got tri - y headers - now what - Page 11 - Mercedes-Benz Forum
Reply
 
LinkBack Thread Tools Display Modes
post #101 of 169 (permalink) Old 04-14-2019, 06:03 PM
BenzWorld Member
 
Date registered: Jul 2011
Vehicle: '87 560 SEC, Pearl Grey/blue; 300,000+ mi; '07 CLS 550, Barolo/stone; 90,000+ mi
Location: Raleigh, NC
Posts: 287
Mentioned: 0 Post(s)
Quoted: 37 Post(s)
Quote:
Originally Posted by vdubpower View Post
learned today that the downpipes were supposed to have some sort of insulation on them...mine didnt
The factory originals were "aluminized" steel--coated with aluminum as an extra measure of protection, but over time chip and lead to rust rot. I was fortunate to obtain some aftermarket production downpipes that were either stainless or high-chromoly steel (perhaps yours are the same type), and sent them to SwainTech for the "White Lightning" coating (for heat dampening and some modicum of corrosion protection). It penetrates the pores and is applied in three coats, so they are assuming some chipping over time and still protection is embedded in the steel.
DrewPT is offline  
Sponsored Links
Advertisement
 
post #102 of 169 (permalink) Old 04-14-2019, 08:46 PM Thread Starter
BenzWorld Elite
 
vdubpower's Avatar
 
Date registered: Nov 2003
Vehicle: 1985 500sel and 500sec 2012 E63 1989 Porsche 911
Location: So-Cal
Posts: 4,792
Mentioned: 13 Post(s)
Quoted: 545 Post(s)
(Thread Starter)
yeah i had mine blasted and ceramic coated...probably similar to what you had done

my issue now obviously is this fitment issue with the driver side ...im gonna have to have someone heat bend them i guess, if thats even possible ...and then im sure my coating will get messed up...

1985 500SEL Euro Nautic Blue - A Classic Beauty
1985 500SEC Euro Nautic Blue
1989 Porsche 911 Carrera Silver Anniversary Edition
2012 E63 AMG Iridium Silver - Performance Package
vdubpower is offline  
post #103 of 169 (permalink) Old 04-15-2019, 06:48 PM
BenzWorld Member
 
Date registered: Jul 2011
Vehicle: '87 560 SEC, Pearl Grey/blue; 300,000+ mi; '07 CLS 550, Barolo/stone; 90,000+ mi
Location: Raleigh, NC
Posts: 287
Mentioned: 0 Post(s)
Quoted: 37 Post(s)
Quote:
Originally Posted by vdubpower View Post
yeah i had mine blasted and ceramic coated...probably similar to what you had done

my issue now obviously is this fitment issue with the driver side ...im gonna have to have someone heat bend them i guess, if thats even possible ...and then im sure my coating will get messed up...
Hopefully its just an issue of having to change smushed transmission and/or engine mounts as others have suggested--I can't imagine trying to heat bend those things.
DrewPT is offline  
Sponsored Links
Advertisement
 
post #104 of 169 (permalink) Old 04-15-2019, 09:26 PM Thread Starter
BenzWorld Elite
 
vdubpower's Avatar
 
Date registered: Nov 2003
Vehicle: 1985 500sel and 500sec 2012 E63 1989 Porsche 911
Location: So-Cal
Posts: 4,792
Mentioned: 13 Post(s)
Quoted: 545 Post(s)
(Thread Starter)
yeah i dunno, all mounts are confirmed good, mechanic checked, ive checked, they are solid

1985 500SEL Euro Nautic Blue - A Classic Beauty
1985 500SEC Euro Nautic Blue
1989 Porsche 911 Carrera Silver Anniversary Edition
2012 E63 AMG Iridium Silver - Performance Package
vdubpower is offline  
post #105 of 169 (permalink) Old 04-16-2019, 01:38 AM
BenzWorld Elite
 
Date registered: Feb 2008
Vehicle: Too many to list
Location: USA
Posts: 8,213
Mentioned: 62 Post(s)
Quoted: 1517 Post(s)
They just need to be bent up more towards the car, right ? Seems you could just jack the car up , by the down pipe itself , to push it upwards.
tusabes is offline  
post #106 of 169 (permalink) Old 04-16-2019, 04:02 AM
Moderator
Outstanding Contributor
 
MBL87560SEC's Avatar
 
Date registered: Jul 2004
Vehicle: 1991 500SEC sub 50K mi. 1987 560SEC Now 150K mi. 2018
Location: Boston, MA area
Posts: 3,804
Mentioned: 18 Post(s)
Quoted: 398 Post(s)
Lifetime Premium Member
Garage
vdub,

I've been puzzling about your left side pipe fitment issue for days, and there is one factor you had mentioned, as yet to be considered here.

