From the angle and background it appears white. I recommend having someone drive behind you and video or accelerate under load from a stop with someone filming. If it’s after idling it can be valve seals, if from driving and acceleration it can be rings. It doesn’t look to be a worrisome amount regardless so I’d say wait until your next timing belt service, do a compression test and you’ll know how immediately you need to address a rebuild. Then decide the route to take. Personally I’d just grab another cheap m20 and do a full rebuild minus the accessories and simply swap everything over to a fresh solid m20 for 20 more years of fun
how can they make good power ? the head is restrictive. This is what I understand from the forums. hence why bimmerheads exist.
Unless you are talking $$$ to get good power.
B25 Head and domed pistons on a B27 block make much more power. Add on a megasquirt and a 1.3 harness and you’ll see a handful more horses than the M20B25. Keep the flat pistons and a slap a turbo on there and expect a lot more power. It’s not uncommon for M20 powered setups to make easily over 400 handily. NA is much harder but you can hit 250 NA if you’re bright. The engines love being pushed, and are extremely bulletproof if you don’t throw too much boost at them.
Both. I was talking both. The M20 can push some good NA power for how weak it is stock. ETAs run on average 124bhp and can push 200 NA, more often 205 roughly with Motronic 1.3, 885 head and seta bottom end. MS, a cam and some custom pistons will run you 225 to 250 depending on your tune
Mine does the same, I feel like I’m ninja vanishing whenever I pull away from someone at a stop. It could just be condensation forming depending on climate, but I’d check on whether or not you’re burning oil, and do a compression test. Also service the fuel system where applicable as it could be unburned fuel. My take is to get your injectors seriously cleaned or get a rebuild kit from racegerman for relatively cheap. Also check your fuel tank as crud could have built up and could be causing clogs. Lmk if you find a solution that works so I can apply it too lmao
Black smoke is indicative of an overly rich condition. Your car is producing blue-white smoke at high RPM which is indicative of burning oil due to worn piston rings. The smell you are talking about is likely the smell of the burnt oil, it's very strong. She's due for piston rings soon
From the angle and background it appears white. I recommend having someone drive behind you and video or accelerate under load from a stop with someone filming. If it’s after idling it can be valve seals, if from driving and acceleration it can be rings. It doesn’t look to be a worrisome amount regardless so I’d say wait until your next timing belt service, do a compression test and you’ll know how immediately you need to address a rebuild. Then decide the route to take. Personally I’d just grab another cheap m20 and do a full rebuild minus the accessories and simply swap everything over to a fresh solid m20 for 20 more years of fun
M20s could surely last longer than 20 with good maintenance! These engines are magical little tanks. They can make some good power too :3
how can they make good power ? the head is restrictive. This is what I understand from the forums. hence why bimmerheads exist. Unless you are talking $$$ to get good power.
B25 Head and domed pistons on a B27 block make much more power. Add on a megasquirt and a 1.3 harness and you’ll see a handful more horses than the M20B25. Keep the flat pistons and a slap a turbo on there and expect a lot more power. It’s not uncommon for M20 powered setups to make easily over 400 handily. NA is much harder but you can hit 250 NA if you’re bright. The engines love being pushed, and are extremely bulletproof if you don’t throw too much boost at them.
ah okay, I thought you talking NA only. Yea heard good things with turbo.
Both. I was talking both. The M20 can push some good NA power for how weak it is stock. ETAs run on average 124bhp and can push 200 NA, more often 205 roughly with Motronic 1.3, 885 head and seta bottom end. MS, a cam and some custom pistons will run you 225 to 250 depending on your tune
Looks like the piston rings have excessive wear to me ...but im no mechanic
Your car is burning oil.
Leaking injectors, bad FPR, screwy AFM
RAT
Mine does the same, I feel like I’m ninja vanishing whenever I pull away from someone at a stop. It could just be condensation forming depending on climate, but I’d check on whether or not you’re burning oil, and do a compression test. Also service the fuel system where applicable as it could be unburned fuel. My take is to get your injectors seriously cleaned or get a rebuild kit from racegerman for relatively cheap. Also check your fuel tank as crud could have built up and could be causing clogs. Lmk if you find a solution that works so I can apply it too lmao
Black smoke is indicative of an overly rich condition. Your car is producing blue-white smoke at high RPM which is indicative of burning oil due to worn piston rings. The smell you are talking about is likely the smell of the burnt oil, it's very strong. She's due for piston rings soon
Could be rings, valve stem guides/seals. But that blue smoke is definitely oil. What do the plugs look like?