FORUM CLASSIFIEDS DIFFLOCK.com Links & Networks
Forum Homepage
Log in
Profile
Search
Private Messages
Forum Members
Register
Classified Ads
Search Ads
Place New Ad
My ads
Place your classified
ads here for FREE
NB: Adverts placed in the general
forum areas will be deleted
Difflock Homepage
Online Shop
Contact Us
FAQ
Calendar
Garage
Facebook
Twitter
Youtube
Advertise With Us - Reach your target market by advertising on the Difflock.com forum.
Click here or call 0845 125 9407


cherokee 2.5vm head

 
 
Post new topic   Reply to topic    Difflock Forum Index -> Jeep
View previous topic :: View next topic  
Author Message
tomthemonky
Gate Opener


Joined: 30 Nov 2011
Odometer: 38
Location: North Wales



PostPosted: Sat May 19, 2012 5:48 pm    Post subject: cherokee 2.5vm head Reply with quote

In the process of replacing the head gasket as it was pressurising the coolant system and i have some questions.

ok so first of how can i tell if the heads have been skimmed before?

is it normal for where the injector hole is to be bent where the piston is hitting the head? all 4 heads are like this.

how much on average does it cost to get all 4 heads pressure tested and maybe skimmed?

the gasket looks ok i.e. there isnt any significant signs of corrosion or damage. it is a one piece gasket, not the 4 separate gaskets (its a p reg, 1997? is this normal?) but no.1 head (at the front of the jeep) exhaust valve has like a yellow, gunky almost like glue substance around it/in it and a slight scratch by the valve. will this be the reason for it pressurising?

phew :/

thanks in advance, probably be more questions to follow Sad

__________________________________
Jeep cherokee 2.5td

VW SPAM gti mk2
Back to top
View user's profile Send private message Send e-mail MSN Messenger
minimog
Off-Road Guru


Joined: 25 Nov 2004
Odometer: 1700




PostPosted: Sat May 19, 2012 6:40 pm    Post subject: Reply with quote

It sounds like a cracked head on number one cylinder
__________________________________
WHAT YOUR ASKED WHEN YOU OWN A MOG
"why have you put a merc star on that"
UNIMOG MOTTO
"IF IT CARNT BE FIXED WITH A BIG HAMMER"
IT MUST BE AN ELECTRICAL FAULT"
Back to top
View user's profile Send private message
The Smiths
Articulating


Joined: 21 Nov 2007
Odometer: 711
Location: Doncaster



PostPosted: Sat May 19, 2012 7:08 pm    Post subject: Reply with quote

gaskets don't normally go - its heads.

Also heads should NOT be skimmed at all - just cleaned up

__________________________________
If you always do what you have always done,
you always get what you've always got.
Back to top
View user's profile Send private message
tomthemonky
Gate Opener


Joined: 30 Nov 2011
Odometer: 38
Location: North Wales



PostPosted: Sat May 19, 2012 9:54 pm    Post subject: Reply with quote

why should they not be skimmed? what is the solution?
__________________________________
Jeep cherokee 2.5td

VW SPAM gti mk2
Back to top
View user's profile Send private message Send e-mail MSN Messenger
The Smiths
Articulating


Joined: 21 Nov 2007
Odometer: 711
Location: Doncaster



PostPosted: Sat May 19, 2012 10:12 pm    Post subject: Re: cherokee 2.5vm head Reply with quote

tomthemonky wrote:

is it normal for where the injector hole is to be bent where the piston is hitting the head? all 4 heads are like this.

Sad



sounds like someone may have had heads skimmed, and then fitted wrong thickness gasket..........

surface of heads should only be cleaned - or else you will have continual head problems until new heat treated ones are fitted....

__________________________________
If you always do what you have always done,
you always get what you've always got.
Back to top
View user's profile Send private message
nutshot
Winch Assistant


Joined: 13 Mar 2007
Odometer: 96
Location: Chesterfield



PostPosted: Sun May 20, 2012 9:53 am    Post subject: Reply with quote

tomthemonky wrote:
why should they not be skimmed? what is the solution?