In your post 91, something you wrote caught my eye this morning:

Quote:
Originally Posted by vdubpower View Post
we really dont know what we should do...tony was thinking the exhaust shop could heat the pipes to help get it around..i dont know

we rechecked the headers again and again to make sure they were correct....obviously they can only fit in one position right?
You had said back in post 21 that you'd had the manifold flanges 'cleaned up' / machined and posted a pic .. Why was this done please? Had there been a gouge on a sealing surface perhaps? Were the left & right side manifolds ground together? Were the four ground individually? How were they keyed to a common reference point? How much material was removed?

The reason I bring this up is that in machining them thinner [as was done here], effectively tucks the exhaust in closer to the centerline of the engine. Furthermore, if by happenstance, the manifold[s] were ever so slightly rotated off plane [and surfaces ground], it would follow that [when mounted], this rotation would amplify outwards... Just sayin'...

I realize this is but a possibility, a longshot really rather than a probability here.. It's only thousanths of an inch after all.. That said, it is an aspect now that the manifold mating surfaces have been altered, back in February. Material removed here alters the 'reference point'... the spacial geometry if you will. Done without due care, ..... one questions.......

In my Tri-Y readings since 2004, in all the threads discussing Tri-Ys here on BW, and other sites I've similarly researched, I believe this is the first time I have read of header flanges being machined.



Going forward, to gain more clearance, has your tech discussed remounting the left side manifolds while doubling up on the exhaust port flange gaskets?
Look, I don't even know if this is feasible, but if so, by doing, it seems possible to move/shim the manifold inlets/outputs & downpipes outward/downwards, thus further away from the 'engine centerline'*, gaining clearance [at the bell housing] you don't have at present.

If this were even possible, would the effort/expense be worth it?

It's an idea anyways...

M

* At the same oblique angle [from the vertical] as the exhaust ports / mounting flanges.


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

91 500SEC EURO Germany
87 560SEC USA 49 State Version

Last edited by MBL87560SEC; 04-16-2019 at 07:01 PM. Reason: Syntax & Clarity
MBL87560SEC is offline  
post #107 of 169 (permalink) Old 04-16-2019, 04:17 AM
Moderator
Outstanding Contributor
 
MBL87560SEC's Avatar
 
Date registered: Jul 2004
Vehicle: 1991 500SEC sub 50K mi. 1987 560SEC Now 150K mi. 2018
Location: Boston, MA area
Posts: 3,804
Mentioned: 18 Post(s)
Quoted: 398 Post(s)
Lifetime Premium Member
Garage
Quote:
Originally Posted by tusabes View Post
They just need to be bent up more towards the car, right ? Seems you could just jack the car up , by the down pipe itself , to push it upwards.
Though he did say "get it lifted up to use the brackets and clamp.." in post 91, I thought he was talking about lack of clearance drivers' side.. downpipe to bell housing/transmission.. "part of tube is really close to the transmission ....like i can barely slide a piece of paper in between...." His pic shows it right ON the bell housing in post 93..

With all the joints, flanges, support brackets .. there ought to be enough wiggle room.. but apparently, in this case there just isn't..


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

91 500SEC EURO Germany
87 560SEC USA 49 State Version
MBL87560SEC is offline  
post #108 of 169 (permalink) Old 04-16-2019, 08:49 AM
BenzWorld Member
 
Das 420's Avatar
 
Date registered: Jul 2013
Vehicle: 1990 420 SEL, 1990 560sel, 1991 300e
Location: Ontario, Canada
Posts: 342
Mentioned: 1 Post(s)
Quoted: 108 Post(s)
Quote:
Originally Posted by MBL87560SEC View Post
I realize this is but a possibility, a longshot really rather than a probability here.. It's only thousanths of an inch after all.. That said, it is an aspect now that the manifold mating surfaces have been altered back in February..
Im getting ready to install my Try-y's so ive been following this thread, with the understanding that they are a tight fit on our cars.

