Claimed over 230hp from an m50

[aziza z]

http://orangecounty.craigslist.org/cto/2482468212.html

Owner claims "over 230hp". Im not seeing how an m50 with no listed modifications and no turbo can have power in that range. Am I missing something or is the owner completely off???

[Fusion]

Hp and Whp big difference, but you're right even Hp should have atleast cams, headers, a tune etc. listed.

[MR 325]

A ZF trans with a 4.10 diff... Holy shit that must be terrible!

[M-technik-3]

A ZF trans with a 4.10 diff... Holy shit that must be terrible!

Measured with a G Pro device?

[325ix]

I like it minus the eye brows, the steering wheel looks like it's fro, a harlequin vw.

[Sagaris]

[nando]

that's because everyone who does an M50 swap thinks they've somehow shaved a full second off their 1/4 mile time by adding 10whp.

[dude8383]

that's because everyone who does an M50 swap thinks they've somehow shaved a full second off their 1/4 mile time by adding 10whp.

and not everyone thats done an m50 swap is coming from an m20 ;)

coming from an m42 it felt (still feels) like a fucking rocket ship man... :D my m50 is puttin down 205whp, thats a sufficient jump even for someone that is coming from an m20

[nando]

205 whp is great, but that's not stock. :)

[NigelStu]

semi-related question... what is the high-end of the WHP range that one could actually achieve with a fully built, race-only NA 2.5L M50?

over-bore, balanced-blueprinted, cams, increased compression, header, intake work, head-work, tuned, etc.


NA only - no forced induction.


(just trying to see if that engine could be competitive in SCCA STU class...)

[nando]

it would be cheaper to just buy an S52

[blefevre]

OP: WTS M20 325is. Makes 230hp.

See what I did there.

[NigelStu]

S52 doesn't come in a 2.5L.


S52 is legal, but the car needs to weigh 3200 lbs.
a 2.5L car (engine doesn't matter) is at 2750 lbs.


That is a LOT of extra weight.



Highly competitive HP to weight ratio is 9.1-9.5 lb/HP at the wheels.

[nando]

ninja edit? :p

[Bimmerman325i]

semi-related question... what is the high-end of the WHP range that one could actually achieve with a fully built, race-only NA 2.5L M50?

over-bore, balanced-blueprinted, cams, increased compression, header, intake work, head-work, tuned, etc.


NA only - no forced induction.


(just trying to see if that engine could be competitive in SCCA STU class...)

In STU you can't do much at all. No engine internals or balancing, no headwork, no overbore, no cams, no compression increase. All you can do is header and exhaust and an intake. That will maybe get you to 200whp.

A fully built race M52 (BMWCCA JP class), with M50 manifold, KK headers/3" exhaust, Evosport or Sunbelt race cams will be 240-250whp and cost a buttload.

Similarly built S52 will be near 300whp, with similar cost.