RED HOT exhaust - Defender Source
Defender Source  

Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions


Reply
 
Thread Tools
  #1  
Old February 17th, 2016, 12:31 PM
DocB
Status: Offline
David
1989 D110
Member
 
Join Date: Jan 2016
Location: Oceanside, Ca
Posts: 228
RED HOT exhaust

After my head gasket replacement last week, I invented an exhaust gasket out of the bottom of a Coors Light can. Just until the legit gasket comes in from the UK. Well I'm pretty sure that it melted today. Popped the hood after about 15 minutes of highway driving to find that my exhaust manifold was GLOWING red hot. I've never seen this before? Coolant/oil temps and pressure was normal. Car running fine, minus the small exhaust leak that developed only about a minute before I pulled off the highway.

Photo attached, your thoughts?
Attached Thumbnails
Click image for larger version

Name:	image.jpg
Views:	88
Size:	112.3 KB
ID:	142595  
Reply With Quote
Sponsored Links
Advertisement
 
  #2  
Old February 17th, 2016, 12:33 PM
leastonce's Avatar
leastonce
Status: Offline
Jason England
D-90 White 95 SW #65
Site Team
 
Join Date: Jul 2009
Location: NYC
Posts: 6,078
Registry
Blocked cats?
__________________
Quote:
Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
Car Camping Collective founding member and Chief Executive Officer
Cat Camping Collective founding member and Chief Executive Officer
Reply With Quote
  #3  
Old February 17th, 2016, 12:38 PM
DocB
Status: Offline
David
1989 D110
Member
 
Join Date: Jan 2016
Location: Oceanside, Ca
Posts: 228
"Custom" gasket lol
Attached Thumbnails
Click image for larger version

Name:	image.jpg
Views:	103
Size:	61.1 KB
ID:	142597  
Reply With Quote
Sponsored Links
Advertisement
 
  #4  
Old February 17th, 2016, 12:42 PM
DocB
Status: Offline
David
1989 D110
Member
 
Join Date: Jan 2016
Location: Oceanside, Ca
Posts: 228
Almost looks original!
Attached Thumbnails
Click image for larger version

Name:	image.jpg
Views:	75
Size:	69.4 KB
ID:	142598  
Reply With Quote
  #5  
Old February 17th, 2016, 12:47 PM
DocB
Status: Offline
David
1989 D110
Member
 
Join Date: Jan 2016
Location: Oceanside, Ca
Posts: 228
On the car...
Attached Thumbnails
Click image for larger version

Name:	image.jpg
Views:	86
Size:	110.5 KB
ID:	142599  
Reply With Quote
  #6  
Old February 17th, 2016, 12:54 PM
MisterSHO
Status: Offline
David K
87 110, 95 RRC
Member
 
Join Date: Oct 2015
Location: Hudson, MA
Posts: 152
Love this. I'm gonna go crush a six-pack juuuuust in case.
Reply With Quote
  #7  
Old February 17th, 2016, 12:59 PM
DocB
Status: Offline
David
1989 D110
Member
 
Join Date: Jan 2016
Location: Oceanside, Ca
Posts: 228
Quote:
Originally Posted by leastonce View Post
Blocked cats?


Definitely don't have a cat lol

1989 ex-mil petrol
Reply With Quote
  #8  
Old February 17th, 2016, 01:09 PM
evilfij's Avatar
evilfij
Status: Offline
evilfij
I have never seen a rover in person
Member
 
Join Date: Oct 2003
Location: on the internet
Posts: 14,688
Blocked exhaust or you are running way out of tune.
__________________
*not legal advice*
Reply With Quote
  #9  
Old February 17th, 2016, 01:18 PM
NPT90's Avatar
NPT90
Status: Offline
JT
D90 óriginalé
Member
 
Join Date: Apr 2011
Location: DC/MD
Posts: 2,772
Registry
Quote:
Originally Posted by DocB View Post
After my head gasket replacement last week, I invented an exhaust gasket out of the bottom of a Coors Light can. Just until the legit gasket comes in from the UK. Well I'm pretty sure that it melted today. Popped the hood after about 15 minutes of highway driving to find that my exhaust manifold was GLOWING red hot. I've never seen this before? Coolant/oil temps and pressure was normal. Car running fine, minus the small exhaust leak that developed only about a minute before I pulled off the highway.

