Possible oil pump failure but it may have been the crank - Page 3

KingLT1 · 12-14-2019, 09:09 AM

It's just a term...meaning good deal on the crank. Put it together and "send it" down the track. lol

laynlo15 · 12-14-2019, 09:21 AM

I'm dropping it by my engine builder so he can look at the journal the stuck a bearing. May not be usable and if not I'll buy a new GM Lt4 crank. Yes send it means the same to me, just didn't catch it on the crank.

laynlo15 · 12-17-2019, 09:36 AM

In this new build (again) I'm hoping to do the DSX low side so I can run some E and race fuel or possibly race fuel/93 or some form of that. I spent over 1000 bucks this year just on VP MS109 and probably a little less last year since I hurt the motor in July at the 2018 Camaro Fest. Just going to a different option on fuel will help pay for the DSX setup. Almost ready to pull the motor, just have a couple hours or less to unbolt a couple more things and pull the valley cover and put the lift plate on in place of the VC. Pretty much everything else is off. Then the tear down.

ramairroughneck · 12-17-2019, 12:10 PM

Sorry for your loss. You have really achieved a lot. I certainly appreciate what you have been able to do up to this point. Moving forward best of luck pushing even harder. I’m sure the next combo will allow even better times. Keep it going

laynlo15 · 12-17-2019, 12:38 PM

Thanks man, its kinda all up in the air right now till we get it apart. May not push to hard this year and just be happy to come home from the track and not to have had any issues. That would feel good.

asthmamax11 · 12-20-2019, 11:57 AM

Really sorry to hear of this misfortune. I had a brand new oil pump fail on my LS1 Trans Am. Horrible feeling seeing that oil pressure drop
Thanks for contributing knowledge and experience on the forums. We're all kinda in uncharted territory with these newer GM engines. Takes alot of guts to explore the limits

laynlo15 · 12-20-2019, 02:23 PM

Your welcome, I didn't see it drop as I was making a pass when I happened looking straight head. Didn't realize what had occurred till I look at the log after it went into limp mode. Did you get you issue fixed?

asthmamax11 · 12-23-2019, 04:46 PM

Quote:

Originally Posted by laynlo15

Your welcome, I didn't see it drop as I was making a pass when I happened looking straight head. Didn't realize what had occurred till I look at the log after it went into limp mode. Did you get you issue fixed?

Yes thankfully. Car is running great now.

laynlo15 · 12-23-2019, 05:31 PM

Good to hear.

oldman · 12-24-2019, 03:06 PM

I really don't like this new variable pressure pump, it is just a bunch of sliding metal rectangles with cheezy plastic guide and spring..... I want a new billet rotor old fashion pump please...

laynlo15 · 12-24-2019, 03:28 PM

Katech has a pump for these Lt1's I've heard. I haven't looked them up yet but probably will once I decide what I'm actually doing.

L78toLT1 · 12-24-2019, 09:32 PM

Quote:

Originally Posted by oldman

I really don't like this new variable pressure pump, it is just a bunch of sliding metal rectangles with cheezy plastic guide and spring..... I want a new billet rotor old fashion pump please...

I second the shit out of this, Oldman.

laynlo15 · 12-25-2019, 07:54 AM

I have to look and see if the tensioner or chain actually rubbed a hole in the pump as the GM bulletin claims may happen.

L78toLT1 · 12-25-2019, 08:07 AM

Check out the oil pump failure poll in the ZL1 section - I'd insert the link if I could figure out how to do it. There are thirty something reported failures and several pics. It seems that most, if not all failed when the outer portion of the pump cracked at the pivot point. The cross section is very thin in that region - definitely a stress riser.

12-14-2019, 09:09 AM	#29
KingLT1 Drives: 2016 1SS NFG A8 Join Date: Aug 2017 Location: 46804 Posts: 7,661	It's just a term...meaning good deal on the crank. Put it together and "send it" down the track. lol __________________ 2016 NFG SS A8/Whipple 2.9/Fuel System/Flex Fuel

12-20-2019, 11:57 AM	#34
asthmamax11 Drives: 1SS Summit White 6 speed Join Date: Jul 2017 Location: Gainesville GA Posts: 582	Really sorry to hear of this misfortune. I had a brand new oil pump fail on my LS1 Trans Am. Horrible feeling seeing that oil pressure drop Thanks for contributing knowledge and experience on the forums. We're all kinda in uncharted territory with these newer GM engines. Takes alot of guts to explore the limits __________________ 16 1SS M6 White Magnuson 2.3 Heartbeat Roto Fab Solo Performance Cat deletes and Axleback Hurst short shifter #'s coming soon Riaction coilovers 1LE sway bars BMR mm BMR chassis brace Flow one 19" wheels wrapped in Mickey Thompsons 02 Z28 M6 35th anniversary 80k miles T-tops Leather Bolt ons Joy to drive this classic every day! Daily Driver

