yep, 1.8l block from the CVCC EK1 and the head of the non-CVCC 1.6l EL1.

By Jdupre (Jdupre) (208.176.144.238) on Friday, April 22, 2005 - 12:11 pm:

>>till i swapped it out for an EL/EK combo

What do you mean? Are you using the block from one and the head from the other?

By -Andrew Smit- (Cvcc_Wagon) (154.20.95.104) on Wednesday, April 20, 2005 - 10:18 pm:

my EM1 had 260,000 miles on it and it didn't burn oil and ran great till i swapped it out for an EL/EK combo. it's a good little motor. i don't know for sure but i don't think all 1500 CVCC motors have the same specs

By Jdupre (Jdupre) (24.5.152.32) on Wednesday, April 20, 2005 - 09:39 pm:

Two questions:

A) Are the bore/ crank/ rod/ ring/ piston etc. dimensions for the 1500cc CVCC engines (ED, EM) the same for all years?

B) When rebuilding, should I replace the bearings even if they spec out ok?

The background:
I'm rebuilding a EM1 (1500 CVCC from a '83 civic). Compression was bad on a couple of cylinders, and it was burning oil.

When I added a bit of oil through the spark plug hole and re-tested, compression went right up so I immediatly thought it needed new rings (or more). The head was rebuilt two years ago after the timing belt broke.

Now this engine has 250,000 miles on it, and the block has never been rebuilt as far as anyone knows. I was very surprised to find practically zero wear. The bores measure from 74.02 to 74.05mm. The piston skirts are 73.98mm. (There is visible wear at the piston's mid-section, but the service manual doesn't specify what is acceptable or not). Crank runnout is .01mm (better then spec). Only the ring gaps were outside of "service limit" according to my service manual for the '79 CVCC. Can this be right on an engine with this many miles on it???

I haven't yet measured the bearing clearances yet, but if I find similar lack of wear, can I re-use the bearings?

- Joe