Nissan 370Z Forum  

Cylinder heads

I just picked up my cylinder heads from the machine shop. Had to replace mine because the cam journals were real bad. Any how the did a great job! My

Go Back   Nissan 370Z Forum > Tech Area > Engine & Drivetrain

Like Tree10Likes
  • 1 Post By Z_ealot
  • 2 Post By Elmo370z
  • 2 Post By madwi
  • 4 Post By scroupious
  • 1 Post By INFmstrTech

Reply
 
LinkBack Thread Tools Display Modes
Old 03-09-2020, 01:59 PM   #1 (permalink)
Premium Member
 
Join Date: Aug 2019
Location: IOWA
Posts: 20
Drives: 2009 370Z
Rep Power: 1
scroupious is on a distinguished road
Default Cylinder heads

I just picked up my cylinder heads from the machine shop. Had to replace mine because the cam journals were real bad.
Any how the did a great job! My question is the took the entire rocker cradle apart and cleaned ever thing before they set all the valves.
Do I need to worry about it now since the manual says not to remove the black bolts?

Very reputable shop that specializes in cylinder heads.
scroupious is offline   Reply With Quote
Old 03-10-2020, 10:46 PM   #2 (permalink)
A True Z Fanatic
 
Z_ealot's Avatar
 
Join Date: Sep 2010
Location: Albuquerque, NM
Posts: 1,988
Drives: 09 370Z Touring/Sprt
Rep Power: 18
Z_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond reputeZ_ealot has a reputation beyond repute
Default

Quote:
Originally Posted by scroupious View Post
I just picked up my cylinder heads from the machine shop. Had to replace mine because the cam journals were real bad.
Any how the did a great job! My question is the took the entire rocker cradle apart and cleaned ever thing before they set all the valves.
Do I need to worry about it now since the manual says not to remove the black bolts?

Very reputable shop that specializes in cylinder heads.
If i remember right, you have to get the vvel motor recalibrated after you do that, i could be remembering wrong though
scroupious likes this.
Z_ealot is online now   Reply With Quote
Old 03-11-2020, 09:17 PM   #3 (permalink)
Premium Member
 
Join Date: Aug 2019
Location: IOWA
Posts: 20
Drives: 2009 370Z
Rep Power: 1
scroupious is on a distinguished road
Default

Ok, I will look into that. Thank you for the info!
scroupious is offline   Reply With Quote
Old 03-11-2020, 10:46 PM   #4 (permalink)
A True Z Fanatic
 
Join Date: Apr 2013
Location: st. petersburg
Posts: 4,104
Drives: 09 nissan 370z Sp M6
Rep Power: 30052
Elmo370z has a reputation beyond reputeElmo370z has a reputation beyond reputeElmo370z has a reputation beyond reputeElmo370z has a reputation beyond reputeElmo370z has a reputation beyond reputeElmo370z has a reputation beyond reputeElmo370z has a reputation beyond reputeElmo370z has a reputation beyond reputeElmo370z has a reputation beyond reputeElmo370z has a reputation beyond reputeElmo370z has a reputation beyond repute
Default

Quote:
Originally Posted by scroupious View Post
I just picked up my cylinder heads from the machine shop. Had to replace mine because the cam journals were real bad.
Any how the did a great job! My question is the took the entire rocker cradle apart and cleaned ever thing before they set all the valves.
Do I need to worry about it now since the manual says not to remove the black bolts?

Very reputable shop that specializes in cylinder heads.
Guess itís not such a reputable shop after all your heads are trash unless you can find a intact vvel girdle. I would make them buy me a new set of heads. Reason why nissan said donít touch the Black bolts
JARblue and scroupious like this.
Elmo370z is offline   Reply With Quote
Old 03-11-2020, 11:26 PM   #5 (permalink)
A True Z Fanatic
 
madwi's Avatar
 
Join Date: Sep 2012
Location: West Michigan
Posts: 27,635
Drives: Granma red Z
Rep Power: 2684417
madwi has a reputation beyond reputemadwi has a reputation beyond reputemadwi has a reputation beyond reputemadwi has a reputation beyond reputemadwi has a reputation beyond reputemadwi has a reputation beyond reputemadwi has a reputation beyond reputemadwi has a reputation beyond reputemadwi has a reputation beyond reputemadwi has a reputation beyond reputemadwi has a reputation beyond repute
Default

