So I have the luxury style E32 EU spec only BMW 735i. Its an inline 6 NA Fuel Injected. The engine in it is depressing. I did some research on the car and this one website said its supposed to have 210 hp and 305 torque. My parent's sienna has more get up and go than this thing, and its twice as efficient. This thing is chugging 30+ liters/100km while accelerating at a snails pace. The scale only goes up to 30.
I did notice a huge improvement of about 5 seconds with my thermostat though, but even then 0-60 is still 14 seconds. I replaced the broken one with an aftermarket 75C as opposed to stock 80C, Autobahn speeds driving and an old car, overheating. There is also an aftermarket K&N box filter. New spark plugs last summer. I did have to run the engine without a thermo for two weeks if that could do any dirtying.
I think there is a rattling tappet or valve on one of the forward cylinders, but the engine runs fine at al speeds, no quirks pop up at certain rpms. its kind of like a clicking sound. Could a loose tappet or valve be that detrimental to efficiency?
What I am wondering is how much of a difference new injectors would make for their cost, if I should get those fancy spark plugs that are 40$ a pop that promise a larger spark, replace pistons with high compression, maybe just spend some for a turbo or super?
Im even thinking about an engine swap, the bay is so huge I could fit almost anything in there, but I am reluctant to do so, inexperienced for one, but it does have a nice roar when it gets up to 6000 rpm, even if it does chug half the tank of gas.
I did notice a huge improvement of about 5 seconds with my thermostat though, but even then 0-60 is still 14 seconds. I replaced the broken one with an aftermarket 75C as opposed to stock 80C, Autobahn speeds driving and an old car, overheating. There is also an aftermarket K&N box filter. New spark plugs last summer. I did have to run the engine without a thermo for two weeks if that could do any dirtying.
I think there is a rattling tappet or valve on one of the forward cylinders, but the engine runs fine at al speeds, no quirks pop up at certain rpms. its kind of like a clicking sound. Could a loose tappet or valve be that detrimental to efficiency?
What I am wondering is how much of a difference new injectors would make for their cost, if I should get those fancy spark plugs that are 40$ a pop that promise a larger spark, replace pistons with high compression, maybe just spend some for a turbo or super?
Im even thinking about an engine swap, the bay is so huge I could fit almost anything in there, but I am reluctant to do so, inexperienced for one, but it does have a nice roar when it gets up to 6000 rpm, even if it does chug half the tank of gas.
Last edited: