Exhaust Downpipe extension - Motorhome Forums, Motorhome Discussion, Motorhome Chat

User Tag List

 
LinkBack Thread Tools
post #1 of 3 (permalink) Old 22-07-2013, 20:36 Thread Starter
Senior Member
 
blade1889's Avatar
 
Join Date: Jul 2008
Location: Derbyshire
Posts: 146
Thanks: 0
Thanked 0 Times in 0 Posts
Exhaust Downpipe extension

Just spent 2 part days removing Tar deposits from the back of the motorhome. It had been there probably 6 months (when weather was cold), took hell of a lot of cleaning.

Anyway to my point.
Bought some Tar remover from a garage & the owner was saying that the said 'Tar' may have come from the exhaust & vortexed around the back of the vehicle?
His solution was to put an end downpipe facing the road to avoid this.

Could this be true that it came from the exhaust or that an extention on the exhaust would help?

Confused. Comments appreciated.

Live for today, for tomorrow is promised to no-one

http://verabrianfollowthesungodra.bl...mber-thru.html
blade1889 is offline  
Sponsored Links
Advertisement
 
post #2 of 3 (permalink) Old 22-07-2013, 20:46
Senior Member
 
listerdiesel's Avatar
 
Join Date: Aug 2012
Location: Rushden, Northants
My Motorhome: Mercedes 614D
Posts: 6,846
Thanks: 46
Thanked 265 Times in 244 Posts
Personal Aire
If you are chucking oil/carbon out of the exhaust, it could be expensive.

Diesels have an issue with running on light loads at less than optimum temperatures, it is called 'bore glazing'.

It affects most diesels that spend a lot of time idling or doing a lot of stop-start trips.

Best cure is a decent run out to get the engine up to full working temperature and the bores and rings cleaned up.

Having said that, I've never seen a road diesel chuck out anything 'tar' like, it is usually oil smuts that can be wiped off easily.

Tar comes from the road, nowhere else.

Peter
listerdiesel is offline  
post #3 of 3 (permalink) Old 22-07-2013, 21:19
747
Senior Member
 
747's Avatar
 
Join Date: Oct 2009
Location: Gateshead
My Motorhome: Burstner Delphin Performance T821
Posts: 8,416
Thanks: 7
Thanked 38 Times in 34 Posts
Personal Aire
I fitted a deflector on the end of my exhaust pipe but that was only because I converted it to the standard RH drive exhaust. It is close to the hab door and I was worried about fumes getting into the van.

Is your exhaust tailpipe under the van? I would have thought it came out of the side by a few inches. I just bought a cheap deflector to try it and it worked. One of these days I will have to get a shiny one.

Nil Desperandum Illegitemide Carborundum
747 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Motorhome Forums, Motorhome Discussion, Motorhome Chat 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 for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



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