4th Generation Maxima (1995-1999) Visit the 4th Generation forum to ask specific questions or find out more about the 4th Generation Maxima.

Disassembling cylinder heads?

Thread Tools
 
Search this Thread
 
Old Jun 1, 2008 | 03:01 PM
  #1  
MOHFpro90's Avatar
Thread Starter
Senior Member
iTrader: (11)
 
Joined: Aug 2006
Posts: 4,705
From: Sunshine State
Disassembling cylinder heads?

Would anyone like to fill me in on how to disassemble everything in the cylinder head? I.e. Removing the springs, valves, etc? I looked in the FSM, searched, and asked a few people on aim. Got nothing. Anyone wanna help?
Old Jun 1, 2008 | 03:05 PM
  #2  
alset2's Avatar
Senior Member
iTrader: (1)
 
Joined: Apr 2008
Posts: 337
From: Ocala Fl.
DAYTONA!!! my old stommpin grounds..anyway what exactly is it you want to know? are you stripping it down to do a valve grind or something? or are you asking how to remove the valves ???
Old Jun 1, 2008 | 03:10 PM
  #3  
MOHFpro90's Avatar
Thread Starter
Senior Member
iTrader: (11)
 
Joined: Aug 2006
Posts: 4,705
From: Sunshine State
Yeah I am trying to find out how to remove the valves, springs, etc...


Good to see a local. How long ago were you in daytona?
Old Jun 1, 2008 | 03:23 PM
  #4  
alset2's Avatar
Senior Member
iTrader: (1)
 
Joined: Apr 2008
Posts: 337
From: Ocala Fl.
grew up in deland and moved over to db in 1999,then moved over here to slowcala about 4 years ago...
anyway about the valves... you can ren a valve spring compresser tool from autozone or (I am assuming you have the heads off the car) to get them off take a deep well socket that will fit over the valve stem and keepers(the things that lock the valve stem to the top of the spring) probably a 14 mm should work...place it over the center of the valve spring so that the opening straddles the actual valve stem, and hit it with a hammer .this does two thing simultainiously,first it pushes the spring down faster than the valve and 2nd ,the vibration will knock the keepers out of place so you can disassemble it. some times it takes a few quick hits to get it but it works.'
...damn, i hope that makes since
be careful not to lose the keepers ,they are kinda small, there are 2 per valve
Old Jun 1, 2008 | 03:24 PM
  #5  
G4nismo's Avatar
Senior Member
iTrader: (9)
 
Joined: Jan 2005
Posts: 3,683
From: Columbia, SC
uh oh kyle. if wanna be faster than dandy, you better read up and know how to do this
Old Jun 1, 2008 | 03:40 PM
  #6  
alset2's Avatar
Senior Member
iTrader: (1)
 
Joined: Apr 2008
Posts: 337
From: Ocala Fl.
Originally Posted by MOHFpro90
Yeah I am trying to find out how to remove the valves, springs, etc...


Good to see a local. How long ago were you in daytona?

HEy i see you're into r/c cars, do ou race out at the track...where is that ...strickland softball fields I think it is???
Old Jun 1, 2008 | 04:04 PM
  #7  
pmohr's Avatar
No more Maximas...
iTrader: (26)
 
Joined: Jul 2005
Posts: 14,329
From: Oak Ridge, TN
Originally Posted by MOHFpro90
Would anyone like to fill me in on how to disassemble everything in the cylinder head? I.e. Removing the springs, valves, etc? I looked in the FSM, searched, and asked a few people on aim. Got nothing. Anyone wanna help?
Compress the springs, remove the keepers, everything slides out.

Should be fairly simple if you take a look at it
Old Jun 1, 2008 | 06:42 PM
  #8  
MOHFpro90's Avatar
Thread Starter
Senior Member
iTrader: (11)
 
Joined: Aug 2006
Posts: 4,705
From: Sunshine State
Thanks for the help. I figured I would need a compressor for the springs, I just wasnt sure of the process for removal.


Alset, I was into R/c, however the only thing that is currently running is the electric 4tec, and I havent even used it in 2 months...haha. Ive never been racing, I guess I just get enough out of the pavement up and down my street.
Old Jun 3, 2008 | 06:46 PM
  #9  
MOHFpro90's Avatar
Thread Starter
Senior Member
iTrader: (11)
 
Joined: Aug 2006
Posts: 4,705
From: Sunshine State
Alright so the valves, springs etc are out. alset, your method worked great, easy as pie. I owe you.


Now...I cant get the valve guides out. The FSM says that they should be driven out...well yeay I tried that, and they are so brittle, they shattered. Is there a trick to it?
Old Jun 4, 2008 | 03:42 AM
  #10  
alset2's Avatar
Senior Member
iTrader: (1)
 
Joined: Apr 2008
Posts: 337
From: Ocala Fl.
Originally Posted by MOHFpro90
Alright so the valves, springs etc are out. alset, your method worked great, easy as pie. I owe you.


Now...I cant get the valve guides out. The FSM says that they should be driven out...well yeay I tried that, and they are so brittle, they shattered. Is there a trick to it?
good man ,glad that helped, anyway about the valve guides, I wopuld go ahead and take it to a machine shop for that...its worth it.but if you continue to work at it be careful not to damage the mating surface where the guide slides into the head.
some ideas are... try to find a socket that is a little smaller in diameter than the valve guide and drive it out that way...could use a punch...

ok once again I would recomend taking it down to a shop and letting them press them out. and back in for that matter.
hope this helps
Old Jun 4, 2008 | 08:50 AM
  #11  
MOHFpro90's Avatar
Thread Starter
Senior Member
iTrader: (11)
 
Joined: Aug 2006
Posts: 4,705
From: Sunshine State
Thanks for the reply. The guides themselves are trash, new ones are definitely going in. So keeping the stockers in good condition are not a problem. But as you said, keeping the heads in good condition is a must.

I have a friend who own a shop and Ive talked to about working with him, so I might take them to him and see if he can do anything. If not, there is a Crane Cams shop somewhere in town.
Old Jun 4, 2008 | 01:07 PM
  #12  
alset2's Avatar
Senior Member
iTrader: (1)
 
Joined: Apr 2008
Posts: 337
From: Ocala Fl.
Originally Posted by MOHFpro90
Thanks for the reply. The guides themselves are trash, new ones are definitely going in. So keeping the stockers in good condition are not a problem. But as you said, keeping the heads in good condition is a must.

I have a friend who own a shop and Ive talked to about working with him, so I might take them to him and see if he can do anything. If not, there is a Crane Cams shop somewhere in town.

you might want to look in the phone book for machine shops, it would be a lot cheaper than crane cams. im not usre but I think car quest over on mason does machine work ,and if not ,they will know of someone.they are pretty good people at that store.
or if you want to take it over to Deland ...theres Autometrics, I used to work there,they are real good ...and I could probably put in a good word.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
jmlee44
4th Generation Maxima (1995-1999)
8
Oct 2, 2022 02:13 PM
My Coffee
New Member Introductions
15
Jun 6, 2017 02:01 PM
knight_yyz
5th Generation Classifieds (2000-2003)
12
Nov 1, 2015 01:34 PM
jaydot901
7th Generation Maxima (2009-2015)
9
Sep 29, 2015 01:18 PM




All times are GMT -7. The time now is 12:45 PM.