Engine blown at Thunderhill on Sunday

takjak2 · 03-24-2015, 02:59 PM

ValidusVentus, we'd all like to know if you had Revs over 7500 and any oil temp data you might have.

DR_ · 03-24-2015, 03:22 PM

On Porsches there is an over-rev counter and there are different tiers 1-6, level 1 being hitting rev limiter up to level 6 being 10k+ RPM money shift. I wonder if our ECU has anything.

Japanjay · 03-24-2015, 08:47 PM

You can tell he has logged some seat time for sure, cut him slack on crossing the line twice. Not like he fuel starved, catastrophic gonna cost me a lot of money engine failure. **** happens just like at the drag strip. Track went down for 15-20 mins, a friend of mine was there. Also a M3 flipped on turn 8.

takjak2 · 03-24-2015, 09:47 PM

Quote:

Originally Posted by ValidusVentus

My oil temps and level were perfectly fine with oil never exceeding 230-235

Studying the video your oil temp is past vertical, above 240 for the last few minutes and inches towards 260 before it lets go. Plenty of Zs have driven themselves to limp mode at 280 and survived, but it is a contributing factor.

Revs were climbing to only about 6k when it let go and I don't see him taking it near 8k much if at all. Long left hand sweeper.

How many miles on motor?

Japanjay · 03-24-2015, 10:03 PM

Canton Racing Products - Accusump Tech Way cheaper than a Dry Sump system. A buddy just showed it to me.

ENT-Z · 03-24-2015, 10:10 PM

Quote:

Originally Posted by Japanjay

Canton Racing Products - Accusump Tech Way cheaper than a Dry Sump system. A buddy just showed it to me.

I have been running this on my car for about 3 years now. I think it helps (no proof though).

ValidusVentus · 03-25-2015, 12:46 AM

Yep, you're completely right on the oil temp, I guess it was creeping to 240 in that session (pretty much the only unobstructed laps I have ever driven on that track) but its interesting how on the same lap the motor goes, it goes up noticeably higher. Only oil temp data recording device I have is the video and my brain.

Rev limit unchanged, 7.5K.

80k on the engine. I would estimate 2500 track miles, and a lot more general hard driving miles. If I cant use the power I almost always run it in a higher gear around high G corners to reduce engine wear and oiling issues. I also try to warm my oil before I take the revs high. Apparently it wasn't enough.

Yes, I F'ed up not leaving the track immediately. Was kinda struggling to absorb that I just blew my engine (never done that before) and for some inane reason was trying to coast it back to avoid a tow until they meatball flagged me and I gave up. I know that's not a good reason. After I stopped the oil thing immediately occurred to me and I felt like a total douche.

Oh and the gloves... those are go-karting gloves I snagged at the go-kart track in Dubai. Work great lol. I do own a pair of SFI approved but seem silly to wear since I'm not in a suit. Tho unburnt hands would be better than burnt hands.

Back on the subject of the thread, I have been in contact with Brian at Valkryie Autosport and he has been very helpful in working to figure out the best solution for me. Once we have a definite plan I'll update. Thanks for your time so far Brian.

Until then, thanks for the ideas, compliments and the constructive criticism.

batboyvaj · 03-25-2015, 01:14 AM

Did you have a lightweight crank pulley installed?

BGTV8 · 03-25-2015, 03:32 AM

Quote:

Originally Posted by ValidusVentus

Yep, you're completely right on the oil temp, I guess it was creeping to 240 in that session (pretty much the only unobstructed laps I have ever driven on that track) but its interesting how on the same lap the motor goes, it goes up noticeably higher. Only oil temp data recording device I have is the video and my brain.

Rev limit unchanged, 7.5K.

80k on the engine. I would estimate 2500 track miles, and a lot more general hard driving miles. If I cant use the power I almost always run it in a higher gear around high G corners to reduce engine wear and oiling issues. I also try to warm my oil before I take the revs high. Apparently it wasn't enough.

Yes, I F'ed up not leaving the track immediately. Was kinda struggling to absorb that I just blew my engine (never done that before) and for some inane reason was trying to coast it back to avoid a tow until they meatball flagged me and I gave up. I know that's not a good reason. After I stopped the oil thing immediately occurred to me and I felt like a total douche.

Oh and the gloves... those are go-karting gloves I snagged at the go-kart track in Dubai. Work great lol. I do own a pair of SFI approved but seem silly to wear since I'm not in a suit. Tho unburnt hands would be better than burnt hands.

