Hi, I drive a Volvo 850 with a KME car gas system. I wanted to use another one now because the engine is gone; and that’s the one from the V70I (which is already lying here). I had the following problem because of the engine control, because the V70 engine has a variable camshaft control: As in another block already described, I would have to make the whole cable salad new, stop because of this camshaft control, and then I decided to take the cylinder block and its piston out of the V70 and make the rest, i.e. cylinder head with camshaft and all the stuff, again on top of it. Why do I do that exactly like that, is described in another post. I have now, however, the one question, namely, how to deal with the gas system??? Can I just remove the cylinder head above or fly it all around my ears. Someone also told me that there is a safety device on a component of the gas system, with which I can already screw around at the front. I can do the engine conversion with one who knows well, however, if I don’t need to drive the gas systems.