Originally Posted by 18psi
(Post 1193475)
No brace or crane.
Never broke. What I did have a serious problem with though, was flange warping. Both the turbo and head flanges warped twice. I re-surfaced them and they still warped again. No idea why. Bought the flanges from Weirtec, they were 3/8 iirc, guess I shoulda gone 1/2 |
Originally Posted by aidandj
(Post 1193364)
A little ashamed posting this below hellafab stuff but here are some pictures of my recent manifold build:
] Try to practice the welding... Some looks tig, the rest migged? |
Originally Posted by 18psi
(Post 1193475)
No brace or crane.
Never broke. What I did have a serious problem with though, was flange warping. Both the turbo and head flanges warped twice. I re-surfaced them and they still warped again. No idea why. Bought the flanges from Weirtec, they were 3/8 iirc, guess I shoulda gone 1/2 If the pipes didn't fit well before you welded, they will have even more issues after welding. That's why you hear so much about fit up in the fab world. |
Originally Posted by Lokiel
(Post 1193473)
Why no vertical brace between the arms? A boxed brace is much stronger.
|
Originally Posted by shlammed
(Post 1193500)
Looks good!
Try to practice the welding... Some looks tig, the rest migged? The warpage was mostly me forgetting to bolt it to something. |
Originally Posted by hi_im_sean
(Post 1193512)
On it's own yes, a full triangle is always better. But in this situation it would have been redundant and just added weight as the structure between the hinges creates the vertical. If anything, I would have added a piece perpendicular to the bottom tube up to the top hinge.
Edit: oops you totally said that in the post above. Its too early. |
Originally Posted by aidandj
(Post 1193522)
The part between the hinges without the brace is way stiffer than the other parts. The structure of the unibody is really stiff there which is different from the rest of the fender.
Edit: oops you totally said that in the post above. Its too early. |
Originally Posted by hi_im_sean
(Post 1193526)
its all good lol, thanks for backing me up. but yes, to add to my point, the structure behind the firewall where the hinges bolt is substantial. the idea is to tie that section into the shock tower structures, or as close to, as the area between them is floppy.
|
Originally Posted by aidandj
(Post 1193529)
Also I'm pretty sure that the forces the fender brace are countering are when the front sees compression and flexes up. If this is the case ten the forces will directly in line with the tube. Am I right about my analysis of the forces or do fender braces serve a different purpose?
the upper tube should be in compression with the forces directed from front to rear, and the lower show be in combo bending/tension, or maybe just bending- upwards. edit: actually the lower is a total guess without knowing where the pivot point is. |
6 Attachment(s)
My grandfather and I made some coolant spacers, as I thought they would be a good starter project for me to try my hand at some machine work. And I enjoyed spending the time with him, as they live ~7hrs away and we don't make it up there as often as I'd like to. I have the equipment local to me to make more, just needed some help getting my feet wet. Took it slow, measured lots and took slim layers at a time. Super pleased with how they turned out. Just need to machine the bung and tig it on.
Attachment 238492 Attachment 238493 Attachment 238494 Attachment 238495 Attachment 238496 Attachment 238497 |
4 Attachment(s)
Originally Posted by 18psi
(Post 1193475)
No brace or crane.
Never broke. What I did have a serious problem with though, was flange warping. Both the turbo and head flanges warped twice. I re-surfaced them and they still warped again. No idea why. Bought the flanges from Weirtec, they were 3/8 iirc, guess I shoulda gone 1/2 My manifold did crack though. The location was not someplace I was anticipating, so I'm going to blame it on poor welding. Attachment 238488 But I fixed it and braced it. The outer fix weld looks a little shitty because I didnt do a good enough job getting the ceramic coating off. Attachment 238489 Attachment 238490 Attachment 238491 |
Originally Posted by Schuyler
(Post 1193541)
My grandfather and I made some coolant spacers...
|
Originally Posted by rleete
(Post 1193546)
Nice work. I wish I had the space for full sized machines.
|
Originally Posted by aidandj
(Post 1193520)
All TIG. The fit was really bad. Lots of big gaps. So we used a ton of filler. The warpage was mostly me forgetting to bolt it to something. If the flanges are bolted, even with bad fit up you can still get it to look nice... But there is a high potential for warping with use if you didn't purge and get a full penetration weld. Did you use a gas lens and have post flow set? That will keep your welds looking better if you cover the weld in argon post-flow. M |
Originally Posted by shlammed
(Post 1193587)
I don't like that style of manifold because the mitres required and quite sophisticated to get fitting right On cylinders 2 and 3 besides the compromise from a flow perspective from that design.
If the flanges are bolted, even with bad fit up you can still get it to look nice... But there is a high potential for warping with use if you didn't purge and get a full penetration weld. Did you use a gas lens and have post flow set? That will keep your welds looking better if you cover the weld in argon post-flow. M |
The welds look like that because of no post flow
|
|
Originally Posted by Diamond Dave
(Post 1193855)
I'm not sure how your work was secured when you welded it, but you definitely want that flange bolted to something during the weld to avoid warping.
|
Originally Posted by krazykarl
(Post 1143356)
:
My FIL and I have a somewhat antagonistic relationship, so the fact that it'll be a pita to open is a bonus. : If so, touche! |
Originally Posted by aidandj
(Post 1193856)
It was tacked in about 10 places around the flange.
|
All times are GMT -4. The time now is 06:57 PM. |
© 2024 MH Sub I, LLC dba Internet Brands