udel.. where did u get a ca20et?
this isnt me but an email i saved off a message board.. I know its a ca18de, but its probably all the same ****.
Hi everyone.
After getting my S12 for nearly a year and being too busy to do anything on it, I have FINALLY got the CA18DE/T engine fitted to the car. Unfortunately, the timing could have been a bit better, I have fitted the non turbo version of the engine as I have not really been able to start seriously rebuilding another DET that I have sitting in the garden shed. Anyhow the idea was to get ancilliaries and computer working on the DE before going for the DET setup a little further down the road. Who knows?, maybe with some luck I may consider making a bit of a CA18DE NA buildup, but that all depends on what I can get done when. Anyhow, for all you who have been contemplating this swap but are worried about the potential difficulties of this, here are some details. I have now completed actually physically fitting the motor, but I will have to wait till next weekend to wire the car up. I have scoped out the wiring on both looms, and when I know it works, I will detail the electrical changes in a seperate post.
1. Gearbox. The stock CA20E gearbox was retained when I fitted the CA18DE. The bellhousing is a perfect match, both blocks are identical. Oh yea, be careful, each gearbox bolt is a different length, the top two are the medium length ones, the next two left and right are the longest, and the lowest 2 left and 2 right are the shortest. You will have to change one on the intake side short bolts to something a bit longer to bolt the inlet manifold bracket on the DE/T in place.
2. Flywheel. The CA20E uses a crank as opposed to the CA18DE series 8 bolt crank. As such you NEED the new flywheel and the 8 bolts which are slightly longer than the CA20E items. Also, the suto and manual CA18 bolts are a different length, the manual's are longer because of the flywheel thickness. Other than this, all other flywheel dimensions are similar except for some kind of a lip on the CA20E's flywheel towards the clutch side.
3. ClutchI have fitted a Heavy duty Exedy/Daikin clutch for the CA18DET. The stock clutch will fit the flywheel however, PBR clutch lists the same part numbers for ALL CA series engined cars.
4. AncilliariesGet this, ALL the ancilliaries such as A/C, P/S and alternator are essentially interchangeable minus a few washers here and there. Good news with respect to maintanence etc.
5. MountsThe CA18DE on the S13 has a different 3 bolt mount bolted to the block. Unbolt it though, and you will find another bolt hole beneath that will allow you to bolt the CA20E stock mounts on directly. Do clean up the bolt hole a little bit first though. You will also be unable to bolt the intake manifold brace back on as it will not match the S12 RHS mount. Either leave it off or cut it down and drill a hole to suit the bracket on the S12 mount.
6. Clearance.There is absolutely NONE with the new engine in place! That is on my car which is RHD. The clutch master cylinder is about an inch away from the intake plenum. Good luck with the heater hoses which are even further in...
7. Auto conversion issues etc.If the engine you purchase is auto to begin with, you will have to remove the pilot converter from the crank and fit the proper pilot bearing for the manual transmission. I paked the pilot recess with grease and jammed a similar sized shaft in to force the bearing out by hydraulic action. The Drive plates (plate covering bellhousing on engine side) is different on an auto engine. You will find the lower half of it is non existent on the auto one (its place is taken by the auto transmission inspection plate). Use your old CA20E manual plate instead. Do not do what I did and bolt the clutch and transmission up only to realise I could see the flywheel teeth from under the engine....the perils of working at night.
All in all, it is a very straightforward swap. Post if you have any questions, I will keep y'all posted when it is FINISHED, hope this helps out anyone who is holding back from this swap from a lack of info.
cheers from down under,dan
BTW, visit
http://www.club-s12.org. (there's a forum for our cars too!)