zomg, orly? nowai. :roll: (check my sig)
The issue is with the transmission bolts near the starter, I've been told that the D16A1/ZC trans. is slightly different from later D's at those bolts. You can make it work, but i think you can only get one bolt on the starter unless you drill and tap a new hole. This is all stuff I've heard, so I'm not positive. We should ask jlicrx, he'd know.
i think we have 2 different things here, which have 2 different solutions:
A. 88-91 CRX/Civic L3 transmission with a 86-89 Integra D16A1 engine.
B. 86-89 Integra CG transmission with 88 and up D-series CRX/Civic engine.
in either case, one of the bolt holes in the transmission does not line up with the hole in the engine - the bolt in question is the bottom bolt in the rear that comes thru from the engine side - you can drill out the hole slightly to get them to line up and use a flat washer on the bolt - it will look like this: (this is the D16A1 block and L3 transmission)
the other things that need to be done are as follows:
using the 88-91 L3 transmission and 86-89 D16A1 engine:
1. the starter on the 88 and up D-series engines has one long bolt that goes thru the clutch housing into a hole in the end of the block - the 86-89 D16A1 block does not have a hole for this bolt - you need to tap the hole in the clutch housing and install a different bolt to hold the starter on.
2. you need to use the flywheel, clutch disc, pressure plate and starter for the 88-91 CRX/Civic - the preferred set-up would be using the 90-91 flywheel and clutch since it is the larger 212mm diameter as opposed to the smaller 88-89 200mm diameter Si parts - if the transmission is 88 model with the different splines on the input shaft, you would need to use the 88 Accord disc with the 90-91 CRX/Civic flywheel and pressure plate - the CRX/Civic flywheels have a pilot bearing which supports the outer end of the input shaft.
using the 86-89 CG transmission and 88 and up D-series engine
1. the starter on the 86-89 Integra bolts to the clutch housing, so you shouldn't need to do anything there.
2. you need to use the flywheel, clutch disc, pressure plate and starter for the 86-89 Integra D16A1 - the 86-89 Integra flywheel does not use a pilot bearing - the input shaft is supported by the hole in the flywheel - the CG input shaft is too large to fit into the CRX/Civic pilot bearing - the 90-91 CRX/Civic pressure plate would also come into contact with the CG transmission case where the differential bearing is located - unfortunately, the 86-89 Integra used the smaller 200mm diameter clutch, but you are kind of stuck with it
here is picture of the 86-89 Integra and 90-91 CRX/Civic flywheels:
here is the 86-89 Integra CG transmission input shaft:
here is where the 90-91 CRX/Civic pressure plate would hit the transmission case:
