Jun 26, 2009, 2:11 am · #1
IggyEGuana
you are right about at the upper limit of reliable power for a ca18det. Some have taken it over 400 with no real problems but they are few and their cars are not daily driven or track stressed. They're "stock bottom" dyno queens for the most part. Have you been to the CA18DE/CA18DET section on NICO? Lots of good DOHC CA info there. For kicks check out Mobne's CA18DET supposedly now making 705rwhp. He's from Sweden. http://www.youtube.com/watch?v=ZD5wP56XpiM
For the speedo you just use the S12 sender in the S13 trans. One small bolt and retaining plate hold it in.
The thing to look out for is do not over-rev ur CA. When pushed beyond 8k (especially 8.5k) the rod cap bolts stretch from centifugal force and the rod bearings spin. This has happened to a few engine builders so its no fluke. The fix is lighter forged internals and ARP fasteners throughout the engine including rod cap bolts. With that and a valvetrain upgrade like the complete kit from Tomei (now discontinued I think) it is said that 10,000+rpm is possible.
one more thing to look out for that I just remembered is oil drainage from the head. At high rpm it pumps into the head faster than it can drain back down. A couple austalian members have attested to this and I've experienced it myself while drifting. Oil starts blowing out the valve cover vents in surprising quantities. My engine lost almost a quart during one event. Sustained high rpm plus g forces is what really makes it bad.
GL
Thanks for the info. I haven't seen Mobnes car irl yet but he doesen't live far away from me. I'm only revving 7500rpm.
sideways_s12
388hp on the stock block is def impressive your ride is looking good can't wait to get mine to the dyno man the more I see dual cam ca's the more I'm thinking of dropping one in my black car
It will be interesting to se what your setup can manage on the dyno! In Sweden all s12 were sold with ca18et.
