Honda LS Engine
Posted on September 7, 2009 by Jesse O'Brien in In the Garage
The LS engine is the least expensive way to break into the more performance-oriented b-series engine family. The b18a1 was produced from 1990 and 1991 in an obd0 model and 1992 to 1993 in obd1, then the b18b1 was produced from 1994 to 2001 as an obd2 engine. All models were available on the USDM market, and continue to be readily available in salvage yards. Any Acura Integra RS, LS, or GS will come equipped with an LS motor in one form or another.
The LS gained its name for being the only b-series engine to come without vtec from the factory, but LS/VTEC hybrids have enjoyed some popularity since their inception. With a little bit of work, a VTEC b16 or b18 head can be fitted onto a non-VTEC LS head.
Installing an LS motor into a Civic/CRX engine bay is the simplest of b-series swaps, as it requires minimal wiring modifications (especially if using an obd0 model). My full b18a1 writeup is also available on this site. After installation is complete, inexpensive modifications can be made to greatly improve their performance. Simply rechipping the ECU and replacing the camshafts, cam springs, lifters, and guides will completely revitalize the powertrain of a 30-year-old Econobox.
My 1996 Honda EX spun #1 trashing the crank, scuffing the cylinder wall, and sending bearing shards through the engine oil galleys.
New short block and head is just over $5,000.00. The machine shops suggest a used engine but there isn’t one available in my area.
Any thoughts or opinions?
Depending on your location, it may be a good idea to swap to a used engine. It’s a pretty straightforward d16, giving you LOTS of options to swap into it (d15′s and d16′s will both work). Shipping an engine across the continental US is only ~$500 and a d16 with consistent compression across all cylinders can be had for $500 or so.
You could also swap to a b-series engine, but you’re making your way into slightly more expensive territory there. If you’re doing the swap yourself, you can come in under $2500 at the end of the project.
I am looking for an ls motor to put in my 97 civic dx 5-spd. I currently have a stock motor that has 215,000+ miles on it and its starting to really consume oil and antifreeze so I wanna switch it out. any good suggestions??
I would recommend a b20 rather than the LS if you’re looking for a daily driver. It’s very nearly a drop-in swap, produces more torque, and is less likely to be thrashed around.