BoostedG6E Member 107 Member For: 6y 9m 13d Gender: Male Location: Melbourne Posted 12/06/20 01:53 AM Share Posted 12/06/20 01:53 AM Hey, Have recently bought second hand engine of someone which has only around 4,000k's. On start up and when not up to temp I'm getting this noise in the video. Once up to temp the sound seems to disappear. This video was filmed when engine was fairly cold and on a very cold night. I have heard of forged engines being louder than normal on startup but did not except it to last so long. Also has a TBRE cam and has not been tuned yet. IMG_6588_(online-video-cutter.com).mp4 Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 29,198 Member For: 16y 9m 26d Gender: Male Location: Melbourne Posted 12/06/20 01:59 AM Share Posted 12/06/20 01:59 AM either a pulley or a rocker... doesn't sound like it's affecting the way the engine is running in terms of smoothness, so it makes me think it's a pulley. Link to comment Share on other sites More sharing options...
BoostedG6E Member 107 Member For: 6y 9m 13d Gender: Male Location: Melbourne Posted 12/06/20 02:17 AM Author Share Posted 12/06/20 02:17 AM Thank for the quick reply, ill check both things when I get home. Any reason to why it would go away with temp though? Link to comment Share on other sites More sharing options...
Puffwagon Puff Gold Donating Members 16,097 Member For: 10y 6d Gender: Male Location: South Australia Posted 12/06/20 02:21 AM Share Posted 12/06/20 02:21 AM That's piston slap from being not fully warmed up. Mine is the same and it goes away after it's warmed up. Fwiw I'm running a 71c thermostat and I think that a 82c will be more suitable as the engine is very slightly quieter after I give it a hiding. Link to comment Share on other sites More sharing options...
sixman Donating Members 600 Member For: 20y 6m 14d Gender: Male Location: Hills District, NSW Posted 12/06/20 02:38 AM Share Posted 12/06/20 02:38 AM Yeah, that's the forged assembly. Mine sounds the same on cold start, running fine 40,000 kms later and 480rwkw. Usually only lasts minutes at most. Link to comment Share on other sites More sharing options...
BoostedG6E Member 107 Member For: 6y 9m 13d Gender: Male Location: Melbourne Posted 12/06/20 02:48 AM Author Share Posted 12/06/20 02:48 AM Hearing these responses is a big relief hah, mine lasts untill the temp gauge is just over quarter. Link to comment Share on other sites More sharing options...
gaz097 Bronze Donating Members 1,752 Member For: 13y 6m 15d Posted 12/06/20 08:41 AM Share Posted 12/06/20 08:41 AM What pistons. My Ross's are bad like that Link to comment Share on other sites More sharing options...
BoostedG6E Member 107 Member For: 6y 9m 13d Gender: Male Location: Melbourne Posted 12/06/20 08:41 AM Author Share Posted 12/06/20 08:41 AM CP Pistons Gaz how long does it last though? Link to comment Share on other sites More sharing options...
JETURBO ...JD TUNING ADELAIDE... Gold Donating Members 23,708 Member For: 16y 8m 5d Gender: Male Location: Adelaide Posted 12/06/20 08:58 AM Share Posted 12/06/20 08:58 AM This is why Atomic have had to step up their game as customers just couldn’t accept the fact a $20,000 engine made so much of a racquet on cold starts Atomic now have special design Cosworth pistons with zero noise but worth over $2000 a set 😬 Mahle power pack pistons are imho one of the quietest for typical piston money so have a think of you ever go to swop em out 6 hours ago, Puffwagon said: That's piston slap from being not fully warmed up. Mine is the same and it goes away after it's warmed up. Fwiw I'm running a 71c thermostat and I think that a 82c will be more suitable as the engine is very slightly quieter after I give it a hiding. What happened dude ? Did you pop the TT donk ? Link to comment Share on other sites More sharing options...
Puffwagon Puff Gold Donating Members 16,097 Member For: 10y 6d Gender: Male Location: South Australia Posted 12/06/20 09:03 AM Share Posted 12/06/20 09:03 AM 1 minute ago, JETURBO said: Did you pop the TT donk ? Yep. Link to comment Share on other sites More sharing options...
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