Back on the subject of the thread, I have been in contact with Brian at Valkryie Autosport and he has been very helpful in working to figure out the best solution for me. Once we have a definite plan I'll update. Thanks for your time so far Brian.

Until then, thanks for the ideas, compliments and the constructive criticism.

For the new build, please install an old-school mechanical oil pressure light switch (32psi should be commonly available) to a big red light in the cabin so if the oil pressure drops 'cos you have surge in the sump, then you can get out of the throttle to drop engine load and hopefully save the engine.

Alternative is AccuSump or Dailey dry-sump (and if Brian says they are 3.5K US I'm getting one - I was quoted 6K US$ 18 months ago, maybe because I am in OZ, I got the special "Export" price).

Spooler · 03-25-2015, 08:17 PM

Oops, someone put some marbles in the engine.... Ouch.

What kind of oil filter were you using? Amsoil oil filter have been known to let go at the o-ring gasket.

imjello · 03-25-2015, 10:58 PM

Quote:

Originally Posted by ENT-Z

I have been running this on my car for about 3 years now. I think it helps (no proof though).

mind me asking which kit you went with, and if your taking your z past 7.5k?

ssmoked · 03-26-2015, 12:45 AM

Quote:

Originally Posted by ValidusVentus

Yep, you're completely right on the oil temp, I guess it was creeping to 240 in that session (pretty much the only unobstructed laps I have ever driven on that track) but its interesting how on the same lap the motor goes, it goes up noticeably higher. Only oil temp data recording device I have is the video and my brain.

Rev limit unchanged, 7.5K.

80k on the engine. I would estimate 2500 track miles, and a lot more general hard driving miles. If I cant use the power I almost always run it in a higher gear around high G corners to reduce engine wear and oiling issues. I also try to warm my oil before I take the revs high. Apparently it wasn't enough.

Yes, I F'ed up not leaving the track immediately. Was kinda struggling to absorb that I just blew my engine (never done that before) and for some inane reason was trying to coast it back to avoid a tow until they meatball flagged me and I gave up. I know that's not a good reason. After I stopped the oil thing immediately occurred to me and I felt like a total douche.

Oh and the gloves... those are go-karting gloves I snagged at the go-kart track in Dubai. Work great lol. I do own a pair of SFI approved but seem silly to wear since I'm not in a suit. Tho unburnt hands would be better than burnt hands.

Back on the subject of the thread, I have been in contact with Brian at Valkryie Autosport and he has been very helpful in working to figure out the best solution for me. Once we have a definite plan I'll update. Thanks for your time so far Brian.

Until then, thanks for the ideas, compliments and the constructive criticism.

Any pictures of the blown motor? How much whp does your Z have?

ValidusVentus · 03-26-2015, 02:44 AM

Quote:

Originally Posted by batboyvaj

Did you have a lightweight crank pulley installed?

Nope. OEM

Quote:

Originally Posted by BGTV8

For the new build, please install an old-school mechanical oil pressure light switch... ...save the engine.

Alternative... ....."Export" price).

Best idea I've heard all day.

Quote:

Originally Posted by Spooler

Oops, someone put some marbles in the engine.... Ouch.

What kind of oil filter were you using? Amsoil oil filter have been known to let go at the o-ring gasket.

Purlator Pure One. The longer one.

Quote:

Originally Posted by ssmoked

Any pictures of the blown motor? How much whp does your Z have?

No pics yet. 310whp on a Dyno Dynamics as of 2 years ago.

carlitos_370z · 03-26-2015, 07:59 AM

Damn bro sorry to hear your story

I hope you can resolve soon and please let us know what happen with the engine... Im scared too when i hear this stories...

Robert Yuras · 03-26-2015, 09:36 AM

Quote:

Originally Posted by ValidusVentus

80k on the engine. I would estimate 2500 track miles, and a lot more general hard driving miles.

BRO! You should be

that you got that much out an engine you ran that hard. Being a driver/crew cheif in the road race field for so long man, I've been with teams that use up 2-3 motors A YEAR, with full blown race parts.

Get you a stock rebuilt low milage engine and get your butt back on the track dude!

Then start a penny fund for the next engine. These things just happen. Looks to me like the motor just said "I'm done". That's racing.

