corsasport.co.uk
  Not logged in [Login - Register]  
You Are Not Registered Or Not Logged In  

Corsa Sport » Message Board » Help Zone, Modification and ICE Advice » oil stem seals


New Topic
New Poll 		  <<  1    2  >> Subscribe | Add to Favourites

You are not logged in and may not post or reply to messages. Please log in or create a new account or mail us about fixing an existing one - register@corsasport.co.uk

There are also many more features available when you are logged in such as private messages, buddy list, location services, post search and more.


Author oil stem seals
Fraser Young
Member
Registered: 26th Dec 02
Location: Dundee City Drives: 58 Impreza WRX
User status: Offline
15th Dec 04 at 21:42   View User's Profile U2U Member Reply With Quote
I know a few of the guys on here have had theirs replaced...
How much work does it involve etc. On my C16xe, burns quite a steady amount of oil, not huge clouds, but a wee bit on acceleration always been meaning to do something about it...

cheers -f
lee mitchell
Member
Registered: 26th Jan 01
Location: kent...drive's: eveyones conversion cars hard lol
User status: Offline
15th Dec 04 at 21:48   View User's Profile U2U Member Reply With Quote
head off and all valves dropped. bit off work involved. then the gasket will need replacing asweel as head bolts. could be the piston rings aswell mate
Fraser Young
Member
Registered: 26th Dec 02
Location: Dundee City Drives: 58 Impreza WRX
User status: Offline
15th Dec 04 at 22:05   View User's Profile U2U Member Reply With Quote
any way to find out which/both it is before the head comes off?
Mistamist
Member
Registered: 16th Jul 03
Location: Gillingham, Kent
User status: Offline
15th Dec 04 at 22:08   View User's Profile U2U Member Reply With Quote
try doing a compression test between cylinders.
James R
Member
Registered: 4th Feb 03
Location: 205GTi16/306GTi16
User status: Offline
16th Dec 04 at 00:37   View User's Profile U2U Member Reply With Quote
Get the engine up to temp, then disconnect the injectors and coil pack
A) do compression test
B) put about 5-10ml of oil in each bore and repeat above.

If results of A nd B are signifcantly different then the rings are leaky, and if not too dofferent then it's the valves.

While you have the head apart, new rollers, cam belt, water pump as a mater of course, and lap in the valves esp the exhuast valves as this will help things aswell.
James R
Member
Registered: 4th Feb 03
Location: 205GTi16/306GTi16
User status: Offline
16th Dec 04 at 00:38   View User's Profile U2U Member Reply With Quote
Get the engine up to temp, then disconnect the injectors and coil pack
A) do compression test
B) put about 5-10ml of oil in each bore and repeat above.

If results of A nd B are signifcantly different then the rings are leaky, and if not too dofferent then it's the valves.

While you have the head apart, new rollers, cam belt, water pump as a mater of course, and lap in the valves esp the exhuast valves as this will help things aswell.
Fraser Young
Member
Registered: 26th Dec 02
Location: Dundee City Drives: 58 Impreza WRX
User status: Offline
16th Dec 04 at 07:27   View User's Profile U2U Member Reply With Quote
wicked, cheers guys
X 60RSA
Member
Registered: 20th Aug 01
Location: Lincoln
User status: Offline
16th Dec 04 at 10:28   View User's Profile U2U Member Reply With Quote
If its your stems, your car might smoke when left over night and you go to strike it up in the morning say. Over night the oil has had time to run down the stems to the combustion area, strike her up in the morning and it might smoke for a bit.

If you get a bit of smoke coming from the dipstick as you remove it, can this be ring wear?
Siberia
Member
Registered: 9th Oct 03
Location: Leprechaun Land Drives : Zafira GSI
User status: Offline
16th Dec 04 at 10:31   View User's Profile U2U Member Reply With Quote
do ya have to take the head off??

can you not plum up an airline to yer spark plug holes to stop the valves from falling?
Greasemonkey
Member
Registered: 17th Apr 02
Location: Drives a Tractor
User status: Offline
16th Dec 04 at 10:51   View User's Profile U2U Member Reply With Quote
Yes you can pressurise the cylinders so the valves dont drop, this is how my mechanic does it, still tricky though
James R
Member
Registered: 4th Feb 03
Location: 205GTi16/306GTi16
User status: Offline
16th Dec 04 at 11:12   View User's Profile U2U Member Reply With Quote
taking the cams out makes sure the valves can't drop, since they have a big f**k off spring pulling them shut.
Siberia
Member
Registered: 9th Oct 03
Location: Leprechaun Land Drives : Zafira GSI
User status: Offline
16th Dec 04 at 11:25   View User's Profile U2U Member Reply With Quote
^ yeh but u have to take the springs out to do th the seals dont ya ?
James R
Member
Registered: 4th Feb 03
Location: 205GTi16/306GTi16
User status: Offline
16th Dec 04 at 11:34   View User's Profile U2U Member Reply With Quote
The head also has to come off.
I'll be doing this at the weekend, so will get some pics and maybe get it commited to the tutorials section.
Will also be lapping in all the valves too.
Siberia
Member
Registered: 9th Oct 03
Location: Leprechaun Land Drives : Zafira GSI
User status: Offline
16th Dec 04 at 11:42   View User's Profile U2U Member Reply With Quote
lapping the valves... sounds dirty or sumthing... WTF?