The heads are coated so your not supposed to skim them . Saying that I had 4 heads skimmed for my old 2.5 against the recommendation of a Vm diesel specialist at Chesterfield and I didn`t have an issue running it for a couple of years and about 15,000 miles . Sold it on after that so don`t know if there has been any issues latter down the line .
Back to top
View user's profile Send private message Send e-mail Visit poster's website eBay Name
tomthemonky
Gate Opener


Joined: 30 Nov 2011
Odometer: 38
Location: North Wales



PostPosted: Sun May 20, 2012 7:47 pm    Post subject: Reply with quote

sounds like i need 4 new heads then. how can i tell if there cracked? is it obvious or will pressure testing be the soln?
__________________________________
Jeep cherokee 2.5td

VW SPAM gti mk2
Back to top
View user's profile Send private message Send e-mail MSN Messenger
dxmedia
Mud Obsessed


Joined: 10 Dec 2008
Odometer: 2185




PostPosted: Sun May 20, 2012 8:08 pm    Post subject: Reply with quote

Behind the valves is where they normally go.
Back to top
View user's profile Send private message
The Smiths
Articulating


Joined: 21 Nov 2007
Odometer: 711
Location: Doncaster



PostPosted: Sun May 20, 2012 9:52 pm    Post subject: Reply with quote

If the engine was running then you only need to remove water jacket and look - but a little late for that now.
__________________________________
If you always do what you have always done,
you always get what you've always got.
Back to top
View user's profile Send private message
tomthemonky
Gate Opener


Joined: 30 Nov 2011
Odometer: 38
Location: North Wales



PostPosted: Sun May 20, 2012 10:11 pm    Post subject: Reply with quote

either way i need 4 new heads as there cracked by the injector hole, if they cant be skimmed Sad
__________________________________
Jeep cherokee 2.5td

VW SPAM gti mk2
Back to top
View user's profile Send private message Send e-mail MSN Messenger
tomthemonky
Gate Opener


Joined: 30 Nov 2011
Odometer: 38
Location: North Wales



PostPosted: Wed Jun 13, 2012 6:16 pm    Post subject: Reply with quote



this is similar on all 4 heads. is this normal? also how can i tell if it has been skimmed?

thanks[/img]

__________________________________
Jeep cherokee 2.5td

VW SPAM gti mk2
Back to top
View user's profile Send private message Send e-mail MSN Messenger
minimog
Off-Road Guru


Joined: 25 Nov 2004
Odometer: 1700




PostPosted: Fri Jun 15, 2012 8:13 am    Post subject: Reply with quote

That you have circled is normal due to the injector its cracks from the valve area you need to look for or just get it preasure checked to find out properley
__________________________________
WHAT YOUR ASKED WHEN YOU OWN A MOG
"why have you put a merc star on that"
UNIMOG MOTTO
"IF IT CARNT BE FIXED WITH A BIG HAMMER"
IT MUST BE AN ELECTRICAL FAULT"
Back to top
View user's profile Send private message
rustycj
Gate Opener


Joined: 31 Aug 2011
Odometer: 8




PostPosted: Fri Jun 15, 2012 10:00 am    Post subject: Reply with quote

look in detail at the area between valves, it is more prone for cracking than the circled one
Back to top
View user's profile Send private message
tomthemonky
Gate Opener


Joined: 30 Nov 2011
Odometer: 38
Location: North Wales



PostPosted: Sat Oct 06, 2012 8:11 am    Post subject: Reply with quote

update: heads pressure tested finaly, time to reassemble.

can anyone tell me the torque seqance/ values?

I have purchased a gasket kit allong with the head gasket but im unsure where some of the gaskets SPAM i upload a picture could someone help?

cheers

__________________________________
Jeep cherokee 2.5td

VW SPAM gti mk2
Back to top
View user's profile Send private message Send e-mail MSN Messenger
Display posts from previous:   
Post new topic   Reply to topic    Difflock Forum Index -> Jeep All times are GMT - 12 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot post calendar events in this forum
Adrian Flux 2023

Facebook

Specialist Tools

Oil Safe

Evo Oils

Join our mailing list for upcoming events, special offers, discount coupons and expert advice on the latest 4x4 products!

* indicates required





    
Powered by phpBB © phpBB Group