Re: Gonna build some log manifolds HELP!!!!!!!
[Re: feets]
#742151
07/12/10 05:36 PM
07/12/10 05:36 PM
|
Joined: Jan 2005
Posts: 2,540 Milwaukee WI
TRENDZ
master
|
master
Joined: Jan 2005
Posts: 2,540
Milwaukee WI
|
The slip joints need to be in the tubing. I also suggest every time this comes up, adding stud holes at the center ports. The headers I built used the extra studs, but had a one piece 3/8" flange. No split in the flange between the ports. I had ZERO problems with them.
"use it 'till it breaks, replace as needed"
|
|
|
Re: Gonna build some log manifolds HELP!!!!!!!
[Re: 67_Satellite]
#742154
07/16/10 11:36 AM
07/16/10 11:36 AM
|
Joined: Jan 2003
Posts: 28,069 Irving, TX
feets
Senior Management
|
Senior Management
Joined: Jan 2003
Posts: 28,069
Irving, TX
|
Quote:
Built mine with all the "tricks". 1/2" flange split between center and outter ports,oversize stud holes,copper gasket with copper spray on the head side and liberal amounts of anti-sieze on the manifold side. So far so good,but time will tell.
My headers are well seasoned. Unlike drag cars, mine get hot and stay hot. They have run more than 12,000 miles of cruising, racing, and everything else cars go through. I've had to repair a few cracks over the last 6 years.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
|
|
|
Re: Gonna build some log manifolds HELP!!!!!!!
[Re: RockChip]
#742156
07/21/10 03:04 AM
07/21/10 03:04 AM
|
Joined: Jul 2010
Posts: 3,502 SOUTH JERSEY
HEMIFRED
master
|
master
Joined: Jul 2010
Posts: 3,502
SOUTH JERSEY
|
for the body of the log try to stay as close as possible to the size of the opening on the turbo. that way there's no harsh steps to alter exhaust gasses
home of the Sox and Martin Hemi Duster
|
|
|
Re: Gonna build some log manifolds HELP!!!!!!!
[Re: RockChip]
#742158
07/25/10 04:27 AM
07/25/10 04:27 AM
|
Joined: Dec 2005
Posts: 96 Australia
gg408
member
|
member
Joined: Dec 2005
Posts: 96
Australia
|
Here is a pic of mine that i just started doing. Hope they work or I will be making headers next. Feel free to citique them anyone as I'm not to sure if im doing the right thing. The primaries are 1.500" id and the log is 2.00 id. using a BW S480 on a 410 SB hoping to make around 850 fwhp. Cheers gg408
|
|
|
Re: Gonna build some log manifolds HELP!!!!!!!
[Re: gg408]
#742159
07/25/10 11:07 AM
07/25/10 11:07 AM
|
Joined: Nov 2003
Posts: 1,969 Chandler, AZ
Duner
top fuel
|
top fuel
Joined: Nov 2003
Posts: 1,969
Chandler, AZ
|
Quote:
Here is a pic of mine that i just started doing. Hope they work or I will be making headers next. Feel free to citique them anyone as I'm not to sure if im doing the right thing. The primaries are 1.500" id and the log is 2.00 id. using a BW S480 on a 410 SB hoping to make around 850 fwhp.
Cheers gg408
Have you checked to be sure you can get the spark plugs in and out yet?
|
|
|
Re: Gonna build some log manifolds HELP!!!!!!!
[Re: RockChip]
#742162
07/25/10 03:21 PM
07/25/10 03:21 PM
|
Joined: Jan 2003
Posts: 28,069 Irving, TX
feets
Senior Management
|
Senior Management
Joined: Jan 2003
Posts: 28,069
Irving, TX
|
Whenever possible, look to the OEMs for input and ideas. They spend millions of dollars designing stuff to last through the warranty period and beyond. Trendz mentioned expansion joints. Take a look at what Merciless Bends did on their long V-12 turbo manifolds. The pics are small but they speak volumes. http://cgi.ebay.com/ebaymotors/MERCEDES-...=item335f457f35
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
|
|
|
Re: Gonna build some log manifolds HELP!!!!!!!
[Re: feets]
#742163
07/26/10 08:00 AM
07/26/10 08:00 AM
|
Joined: Dec 2005
Posts: 96 Australia
gg408
member
|
member
Joined: Dec 2005
Posts: 96
Australia
|
Thanks for the input guys. The spark plugs fit ok and the bonus is I can even fit leads to them. As for the third bolt on centre ports not to sure if it will go through to water, shouldn't be a problem i hope. Was going to mig weld them but tig sounds like a better option so will have to get some one else to do them, will make the suggestion re sheilding gas. Appart from trying to buy some slip joints have you any suggestions on how to make then? Cheers gg408.
|
|
|
Re: Gonna build some log manifolds HELP!!!!!!!
[Re: gg408]
#742165
07/26/10 10:48 AM
07/26/10 10:48 AM
|
Joined: Dec 2006
Posts: 3,533 Indiana
Fury Fan
master
|
master
Joined: Dec 2006
Posts: 3,533
Indiana
|
Quote:
Appart from trying to buy some slip joints have you any suggestions on how to make then?
Cheers gg408.
I've browsed the pipe fitting chart on Mcmaster and I don't see any sizes that can work as-is. The closest I found was 2" Sched 80 pipe (1.939" ID) vs the 1.9" OD of a 1 1/2" pipe (which I suspect most of us would use). I think .039" is too much clearance and would leak (but that's just my hunch).
I suppose a pipe coupling could have its ID opened up in a lathe to match the butt-weld pipe we'd use, but that's not convenient for most of us.
I think an exhaust pipe adapter of the appropriate size could be slid as a shim into the next-size-larger pipe collar. Haven't investigated, but that's the route I'd go.
|
|
|
Re: Gonna build some log manifolds HELP!!!!!!!
[Re: HEMIFRED]
#742168
07/31/10 07:29 AM
07/31/10 07:29 AM
|
Joined: Dec 2005
Posts: 96 Australia
gg408
member
|
member
Joined: Dec 2005
Posts: 96
Australia
|
Quote:
Quote:
Feel free to citique them anyone as I'm not to sure if im doing the right thing. The primaries are 1.500" id and the log is 2.00 id. using a BW S480 on a 410 SB hoping to make around 850 fwhp.
upsetting the cart here. I think the 1.5" I.D. maybe too small as is the 2.0" I do not know the exhaust inlet size of the turbo but the tube should come fairly lose to it
The turbo has a split pulse exaust housing and each side is 1 5/8" x 2 3/8" opening. There will be 2 x 2" id pipes, 1 going to each side of the turbo exh inlet. I'm hoping this will be sufficent for my needs right now.
gg408.
|
|
|
Re: Gonna build some log manifolds HELP!!!!!!!
[Re: 68chargerboy]
#742170
12/15/10 07:40 AM
12/15/10 07:40 AM
|
Joined: Dec 2005
Posts: 96 Australia
gg408
member
|
member
Joined: Dec 2005
Posts: 96
Australia
|
Yep thats the one. Hope u have a strong vice. If you have a oxy set it makes it easier. Cheers gg408
|
|
|
|
|