Is the ZHP frail?

[Sockethead]

If you're holding at 6k+ be worried.

Horney...via TT.

+1
I've been told by several people that race on a regular basis that sustained high RPMs is what kills it...they said don't take it above 6500 or so. The car doesn't really make any power up there anyway. The tunes that increase the rev limiter are a good way to grenade the motor... not the tune itself... the fact that now you can rev the motor higher than it was designed for....

Problem is that when your racing, your not always looking at the Tach... bouncing off the rev limiter lets you know that your at the upper limit only now with the tune, your well in the danger zone by the time it's bouncing the rev limiter. I would asume that most people that track their cars also have some kind of tune on them too.

BTW I have 120K on my car and have beaten the crap out of it since I bought it at 44K... so far, it's been one of the most reliable cars I've owned

[GMATT]

Drive mine at Watkins Glen International.( see 130 ish on the back strait

...................Usually rev to 6K ish and then shift. Have found in most situations shifting before the limiter is a good way to go................

My $.05 worth

Gary

[Smolck]

Good stuff guys. The only time I typically go to 6800rpm is if I am hammering down on it in 1st and 2nd gears (I have 3.46 diff so it happens quick) and in those instances it isn't there for long at all. I'm just gonna do what I do and if it blows, it blows. Car's paid for anyway, worst case it blows and I spend another $3k and I have a new motor.

[danewilson77]

Good stuff guys. The only time I typically go to 6800rpm is if I am hammering down on it in 1st and 2nd gears (I have 3.46 diff so it happens quick) and in those instances it isn't there for long at all. I'm just gonna do what I do and if it blows, it blows. Car's paid for anyway, worst case it blows and I spend another $3k and I have a new motor.

Sent from Williamsburg, VA USA

[Hermes]

if my motor ever died I would swap a Motorsport engine into it and have a sleeper

[Smolck]

if my motor ever died I would swap a Motorsport engine into it and have a sleeper

By motorsport you mean the S54?

[Hermes]

for a while I was thinking S62 but I just realized I can't legally do that in CA, back to the drawing board...

[midlandtech]

Good stuff guys. The only time I typically go to 6800rpm is if I am hammering down on it in 1st and 2nd gears (I have 3.46 diff so it happens quick) and in those instances it isn't there for long at all. I'm just gonna do what I do and if it blows, it blows. Car's paid for anyway, worst case it blows and I spend another $3k and I have a new motor.

Off topic a bit but what RPM are you turning on the highway with that diff gearing?


~Steve
Sent from my iPhone using Tapatalk

[zhpnsnv]

Yea now that I don't have a highway commute I'm considering the 3.46. In for info.

[cakM3]

if my motor ever died I would swap a Motorsport engine into it and have a sleeper

+1

I would put in an S54 in the ZHP but then I would also complete the entire drive train while I'm at it...

No rebadging would be done....I would still rock the 330i badge on the bootlid...