advice for track car?

[Mike The Bavarian]

You really think two extra cylinders will take the car from 50/50 to 70/30? The difference is a couple percentage points at most.

...and an S50/S52 with mild work done will make 250-280rwhp. That compares pretty well with the 120ish that you'll get out of the M42.

gutted, yes. That's what i heard, atleast.

[Danny]

Crx

[Mike The Bavarian]

You really think two extra cylinders will take the car from 50/50 to 70/30? The difference is a couple percentage points at most.

...and an S50/S52 with mild work done will make 250-280rwhp. That compares pretty well with the 120ish that you'll get out of the M42.

Edit: And now you're suggesting an M42 stroker? For a whopping 140 or so rwhp?

Yes.

[Jean]

Because the us s50 or s52 doesn't make crazy power to justify the cost and time of the swap. And why would you bother getting a 318 to swap a heavy motor in it? I'd just buy a 325, if that's what you want to do.

Why? Because 2300lbs is better than 2800lbs when it comes to tire/brakes use and handling/acceleration period. Otherwise why bother making a car faster, just started with a 325ic and add more weight to it....

[Mike The Bavarian]

Why? Because 2300lbs is better than 2800lbs when it comes to tire/brakes use and handling/acceleration period. Otherwise why bother making a car faster, just started with a 325ic and add more weight to it....

The only real difference between a 318 and 325 is the drivetrain. If you're going to swap it you might as well just start off with a 325...318is's are getting harder to find as is..

[nrubenstein]

gutted, yes. That's what i heard, atleast.

When you say shot like that, try to at least glance at the numbers. Unless you really think the M5x motors are on the order of 500+lbs. heavier than an M42...

[nrubenstein]

Yes.

OK. While I'm not going to claim that a 318 is a bad car to learn on, it's still very slow. I'd rather be (a lot) faster than "perfectly" balanced. That said, building an M42 is nuts.

[Mike The Bavarian]

When you say shot like that, try to at least glance at the numbers. Unless you really think the M5x motors are on the order of 500+lbs. heavier than an M42...

I'm not going to argue with you. You have more experience racing then me; hell...I don't have any. But from what I've HEARD m5x swapped cars when gutted end up with a weight balance around that.

[Fusion]

I can't imagine what you'd have to take off the rear to get it that much lighter.
I have a table of BMW engine weights, probably engine only: (this is in kilos)
M42: 100
M20: 117
M50: 135
M52: 118 euro, 140? us
M54: 126
S50: 152
S52: 152

Provided I have a FG hood that's 12kg lighter than stock, that makes me only 20something kilograms heavier. I'd be pretty damn close with the M52 (alloy block?). Not saying anything about handling, that'll probably depend on how you place the M/S5x, just trying to clear things up a bit.
And if I were to gut my car, I'd start with carpets, lighter front seats, sunroof delete, el. window delete, front window glass delete (if rules allow) etc. Pretty much all things on the front half of the car. I don't think it would be very hard to balance it out nicely.

[Jean]

The only real difference between a 318 and 325 is the drivetrain. If you're going to swap it you might as well just start off with a 325...318is's are getting harder to find as is..

Is that another thing your heard?

[Mike The Bavarian]

Is that another thing your heard?

Well are we talking early or late model? Because beside the different strut sizes and the drive train there's really no difference...

[Jean]

Well are we talking early or late model? Because beside the different strut sizes and the drive train there's really no difference...

I said early vs late up in the previous post. There are more differences than you think, and it all adds up.

[nrubenstein]

I'm not going to argue with you. You have more experience racing then me; hell...I don't have any. But from what I've HEARD m5x swapped cars when gutted end up with a weight balance around that.

If you have no experience, why are you giving bad advice in the track forum?

[Mike The Bavarian]

If you have no experience, why are you giving bad advice in the track forum?

becuase he asked for advise and I gave my input.
And it a forum, I'll do what i want

[Danny]

Oh my gawd. You have no experience but you're giving advice? Bad advice at that. You sir, fail. OP please ignore Mike The Bavarian's posts in this thread, and Mike: don't talk outcha ass boy! Its bad for your health.