M20B27 with 173 ecu

[2mAn]

My ecu is tuned and it goes to 6500 rpm maybe a little more what do you think would happen if the 2.7 went to 6500rpm

You would run an amazing 1/4 time. Please have a friend record a horizontal video.

[digger]

Well most of the sensors that were on the motor would connect into the wiring harness so they had to be swapped like the oil level reader, oil pressure sensor and crank shaft poison sensor etc all those sensors are completely different from each other that’s why I had to replace the vibration damper they are different in size

yeah there are bunch of things that need to be added / swapped to get it to work not directly plug and play

My ecu is tuned and it goes to 6500 rpm maybe a little more what do you think would happen if the 2.7 went to 6500rpm

high risk of loss of valve control resulting in loft and then valve bounce occurring which has been shown to cause the piston to tag the valves and bend valves because the relationship between valve lift and piston position goes out the window. People usually run the dual springs or at very least the single outer springs (beefier ones from M20B23) even better is the beefy outer springs and the inners which is even more rpm capable than the b25 setup

[Georgiyk]

so its not a true ETA then, the eta has a different vibration damper and trigger setup so that why people probably said it cant be done. the harness must match the trigger setup. so actually you havent done anything that couldnt be done

people have been running M20B31 engines for years on 173 ecu

My ecu is tuned and it goes to 6500 rpm maybe a little more what do you think would happen if the 2.7 went to 6500rpm

[Georgiyk]

so its not a true ETA then, the eta has a different vibration damper and trigger setup so that why people probably said it cant be done. the harness must match the trigger setup. so actually you havent done anything that couldnt be done

people have been running M20B31 engines for years on 173 ecu

Well most of the sensors that were on the motor would connect into the wiring harness so they had to be swapped like the oil level reader, oil pressure sensor and crank shaft poison sensor etc all those sensors are completely different from each other that’s why I had to replace the vibration damper they are different in size

[digger]

It’s a b25 I swapped basically everything to b25 only the head and block is a b27

so its not a true ETA then, the eta has a different vibration damper and trigger setup so that why people probably said it cant be done. the harness must match the trigger setup. so actually you havent done anything that couldnt be done

people have been running M20B31 engines for years on 173 ecu

[Georgiyk]

so it is the SETA or B25 vibration damper on the front? the one with lots of teeth on it?

It’s a b25 I swapped basically everything to b25 only the head and block is a b27

[digger]

so it is the SETA or B25 vibration damper on the front? the one with lots of teeth on it?

[Georgiyk]

which crank trigger are you using?

B25 crank trigger

[digger]

What do you mean b25 60-2 toothed vibration damper?

which crank trigger are you using?

[Georgiyk]

i gather you are using the b25 60-2 toothed vibration damper on the front?

What do you mean b25 60-2 toothed vibration damper?

[digger]

i gather you are using the b25 60-2 toothed vibration damper on the front?

[agent]

I just realized you have two threads

At least one of them was posted in the correct subforum. Now they both are.

[Georgiyk]

I just realized you have two threads, and in tho other one you said you swapped the head. That's not quite the same as using m1.3 on a 2.7. The 2.7i you made has been done so many times. I even have dyno results in my m20 dyno thread.

the motor I put in is all stock with a 200 head. I was saying my next build I want to do the super eta with a 885 head I have a head laying around my garage

[ForcedFirebird]

I know the motor will fall on it Face If I get on it and my car was already chipped when I bought it but I did this as a project just to see if the car would even start and I’m probably gonna wanna see how fast the motor will give up. My next build is the 1988 super eta with the 885 head I hand the head in my garage just kinda hard to find the block

I just realized you have two threads, and in tho other one you said you swapped the head. That's not quite the same as using m1.3 on a 2.7. The 2.7i you made has been done so many times. I even have dyno results in my m20 dyno thread.

[Georgiyk]

It won't "rip" for long. Even when putting a chip in an eta with only a 5500 rev limiter, the valves lightly kiss the pistons with sustained high revs. The 200 head only came with the outer valve springs, not the inner.

I have done the same as you in the past, but also used dual 325i valve springs - but - the 200 head falls on it's face at about 5000rpm, so after that it's just making noise.

I know the motor will fall on it Face If I get on it and my car was already chipped when I bought it but I did this as a project just to see if the car would even start and I’m probably gonna wanna see how fast the motor will give up. My next build is the 1988 super eta with the 885 head I have the head in my garage just kinda hard to find the block