S50 Power???

[FredK]

I bet you will be able to equal the PEAK hp numbers of an S50, but it is likely that the total powerband will not be as beefy as an S50.

Check out the dyno curves of an M52 with S52 cams vs an S52 on eurosporthighperformance.com. Sure, the peak hp numbers are very close, but the entire powerband of the M52 is below that of the S52.

[FKNFASTM5]

I bet you will be able to equal the PEAK hp numbers of an S50, but it is likely that the total powerband will not be as beefy as an S50.

Check out the dyno curves of an M52 with S52 cams vs an S52 on eurosporthighperformance.com. Sure, the peak hp numbers are very close, but the entire powerband of the M52 is below that of the S52.

Cant find it, although i didnt give a look very much..
Anyways, would there be less power down low, is that the case?

[FredK]

http://www.eurosporthighperformance.com/pdfs/Cam_M52_vs_Stock_M3.pdf

Yes, the hp curve doesn't really catch up until 5500 rpm.

[FKNFASTM5]

http://www.eurosporthighperformance....s_Stock_M3.pdf

Yes, the hp curve doesn't really catch up until 5500 rpm.

this is like super cool instant messaging..
Anywho ,is the 3.28 have exhaust and software, or just the s52 cams?

[FredK]

Yes, it has an M50 manifold, S52 cams, a cold air intake, and Eurosport software that was written by Jim Conforti. I'm sure you can get closer with an exhaust; I've heard of M52 owners getting over 200 lbs-ft of torque with the cam kit and a better exhaust.

Anyway mazur thanks for that link. I know that the 264/256 cams will fit into any M/S5x engine, but I wasn't sure about the valve/piston clearance on the M50s. I know Schrick has a separate set of 248/248 cams for the M52, so I was kind of curious.

[FKNFASTM5]

so all in all, i have about 3 options

S50
M52 with M50 intake mani and some goodies or
M50 with so goodies


Out of those 3, which would be more cost effective for the best power tourqe, ect.

Thanks once again for all your help guys

Mike

[FredK]

$1200 M52 complete engine
$500 M50 manifold and related OBD-I swap stuff, gaskets
$300 S52 cams
--------------
$2000 + software, which there is none off-the-shelf that I know of.

So, the M52 is around $2000+.
An S50 is around $2800
An M50 is around $800 complete, just add $450 or so for the S50 cams and software.

Also, consider that you'll somehow need to get the cams installed. It's a fairly straightforward procedure, but challenging for a first-timer. You'll need a few specialty tools that will run you around $150.

The <10/95 S50 had soft valve spring upper plates (retainers), which ought to be replaced if you plan on racing or driving it hard. This job costs a few hundred bucks in parts and tools, but costs mega-bank if you take it to a mechanic to do it.

I say drop in a stock S50, then upgrade as you go along.

[FKNFASTM5]

$1200 M52 complete engine
$500 M50 manifold and related OBD-I swap stuff, gaskets
$300 S52 cams
--------------
$2000 + software, which there is none off-the-shelf that I know of.

So, the M52 is around $2000+.
An S50 is around $2800
An M50 is around $800 complete, just add $450 or so for the S50 cams and software.

Also, consider that you'll somehow need to get the cams installed. It's a fairly straightforward procedure, but challenging for a first-timer. You'll need a few specialty tools that will run you around $150.

The <10/95 S50 had soft valve spring upper plates (retainers), which ought to be replaced if you plan on racing or driving it hard. This job costs a few hundred bucks in parts and tools, but costs mega-bank if you take it to a mechanic to do it.

I say drop in a stock S50, then upgrade as you go along.

I know they are a lil bit over priced, but auto recylcing quoted me at 3800 for an s52, if anyone has one or knows of one for less than that... please send my way.

One last thing, is a stock S50 a high or low compression motor, because i have always toyed at having a car with a turbo...and i still want one so...

Thanks again,
Mike

[static]

10.5:1 ratio
people turbo it anyway (with good results, go to bf.c)

[kolunda]

is the 3800 for the s52 with transmission or not?

[FKNFASTM5]

is the 3800 for the s52 with transmission or not?

Without! if it was with tranny i would be happy

[dougsic]

Thanks! I have not been able to find an S50 for under 3200. To me 2320 seems like a bargain.
The thing is i drive an E28 M5, i dont think i will be happy with regular M50 power. I realy dont want to spend a million dollars on this but it is something i really want to do.
Im in a bind..M50 and build it a little bit, or S50 and leave it....

FWIW - I have an e28 M5 too. My e30 s50 made 212 RWHP so you might think it compares to the M5 but, as fun as it is - and it IS fun - it ain't no M5. Also, with brake cooling ducts, M5 brakes are amazing even when tracked hard. E30 brakes with s50 power are pitiful and it will take a lot more $ than some flex hose to help them.

For the e30, I've just done headers and exhaust, bought the 3.5 MAF and ITG so when that stuff is installed I'll test it again but if you're expecting M5 thrills, you might want to ride in one first.

In fairness to the e30, mine is a 'vert with power top so it's a little heavier than a coupe - maybe that car would perform closer to the e28.

Lastly, I have a 528e badge on my M5 but it doesn't fool anyone. The e30 has only SSR wheels so other than the two 3" straight tips hangin' out the back, the e30 is a great sleeper - more so than the e28.

And it doesn't have s38 maintenance costs either!

[ATLe30]

ive riddin in a e36 328 with s52 cams, m50 manifold, cam specific software, conforti intake, pulleys, and stromong exhaust with 231rwhp, 209 rwtq. its possible to get that much out of a m52. im currently getting together all the parts to do the same swap into my e30. i only lack a ZF tranny. i can tell you how that is when im done with the swap in a month or two...

[FKNFASTM5]

FWIW - I have an e28 M5 too. My e30 s50 made 212 RWHP so you might think it compares to the M5 but, as fun as it is - and it IS fun - it ain't no M5. Also, with brake cooling ducts, M5 brakes are amazing even when tracked hard. E30 brakes with s50 power are pitiful and it will take a lot more $ than some flex hose to help them.

For the e30, I've just done headers and exhaust, bought the 3.5 MAF and ITG so when that stuff is installed I'll test it again but if you're expecting M5 thrills, you might want to ride in one first.

In fairness to the e30, mine is a 'vert with power top so it's a little heavier than a coupe - maybe that car would perform closer to the e28.

Lastly, I have a 528e badge on my M5 but it doesn't fool anyone. The e30 has only SSR wheels so other than the two 3" straight tips hangin' out the back, the e30 is a great sleeper - more so than the e28.

And it doesn't have s38 maintenance costs either!

Thanks for the input.. i am not looking for M5 thrills so much as different thrills. I am leaving the M5 as stock as possible, to preserve its greatness, as with the E30 i feel that i can be more expressive and try different things with out ruining the car..got me?

Anywho, i am still looking for the right parts at the right price (good luck... i know:()

Thanks for all the help guys
Mike