03-24-2015, 02:59 PM	#16 (permalink)
takjak2 A True Z Fanatic Join Date: Feb 2011 Location: Sterling, VA Posts: 1,922 Drives: Legit Racecar 370Z Rep Power: 142	ValidusVentus, we'd all like to know if you had Revs over 7500 and any oil temp data you might have. __________________ Mods \| Stuff \| Things \| Seat Time \| Nismo facebook.com/TeamSparrowSpeed

03-24-2015, 08:47 PM	#18 (permalink)
Japanjay Track Member Join Date: Mar 2012 Location: Puyallup Posts: 856 Drives: 09 Nissan 370z MB M6 Rep Power: 14	You can tell he has logged some seat time for sure, cut him slack on crossing the line twice. Not like he fuel starved, catastrophic gonna cost me a lot of money engine failure. **** happens just like at the drag strip. Track went down for 15-20 mins, a friend of mine was there. Also a M3 flipped on turn 8. ValidusVentus likes this. Last edited by Japanjay; 03-24-2015 at 09:00 PM.

03-24-2015, 10:03 PM	#20 (permalink)
Japanjay Track Member Join Date: Mar 2012 Location: Puyallup Posts: 856 Drives: 09 Nissan 370z MB M6 Rep Power: 14	Canton Racing Products - Accusump Tech Way cheaper than a Dry Sump system. A buddy just showed it to me. ValidusVentus likes this.

03-25-2015, 12:46 AM	#22 (permalink)
ValidusVentus Enthusiast Member Join Date: Jun 2011 Location: Washington State Posts: 400 Drives: #18 Z34 Rep Power: 23	Yep, you're completely right on the oil temp, I guess it was creeping to 240 in that session (pretty much the only unobstructed laps I have ever driven on that track) but its interesting how on the same lap the motor goes, it goes up noticeably higher. Only oil temp data recording device I have is the video and my brain. Rev limit unchanged, 7.5K. 80k on the engine. I would estimate 2500 track miles, and a lot more general hard driving miles. If I cant use the power I almost always run it in a higher gear around high G corners to reduce engine wear and oiling issues. I also try to warm my oil before I take the revs high. Apparently it wasn't enough. Yes, I F'ed up not leaving the track immediately. Was kinda struggling to absorb that I just blew my engine (never done that before) and for some inane reason was trying to coast it back to avoid a tow until they meatball flagged me and I gave up. I know that's not a good reason. After I stopped the oil thing immediately occurred to me and I felt like a total douche. Oh and the gloves... those are go-karting gloves I snagged at the go-kart track in Dubai. Work great lol. I do own a pair of SFI approved but seem silly to wear since I'm not in a suit. Tho unburnt hands would be better than burnt hands. Back on the subject of the thread, I have been in contact with Brian at Valkryie Autosport and he has been very helpful in working to figure out the best solution for me. Once we have a definite plan I'll update. Thanks for your time so far Brian. Until then, thanks for the ideas, compliments and the constructive criticism. __________________ Mods: Dedicated caged track car, lots of things. \|\|\| Valkyrie Autosport \|\|\| Last edited by ValidusVentus; 03-25-2015 at 01:15 AM.

03-25-2015, 08:17 PM	#25 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,801 Drives: 2013 Nismo 370z Rep Power: 2684392	Oops, someone put some marbles in the engine.... Ouch. What kind of oil filter were you using? Amsoil oil filter have been known to let go at the o-ring gasket. Last edited by Spooler; 03-25-2015 at 08:20 PM.

03-24-2015, 03:22 PM	#17 (permalink)
DR_ Track Member Join Date: Jul 2009 Location: Dallas Posts: 981 Drives: Touring/Sport M6 PG Rep Power: 17	On Porsches there is an over-rev counter and there are different tiers 1-6, level 1 being hitting rev limiter up to level 6 being 10k+ RPM money shift. I wonder if our ECU has anything.

03-25-2015, 01:14 AM	#23 (permalink)
batboyvaj Base Member Join Date: Jun 2011 Location: mn Posts: 111 Drives: 2011 370z Rep Power: 14	Did you have a lightweight crank pulley installed?

03-26-2015, 07:59 AM	#29 (permalink)
carlitos_370z A True Z Fanatic Join Date: Jul 2013 Location: Puerto Rico Posts: 7,157 Drives: 13 Nissan 370Z SP M6 Rep Power: 7586	Damn bro sorry to hear your story I hope you can resolve soon and please let us know what happen with the engine... Im scared too when i hear this stories... ValidusVentus likes this.

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