Ebay manifolds - now usiing schedule 10 mild steel

[dannyn424]

Did anyone notice that the new copies are using thicker schedule 10 mild steel 3mm to 3.5mm thickness? Would these still crack?
Some other options are srm, kkd, and wagners. TIA

[landfill]

Don't waste your money. Can't go wrong
with the stockers. The only aftermarket
mass produced manifolds that are worth
using are wagners because they are cast
just like stock ones. So spend $1700 or don't
waste your time.

[Monty23]

Stock manifolds are welded, not cast.

[Bordom]

Cracks with schedule 40 SS manifolds are few and far between. Schedule 10 is just not durable enough for high heat applications

Everything graciously mispelled by Android

[NOTORIOUS VR]

Did anyone notice that the new copies are using thicker schedule 10 mild steel 3mm to 3.5mm thickness? Would these still crack?
Some other options are srm, kkd, and wagners. TIA

Chinese steel and poor welding techniques is where the issue is.

Even with good steel, many domestic manifolds/fabricators just don't weld/prep correctly and 90% don't back purge so tubular manifolds will eventually crack. Just the way it is.

Stock manifolds are certainly not cast as been said here.. They're tubular with a 2nd layer of heat shielding on top of he tubing.

[jimmer009]

The stock manifolds only have an inside diameter of about 3/4 of an inch. But it does not seem to be a problem with people running big turbos or power with them. I bought the eBay blanks. I have had good results so far. About a year now. No cracks any problems.

[NOTORIOUS VR]

The stock manifolds only have an inside diameter of about 3/4 of an inch. But it does not seem to be a problem with people running big turbos or power with them.

stock manifolds are a restriction for sure... just because people do it, doesn't mean you should.

[23psi]

Mild steel sounds good to me. What's next medium and then hot? Lol

[Zba]

Mild steel sounds good to me. What's next medium and then hot? Lol

Make sure to wash your hands REALLY WELL before going to the bathroom

[Drehmoment]

MTM, Loba and Wagner offer(ed?) cast manifolds.

The current trend in Europe is this fabricator https://www.facebook.com/46395810705...type=3&theater or here with the wastegates mounted https://www.facebook.com/46395810705...type=3&theater

[themadscientist]

MTM, Loba and Wagner offer(ed?) cast manifolds.

The current trend in Europe is this fabricator https://www.facebook.com/46395810705...type=3&theater or here with the wastegates mounted https://www.facebook.com/46395810705...type=3&theater

Those looks really good. I'm curious how easy they are to get on and off though.

[julex]

Those looks really good. I'm curious how easy they are to get on and off though.

I see what you're talking about. Some studs are squarely under the manifold tubing...

[NOTORIOUS VR]

Why are you expecting to take them off with every oil change?

[aysix]

I believe these are chinese sh 10 manifolds in question. I put on a motor about two years ago. I couldn't tell you the durability but they seemed good. The problem wasn't getting them on or off, but actually seating the motor in the engine bay. You gotta bang on those frame rails to seat the motor.

[landfill]

Yea my bad I was thinking of my
5 cylinder manifolds. Bottom line
is the factory manifolds for the most
part will not crack and they've been
proven to handle over 650awhp. Also
yes I forgot but drehmoment brought
it up that Loba and MTM makes cast
manifolds as well as Wagner.

- - - Updated - - -

Julex makes good power on stockers.

[NOTORIOUS VR]

Yea my bad I was thinking of my
5 cylinder manifolds. Bottom line
is the factory manifolds for the most
part will not crack and they've been
proven to handle over 650awhp. Also
yes I forgot but drehmoment brought
it up that Loba and MTM makes cast
manifolds as well as Wagner.

- - - Updated - - -

Julex makes good power on stockers.

peak power numbers get thrown around here too much... and people settle with sub par parts on these motors because aftermarket is either expensive to purchase, or not made at all, or people are scared of failures.

After a certain power level, things like intake and exhaust flow, cams, piping, etc all make a difference. For some reason this has been elusive to the B5 S4 group with people always coming up with excuses to stay with stock. Then they have cars that make a peak number on the dyno but don't perform on the street. Engine breathing, reduction of EBP and EGT are big things that are overlooked here far too often.

