Surfdog's 09 journal

Rusty · 03-23-2018, 10:29 PM

Quote:

Originally Posted by SurfDog

Well believe it or not after relashing the heads there was still some engine noise (less noise but still..) coming out of my motor so I tore it down again and found another problem. Can you friggin’ believe it!!?!

Z1s Short block is eating itself.

According to two motor builders who have looked at it, either the wrist pins are too tight or the pistons are a bit undersized (or a bit of both I suspect).

Anyhow after about 200 miles of easy break in (with break in oil) check out these totally trashed cylinders... the groves are deep enough to feel with your eyes closed. Definitely not normal at all. This motor wouldn’t last an hour at full power I suspect. The pistons are rocking with the wrist pins not “floating” in the cylinders on the oil as they should. Also notice the high carbon buildup from excessive oil blow by. That should not be there after only 200 miles of break in style driving.

Sooo... I’ve pulled the motor (again... 3rd time) and sent Z1 their block back.

They are deciding what to do about it. (They did send a shipping label so that a start)

In the mean time as the motor is again totally apart, I sent the heads to MA Motorsports. Daelen there looked em over. He says the lash and overall head condition looks good now. (After relashing them into spec here in Denver). I figured a second very experienced set of eyes could not hurt before I bolt this f-er back together... hopefully for the last time.

Ug. This has sucked.

Had rebuilt a 400 ci Pontiac motor years ago. The cylinder walls looked like this after 500 mile break-in. Motor was making some weird noise. On tear down. Found that the ring ends was butting. And the ring coating was flaking off. Ring gap was set about .003" too tight.

sirnixalot · 03-21-2018, 01:03 PM

that sucks! Hope it all works out for you

Hotrodz · 03-21-2018, 02:08 PM

Quote:

Originally Posted by sirnixalot

that sucks! Hope it all works out for you

Agreed, WTO...Over!

Sent from my SM-N910P using Tapatalk

JARblue · 03-21-2018, 02:44 PM

Damn man, that blows

Hope third time is a charm for ya!

Rusty · 03-21-2018, 03:32 PM

You're having the worst luck with this rebuild.

makstraw · 03-21-2018, 09:13 PM

Holy crap! Glad it’s looking like Z1 is going to make it right, hopefully that process has a positive outcome. If not, please post about it. I quit using Z1 a couple years ago. Hopefully their customer service has improved.

SurfDog · 03-21-2018, 10:35 PM

I hope so too. I’ve been a great customer for Z1 I hope they do what they can to make it right. Pitching in on my tear down costs and sending a rebuild gasket kit would be appreciated (I’m on my 3d teardown for this rebuild!!)

SurfDog · 03-22-2018, 09:21 PM

In other news. Lots of progress over here:
Surfdog57's Gen 3 (#12) build journal.
https://r.tapatalk.com/shareLink?sha...1&share_type=t

Hotrodz · 03-22-2018, 11:18 PM

Quote:

Originally Posted by SurfDog

In other news. Lots of progress over here:
Surfdog57's Gen 3 (#12) build journal.
https://r.tapatalk.com/shareLink?sha...1&share_type=t

She is looking pretty dang nice!

Quicksilvers · 03-23-2018, 12:08 AM

Beautiful Z you have there very nice.

SurfDog · 03-23-2018, 10:05 PM

Z1 says all that cylinder wear is normal. They like how it’s built and are sending it back to me. They say they recommend I drop it back in and run it.

So in it goes. If it blows up I guess I’ll just drop in a Stock block. I’m out of ideas how to get this motor right. It’s been 9 months trying to rebuild and I guess I’m the to the point where I just have no idea how to get it right. I’m going to run it like it’s not FUBAR and hope for the best. I could have dropped in two Factory crate motors on what I’ve spent trying to get this build one running.

Bummer. Or maybe it’s fine. It still sounds like a bag of nickels when it runs though.

https://youtu.be/-s-qzpUA9aM

Rusty · 03-23-2018, 10:21 PM

Quote:

Originally Posted by SurfDog

Z1 says all that cylinder wear is normal. They like how it’s built and are sending it back to me. They say they recommend I drop it back in and run it.

So in it goes. If it blows up I guess I’ll just drop in a Stock block. I’m out of ideas how to get this motor right. It’s been 9 months trying to rebuild and I guess I’m the to the point where I just have no idea how to get it right. I’m going to run it like it’s not FUBAR and hope for the best. I could have dropped in two Factory crate motors on what I’ve spent trying to get this build one running.

Bummer. Or maybe it’s fine. It still sounds like a bag of nickels when it runs though.

https://youtu.be/-s-qzpUA9aM

Thinking it could be the cam profile on the exhaust. The shape of the ramps may not be noise friendly.

SurfDog · 03-23-2018, 10:22 PM

Quote:

Originally Posted by Rusty

Thinking it could be the cam profile on the exhaust. The shape of the ramps may not be noise friendly.

John wolf said it’s not normal to sound like that but like I say I’m going to run it and see what happens.

Sent from my iPhone using Tapatalk

ban25 · 03-26-2018, 12:41 PM

What does it sound like from in the cabin? Here’s a video of mine:

https://youtu.be/iNtDhwGo2mE

SurfDog · 03-27-2018, 02:36 AM

I’m planning to build it up piece by piece on the test stand. I’ll spin it until we chase down the source.

