Nonsense Thread

[2mAn]

So, how much do you get from BaT annually?

Just headaches lol... I actually applied for a job to help clean up their mess. No response

Ironically Im here cleaning up messes all the time and get paid the same. zero

[moatilliatta]

I hope to have some updates soon. I repainted my floor, and breaking in new motor next week on the dyno, then swapping to ITBs, remap on dyno. Did morimoto H1 projector and laminx, picking up full carbon hood this weekend! Can’t wait to The Vintage break week. Been doing 3-5h sleep nights for too many week strait.

[2mAn]

moatilliatta do you have a goal in mind as far as power?

[moatilliatta]

300 whp

[2mAn]

300 whp

Thats pretty good. A lot of the modified S52s I see on BaT with dyno's dont get to that, but they arent nearly as modified as yours

[MrBurgundy]

I would need new tires every couple months with 300whp lol

[Northern]

I think the most of the legacy NA build S52s cap out in the 260s whp.
That's with the classic "sunbelts, 11:1, euro maf" kind of combo, so hopefully the ITBs and the extra effort net you some significant gains.
At this point I'd be surprised if there's anything I can say that would be news to you though lol

[moatilliatta]

I got 260 on the S50 with terrible cam timing.

It’s still S50 just now with 11.5 cp pistons and 140mm rods and room to set cams up to the cam card.

the sunbelt kits on stock s52 bottom ends I’ve herd will do 275. That’s what’s most the hot BMW CCA IP cars were running.

I think the ITB kit on a stock motor is worth close to 15-20 HP.

[moatilliatta]

I like news, spill it.

[varg]

300whp NA in an E30 sounds amazing. How high will that engine rev? The ATI damper hints at some 8,000rpm action. I was initially building my wagon's bottom end for an 8,000rpm future, mimicking Nisse Jarnet's build. I decided $950 for a damper, $1200 for cams, and probably $3,000 in head work wasn't worth turning my daily driven 3,700lb wagon into a gutless wonder with no low end because the cams killed torque off boost and required VANOS lockout. What good is 750whp on E85 when I'll probably barely be able to put 600whp down with my barely streetable rear tires.

I would need new tires every couple months with 300whp lol

With good tires you have to go out of your way to break them loose at 300whp, especially with NA torque. 200TW summer tire enjoyers rise up

[Northern]

^ Remember he used a stock M54 damper (I assume the one-piece version) but yeah, that's still just a drop in the bucket.

Edit: Thinking about the white RWD car, not the iX. Not sure about that one.

[varg]

It's also a 2.8, not a 3L. Conventional wisdom is that the M54/S52 crank is... unhappy... above 7,200rpm.

[2mAn]

With good tires you have to go out of your way to break them loose at 300whp, especially with NA torque. 200TW summer tire enjoyers rise up

Its quite surprising how much of a difference the tires can make

[Northern]

It's also a 2.8, not a 3L. Conventional wisdom is that the M54/S52 crank is... unhappy... above 7,200rpm.

I think the popular theory is that the 3.2's second harmonic is just low enough that it becomes a problem.
Easy enough to prove but I don't think anyone has done it.

[varg]

What surprises me is how often I see people with lame-o tires when they've dumped thousands into performance mods for the car.

I think the popular theory is that the 3.2's second harmonic is just low enough that it becomes a problem.
Easy enough to prove but I don't think anyone has done it.

Vibration analysis requires some fairly cheap equipment and some basic knowledge, and it won't tell you much more than amplitude of the peaks and where they are. Torsional deflection analysis (which is relevant here) requires expensive equipment and more knowledge. It's not likely anyone who builds engines as a hobby is going to do that. FEM of the crank itself is also not easy and would be quite expensive because of the software requirements unless we find an engineering student or an engineer who can load the models up at work (I can't).