BIG SEXY
what does the e46 325 engine have on thee36 325 engine? what are the benefits of double vanos?
96 328is: eurospeed M50 intake manifold with AA M50 Manifold software
rogue eng. pullies
ecis cai
M3 exhaust
M3 rear spoiler
5 spoke ROH's 235/40/17front 245/40/17rear
UUC clutch stop
motorsport X Brace
94 325- 5 speed
borla exhaust
96+ side skirts
zender front air dam
97+ nose panel
Member
M54B25
-OBD2
-Double Vanos
-184hp/175lb-ft
M50B25
-OBD1
-Single Vanos (No vanos '92)
-189hp/189tq
-3.15 Gearing
The benefits of double vanos is a flatter torque curve. If you put an M50B25 dyno next to an M54B25 dyno plot, you would notice that the M54 has more low-end torque and power.
Consequently, the motor would theoretically get better fuel economy compared to the M50. This may be offset by the extra weight carried in the E46, though...so the EPA ratings would be similar, if not worse for the E46.
-Jarrett
'04 Scoobaru STi
Cobb Stage 2 Accessport, HKS 3'' Catless DP, Helix 3'' Catback, Progress Coilovers, Cobb 25mm R. Sway, Cobb Formula Street/Track Pads, Whiteline Diff. Bushings, Rota Torque 17x8 w/ Hankook RS-2, Omori 60mm Boost Gauge, Ricer Wing.
Member
are you sure borf about the 189/189 figure? I've read things from 189/181 to 189/184.
Squash Air Fresheners!
http://forums.bimmerforums.com/forum....php?t=1206513
Member
Euro M50tuB25
-OBD1
-Single Vanos
-192bhp
-3.23 diff (got to double check this)
-S5D 310Z ZF tranny
Originally Posted by ClintonM3
Member
My bad, 181 is the tq number for the M50B25.
-Jarrett
'04 Scoobaru STi
Cobb Stage 2 Accessport, HKS 3'' Catless DP, Helix 3'' Catback, Progress Coilovers, Cobb 25mm R. Sway, Cobb Formula Street/Track Pads, Whiteline Diff. Bushings, Rota Torque 17x8 w/ Hankook RS-2, Omori 60mm Boost Gauge, Ricer Wing.
Member
ok if the e36 325 has more torque and hp and weighs less how come according to www.car-stats.com the 94 325i (fastest year according to the website) has a 7.4 0-60 while the 2001 325i e46 is faster with a 7 sec 0-60?
Alpine White 1999 M3 5spd Xbrace
2006 Acura TL 6spd SOLD
2000 323i 5spd w/ sport package SOLD BBS RK 17X8 - kumho ecsta MX 225/45/17 - Shark injector - UUC SSK with DSSR
Hellrot Red 1997 328is 5spd w/ sport package SOLD Dinan Cold Air Intake - Dinan Stage II Software - BB TriFlo exhaust - Eibach Pro Kit - Koni Shocks - UUC tranny mounts - 3.15LSD - UUC clutch stop- UUC 8.5 lbs stage II flywheel - e34 M5 clutch - fan delete - asc delete
Retired Moderator
I'm guessing the newer 2.5 probably also meets lower emissions standards, and might even provide better gas mileage, etc...
Member
wasn't the M52 2.5l used in the E36? Thought those were 170 hp/181 ft/lbs. same as the M52TU 2.5l? so the M54 2.5l has about 14 more hp?Originally posted by 97-328is
ok if the e36 325 has more torque and hp and weighs less how come according to www.car-stats.com the 94 325i (fastest year according to the website) has a 7.4 0-60 while the 2001 325i e46 is faster with a 7 sec 0-60?
could be gearing differences as well.
1999 Z3 2.3 - Silver/Black 5M
2004.5 Passat 1.8T 4-motion - Silver/Gray 5M
1997 FZR600 - Blue
Member
The M52 was the 2.8 liter found in the e36 328. The M50 is the 2.5L found in the e36 325, and makes 189 hp. The M54 is the 2.5L found in the e46, and makes slightly less horsepower than the M50 due to lower emissions, OBDII, ect.wasn't the M52 2.5l used in the E36? Thought those were 170 hp/181 ft/lbs. same as the M52TU 2.5l? so the M54 2.5l has about 14 more hp?
1996 Hellrot on Modena M3
1991 Imola on black 318is
Posting Permissions
Reply With Quote
Bookmarks