[Edited on 16-12-2004 by Siberia]
James R
Member
Registered: 4th Feb 03
Location: 205GTi16/306GTi16
User status: Offline
16th Dec 04 at 13:50   View User's Profile U2U Member Reply With Quote
It's a fine cutting paste you use to remove the pitting you get on the exhaust valves, ensures a better seal and as such better burn and betewr emissions.
Siberia
Member
Registered: 9th Oct 03
Location: Leprechaun Land Drives : Zafira GSI
User status: Offline
16th Dec 04 at 14:22   View User's Profile U2U Member Reply With Quote
sure wouldnt new ones be a better solution.....
James R
Member
Registered: 4th Feb 03
Location: 205GTi16/306GTi16
User status: Offline
16th Dec 04 at 14:29   View User's Profile U2U Member Reply With Quote
no, why throw away perfectly good valves when you can just lap them back in, it's not like I'm gonna put them on a bench grinder, it's like toothpaste consistancy.
And if you put in new valves then you should re-cut the seats.
So spend a few hours lapping, it many more re-cutting seats.
No brainer really
Stu_22
Member
Registered: 25th Mar 02
Location: Luton
User status: Offline
16th Dec 04 at 16:20   View User's Profile U2U Member Reply With Quote
Oh yeah lapping paste I knew i'd forggoten somthing.

Yep pics up next week
Greasemonkey
Member
Registered: 17th Apr 02
Location: Drives a Tractor
User status: Offline
16th Dec 04 at 16:44   View User's Profile U2U Member Reply With Quote
The pressure in the cylinders keeps the valves closed so when ya take off the spring cap and spring the valves dont drop, its easier to do it with head on and cheaper
James R
Member
Registered: 4th Feb 03
Location: 205GTi16/306GTi16
User status: Offline
16th Dec 04 at 17:11   View User's Profile U2U Member Reply With Quote
not if you are gonna lap them in too.

Whis if the stem seals have gone, the engines probably covers enough miles fo lapping to make a posotive difference.



Stu_22, how many times have I said about the paste
Siberia
Member
Registered: 9th Oct 03
Location: Leprechaun Land Drives : Zafira GSI
User status: Offline
16th Dec 04 at 18:08   View User's Profile U2U Member Reply With Quote
what do ya have to do with the paste?
James R
Member
Registered: 4th Feb 03
Location: 205GTi16/306GTi16
User status: Offline
16th Dec 04 at 19:47   View User's Profile U2U Member Reply With Quote
you smear a fine layer on to the contact area between the seat and the vlave then rotate the valves in the seat and the paste laps the valve back in.
Siberia
Member
Registered: 9th Oct 03
Location: Leprechaun Land Drives : Zafira GSI
User status: Offline
17th Dec 04 at 08:34   View User's Profile U2U Member Reply With Quote
u should write and encyclopedia(sp) the amount of stuff i learned in the last 2 weeks from you... mr broster and mr greasmonkey.....


hope yous are all not full of crap

[Edited on 17-12-2004 by Siberia]
Greasemonkey
Member
Registered: 17th Apr 02
Location: Drives a Tractor
User status: Offline
17th Dec 04 at 09:09   View User's Profile U2U Member Reply With Quote
Just to add ya use a special valve lapping tool, its a stick with a sucker on the end, ya stick it on to the flat end of the valve and use it to spin the valve in its seat against the runbbing compound, usually use two grades, course and a fine finishin paste
Siberia
Member
Registered: 9th Oct 03
Location: Leprechaun Land Drives : Zafira GSI
User status: Offline
17th Dec 04 at 09:12   View User's Profile U2U Member Reply With Quote
were are the valve 'seats'?

  <<  1    2  >>
New Topic
New Poll

  Related Threads Author Forum Replies Views Last Post
smokey problem psycho sport Help Zone, Modification and ICE Advice 8 533
13th May 03 at 21:08
by daz145bhp		  
what makes a car fail its emissions? Blazer Help Zone, Modification and ICE Advice 18 1745
2nd Jul 03 at 05:40
by leeshez		  
Head Gasket drunkenfool Help Zone, Modification and ICE Advice 19 1438
19th Sep 03 at 16:34
by Dave Hay		  
slightly smokey................ JUGGA Help Zone, Modification and ICE Advice 2 1206
18th Mar 04 at 23:11
by bubblevaux		  
How much to get Valve stem seals replaced??? MoNkEy MaGiC Help Zone, Modification and ICE Advice 7 4295
15th Aug 09 at 18:41
by gez c16b		  

Corsa Sport » Message Board » Help Zone, Modification and ICE Advice » oil stem seals 27 database queries in 0.0135510 seconds