Adding more than max oil level

DrBacon · 12-07-2020, 05:38 PM

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DrBacon · 12-07-2020, 10:11 PM

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Rusty · 12-07-2020, 10:39 PM

Had a friend years ago that drag raced a 427 big block Camaro. Mid season he would drop the pan and change out the crank and rod bearings to freshen it up. Did this for years with no issues. The one time he did his mid season. He put in the wrong size bearings. The bearings was 0.010" over. Start the car up and had low oil pressure. Couldn't figure out why. Ran the rest of the season. Said that was the best that motor has every run. End of season tear down and rebuild. That's when he found the over size bearings.

'

DrBacon · 12-09-2020, 04:42 PM

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Rusty · 12-09-2020, 05:05 PM

Quote:

Originally Posted by DrBacon

Ever heard the saying it runs best right before it lets go?

Ohhhhhhh yeaaaaa.

BettyZ · 12-09-2020, 06:49 PM

Quote:

Originally Posted by DrBacon

So he took it for a nice gentle drive to watch the oil pressure and it was going down to around 23-24psi at 3,000rpm under load, he said when he lifted off the throttle the oil pressure jumped up to 40s. After talking to him for a little while we both agreed it seems far too low. We will pull the engine within the next few weeks and check for damage/issues. Better than blowing up a 20-25k engine. We were just hoping it could've been literally anything other than internal, so much for being optimistic

Wish in one hand, sh1t in the other, and see which fills up first.

DrBacon · 12-13-2020, 04:06 PM

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Rusty · 12-13-2020, 04:17 PM

Not good. Looks like machining chips.

Wonder where that long piece came from.

FL 4Motion · 12-13-2020, 07:17 PM

Maybe that engine was only built to handle 1000hp once. Or 300ish hp 3 or 4 times...

Kinda like the harbor freight tools of motor builds.

Spooler · 12-13-2020, 07:58 PM

Ugg, not good. Good luck to him. Hope it is nothing expensive. Oil cooler will need to be replaced and all the oil lines cleaned.

DrBacon · 12-13-2020, 11:07 PM

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JARblue · 12-14-2020, 10:40 AM

Quote:

Originally Posted by DrBacon

The engine is fairly freshly built yes, there was an oil leak coming from the front timing cover after the build so it was taken apart to fix the leak, everything was rechecked at that point. All the gaskets were good except the bolts (or in this case, screws) were a little loose. The gaskets were replaced just in case and bolts retorqued with loctite. No change in oil pressure.

The engine is spec'd to well over a thousand hp but to be perfectly honest this was his first time building an engine so mistake very well could've been made. Just trying to make sure it could be literally nothing else.

Good luck with the rebuild

EPS has better bolts (than OEM or Z1) for the gallery gaskets

lol at the 1000hp spec... a first time engine builder has no business trying to get 1000hp out of a VQ37 block

ZoomZ · 12-14-2020, 11:36 AM

Damn!!

DrBacon · 12-14-2020, 03:50 PM

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Ghostvette · 12-14-2020, 09:50 PM

Quote:

Originally Posted by Rusty

Not good. Looks like machining chips.

Wonder where that long piece came from.

Looks like part of an oil ring.

12-07-2020, 05:38 PM	#16 (permalink)
DrBacon Enthusiast Member Join Date: Nov 2016 Location: Washington Posts: 285 Drives: 2014 Nismo Rep Power: 27365	. Last edited by DrBacon; 12-28-2020 at 10:28 PM.

12-07-2020, 10:11 PM	#17 (permalink)
DrBacon Enthusiast Member Join Date: Nov 2016 Location: Washington Posts: 285 Drives: 2014 Nismo Rep Power: 27365	. Last edited by DrBacon; 12-28-2020 at 10:28 PM.

12-07-2020, 10:39 PM	#18 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 35,180 Drives: 2011 Nismo GM 6M Rep Power: 2684437	Had a friend years ago that drag raced a 427 big block Camaro. Mid season he would drop the pan and change out the crank and rod bearings to freshen it up. Did this for years with no issues. The one time he did his mid season. He put in the wrong size bearings. The bearings was 0.010" over. Start the car up and had low oil pressure. Couldn't figure out why. Ran the rest of the season. Said that was the best that motor has every run. End of season tear down and rebuild. That's when he found the over size bearings. ' FL 4Motion and ZoomZ like this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

12-09-2020, 04:42 PM	#19 (permalink)
DrBacon Enthusiast Member Join Date: Nov 2016 Location: Washington Posts: 285 Drives: 2014 Nismo Rep Power: 27365	. BettyZ likes this. Last edited by DrBacon; 12-28-2020 at 10:29 PM.

12-13-2020, 04:06 PM	#22 (permalink)
DrBacon Enthusiast Member Join Date: Nov 2016 Location: Washington Posts: 285 Drives: 2014 Nismo Rep Power: 27365	. JARblue and BettyZ like this. Last edited by DrBacon; 12-28-2020 at 10:29 PM.

12-13-2020, 04:17 PM	#23 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 35,180 Drives: 2011 Nismo GM 6M Rep Power: 2684437	Not good. Looks like machining chips. Wonder where that long piece came from. FL 4Motion, johnxxx, Spooler and 2 others like this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

12-13-2020, 07:17 PM	#24 (permalink)
FL 4Motion A True Z Fanatic Join Date: Feb 2009 Location: FL Posts: 4,776 Drives: Baby Shark Rep Power: 701615	Maybe that engine was only built to handle 1000hp once. Or 300ish hp 3 or 4 times... Kinda like the harbor freight tools of motor builds. JARblue, Rusty, Spooler and 2 others like this.

12-13-2020, 07:58 PM	#25 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,798 Drives: 2013 Nismo 370z Rep Power: 2684392	Ugg, not good. Good luck to him. Hope it is nothing expensive. Oil cooler will need to be replaced and all the oil lines cleaned. FL 4Motion, redondoaveb and BettyZ like this.

12-13-2020, 11:07 PM	#26 (permalink)
DrBacon Enthusiast Member Join Date: Nov 2016 Location: Washington Posts: 285 Drives: 2014 Nismo Rep Power: 27365	. Last edited by DrBacon; 12-28-2020 at 10:29 PM.

12-14-2020, 11:36 AM	#28 (permalink)
ZoomZ Track Member Join Date: Jan 2017 Location: Vancouver, BC Posts: 760 Drives: 17' 370Z Nismo Rep Power: 40617	Damn!!

12-14-2020, 03:50 PM	#29 (permalink)
DrBacon Enthusiast Member Join Date: Nov 2016 Location: Washington Posts: 285 Drives: 2014 Nismo Rep Power: 27365	. JARblue likes this. Last edited by DrBacon; 12-28-2020 at 10:29 PM.

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