Return to the home page...

Go Back   Moyer Marine Atomic 4 Community - Home of the Afourians > Discussion Topics > Exhaust System

Reply
 
Thread Tools Display Modes
  #1   IP: 148.170.241.1
Old 09-26-2011, 01:20 PM
ILikeRust's Avatar
ILikeRust ILikeRust is offline
Afourian MVP
 
Join Date: Sep 2010
Location: Henrico, VA
Posts: 2,202
Thanks: 2
Thanked 23 Times in 21 Posts
Where did you get 1-1/4" black iron pipe and fittings?

I've determined that I need to cobble up a hot section, which the boat did not have when I bought it. What it has is a short section of curved, double-walled bronze pipe, where the water injects and then mixes with the exhaust as it exits:





This was attached directly to the exhaust port of the manifold. Then a short section of exhaust hose went from the tail end of this pipe to the Vetus waterlift muffler.

However, upon re-installing it, I have determined that it's simply not a good setup, based on everything I've read and the diagrams I've seen of how a waterlift muffler is supposed to work. The problem is that the end of that pipe is lower than the inlet to the Vetus. So the short section of hose has to head down and then curve sharply back up to connect to the inlet of the Vetus. This am no good.

So I'm going to replace it with a short hot section. I want to use black iron.

I've looked at Lowe's, Home Depot, and the local family-run hardware store that has been in business in Richmond for something like 100 years.

Nobody has much in the way of 1-1/4" black iron pipe or fittings. I can get all the galvanized stuff I could possibly carry. But black iron, in 1-1/4" size, is pretty hard to find. Lowe's has a couple elbows, but no actual pipe or nipples. They have plenty of stuff in 1" and smaller, but nothing in 1-1/4". Home Depot didn't have anything at all.

I'm going to run over to a local plumbing supply place I found by Googling. I called the guy and he said he had some stuff and I should come over and see what he's got and "bring your list." I'll do that right after lunch today.

If that doesn't work out, I'll have to keep digging for another plumbing supply house.

So where did you get your 1-1/4" black iron pipe, if you in fact used that for your hot section?
__________________
- Bill T.
- Richmond, VA

Relentless pursuer of lost causes
Reply With Quote
  #2   IP: 206.125.176.3
Old 09-26-2011, 01:41 PM
sastanley's Avatar
sastanley sastanley is offline
Afourian MVP
 
Join Date: Sep 2008
Location: Solomons, MD
Posts: 7,011
Thanks: 1,126
Thanked 593 Times in 439 Posts
Bill, I got mine at the local Lowe's & Ace Hardware. - I built mine out of galvanized, although they had black pipe too. Dunno why your Lowe's doesn't have it. It's right in the plumbing section!
__________________
-Shawn
"Holiday" - '89 Alura 35 #109
"Twice Around" - '77 C-30, #511 with original A-4 & MMI manifold - SOLD! (no longer a two boat owner!!)
http://www.moyermarine.com/forums/signaturepics/sigpic3231_6.gif
Reply With Quote
  #3   IP: 98.102.216.7
Old 09-26-2011, 02:04 PM
msmith10's Avatar
msmith10 msmith10 is offline
Afourian MVP
 
Join Date: Jun 2006
Location: Columbus, Ohio
Posts: 474
Thanks: 19
Thanked 62 Times in 46 Posts
why not just abandon the 1-1/4" section and build from the manifold flange to the hose with 1-3/4, which is readily available in black iron?
__________________
Mark Smith
1977 c&c30 Mk1 hailing from Port Clinton, Ohio
Reply With Quote
  #4   IP: 148.170.241.1
Old 09-26-2011, 02:47 PM
ILikeRust's Avatar
ILikeRust ILikeRust is offline
Afourian MVP
 
Join Date: Sep 2010
Location: Henrico, VA
Posts: 2,202
Thanks: 2
Thanked 23 Times in 21 Posts
Well it's a moot point now.

Thank you, Richmond Plumbing Specialties!

Funny thing is their website looks all sleek and modern and fancy - meanwhile, the actual store is a dark little place, jam-packed from wall-to-wall and floor-to-ceiling (with lots and lots of stuff also hanging from the ceiling, or any other surface available to be hung from) with just about every kind of plumbing part, fitting, tool, or supply you could envision.

Nice guys, too.

I now have in a box in the back of my truck everything I (should) need to fabricate my hot section. $75 worth of 1-1/4" black iron bits and pieces, and some high-temp never-sieze goop.

