When I purchased my Eg4 Civic hatchback in 1998, I loved all about it, the body interior and engine were all in perfect condition. However, there was one thing that I would not have chosen: the self-acting transmission. The original engine was a Jdm D15B Sohc Vtec, rated at a respectable 130 p.s. Especially for a 1500 cc!
So I started my study on the net to find out my options with respect to getting the car converted to manual transmission. In my search, I discovered Eric's B16A site and the Hybrid site among others. So I began to think, why go straight through the problem of changing the transmission on the 1500, might as well go for it an put in a Dohc 1600cc Vtec and gain 40 hp in the process! I thought about a B18C but those engines are rare and costly in Trinidad. In any Case the Jdm second generation B16A puts out the same horsepower, with a bit less torque. From what I had learned on the Internet I knew the engine would fit fine. Also because my car originally came with a Vtec engine, I knew that the wiring would not be very difficult.
Transmission
I read as much as I could find on swaps, and tried to plan the operation to the best of my ability. Let me point out, that there is no substitute for good information, so if you are planning any sort of hybrid, read as much as you can Before you start; web sites, Faqs, articles, magazines, whatever. I chose to have a local shop with vital Honda palpate do the work and I was able to uncover the engine from a local importer.
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My Mistake
I knew that it would be best to buy the engine and Accessories as a package, and that's just what I did. But I focussed on the big items, Engine, Y21 Lsd trany, Ecu, unblemished engine wire harness, axles, and in so doing, I did not even realize that the engine did not have the mounts! (No Ac unit either!) Now although In my country we have quite a brisk trake in Jdm parts, some things are almost impossible to get, like mounts!
The solution? Alter the original D15B mounts to fit. That mistake made a scheme that would have taken a little less than two weeks, last five weeks. You could imagine how my wife loved me for this!
Starting Up
The mounts took a admittedly long time to complete, plus as you would expect, my car wasn't the only one in the shop! Anyway, it turns out that the rear (center) engine mount could be used on the B16A. I was able to get a front transmission mount, leaving three mounts to be institution adjusted. By the way the lower front engine mount / ac bracket on the B series motor is totally dissimilar to the D series mounts so I fabricated an adapter flange to accept my old Ac unit. (No way did I have intentions of buying an Ac).
After the mounts were adjusted and the engine was in the allowable place, the axle hardware was mounted in a jiffy, and vital fluids and hoses were connected. All the electricals plugged right in, together with the new Computer. The only divergence was the D series motor had the Map sensor fixed on the Throttle Body, so a remote unit was added for the new engine. The engine fired up, no problems. By the way, you guys should hear what the beast sounds like with only the tri-y headers! Since the headers were longer than the original, I had to adjust the distance of the exhaust pipe so that it could bolt to the headers
Details
Electrical
Now the self-acting definite facts. Take off the self-acting Gear Lever and toss it! There is a plastic slider underneath which is associated to the car's harness. This slider should be set to the Park position and locked there by some means. The guys at the shop put a big blob of silicone sealant over mine. This is vital if you plan to take your key out of the ignition after you drive!! Also on the plastic slider, there are two wires soldered near the town of the gismo (yel, blk/grn). When these wires are shorted they initiate the reverse lights and chime. (At least my car has a reverse chime). My guidance is to find the reverse sensor on the transmission, trace them to the relationship junction on the right side of the engine bay, then run a pair of wires from the reverse sensor leads to the plastic slider. Voila! Your reverse lights will work fine.
I had to add a knock sensor wire and an O2 sensor wire as detailed on the Hybrid Site. However, I still got a code 23 after driving the car for a few minutes. Then it occurred to me, that the Computer still notion the car was automatic. Now, I admittedly tried to find the Transmission control Module but for the life of me I couldn't. Maybe you have to Take off the dash of something extreme. Anyway, with the help of a B16A2 wiring diagram from my friend Christian in Austria, I was able to recognize the Ecu leads that were no longer needed. Just cut the leads and tape'em up! The first four are the Tcm leads; the other two go to At sensors for which I don't have the German translation:-)
Ecu leads
B3-grn/blu
B4-grn/blk
B7-grn
B13-grn/orn
B17-grn/blk
B19-yel
Mechanical
Of procedure when you Take off the self-acting gear shifter, there will be a gaping hole under there. I found that my car did not have any mounting holes for the shift linkage. This is good in a way, as you get to choose where the shifter will lie. I used a Crx shifter in my application and just bolted it on straight through the sheet metal in the floor arch. Depending on the linkage you use, and the plastic moldings that you choose to put over the shifter, some adjustment of the linkage distance may be necessary.
You will see a photograph of the pedal box from a Crx on the left. If you are admittedly observant you will notice that this pedal box is made for a cable clutch system. The verdict: scrap the idea of changing the pedal box. The guys cut off the clutch pedal, and welded on a hinge so it could be used to actuate the plunger on the clutch master cylinder. We used a soft line to connect the slave cylinder (on the trany) to the hard line, which connects to the clutch master cylinder. Very simple. In the interior photograph you can see the large (At) brake pedal next to the clutch.
The Result
The car works beautifully and is a joy to drive. Every feature and sensor is operational. Since I kept the original At housing around the shifter I did not loose one of my popular features of the car; the fold in cup holder! The shifter boot is institution made from Italian leather. I also got the white faced gauges with the deal!
I would admittedly suggest against swapping in the other direction though since all the car's wiring behind the firewall would have to be changed in order to get a fully functional (all features working) automatic.
Transmission - automated to hand-operated ConversionIncubus - Aqueous Transmission Video Clips. Duration : 7.82 Mins.Aqueous Transmission
Tags: Incubus, Aqueous, Transmission
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