Black & Tan 332iT

[Bry5on]

What is a shear plate?

That aluminum plate that ties the subframe to the frame rails. Which reminds me, I also want to design a flat sheet to close that M3 plate out and stiffen it up like the non-m plate

[George Hill]

I guess one of us needs to scan an s54 without headers installed with the shear plate....

What is a shear plate?

[Bry5on]

Unfortunately it makes no torque lol. HTE couldn't get it to make any power up top but I have some graphs from similar setups make a ton of HP up top (Epic Tune) so I'm not sure what the problem was. The consensus seems to be the 2-1 merge kills the torque but makes the noise so I'm conflicted haha. I was thinking about making a second 2-1 merge that is either bigger or to carry it out longer.

I think this kit is for an E36 and I've made it work in the E46 chassis. I don't know how different it is from his E46 kit (or if there is a difference at all), but it would be hard to package in an E46. This one is going to require a custom A/C line (and I had to cut the metal partition).

I guess one of us needs to scan an s54 without headers installed with the shear plate...

Modeling equal length headers shouldn't be very tough and there are a few online suppliers that do custom mandrel bent tubing nowadays. Should be a lot easier now than it was back in the 2000s and 2010s.

[George Hill]

"Was that a flame? Oh, yeah, well of course there's an exhaust pipe coming from the side skirt."

That 6-to-1 looks so good... tempting.

Haha, ya its ridiculous but so much fun. I'm trying to tame it down without losing its character though. And its splitting hairs but its actually a 6 - 2 - 1

wow that sounds buttery smooth, almost more like an s38 than an s54. Always preferred the s38 exhaust note. I like it!

Unfortunately it makes no torque lol. HTE couldn't get it to make any power up top but I have some graphs from similar setups make a ton of HP up top (Epic Tune) so I'm not sure what the problem was. The consensus seems to be the 2-1 merge kills the torque but makes the noise so I'm conflicted haha. I was thinking about making a second 2-1 merge that is either bigger or to carry it out longer.

I think this kit is for an E36 and I've made it work in the E46 chassis. I don't know how different it is from his E46 kit (or if there is a difference at all), but it would be hard to package in an E46. This one is going to require a custom A/C line (and I had to cut the metal partition).

[Bry5on]

https://www.youtube.com/watch?v=mLs6hziC6is

So lazy with the 6MT and 3.15 diff, lol

https://www.youtube.com/watch?v=s6XZn8W12wk

wow that sounds buttery smooth, almost more like an s38 than an s54. Always preferred the s38 exhaust note. I like it!

[bmwfnatic]

Ok - very cool...

"Was that a flame? Oh, yeah, well of course there's an exhaust pipe coming from the side skirt."

That 6-to-1 looks so good... tempting.

David

One would think you have enough headers by now

[davidinnyc]

https://www.youtube.com/watch?v=mLs6hziC6is

So lazy with the 6MT and 3.15 diff, lol

https://www.youtube.com/watch?v=s6XZn8W12wk

Ok - very cool...

"Was that a flame? Oh, yeah, well of course there's an exhaust pipe coming from the side skirt."

That 6-to-1 looks so good... tempting.

David

[George Hill]

https://www.youtube.com/watch?v=mLs6hziC6is

So lazy with the 6MT and 3.15 diff, lol

https://www.youtube.com/watch?v=s6XZn8W12wk

[Bry5on]

The only reason I initially S54 swapped my wagon was because I had a set of Kromer Kraft headers. They were old and tired but sounded amazing. They needed some repair and were pulled in favor of a "temporary" euro setup. I think that was 4yrs? ago, lol. My spring goal is to get them back on and I'm probably going to make a muffler to quiet everything down as I can't really buy anything I like at least that I can find.

Going from E36 to ZHP, I think there's room on the table to make more power and be similar sound level even if you are guessing at some parts of the design. IIRC we saw a ZHP left 15whp on the table vs a Stromung conversion muffler, Dinan or BMW Performance mufflers (E36 was even more than that).

What’s special about the kromer Kraft? Are they true equal length, stepped? The more of those things, the smoother and higher pitched the sound

[Bry5on]

Stromung so underrated in tone. Love mine on the e36


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The e36 stromung is way larger than the e46 one unfortunately. Plus even the e36 one is a bit boomier which comes through a lot more with the wagon than a sedan/coupe. Agree that the e36 stromung sounds good on an s54 converted e46 sedan or coupe though

[George Hill]

Stromung so underrated in tone. Love mine on the e36

Too loud for a nice daily driver IMO

*TBF I talked to Stromung when they first developed them and they said they couldn't make it quieter because there wasn't enough room to make it a bolt on to the factory section 2. If you took that out of the equation they could make it quieter but wasn't really in the scope of what they were trying to offer.

[fattycharged]

Stromung so underrated in tone. Love mine on the e36


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[George Hill]

In the back of my mind however I still want to do a true equal length stepped header that’s equal length at the section 1-2 joint. Just for the noise.

The only reason I initially S54 swapped my wagon was because I had a set of Kromer Kraft headers. They were old and tired but sounded amazing. They needed some repair and were pulled in favor of a "temporary" euro setup. I think that was 4yrs? ago, lol. My spring goal is to get them back on and I'm probably going to make a muffler to quiet everything down as I can't really buy anything I like at least that I can find.

Going from E36 to ZHP, I think there's room on the table to make more power and be similar sound level even if you are guessing at some parts of the design. IIRC we saw a ZHP left 15whp on the table vs a Stromung conversion muffler, Dinan or BMW Performance mufflers (E36 was even more than that).

[Bry5on]

I hate slip fit connections, so terrible for working on "used" exhausts. I always smear them with anti seize and that seems to just only kind of help, ugh.

Im kind of surprised you haven't decided to make your own muffler haha.

I looked into purchasing exhaust modeling software but it’s prohibitively expensive unfortunately. Not worth attempting to guess and check there. Ha!

In the back of my mind however I still want to do a true equal length stepped header that’s equal length at the section 1-2 joint. Just for the noise.

[George Hill]

I hate slip fit connections, so terrible for working on "used" exhausts. I always smear them with anti seize and that seems to just only kind of help, ugh.

Im kind of surprised you haven't decided to make your own muffler haha.