Given how heavy this stuff is, I would definitely rather stay with this than go up to 1-3/4". I'm going to have to figure out a way to support all this weight - I don't think I want it just hanging off the manifold studs.
__________________
- Bill T.
- Richmond, VA

Relentless pursuer of lost causes
Reply With Quote
  #5   IP: 173.166.26.241
Old 09-26-2011, 03:50 PM
hanleyclifford's Avatar
hanleyclifford hanleyclifford is offline
Afourian MVP
 
Join Date: Mar 2010
Posts: 6,955
Thanks: 166
Thanked 266 Times in 215 Posts
Talking

Bill - You need to cobble a nice headstay from pipe hanger bracket and threaded rod with a turnbuckle for adjustment. Never let that weight bear on your manifold casting.

Last edited by hanleyclifford; 07-13-2016 at 09:33 PM.
Reply With Quote
  #6   IP: 148.170.241.1
Old 09-26-2011, 04:10 PM
ILikeRust's Avatar
ILikeRust ILikeRust is offline
Afourian MVP
 
Join Date: Sep 2010
Location: Henrico, VA
Posts: 2,202
Thanks: 2
Thanked 23 Times in 21 Posts
Yup. I was planning on rigging up something to bear the weight.

Funny thing is that your hot section there looks very much similar to what I'm planning on cobbling together. Including the T for water injection.
__________________
- Bill T.
- Richmond, VA

Relentless pursuer of lost causes
Reply With Quote
  #7   IP: 173.166.26.241
Old 09-26-2011, 04:18 PM
hanleyclifford's Avatar
hanleyclifford hanleyclifford is offline
Afourian MVP
 
Join Date: Mar 2010
Posts: 6,955
Thanks: 166
Thanked 266 Times in 215 Posts
Talking

Also, don't forget the "shroud" for complete steady support.

Last edited by hanleyclifford; 07-13-2016 at 09:33 PM.
Reply With Quote
  #8   IP: 174.65.54.224
Old 09-26-2011, 08:36 PM
jpian0923's Avatar
jpian0923 jpian0923 is offline
Afourian MVP
 
Join Date: Sep 2010
Location: San Diego
Posts: 976
Thanks: 0
Thanked 2 Times in 2 Posts
Bill, what are you going to do with you old setup? I'll take it off your hands.
__________________
"Jim"
S/V "Ahoi"
1967 Islander 29
Harbor Island, San Diego
2/7/67 A4 Engine Block date
Reply With Quote
  #9   IP: 173.166.26.241
Old 09-26-2011, 08:40 PM
hanleyclifford's Avatar
hanleyclifford hanleyclifford is offline
Afourian MVP
 
Join Date: Mar 2010
Posts: 6,955
Thanks: 166
Thanked 266 Times in 215 Posts
Talking

Bill - That short section of copper pipe is probably the remnant of a once magnificent jacketed system that ran all the way to the transom. You are right, however, to reject it now because it has no "riser" component.
Reply With Quote
  #10   IP: 75.68.130.228
Old 09-26-2011, 09:13 PM
smosher smosher is offline
Afourian MVP
 
Join Date: Jun 2006
Posts: 489
Thanks: 0
Thanked 33 Times in 32 Posts
Hanley, on your water out of the manifold, are you plumbing that to the intake.

I assume to raise engine temp with no thermostat,

Is that right ?

Steve
Reply With Quote
  #11   IP: 107.0.6.242
Old 09-26-2011, 09:56 PM
hanleyclifford's Avatar
hanleyclifford hanleyclifford is offline
Afourian MVP
 
Join Date: Mar 2010
Posts: 6,955
Thanks: 166
Thanked 266 Times in 215 Posts
Talking

Actually that configuration is now obsolete. I have incorporated the Tom Thatch Modification so the thermostat now sits at the forward end of the manifold. I do run the Dole thermostat. The valve provides the same function as the one Moyer Marine sells (usually for the late heads), that is, positive shut off of the by- pass loop.

Last edited by hanleyclifford; 07-13-2016 at 09:32 PM.
Reply With Quote
  #12   IP: 96.228.21.70
Old 10-03-2011, 09:26 AM
ILikeRust's Avatar
ILikeRust ILikeRust is offline
Afourian MVP
 
Join Date: Sep 2010
Location: Henrico, VA
Posts: 2,202
Thanks: 2
Thanked 23 Times in 21 Posts
Quote:
Originally Posted by jpian0923 View Post
Bill, what are you going to do with you old setup? I'll take it off your hands.
Send me your snail mail addy via PM and I'll pack it up.
__________________
- Bill T.
- Richmond, VA

Relentless pursuer of lost causes
Reply With Quote
Reply

Thread Tools
Display Modes

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
What's my first step here? Baltimore Sailor Exhaust System 54 05-01-2011 08:18 PM
Hot Pipe Material Redux ndutton Exhaust System 17 02-25-2011 04:49 PM


All times are GMT -4. The time now is 09:18 AM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2024, vBulletin Solutions, Inc.


Universal® is a registered trademark of Westerbeke Corporation

Copyright © 2004-2024 Moyer Marine Inc.

All Rights Reserved