Quote:
Originally Posted by Elmo370z View Post
Guess it’s not such a reputable shop after all your heads are trash unless you can find a intact vvel girdle. I would make them buy me a new set of heads. Reason why nissan said don’t touch the Black bolts
Elmo370z and elhombre like this.
madwi is offline   Reply With Quote
Old 04-14-2020, 09:13 PM   #6 (permalink)
Premium Member
 
Join Date: Aug 2019
Location: IOWA
Posts: 20
Drives: 2009 370Z
Rep Power: 1
scroupious is on a distinguished road
Default

Just a follow up. I have the heads installed with JWT C2 camshafts and many other fun things but car seems to be working great! It needs to get tuned and I will follow up after that.

Thanks
Rusty, hc_416, elhombre and 1 others like this.
scroupious is offline   Reply With Quote
Old 04-16-2020, 01:53 PM   #7 (permalink)
Base Member
 
INFmstrTech's Avatar
 
Join Date: Nov 2018
Location: Near Frisco, TX
Age: 34
Posts: 14
Drives: 08coupe, 07sedan
Rep Power: 3357
INFmstrTech has a reputation beyond reputeINFmstrTech has a reputation beyond reputeINFmstrTech has a reputation beyond reputeINFmstrTech has a reputation beyond reputeINFmstrTech has a reputation beyond reputeINFmstrTech has a reputation beyond reputeINFmstrTech has a reputation beyond reputeINFmstrTech has a reputation beyond reputeINFmstrTech has a reputation beyond reputeINFmstrTech has a reputation beyond reputeINFmstrTech has a reputation beyond repute
Default

Quote:
Originally Posted by scroupious View Post
I just picked up my cylinder heads from the machine shop. Had to replace mine because the cam journals were real bad.
Any how the did a great job! My question is the took the entire rocker cradle apart and cleaned ever thing before they set all the valves.
Do I need to worry about it now since the manual says not to remove the black bolts?

Very reputable shop that specializes in cylinder heads.
To be honest I wouldnít worry. Iíve purposely have done this to see what happened-nothing abnormal. Now hereís why, the black bolts circled in yellow essentially just hold the driveshaft-yes this what itís called.. to the VVEL ladder, the black nut looking things are actually a point of adjustment for the intake valves controlling the actual lift of the valve (each nut controls 2 valves) think of it as a Throttle position adjustment screw-slight amounts can make big changes, they are set at the factory. If the valves were set correctly when the heads were put back together then I wouldnít bat an eye about it. They probably marked where the nut was set before disassembly.
P.S. I also have the JWT C2 cams.
Attached Images
File Type: jpg 2E4E3381-2B1D-42DC-A0DF-34ADE2FFAA76.jpg (285.5 KB, 15 views)
scroupious likes this.
__________________
Ď08 coupe w/Stillen SC, Custom A2A, SD, ID1050x, e85, eagle rods, high temp coated pistons, P&P heads, JWT C2, manual swap, stage 2 clutch. EcuTek(Eugene)
INFmstrTech is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
[FOR SALE] Vhr cylinder heads!!! Elmo370z Parts for sale (Private Classifieds) 60 12-14-2018 04:13 PM
Cylinder heads Elmo370z Engine & Drivetrain 7 07-19-2018 01:46 AM
[FOR SALE] Cylinder heads Elmo370z Parts for sale (Private Classifieds) 22 06-21-2018 01:18 PM
cylinder heads lightw8 370z Engine & Drivetrain 3 06-19-2017 10:55 PM
cylinder heads avery370z Intake/Exhaust 7 12-09-2014 06:23 PM


All times are GMT -5. The time now is 06:43 PM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 PL2