As I've said before, I recently bought a Del Sol with a B18C1 swap. The guy I bought the car from had the swap done at a shop. My question is, is it standard practice for a shop to recalibrate the tach after the swap, or does it even need to be recalibrated? The car is an S model so the dash redline is around 6000, but I'm wondering if taking it all the way up to 8000 (going by the dash) is such a great idea. I usually shift by 7000 because the engine is already going crazy enough at that rpm (and I rarely do this anyway). I'd hate to destroy such a beautiful car and engine. I suppose I could contact the seller again, but I was just wondering what is normally done with the tach after a swap. Thanks for any help.

 

Don't worry, the stock revlimiter is very safe, it'll cut fuel before you hurt anything. I doubt the tach can be recalibrated but I'm not sure. These motors are built to hit 8000 everyday.

 

Yeah, I guess I just got to thinking about how the tachs on the engines may produce a different output signal. Some voltage could mean 6000rpm on the stock motor and that same voltage mean 8000 on the B18C1. But, would it be possible I still have the tach from my stock engine, or is that replaced in a swap? If it's the same, there's no need to worry.

 

It's all the same, my old tach redlines at 6500 and 8000 is the very end and it is accurate.

 

My B16 redlines at 8200 RPM but my tach only goes to 8000 so I just shift at 8000

 

Actually if you go past that the tach needle goes into this little cutout. h: