Wattup H-T peeps, my friend and i are just arguing about how much hp the b18c motor has to the wheels? wat do you guys think?

 

Search a little, this has probably been covered. I would say about 160hp or so.
Out of curiosity what are you guys saying it has

 

What b18c? R or Xsi?

 

Yeah i was just guessing the B18c1 (GSR)

 

i said around 160 but he said 195

 

the 195 is the type R motor at the fly, not the wheels. 160 is a GSR motor, well, 165 is a gsr motor at the fly. technically you are both correct and both wrong, they are not the whp, but the fwhp.

 

The gsr DOES not have 165...PERIOD. A B18C1 has 170bhp and loses about 15% so that would make whp 144.5 since it always varies you could say between 140-150.

The B18C5 has 195bhp and 165whp...give or take 5whp

USDM motors of course

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BlackSage &raquo;</TD></TR><TR><TD CLASS="quote">The gsr DOES not have 165...PERIOD. A B18C1 has 170bhp and loses about 15% so that would make whp 144.5 since it always varies you could say between 140-150.

The B18C5 has 195bhp and 165whp...give or take 5whp

USDM motors of course</TD></TR></TABLE>

This is an excellent guess, the 170hp B18C1 usually dynos between 140-150 whp, depending on conditions and the dyno.

 

 

mine dyno'd 143 whp if that helps any this was done during the summer
mods: 225,000 original miles the engine is a 1994 A'PEXi power intake, muffler shop 2.25" exhaust, "Jun" chipped P28

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BlackSage &raquo;</TD></TR><TR><TD CLASS="quote">The gsr DOES not have 165...PERIOD. A B18C1 has 170bhp and loses about 15% so that would make whp 144.5 since it always varies you could say between 140-150.

The B18C5 has 195bhp and 165whp...give or take 5whp

USDM motors of course</TD></TR></TABLE>

would it lose 15% on all trannys? just trying to become more knowledgeable, would the tranny make a difference in the amount of power lost

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tegsallgood &raquo;</TD></TR><TR><TD CLASS="quote">

would it lose 15% on all trannys? just trying to become more knowledgeable, would the tranny make a difference in the amount of power lost</TD></TR></TABLE> the percentage loss is a guess at the friction lost between the flywheel and ground, so i would probably be safe to say that depending on the condition of bearings, fluids, ect that some trannys would take more power to spin than others

 

wow you guys are good help for this guy good job.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tegsallgood &raquo;</TD></TR><TR><TD CLASS="quote">

would it lose 15% on all trannys? just trying to become more knowledgeable, would the tranny make a difference in the amount of power lost</TD></TR></TABLE>

Most manual transmissions lose about 15%. Condition of the motor varies as well. But for Honda/Acura you would be safe to assume 15% is lost. The variance is there because there are some motors that dyno exceptionally high for no reason at all. I have seen a b18c1 hit 155whp and a c5 hit 172whp....but those numbers are not the norm/average.

If you are asking about the transmission, the difference is manual vs auto. On aveage I believe manuals lose 15% while autos lose ~30%. So say we have a B16a2 that produces 160bhp. when it gets to the wheels the following will happen


M tranny: 160 * .85 = 136whp
A tranny: 160 * .70 = 112whp

HTH

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BlackSage &raquo;</TD></TR><TR><TD CLASS="quote">Most manual transmissions lose about 15%. Condition of the motor varies as well. But for Honda/Acura you would be safe to assume 15% is lost. The variance is there because there are some motors that dyno exceptionally high for no reason at all. I have seen a b18c1 hit 155whp and a c5 hit 172whp....but those numbers are not the norm/average.

If you are asking about the transmission, the difference is manual vs auto. On aveage I believe manuals lose 15% while autos lose ~30%. So say we have a B16a2 that produces 160bhp. when it gets to the wheels the following will happen


M tranny: 160 * .85 = 136whp
A tranny: 160 * .70 = 112whp

HTH</TD></TR></TABLE>

manuals usually lose 15%
autos 18-20%

loss can be reduced by reducing the amount of rotational mass. new flywheel, lighter axles, etc can make a tranny more efficient

 

These threads make my head hurt.

B18C5-195 at the flywheel
B18C1-180 at the flywheel

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by theSYNDICATE &raquo;</TD></TR><TR><TD CLASS="quote">These threads make my head hurt.

B18C5-195 at the flywheel
B18C1-180 at the flywheel</TD></TR></TABLE>

Wrong answers make my head hurt :

the B18C1 has 170 to the flywheel, and 140-150 to the wheels

 

Yes, a good solid number for b18c1 is 150 whp. Usually it varies by a few ponies. LS Integras that are manual make about 120 whp. ITRs make about 165.

 

gsr with basic i/h/e untuned in 90 degrees made 159.2whp

 

just dynoed my B18C1 today

188.8 hp
142.8 trq

at the wheels, on new setup, those numbers are up from 143 hp and 113 trq from before rebuild

 

sweeet. never knew what my flywheel actually did- it just makes the transfering of power more efficient? interesting. thanks for the help guys- didnt mean to jack the thread