question?
Rotorphile.
Joined: Mar 2002
Posts: 10,120
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From: Richmond, VA
Easy.
Top, to bottom:
The heads are completely different. The B18A uses an updated DOHC ZC style PR4 head, while the B18C uses a newer P72 DOHC VTEC head.
The B18C has the larger head locating dowel pin holes on the opposite side of the B18A to prevent accidental DOHC VTEC head swaps.
The B18C has an in-block VTEC oil supply passage, in-block oil squirters, and a modified lower end with a stock crank girdle.
The crank, rod, and piston sets are different also, however are interchangable as a matching crank/rod set (B18C crank and rods in a B18A or B18A crank and rods in a B18C.)
Top, to bottom:
The heads are completely different. The B18A uses an updated DOHC ZC style PR4 head, while the B18C uses a newer P72 DOHC VTEC head.
The B18C has the larger head locating dowel pin holes on the opposite side of the B18A to prevent accidental DOHC VTEC head swaps.
The B18C has an in-block VTEC oil supply passage, in-block oil squirters, and a modified lower end with a stock crank girdle.
The crank, rod, and piston sets are different also, however are interchangable as a matching crank/rod set (B18C crank and rods in a B18A or B18A crank and rods in a B18C.)
Thread Starter
Registered User
Joined: May 2004
Posts: 76
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thanks for all the info, i was just wondering b/c i have been looking for a b16a for a little bit and cant find 1. im looking for 1 with bad rings though, so i found a head for pretty cheap and was wondering about the block of the b18's to see if the sleeves were diff in either, like stronger in the b18c or so and i heard about oil squirters but noone i talked to really knew about them. but thanks again for the info