24V = smithereens after 50 hours of racing

[Wanganstyle]

Not exactly the same, but our all stock, never rebuilt Chump raced M42 has had just over 70 hours on track (and has been crashed/reinstalled in a new shell) after being used on the street for ~130k miles. It made good enough power to get 4th at Daytona last year.

When you rebuilt it what did you do with the valves?

Considering how closely these two engines are related I simply wonder if was simply down to you run solid mounts, we run rubber?

Best of luck with the repairs.

M42 has better parts for springs; they are shared with s52 and s62

11341403709

[TobyB]

valve spring retainers are not strong enough for over 7,000 rpm redline

A local bunch found that out, too...

t

[roguetoaster]

Not exactly the same, but our all stock, never rebuilt Chump raced M42 has had just over 70 hours on track (and has been crashed/reinstalled in a new shell) after being used on the street for ~130k miles. It made good enough power to get 4th at Daytona last year.

When you rebuilt it what did you do with the valves?

Considering how closely these two engines are related I simply wonder if was simply down to you run solid mounts, we run rubber?

Best of luck with the repairs.

[Wanganstyle]

Guys, the reality is that 50 hours of racing is pretty good. Not great, but pretty good for a motor that was tossed together.

not really tossed togeather; this is a proper lemons engine and probably very close to the average r3vswap 24v;

an unknown prior life junkyard engine that had no non bolt on new parts added - for it to live 50 hours and implode is pretty damm good.

[whodwho]

the vorshlag style through-bolt mount with poly sandwiched between metal cups is probably the best approach I've seen.

nahh, got to go with hockey pucks - true Lemons style!!

[kronus]

yessir! good friend of mine. Ive known him since my VW days!

awesome, he's a great guy. (but no, that's not his rabbit. I did encounter it on track once last weekend, they blew our doors off, that thing is absurdly quick now)

[2mAn]

sometimes-judge shawn rogers? I know that guy!

yessir! good friend of mine. Ive known him since my VW days!

Guys, the reality is that 50 hours of racing is pretty good. Not great, but pretty good for a motor that was tossed together.

this is true.

[kronus]

for real, it's a lot better than I've been getting out of our raced M30s. oil starvation in left handers is a bitch.

[nrubenstein]

Guys, the reality is that 50 hours of racing is pretty good. Not great, but pretty good for a motor that was tossed together.

[dirty30]

I wish everyone would take this thread more seriously, I mean this is LEMONS we are talking about here. News of this engine failure could make it to BMW AG, and then what? Some corporate heads are gonna roll thats what.

[kronus]

sometimes-judge shawn rogers? I know that guy!

[2mAn]

Is the Rabbit the one with the VR6? My buddy Shawn is part of that team

[kronus]

probably less, but not by much. Haven't weighed it, probably would be good to at least corner weigh the fucker.

here's eyesore's flight:

[Wanganstyle]

:rofl: how did that happen??

somebody say yellow flag?


Oh, doh it was important! but the eyesore racing driver was very intensely concentrating on passing 10 cars on the inside turn 1 lol

the 24v e30 with full 22gal cell and loaded with coolsuit ice chest was only 2560lbs with 180lbs driver included. quite a party

kronos what does your truckasaurous weigh in at? id imagine less?

[2mAn]

:rofl: how did that happen??