b18a & b18b different?
what is the difference between b18a and b18b motors? they both seem the same to me. is it just ecu software? TIA
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the b18b's have more torque
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Don't forget the b16 has more ponies and VTEC, whereas the b18 has no VTEC.
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Originally posted by 90hatchsi Don't forget the b16 has more ponies and VTEC, whereas the b18 has no VTEC. |
Originally posted by d16z6 power the b18b's have more torque |
B18A is from 1990-1993
B18B is from 1994 + Supposedly the B18B head has better flow and slightly better cams. The manifold looks a little better, possibly better flowing too. Other than those I believe they're pretty much the same |
thanks. i was actually talking about physical similarities. heads, pistons, etc
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Heads are the same, diference is in cams and intake manifold only. Everything from the block down is identical, pistons, crank, rods, bore, cylinders walls, etc. etc...... all the same.
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Jugglez you're the best. i owe you a coffee or beer:D
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Originally posted by BellaRSport Jugglez you're the best. i owe you a coffee or beer:D |
Originally posted by [1sL0CiviC] dude...they are talking about the b18a and b18b :D :D :D |
Originally posted by 90hatchsi Ooops I need glasses. hehe |
Originally posted by ryuujin jus bring him to WAGG :D BellaRSport, i missed the part of question about the ecu's 1st time around... here's a break down. 90-91 B18A ecus are non-OBD and labelled PR4 '92-'93 B18A ecus are OBDI and labelled P74, possibly P75 also but these are rare. '94-'95 B18B ecus OBDI and are labelled P75 '96-up B18B ecus OBDII and are labelled P75 as you probably know OBDII ecu's are impossible to chip, so if you've got some heavy mods on an OBDII B18B and decide running a re-programmed chip is the way to go (either custom or pirated) you can get an OBD I conversion harness installed, which will allow you to run either a P74 or P75 OBDI ecu... and you'll be able to chip these without probelms. There are also very small differnces between the OBDI and OBD II B18B's... like valve cover and location of PCV valve. |
actually i'm might get a PnP b18a head for a b20b block and be running the b20b ecu. looking at a setup that includes short ram, Skunk2 intake man, DC Sports 4-2-1, twinloop style muffler, AEM fpr and AEM fuel rail. then i might look into an ecu upgrade. just gotta figure if i want to run b20b or b18a cams
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