combustion cycle. Look at the 4.2ltr v8 that came in the tvr's. Sit at exactly 80mph on motorway and the crank would snap along a mains journal. Perfectly balanced crank with no harmonic dampener.
--- End quote ---
th3_f15t:
All a lot of good information there... I will likely stick with my original plan of fitting the Fluidampr when I totally build my TFSI engine in the future. For now I shall save the money.
pudding:
Interesting reading on the fluidampr - http://www.golfmk6.com/forums/showthread.php?t=94020
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version