I know diamondlarry has Somender's grooves in his Saturn's head.
http://www.somender-singh.com/
Has anyone else ran them? I put them in my flat head lawnmower's head and everything Somender claimed with respect to flat head engines seems to be true. I have much less unburned hydrocarbon. The exhaust is not as clean as a catalytic converter exhaust but it smells close. The engine has much better low end torque. The spark plug cleaned up. The exhaust valve is running quite clean. Maybe I should post a picture.
I am about to pull the head on my Saturn for only the grooves. That will be quite a bit of work but I am pretty stable at the current mileage and am looking for the next step. I think this might be it.
I am just looking for some more tales of success to motivate me. I wont be doing anything until after this current cycle of the mileage challenge.
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