valve seals going up and DOWN!!! - Team Camaro Tech
Engine General Engine Discussion.

 
LinkBack Thread Tools Display Modes
post #1 of 6 (permalink) Old Feb 5th, 08, 12:25 PM Thread Starter
Senior Tech
robert
 
rolling-robert's Avatar
 
Join Date: May 2002
Location: netherlands/waddinxveen
Posts: 1,114
valve seals going up and DOWN!!!

hi,

i rebuilt a pair of 461 heads (port work, 64cc 1.94/1.5)) with new springs from Crane, new valves and valve seals.

put them on the 355ci (see signature)

the exhaust gas hurt my eyes so i thought it was running too rich, well it doesnt.
the plugs are all fouled (sooty black).

i pulled the heads and noticed lots of carbon buildup and i noticed all the valve seals are half way or even all the way up the valve stems !!!

the springs have smaller springs inside them, i think that the smaller springs pull up the valve seals!!!

are they the wrong kind of seals? i cant just pull the smaller springs out and drive it that way, can i?

How can i make sure those seals stay down!?!

btw: now i have pulled the heads, i will build them on my new 383 with 10.8-1 , 10.9-1 compression and 216/216 .454/.454 flattapet cam.

will it work, i will use 95 or 98 fuel.

thank you.

Z28 1984
'77 355ci/COMP cam 218/224 .464/.470 114 LSA
rollerrockers1.5/9.72 forged pistons
ported '66 461 heads 1.94,1.5/Flowtech shorty headers
edelbrock 600/performer rpm intake
th350/shiftkit/hughes2500stall
4th gen 3.23 10 bolt POSI.
rolling-robert is offline  
Sponsored Links
Advertisement
 
post #2 of 6 (permalink) Old Feb 5th, 08, 01:59 PM
Gold Lifetime Member
Don
 
Join Date: Jan 2005
Location: 2 Dog Town in West Texas
Posts: 11,154
Re: valve seals going up and DOWN!!!

Hopefully your valve guide bosses were milled down to correct id for those seals. There are two sizes that I know of , .500 and .530 . You inner spring should have enough id. to clear these, if not, you may have to change springs. You did not say what type of seal you had or part # of spring. Most of these seals have some type of retention band on the body.

Don
TC # 349
Zdld17:69 Z/RS,306, NOR141111, 9N554XXX, 12A, X3G, 59/59,723, AFR 195,CCC282/290HR, TKO 600, BU1122B1E Owner since Dec 1968

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
zdld17 is offline  
post #3 of 6 (permalink) Old Feb 5th, 08, 02:36 PM
Senior Tech
Chad
 
67 Plum's Avatar
 
Join Date: Jan 2003
Location: Thomasville,Ga.
Posts: 4,386
Re: valve seals going up and DOWN!!!

The umbrella seals dont fit on the guide they are just tight on the valve stem and move up and down with the valve.Exhaust gas smell and sooty black plugs would be rich carb. not valve seals.

67 Plum Mist Met. 408 TH350 3.08 posi
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
67 Plum is offline  
 
post #4 of 6 (permalink) Old Feb 5th, 08, 11:31 PM Thread Starter
Senior Tech
robert
 
rolling-robert's Avatar
 
Join Date: May 2002
Location: netherlands/waddinxveen
Posts: 1,114
Re: valve seals going up and DOWN!!!

so its normal?

after 200 miles everything is covered in a dry, black substance...!?!

Z28 1984
'77 355ci/COMP cam 218/224 .464/.470 114 LSA
rollerrockers1.5/9.72 forged pistons
ported '66 461 heads 1.94,1.5/Flowtech shorty headers
edelbrock 600/performer rpm intake
th350/shiftkit/hughes2500stall
4th gen 3.23 10 bolt POSI.
rolling-robert is offline  
post #5 of 6 (permalink) Old Feb 6th, 08, 05:13 AM
Senior Tech
Kyle
 
Join Date: Mar 2004
Location: Springfield, Va
Posts: 538
Re: valve seals going up and DOWN!!!

It's not normal .. your engine is running rich

1969 Z/28 CLONE 350
4 SPD MUNCIE,
4 WHEEL DISK BRAKES,
4:11 POSI
BLUE W/WHITE STRIPES


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
GreyShadows is offline  
post #6 of 6 (permalink) Old Feb 6th, 08, 11:45 AM Thread Starter
Senior Tech
robert
 
rolling-robert's Avatar
 
Join Date: May 2002
Location: netherlands/waddinxveen
Posts: 1,114
Re: valve seals going up and DOWN!!!

i tried 2 brand new carbs, 750 and 600 edelbrock, the 600is running perfect on a stock 305 so is the 750.

the black stuff is so thick i can scrape it of with my finger nail.

Z28 1984
'77 355ci/COMP cam 218/224 .464/.470 114 LSA
rollerrockers1.5/9.72 forged pistons
ported '66 461 heads 1.94,1.5/Flowtech shorty headers
edelbrock 600/performer rpm intake
th350/shiftkit/hughes2500stall
4th gen 3.23 10 bolt POSI.
rolling-robert is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Team Camaro Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address.
NOTE we receive a lot of registrations with bad email addresses. IF you do not receive your confirmation email you will not be able to post. contact support and we will try and help.
Be sure you enter a valid email address and check your spam folder as well.



Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may 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

 
For the best viewing experience please update your browser to Google Chrome