Log in. Install the app. For a better experience, please enable JavaScript in your browser before proceeding. You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser. Differences betwen b18a1 and b18b1. Terms 1 2 Next. Ryma New Member. What are the differences between the 2? I searched but not finding much info. Well I was thinking if an b18a intake on a b18b or maybe b18b cams on a b18a would work?
A complete rundown between the b18a1 and the b18b1: b18a1 hp obd0 engine cable trans b18a1 hp engine went to obd1 and cam profile was slightly changed, cable trans b18b1 hp obd1, changed the intake manifold design, located MAP to throttle body, different axle midshaft, hydro trans b18b1 hp engine goes obd2, new valve cover design, oil pump changes to accomodate crank sensor.
The only differences between the engines are the sensors and accessories between odb0, 1 and 2 all of the hard stuff is totally interchangable. Also it is the same crankshaft that is used in the b20 engine. LOL thanks for the info. I was just cureious IYO hows the B20 series of motors stand up agenst boost? Iam trying to find options for not going with a b Last edited: Aug 8, Well I looked in varyious forums for the b20 and dident find much. Mostly swap questions.
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It breathes better. What if I port and polished the b18a1 head and got high flow valves? I had planned to do that anyway. I just searched and I read the b18A intake valves are a little smaller than the B18B Idk if its true. I meant oil PAN. And I was gonna buy a Moroso that already is tapped for the turbo oil feed. It is 84mm wide like a b20 bore, and therefore has more area. It should push your compression down slightly. You can get it milled so the quench area is flat, but then if you ever have any warpage, you head is scrap metal.
Also to note, the P8R only came on some imported motors that were previously in Honda Orthia's google the car, never sold in the U. This means more flow.
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