[dannyn424]

These are what I was talking about for refernce:

https://www.google.com/aclk?sa=L&ai=...Q9A4Ibg&adurl=

and here:

https://www.google.com/aclk?sa=L&ai=...Q9A4IaQ&adurl=

[NOTORIOUS VR]

These are what I was talking about for refernce:

https://www.google.com/aclk?sa=L&ai=...Q9A4Ibg&adurl=

These look decent!

[JPM-Engineering]

Exhaust manifolds DO work..Im using the wagner at the moment and with 10 degrees C more my car does trap 117 mph on k03... with the racelogic, never got this trap speed before the manifold , Im going to put rs4 cams , test then the complete rs4 intake.
Regards.

[Zba]

Draw straws to see who's going to try the ebay manifolds? Who's engine is already out?

[landfill]

@Notorious I completely agree but alot
of b5 enthusiasts do simple builds. IE F21's,
k24's, k04 framed turbos with a couple bolt
ons. I think the guys going big single or 770,
TTE, GTX etc could always benefit from larger
everything lol. The people that aren't afraid
of breaking shit are the ones that come on here
and post some bad ass 1/4 and vbox times.

[DxC]

haha these are the old franken manis, and ive run these and sold these as well. they are schedule 80 not schedule 10. they are heavy as hell and work great

[aysix]

haha these are the old franken manis, and ive run these and sold these as well. they are schedule 80 not schedule 10. they are heavy as hell and work great

Cheap too

[christianb5s4]

I would've been down to try these on my build, heck if I have to yank the engine out again I am up for trying these. I'd have them ceramic coated prior to installation though.

[Zba]

haha these are the old franken manis, and ive run these and sold these as well. they are schedule 80 not schedule 10. they are heavy as hell and work great

Are we talking the first link or the second?

[dannyn424]

The top one, look how thick it seems

[aysix]

They are thick.

[Bordom]

I would've been down to try these on my build, heck if I have to yank the engine out again I am up for trying these. I'd have them ceramic coated prior to installation though.

You should also have them stress relieved at the same time, for added insurance

Everything graciously mispelled by Android

[Drehmoment]

Are we talking the first link or the second?

They look the same except the paint, 3 mm is like what a 1/8 of a inch,

[OllieOxenFree]

Second link is just the xspower header. You can see the tag in the picture. The first link has a far better appearing collector where the 3 head pipes meet than the xs unit.

[Zba]

Better appearing? You think the bulkier XS Power unit will have fitment issues? Not as smooth merging in the merge collector? What do you think is better about it?

[OllieOxenFree]

Better appearing? You think the bulkier XS Power unit will have fitment issues? Not as smooth merging in the merge collector? What do you think is better about it?

IMO the y style merge looks better than the what appears to be a hammer to fit collector on the xs power header

EDIT: Ya, you pretty much nailed my feeling about not as smooth of a merge.

[dannyn424]

so who bought the header?

[ruiz]

Has anybody tried these out with success of not cracking?

[ruiz]

Well I guess I'll be the test mule and put em through the ringer depending on cost for a custom set from my co-worker.

[mikeb17]

Cracks with schedule 40 SS manifolds are few and far between. Schedule 10 is just not durable enough for high heat applications

Everything graciously mispelled by Android

This is completely false. A properly welded schedule 10 won’t crack. It comes down the quality of the fabrication, not the thickness of the material. Welds crack, not the material.

- - - Updated - - -

Oh wow I didn’t even realize that this thread is old lol.

[LightningLou]

Well I guess I'll be the test mule and put em through the ringer depending on cost for a custom set from my co-worker.

https://www.audizine.com/forum/showt...hese-manifolds

I made a thread about this awhile ago with some decent info... You’re welcome and please excuse the donkey dick at the end lol.

[ruiz]

I read that thread and a bunch of others regarding manifolds but nobody has really said they're a solid piece that hasn't cracked. I can get my hands on a set for about $260 but I might just source some lowish mileage stockers and ceramic coat them.

Sent from my LG-H901 using Tapatalk