Photo attached, your thoughts?
In all my years of vehicle ownership I can honestly say I have never seen that before, even running rich would produce a fuel smell, you sure you aren't running it in low gear or something?
Reply With Quote
  #10  
Old February 17th, 2016, 01:19 PM
Uncle Douglas's Avatar
Uncle Douglas
Status: Offline
Doug Crowther
A defender in every driveway-motto
D-90 Source Vendor
 
Join Date: Dec 2007
Location: Gods Country- Central Virginia
Posts: 11,841
Registry
red hot exhaust manifold is a sign that timing is way retarded.
__________________
Good judgement comes from experience,experience comes from bad judgement.

Dividing Creek Imports
Worldwide Vehicle Shipment and Importation Service
Restoration & Modification work


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

410.693.1391


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
  #11  
Old February 17th, 2016, 01:20 PM
Red90's Avatar
Red90
Status: Offline
John B.
1991 Defender 90, 200TDI
Site Team
 
Join Date: Sep 2003
Location: Calgary
Posts: 9,250
Registry
Exhaust runs hotter than the melting point of aluminum so it is not the best option for an exhaust gasket......

What engine are we talking about? 2.5 petrol?
__________________
Pissing people off on the "net" since 1983.

Land Rover. Turning owners into mechanics since 1948.
Reply With Quote
  #12  
Old February 17th, 2016, 01:21 PM
NPT90's Avatar
NPT90
Status: Offline
JT
D90 óriginalé
Member
 
Join Date: Apr 2011
Location: DC/MD
Posts: 2,772
Registry
Could it be the aluminum gasket?

Aluminum Glows
Reply With Quote
  #13  
Old February 17th, 2016, 01:38 PM
DocB
Status: Offline
David
1989 D110
Member
 
Join Date: Jan 2016
Location: Oceanside, Ca
Posts: 228
Quote:
Originally Posted by Red90 View Post
Exhaust runs hotter than the melting point of aluminum so it is not the best option for an exhaust gasket......

What engine are we talking about? 2.5 petrol?
Yup 2.5 petrol. Stock motor, nothing special. I wasn't expecting too much life out of the bee can gasket lol. Just crossing my fingers until the correct part gets here from the UK.

Even if it did melt it, I've never seen a manifold get that hot from simply driving on the highway

------ Follow up post added February 17th, 2016 10:42 AM ------

Quote:
Originally Posted by Uncle Douglas View Post
red hot exhaust manifold is a sign that timing is way retarded.
Not going to lie, but I tuned it by ear and I'm not a super expert with tuning by ear. I did retard the timing a bit yesterday to lower the idle. It was WAY high and not correcting enough by adjusting not the mixture
Reply With Quote
  #14  
Old February 17th, 2016, 01:45 PM
slorocco
Status: Offline
Dan Prasada-Rao
1963, 109 Station Wagon
Member
 
Join Date: Oct 2004
Location: Great Mills, MD, USA
Posts: 930
Is there not an idle speed adjustment on the carb?
Reply With Quote
  #15  
Old February 17th, 2016, 01:51 PM
rdavisinva's Avatar
rdavisinva
Status: Offline
Robert Davis
N/A
Member
 
Join Date: Oct 2004
Location: USA
Posts: 6,810
As UD said: Timing is way off.
As John said: Aluminum is not an acceptable material for any part of an exhaust system.

I think I posted how to time your engine.
Did you read that?
You can use the same procedure to check your timing without running the engine.

Are the weights and springs in your distributor moving freely when you manually twist the rotor?
Don't twist too hard as the rotor is plastic and can break off.
__________________
RDavisinVA

Uncle "Richard" Douglas has a Land Rover with big wheels that never gets stuck... until he breaks something so it won't go. Uncle Douglas always breaks something. - Anna Crowther at the Conclave 2012 (AKA Carburetor Neck)

"What's with this death wobble, Uncle Douglas, I can't keep it in 1 lane?"
UD: "Just Power through it man!"
Reply With Quote
  #16  
Old February 17th, 2016, 02:01 PM
Red90's Avatar
Red90
Status: Offline
John B.
1991 Defender 90, 200TDI
Site Team
 
Join Date: Sep 2003
Location: Calgary
Posts: 9,250
Registry
On the timing.... Get a timing light and tach and check timing versus engine speed and make sure it is in spec per the manual.... Before you do another head gasket or worse.

