corsasport.co.uk
 

Corsa Sport » Message Board » Help Zone, Modification and ICE Advice » Valve colouring in a cylinder head


New Topic

New Poll
  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 Valve colouring in a cylinder head
Robin
Premium Member

Avatar

Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
User status: Offline
5th Oct 07 at 00:09   View Garage View User's Profile U2U Member Reply With Quote

What does this picture tell you about how the engine was running?



I know the second cylinder was oily, but what about the white on the exhaust valves on the other 3, what does that mean?
Dave A
USER UNDER INVESTIGATION - DO NOT TRADE

Registered: 10th Dec 03
Location: County Durham
User status: Offline
5th Oct 07 at 07:53   View User's Profile U2U Member Reply With Quote

clean burning engine, possibly a little lean. have also seen engines that have similar colouring on the valves that have been burning some types of coolant.
ad-sport
Member

Registered: 16th May 07
User status: Offline
5th Oct 07 at 17:33   View User's Profile U2U Member Reply With Quote

it would probably wash the whole area tho if it was coolant wouldnt it? i think they look ok realy, why was the head removed?
Superlite Ltd.
Member

Registered: 9th Jan 07
User status: Offline
5th Oct 07 at 18:20   View User's Profile U2U Member Reply With Quote

lean imo

what do the plugs look like?

[Edited on 05-10-2007 by Superlite Ltd.]
phil_sutton
Member

Registered: 8th Sep 07
Location: Nottingham
User status: Offline
5th Oct 07 at 18:26   View User's Profile U2U Member Reply With Quote

second one is burning oil I would say, rest look fairly normal. Also what did the head gasket look like, had it gone anyway?
ad-sport
Member

Registered: 16th May 07
User status: Offline
5th Oct 07 at 18:28   View User's Profile U2U Member Reply With Quote

head gasket will be buggered now mate
Robin
Premium Member

Avatar

Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
User status: Offline
5th Oct 07 at 18:40   View Garage View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Superlite Ltd.
lean imo

what do the plugs look like?

[Edited on 05-10-2007 by Superlite Ltd.]


No idea, I haven't got them
Robin
Premium Member

Avatar

Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
User status: Offline
5th Oct 07 at 18:41   View Garage View User's Profile U2U Member Reply With Quote

quote:
Originally posted by ad-sport
it would probably wash the whole area tho if it was coolant wouldnt it? i think they look ok realy, why was the head removed?


for the same reason the sump, cams, crank and pistons were
Robin
Premium Member

Avatar

Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
User status: Offline
5th Oct 07 at 18:42   View Garage View User's Profile U2U Member Reply With Quote

quote:
Originally posted by phil_sutton
second one is burning oil I would say, rest look fairly normal. Also what did the head gasket look like, had it gone anyway?


Robin
Premium Member

Avatar

Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
User status: Offline
5th Oct 07 at 18:44   View Garage View User's Profile U2U Member Reply With Quote

I'm not too fussed BTW, the engine will be having a full rebuild, as will the head, so it won't be burning oil anymore.

I was just wondering if white was normal as it seemed a bit odd to me having 2 white and 2 black in each cylinder, but then it's only the second engine I've had in bits which wasn't already cleaned, so I don't know
Richardhhha
Member

Registered: 29th Sep 07
Location: Croydon, Greater London
User status: Offline
5th Oct 07 at 19:46   View User's Profile U2U Member Reply With Quote

your always looking to have a slightly off tan colour to the lavles and plugs for a clean burning engine, cyl 1 was a bit lean but 4 is what you want to see accross the boared.

whilst the heads off why dont you go get it ported?
Robin
Premium Member

Avatar

Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
User status: Offline
5th Oct 07 at 19:58   View Garage View User's Profile U2U Member Reply With Quote

According to my sources (PPC magazine and edition38 forum) the VW KR head is a really good design already, so doesn't need porting, people have done it before and it's basically been a waste of money.
joey736
Member

Registered: 11th Mar 07
Location: hexham, near newcastle drives: Aurora XE
User status: Offline
6th Oct 07 at 10:04   View User's Profile U2U Member Reply With Quote

pics of mine:





im glad to hear this is a healthy sign
Superlite Ltd.
Member

Registered: 9th Jan 07
User status: Offline
6th Oct 07 at 10:14   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Robin
According to my sources (PPC magazine and edition38 forum) the VW KR head is a really good design already, so doesn't need porting, people have done it before and it's basically been a waste of money.


opposite to the AGG where head work and cams is the first thing to do
Robin
Premium Member

Avatar

Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
User status: Offline
6th Oct 07 at 18:36   View Garage View User's Profile U2U Member Reply With Quote

The cam profile in the KR is pretty good too

People use them in ABF/9a engines as a cheap 'sports' cam

 
New Topic

New Poll

  Related Threads Author Forum Replies Views Last Post
16valve engines Ditch General Chat 29 2443
15th Jan 04 at 19:17
by dousey
 
Cylinder Head D Binnie Help Zone, Modification and ICE Advice 3 480
21st Jan 05 at 15:04
by PaulW
 
tapets? supacook2k Help Zone, Modification and ICE Advice 9 1188
30th Jan 05 at 22:13
by Adam_B
 
Piston ring question's....Compression test result bottom of page 1 Rob B Help Zone, Modification and ICE Advice 36 1951
27th Jul 06 at 00:09
by Rob B
 
I sold my Rallye... Butler General Chat 62 2702
6th Jun 07 at 13:45
by Dee
 

Corsa Sport » Message Board » Help Zone, Modification and ICE Advice » Valve colouring in a cylinder head 28 database queries in 1.3747730 seconds