03-21-2018, 01:03 PM	#2 (permalink)
sirnixalot Track Member Join Date: May 2017 Location: Cayman Islands Posts: 685 Drives: 2010 370Z Rep Power: 57455	that sucks! Hope it all works out for you __________________ 2010 Sport - LS3 swap loading 2012 Frontier - BTWTuning VK56DE swap

03-21-2018, 02:44 PM	#4 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 44 Posts: 36,450 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684441	Damn man, that blows Hope third time is a charm for ya! __________________ 2011 370Z 6MT Sport Gun Metallic \| ARC \| CJM \| Ecutek \| FI \| Fujimura \| R2C \| SPL \| Stillen \| TWM \| Z1 \| ZSpeed \|

03-21-2018, 03:32 PM	#5 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 69 Posts: 35,558 Drives: 2011 Nismo GM 6M Rep Power: 2684439	You're having the worst luck with this rebuild. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

03-21-2018, 09:13 PM	#6 (permalink)
makstraw Enthusiast Member Join Date: Oct 2012 Location: Ft Walton beach FL Posts: 446 Drives: 09 Black 370z Sport Rep Power: 13	Holy crap! Glad it’s looking like Z1 is going to make it right, hopefully that process has a positive outcome. If not, please post about it. I quit using Z1 a couple years ago. Hopefully their customer service has improved. __________________ \|ARK\|STILLEN G3\|BC\|FORGESTAR\|GARAGELINE\|QUAIFE\|

03-21-2018, 10:35 PM	#7 (permalink)
SurfDog A True Z Fanatic Join Date: May 2012 Location: Colorado (9000 feet) Age: 57 Posts: 1,796 Drives: 09 6mt, 13 Sequoia, Rep Power: 15750	I hope so too. I’ve been a great customer for Z1 I hope they do what they can to make it right. Pitching in on my tear down costs and sending a rebuild gasket kit would be appreciated (I’m on my 3d teardown for this rebuild!!) __________________ 09 6spd Berk CBE, JWT cams, ZSpeed CSC, Stillen (25 row oil, brake cooling, sways, gen3 CAI), Passport (9500ci), Quaife LSD, Z1 400 hp kit, ss lines, pads, rotors, clutch etc, Phunk's pan and fuel starve fix

03-22-2018, 09:21 PM	#8 (permalink)
SurfDog A True Z Fanatic Join Date: May 2012 Location: Colorado (9000 feet) Age: 57 Posts: 1,796 Drives: 09 6mt, 13 Sequoia, Rep Power: 15750	In other news. Lots of progress over here: Surfdog57's Gen 3 (#12) build journal. https://r.tapatalk.com/shareLink?sha...1&share_type=t __________________ 09 6spd Berk CBE, JWT cams, ZSpeed CSC, Stillen (25 row oil, brake cooling, sways, gen3 CAI), Passport (9500ci), Quaife LSD, Z1 400 hp kit, ss lines, pads, rotors, clutch etc, Phunk's pan and fuel starve fix

03-23-2018, 12:08 AM	#10 (permalink)
Quicksilvers A True Z Fanatic Join Date: May 2017 Location: Atlanta, GA Posts: 2,038 Drives: 2017 370z Rep Power: 25464	Beautiful Z you have there very nice.

03-23-2018, 10:05 PM	#11 (permalink)
SurfDog A True Z Fanatic Join Date: May 2012 Location: Colorado (9000 feet) Age: 57 Posts: 1,796 Drives: 09 6mt, 13 Sequoia, Rep Power: 15750	Surfdog's 09 journal Z1 says all that cylinder wear is normal. They like how it’s built and are sending it back to me. They say they recommend I drop it back in and run it. So in it goes. If it blows up I guess I’ll just drop in a Stock block. I’m out of ideas how to get this motor right. It’s been 9 months trying to rebuild and I guess I’m the to the point where I just have no idea how to get it right. I’m going to run it like it’s not FUBAR and hope for the best. I could have dropped in two Factory crate motors on what I’ve spent trying to get this build one running. Bummer. Or maybe it’s fine. It still sounds like a bag of nickels when it runs though. https://youtu.be/-s-qzpUA9aM __________________ 09 6spd Berk CBE, JWT cams, ZSpeed CSC, Stillen (25 row oil, brake cooling, sways, gen3 CAI), Passport (9500ci), Quaife LSD, Z1 400 hp kit, ss lines, pads, rotors, clutch etc, Phunk's pan and fuel starve fix Last edited by SurfDog; 03-23-2018 at 10:16 PM.

03-26-2018, 12:41 PM	#14 (permalink)
ban25 Enthusiast Member Join Date: Nov 2009 Location: SF, CA Posts: 339 Drives: 17 C7 Z06 M7 Rep Power: 66	What does it sound like from in the cabin? Here’s a video of mine: https://youtu.be/iNtDhwGo2mE __________________ 2017 Corvette Z06 7MT \| 1LE \| Stage 3 \| DSCSport

03-27-2018, 02:36 AM	#15 (permalink)
SurfDog A True Z Fanatic Join Date: May 2012 Location: Colorado (9000 feet) Age: 57 Posts: 1,796 Drives: 09 6mt, 13 Sequoia, Rep Power: 15750	I’m planning to build it up piece by piece on the test stand. I’ll spin it until we chase down the source. __________________ 09 6spd Berk CBE, JWT cams, ZSpeed CSC, Stillen (25 row oil, brake cooling, sways, gen3 CAI), Passport (9500ci), Quaife LSD, Z1 400 hp kit, ss lines, pads, rotors, clutch etc, Phunk's pan and fuel starve fix

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