12-24-2019, 03:06 PM	#38
oldman Drives: SS 6 speed of course Join Date: Jan 2016 Location: Hilo, HI Posts: 4,346	I really don't like this new variable pressure pump, it is just a bunch of sliding metal rectangles with cheezy plastic guide and spring..... I want a new billet rotor old fashion pump please... __________________ Forged short block, large duration sub .600 lift Cam Motion cam, 7200 RPM fuel cut, Pray Ported Heads, 3.85 pulley D1X, stage II intercooler, DSX secondary low side, DSX E85 sensor, Lingenfelter big bore 2.0 pump, ported front cats, 60608 Borla, LT4 injectors, ZL1 1LE driveshaft and Katech ported TB, ported MSD intake, BTR valvetrain, ARP studs, ProFlow valves, PS4 tires.

12-24-2019, 03:28 PM	#39
laynlo15 Drives: 2022 Lt1 A10 Join Date: Nov 2015 Location: clark, mo Posts: 8,882	Katech has a pump for these Lt1's I've heard. I haven't looked them up yet but probably will once I decide what I'm actually doing. Last edited by laynlo15; 12-24-2019 at 04:18 PM.

12-25-2019, 08:07 AM	#42
L78toLT1 Drives: Hyper Blue 2016 2SS 6M Join Date: Sep 2017 Location: North Ga Posts: 1,810	Check out the oil pump failure poll in the ZL1 section - I'd insert the link if I could figure out how to do it. There are thirty something reported failures and several pics. It seems that most, if not all failed when the outer portion of the pump cracked at the pivot point. The cross section is very thin in that region - definitely a stress riser. __________________ Baby Blue 2016 Hyper Blue 2SS/6m/MRC/NPP/Silver Rally stripes/ZL1 wheels & brakes/GForce DS and axles/ZLE Cradle Bushings/FE4 ARB front & rear/SEMA Grill/Rotofab dry/95mm TB/Magnuson 2300/Full LT4 fuel system/JMS boost-a-pump/E85 Sensor/Ported CID heads from LME/Cammotion PD cam/Thompson Motorsports forged shortblock/catted Kooks 1 7/8 headers /JRE remote tuned

12-14-2019, 09:21 AM	#30
laynlo15 Drives: 2022 Lt1 A10 Join Date: Nov 2015 Location: clark, mo Posts: 8,882	I'm dropping it by my engine builder so he can look at the journal the stuck a bearing. May not be usable and if not I'll buy a new GM Lt4 crank. Yes send it means the same to me, just didn't catch it on the crank.

12-17-2019, 09:36 AM	#31
laynlo15 Drives: 2022 Lt1 A10 Join Date: Nov 2015 Location: clark, mo Posts: 8,882	In this new build (again) I'm hoping to do the DSX low side so I can run some E and race fuel or possibly race fuel/93 or some form of that. I spent over 1000 bucks this year just on VP MS109 and probably a little less last year since I hurt the motor in July at the 2018 Camaro Fest. Just going to a different option on fuel will help pay for the DSX setup. Almost ready to pull the motor, just have a couple hours or less to unbolt a couple more things and pull the valley cover and put the lift plate on in place of the VC. Pretty much everything else is off. Then the tear down.

12-17-2019, 12:10 PM	#32
ramairroughneck Drives: 2018 Camaro SS Join Date: Sep 2009 Location: Oklahoma Posts: 247	Sorry for your loss. You have really achieved a lot. I certainly appreciate what you have been able to do up to this point. Moving forward best of luck pushing even harder. I’m sure the next combo will allow even better times. Keep it going

12-17-2019, 12:38 PM	#33
laynlo15 Drives: 2022 Lt1 A10 Join Date: Nov 2015 Location: clark, mo Posts: 8,882	Thanks man, its kinda all up in the air right now till we get it apart. May not push to hard this year and just be happy to come home from the track and not to have had any issues. That would feel good.

12-20-2019, 02:23 PM	#35
laynlo15 Drives: 2022 Lt1 A10 Join Date: Nov 2015 Location: clark, mo Posts: 8,882	Your welcome, I didn't see it drop as I was making a pass when I happened looking straight head. Didn't realize what had occurred till I look at the log after it went into limp mode. Did you get you issue fixed?

12-23-2019, 05:31 PM	#37
laynlo15 Drives: 2022 Lt1 A10 Join Date: Nov 2015 Location: clark, mo Posts: 8,882	Good to hear.

12-25-2019, 07:54 AM	#41
laynlo15 Drives: 2022 Lt1 A10 Join Date: Nov 2015 Location: clark, mo Posts: 8,882	I have to look and see if the tensioner or chain actually rubbed a hole in the pump as the GM bulletin claims may happen.

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