which 24v engine is best for boost

[bloodshot-e30]

errr what? other than more displacement they're the same motor.

from everyone that has boosted their 24V motors they all say the M50 was easier to tune because of the more mild cams or something like that i cant remember exactly what all was said just goin from what ive been told by ppl who have done it...

Where did you (or Active) pull those numbers from? The difference of 1 psi sounds like someone is splitting hairs for no particular reason. And those numbers say nothing about how long the engine will last at any of those pressures. I can run a stock S52 at 30 psi, just not for long. I don't think any of those motors will hold together at 17-19 psi for long enough to call them "reliable", especially on the track.

yea ryan active told me this with a stock bottom end and a thicker head gasket they can get that much boost and be somewhat realible (so he says)
i prefer NA or supercharger! lol

[nando]

from everyone that has boosted their 24V motors they all say the M50 was easier to tune because of the more mild cams or something like that i cant remember exactly what all was said just goin from what ive been told by ppl who have done it...

so, you don't know...

the cams of the S50/S52 aren't going to make them difficult to tune either, not by a longshot.

[bloodshot-e30]

so, you don't know...

the cams of the S50/S52 aren't going to make them difficult to tune either, not by a longshot.

hmmm good to know just takes a more aggressive tune then right?

[matt]

It takes someone who knows WTF they're doing no matter what motor you have.

[bloodshot-e30]

^^^truth!
this is why i prefer NA and having someone make my chip :D haha

[e30polak]

Power wise = OBD1 s52

Best bang for your buck = OBD1 m52

Cheapest = m50 NV

The problem with the non-Vanos motor, is the heavy rotating assembly in comparison to the Vanos engines.

Either way, the 24v engines can handle more power with stock internals then any e30 will ever be able to reliably put down. Don't think about getting over 15 psi on a 24v boosted e30, unless it's purely for drag racing or drifting.

[Iain]

Either way, the 24v engines can handle more power with stock internals then any e30 will ever be able to reliably put down. Don't think about getting over 15 psi on a 24v boosted e30, unless it's purely for drag racing or drifting.

Just means you need to spend more time with an angle grinder, flares and a later model rear-end to go in :)

[Jean]

Iain - which is beyond the ability of 99% of r3v kiddies. lawl

[Iain]

hey, if they can notch subframes... :)

[rThor432]

hmmm good to know just takes a more aggressive tune then right?

No, just a different tune. With any custom built N/A or S/C motor you would be best off with a custom tune for your application, just like with turbocharging.

[bloodshot-e30]

No, just a different tune. With any custom built N/A or S/C motor you would be best off with a custom tune for your application, just like with turbocharging.

yea im getting mine dyno tuned in late june when i get my crank and cams

[dirtysix]

Nope, the M52B28 as used in the E36 328i and - I think - the E39 528i. It was the first-gen version, not the M52TU that came later, and had the lightweight block, etc.

I don't know what pistons/rods we got in our fuh raze M52B28, but I'm about to find out seeing how I've now got one in the garage needing a full rebuild.

We got the good stuff for our M52s as well aaaand a little birdie told me we got others like oil squirters ect.

I'll await your comfirmation.

[Syncro325is]

hey, if they can notch subframes... :)

I see what you did there. haha

[SamE30e]

why specifically? i'd think the forged crank and meaty pistons of the M52B28 are worth something.



errr what? other than more displacement they're the same motor.

I think the M50NV valvetrain is worth something..

M52b28 bottom end M50nv head? lol

Doesn't the M50nv have something forged in the bottom end or am I on crack?

[nando]

the rods are forged, but pretty much every engine has forged rods. They're also quite heavy compared to the M52.

I also don't get the M50NV valvetrain. Yay it comes with dual springs? You can put those into any M5x head. who wants crummy old 200k valvesprings anyway?

plus the valve stems are thicker. that means the valves are actually heavier..