How to build a top mount manifold with minimal warpage
Thread Starter
0.0 BAR
Joined: Oct 2003
Posts: 0
How to build a top mount manifold with minimal warpage
1. build your collector. i don't have any pics of building my collector, but space is sometimes an issue with top mounts so i decided to go with something a little more unconventional.
2. place your collector where you want it in relation to the head flange and start making your first runner. i decided to go with runner #3 since i knew it would be the most difficult to route.
3. tack it all together and then weld the runner, but not the pipe joining the runner to the head flange.
4. do the same for each of the remaining runners.
next runner:
5. once you have the runners all welded, bolt the head flange to a thick plate or head that isn't being used. i use a 2"x3" piece of steel that i drilled and tapped the head flange bolt pattern into to prevent warping.
6. weld the insides of the pipe to head flange seams to help prevent cracking.
finished product:
you can see there is a little bit of warp, but not much.
the external wg will go on afterwards.
2. place your collector where you want it in relation to the head flange and start making your first runner. i decided to go with runner #3 since i knew it would be the most difficult to route.
3. tack it all together and then weld the runner, but not the pipe joining the runner to the head flange.
4. do the same for each of the remaining runners.
next runner:
5. once you have the runners all welded, bolt the head flange to a thick plate or head that isn't being used. i use a 2"x3" piece of steel that i drilled and tapped the head flange bolt pattern into to prevent warping.
6. weld the insides of the pipe to head flange seams to help prevent cracking.
finished product:
you can see there is a little bit of warp, but not much.
the external wg will go on afterwards.
0.0 BAR
Joined: Mar 2004
Posts: 0
Re: How to build a top mount manifold with minimal warpage
I have never had an issue with any warp building a top mount. Do you completely bolt the head flange down while welding it on? I always bolt it down to my jig plate very tight using all the mounting holes.
Thread Starter
0.0 BAR
Joined: Oct 2003
Posts: 0
Re: How to build a top mount manifold with minimal warpage
Originally Posted by CSaddict
I have never had an issue with any warp building a top mount. Do you completely bolt the head flange down while welding it on? I always bolt it down to my jig plate very tight using all the mounting holes.
3.0 BAR
Joined: Mar 2006
Posts: 5,631
Re: How to build a top mount manifold with minimal warpage
Originally Posted by CSaddict
I build #2 first, then #1, then #4, and then #3. But the design is different.
?
3.0 BAR
Joined: Mar 2006
Posts: 5,631
Re: How to build a top mount manifold with minimal warpage
Originally Posted by CSaddict
I have the b series top mount I just made up there cheap. I need to pay off my new welder so what I ever I build needs to go fast to get it paid off.
Where do you get your merge collectors.. and if you build em, how much for a t4 sch 40 one shipped to 98107
That one is clean as ----....
0.0 BAR
Joined: Mar 2004
Posts: 0
Re: How to build a top mount manifold with minimal warpage
Yeah I make them myself. They take forever to cut on my band saw. I don't sell them seperate. You wouldn't want to pay what I would have to charge... They the majority of my time build the manifold.