Im wondering if the ports got machined at a slight angle, just 0.5-1 deg of offset angle when machining the flanges could possibly cause 1/2" or more of in/out movement at the collector flange.


On a side note, what are the recommended bolts to be used on the heads when mounting the manifolds. Do folks just order up original mb, or go with something different like a stainless bolt with stainless washers? I prefer not to reuse the originals as they are not the best looking.
MBL87560SEC likes this.

In the Shop so far...
90 420SEL
90 560SEL
05 Crossfire SRT-6
02 AM General H1
Das 420 is offline  
post #109 of 169 (permalink) Old 04-16-2019, 09:15 AM
Moderator
Outstanding Contributor
 
MBL87560SEC's Avatar
 
Date registered: Jul 2004
Vehicle: 1991 500SEC sub 50K mi. 1987 560SEC Now 150K mi. 2018
Location: Boston, MA area
Posts: 3,804
Mentioned: 18 Post(s)
Quoted: 398 Post(s)
Lifetime Premium Member
Garage
Quote:
Originally Posted by Das 420 View Post
Im getting ready to install my Try-y's so ive been following this thread, with the understanding that they are a tight fit on our cars.

Im wondering if the ports got machined at a slight angle, just 0.5-1 deg of offset angle when machining the flanges could possibly cause 1/2" or more of in/out movement at the collector flange.
*[For clarity, it was the exhaust manifold flanges that were ground.]*

Hey Das, I could be wrong, and I believe what you said above is a distinct possibility here. As you say, the slightest deviation from 'plane' will amplify as the distance grows...

Quote:
Originally Posted by Das 420 View Post
On a side note, what are the recommended bolts to be used on the heads when mounting the manifolds. Do folks just order up original mb, or go with something different like a stainless bolt with stainless washers? I prefer not to reuse the originals as they are not the best looking.
There are studs on the bottom, bolts on the tops. Thanks to the generosity of the fellow BW member I obtained my headers/downpipes from [Alydon], I used all new Mercedes hardware to mount them & downpipes, to the car

MBL


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

91 500SEC EURO Germany
87 560SEC USA 49 State Version

Last edited by MBL87560SEC; 04-16-2019 at 06:59 PM.
MBL87560SEC is offline  
post #110 of 169 (permalink) Old 04-16-2019, 04:07 PM
Lifetime Premium Member
 
Stutz's Avatar
 
Date registered: Oct 2009
Vehicle: 1999 500SL, 1988 SEC
Location: Rochester Hills, MI
Posts: 968
Mentioned: 17 Post(s)
Quoted: 239 Post(s)
Lifetime Premium Member
Das420, I used all studs just to make sure I did not strip any threads. Seemed to work ok. Purchased them from MB but would think any exhaust brand stud would work
Stutz is online now  
Sponsored Links
Advertisement
 
Reply

  Mercedes-Benz Forum > Mercedes-Benz Sedan Forums > W126 S,SE,SEC,SEL,SD,SDL Class

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Mercedes-Benz Forum 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











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Topic Author Forum Replies Last Post
Custom Tri Wye Headers for $1200.00 - Who wants a set? mclare W126 S,SE,SEC,SEL,SD,SDL Class 77 01-16-2014 10:55 AM
M117 SLC - Will Tri Y headers fit??? StreekG R/C107 SL/SLC Class 3 12-06-2009 12:30 PM
ECU Tuning Options Williams707 C208/A208 CLK-Class 30 11-10-2009 09:24 PM
R107 M117 Tri Y headers and Down Pipes jhodg5ck For Sale/Wanted/Trade/Giveaway 5 10-07-2009 02:26 PM
Open down pipes on tri y AMG cast headers jhodg5ck W126 S,SE,SEC,SEL,SD,SDL Class 10 08-08-2005 09:11 AM

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

 

Title goes here

close
video goes here
description goes here. Read Full Story
For the best viewing experience please update your browser to Google Chrome