How really fast is a S52 or M50 E30...

[D-rock]

I might do an s25 swap or SC for my m50. I am not happy with my m50 its slooow

[graphikg]

Had no trouble with:
996 c2 (5-100)
E46 M3 (40-100)
335i e90 (60-100+)
C5 Vette (60-130ish) -- put up the best fight
Sti's, E39 M5's, 993's (c2)
Brothers 3.2 E30 M3 : )~

If you set them up with the right hot-rod parts, you can really kick some ass in a straight line. My car never hooked up well, so I rarely ran it from a "launch." My 3.0 18is was 235whp (maybe more towards the end) and weighed 2620#. HP peak was 6500 and almost flat-lined to 7200 (lost maybe 1whp), so it was a real freight train from 4300-7200.

My current 18is is ~135whp. Occasionally I miss the 3.0. :)~

No way you beat a 335i. I did a rolling start against one at 60 and it spanked my s52 once we got around 85. It pulled away like a rocket.

[nando]

did you just call out a McHenry boy on a built S50 motor?

[bimmer_E30]

No way you beat a 335i. I did a rolling start against one at 60 and it spanked my s52 once we got around 85. It pulled away like a rocket.

and he mentioned he did that with the M42?

[rneedham1979]

What suspension are you running? I had 225's, m3 springs and konis, mine squats and gets it. A friend of mine has an e36 with 485whp/420trq and I have far better traction then him.

I couldnt imagine my car with a supercharger. I would have to do 3rd gear rolls.

[Fidhle007]

and he mentioned he did that with the M42?

No, he didn't. Shut up.

[BingM3]

No way you beat a 335i. I did a rolling start against one at 60 and it spanked my s52 once we got around 85. It pulled away like a rocket.

Maybe you were in 5th gear:)

[Mr Two]

Or it was heavily modded. A stock 335i is nothing special

[BingM3]

I ran head to head in my E30M3 S50 with an E46M3 at high gears and it held its own (before the supercharger install), have no idea how he got walked by a 335i (unless modded)

[loonibab325i]

lot ta copy over so i will just post the bfc links

http://forums.bimmerforums.com/forum....php?t=1279573 s5 vs s52 e30

http://forums.bimmerforums.com/forum....php?t=1111091 s52 e30 vs JB stg 3 335

[Devin1205]

Easily. Valves, guides, lifters, springs, machine work, pistons, rings, rods, crank if you're going to turbo it... The head alone will probably cost at least a grand. Labor was not factored because I get paid for my labor, that's one of the perks of being a tech. :D

Note, I said "the RIGHT way", not slap a new headgasket in there and call it good. My shop does mainly moderate to high-dollar restorations so I'm not in the habit of cheaping out on parts or machine work. We often end up redoing cars that have been "restored" by other shops that cheaped out and fucked things up. It makes it hard to turn a profit but at least everything that leaves our doors is a quality product that will last, we have cars that are still being driven daily 15 years after being rebuilt!

I agree that there is the right way as I too have been a bmw tech for over 10 years and have training on e36s to our s85's(which like to drop valves) not every motor needs all those parts and thats why engine builders get paid good to replace whats needed and not shoot every part just because it might have a few miles on them. most of us know that many of these motors will way out last our cars with the current rate of destruction so I don't believe in spending money (unless customers want the extra extra insurance) when funds could be stretched to other needed parts. to add a little up 1k for head 1k for bottomend (which is way over priced) is 2k total and you got a new motor, not 5k. lets rebuild these great cars one at a time without trowing our hard earned money out the window(again not saying you are) i just like to give people educated choices for themselves to make.

[Devin1205]

Or it was heavily modded. A stock 335i is nothing special

a stock 335 would take a stock s50- e30. I thought a e30 s50 swap would take this old man out in a new 535ixt until I got put in my place, and no I didn't tell my customer.

ps it was from a light and traction was a bit of a issue to note. e30 had zf trans and 325 diff.

[BeirBrennerE30]

Thats weird. I have raced me driving my e30 s52 against a friend driving my stock 135i and the e30 barely took it (from a roll). the 335 and 535 are each a little slower than the 135 so a well set up e30 s52 can take them... but its close

[bimmer_E30]

some one sell me a s52 obd1 right now.

[Fidhle007]

I agree that there is the right way as I too have been a bmw tech for over 10 years and have training on e36s to our s85's(which like to drop valves) not every motor needs all those parts and thats why engine builders get paid good to replace whats needed and not shoot every part just because it might have a few miles on them. most of us know that many of these motors will way out last our cars with the current rate of destruction so I don't believe in spending money (unless customers want the extra extra insurance) when funds could be stretched to other needed parts. to add a little up 1k for head 1k for bottomend (which is way over priced) is 2k total and you got a new motor, not 5k. lets rebuild these great cars one at a time without trowing our hard earned money out the window(again not saying you are) i just like to give people educated choices for themselves to make.

The machine work alone on the head of a 24v motor is going to be $1k, pistons are $1200 at least and those are just the two of the many things. Now you still have to take everything apart and put it back together again...

The major flaw in "replacing only what's needed" is the liability it puts on you. Let's say you only replace half of the valve guides and then return the motor to the customer. It then starts smoking because something you thought was "Close but OK" finally gave up the ghost and now the customer is pissed and wants you to fix it for free. I'm not saying that's going to happen every time but in this economy I can't afford to rebuild people's motors for free.

You must be the monkey that "rebuilt" the motor on the 3.0 we're currently restoring. It was taken to a shop for a "restoration" and they proceeded to hone the cylinders with the pistons still in, mash the timing gear onto the crank 15˚ off (it's keyed, not splined) install the oil pump backwards. It was a reputable shop too...

We're now in the rescue process and by working quickly and pricing our time fairly we will be able to give the the customer a 100% perfect motor for only a fraction more of what an "engine builder who gets paid good" (yes, that's what you said, did you skip out of grade school or something?)