If it is not the timing or a restriction in the exhaust, it is running lean.
__________________
Pissing people off on the "net" since 1983.

Land Rover. Turning owners into mechanics since 1948.
Reply With Quote
  #17  
Old February 17th, 2016, 02:10 PM
bish1865
Status: Offline
Bruce Bishop
1985 Defender 110
Member
 
Join Date: Jan 2009
Location: Fair Oaks Ca.
Posts: 89
If the 2.5 gas uses the same size exhaust as 2.5 NA diesel. I found like replacement at Riebies auto parts. I brought my old one in and they matched it. I don't recall what auto used a similar gasket. But what they gave me lasted 2 years until I removed the engine. Saves waiting for parts out of the UK.
Reply With Quote
  #18  
Old February 17th, 2016, 02:10 PM
Roverlab
Status: Offline
Trevor Griffiths
85 110, 92 110, 92 RR, 06 LR3
Member
 
Join Date: Jan 2008
Location: Elizabethotwn, PA
Posts: 1,647
Which may have contributed to the head gasket failure...?
__________________
Roverlab is now British 4x4 Specialists.
Email is
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Same place, new dogs.
Reply With Quote
  #19  
Old February 17th, 2016, 10:18 PM
DocB
Status: Offline
David
1989 D110
Member
 
Join Date: Jan 2016
Location: Oceanside, Ca
Posts: 228
Quote:
Originally Posted by slorocco View Post
Is there not an idle speed adjustment on the carb?
There is a set screw with a spring behind it on the side of the carb that I believe sets the mixture. Is there two screws? (I.e. One for mixture and one for idle speed)

------ Follow up post added February 17th, 2016 07:19 PM ------

Quote:
Originally Posted by Red90 View Post
On the timing.... Get a timing light and tach and check timing versus engine speed and make sure it is in spec per the manual.... Before you do another head gasket or worse.

If it is not the timing or a restriction in the exhaust, it is running lean.
Set the mixture more rich and advanced the timing, seems to be running a lot better and more smooth. Got a timing light on my way home and I'm about to go check it out
Reply With Quote
  #20  
Old February 18th, 2016, 12:57 AM
DocB
Status: Offline
David
1989 D110
Member
 
Join Date: Jan 2016
Location: Oceanside, Ca
Posts: 228
Ok, I found the manual for tuning the carb. Started by setting the timing to 0degrees at idle. (No tach to set it under load). Made sure that the choke was functioning. Set idle speed to 6-700 RPMs (estimate) and started to adjust the mixture screw. No change. I'm beginning to think that this is a carb issue. Like I need a new carb issue lol.

Also noticed something that seems weird. So I pulled off the top elbow to look down the barrels. One of the barrels looks completely unused. It I press the throttle, no fuel squirts in there. The butterfly is closed and the barrels looks clean and brand new. Playing around with levers, there was no way that I could get the butterfly to open at all. Someone please educate me if this is normal or not!
Reply With Quote
Reply

Lower Navigation
Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions

Tags
exhaust

Thread Tools

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Red SW with red wheels bjf Misc. Chit-Chat 12 April 10th, 2008 12:55 AM
A/C Help......hot, hot, hot! boulderbear Defender Technical Discussions 7 August 26th, 2006 07:54 PM
Can you fab a diesel exhaust like a V8 exhaust? solihul Defender Technical Discussions 8 September 7th, 2005 04:09 PM
Superlift ORV Park in Hot Springs, Arkansas Nov. 20-23 Joe B Trips, Trails and Events 5 November 12th, 2003 10:07 AM
Hot/Cold - Blue/Red Heater control cover SFD90 Defender Technical Discussions 5 October 21st, 2003 06:31 PM


All times are GMT -5. The time now is 09:14 AM.


Copyright