Dyno Test For My 205mi16

[FirSt95 0]

This is my video of a Dyno Test. I've got "only" 145.5cv, What's wrong on my car???

 

XU9J4 rebuilt engine 15000km

55mm exhaust

PiperCam bp270

LcDevelupment Chip

 

 

 

sorry for the quality

 

[welshpug 1,661]

D6C or DFW? was it done in 4th or 5th?

 

 

is the camshaft timing correct?

[FirSt95 0]

It's D6C, the version with knock sensor.

 

The camshaft are mounted with standard pulleys.

[petert 588]

Engine might be worn out. What your cranking pressures for each cylinder?

[FirSt95 0]

Engine might be worn out. What your cranking pressures for each cylinder?

 

I rebuilt the engine the last year. Only has 15000km.

 

This week I mesure the pressure on the cylinder and tell you the result

[matyasg 0]

It's D6C, the version with knock sensor.

 

The camshaft are mounted with standard pulleys.

Is it sure that there are D6C pistons in the engine ("Z" stamps on the top)?

I ask it because I saw several engines which were told D6C but they were DFW inside.

Edited June 16, 2010 by matyasg

[petert 588]

I rebuilt the engine the last year. Only has 15000km.

 

It might be broken. Either way you need to measure the cranking pressures to give some clue as to what's going on.

[apinski 0]

Do you measure Lambda or air/fuel ratio?

[KRISKARRERA 2 1 Cars]

I had this result on my first Mi16, yet the compression test results were good.

[FirSt95 0]

Searching old photos, I've found one of the piston

 

I only read something like an "E"

 

 

 

I alse change the Knock sensor, but I haven't feel nothing better.

[matyasg 0]

Searching old photos, I've found one of the piston

 

I only read something like an "E"

 

 

 

I alse change the Knock sensor, but I haven't feel nothing better.

I think this is an aftermarket piston so only a measurement would tell the truth.

[B1ack_Mi16 67]

Searching old photos, I've found one of the piston

 

I only read something like an "E"

 

 

 

I alse change the Knock sensor, but I haven't feel nothing better.

 

Not all pistons have the markings. I have opened a 1987 XU9J4 from a BX which had unstamped pistons.

Probably produced before they decided they were going to make a low-comp version.

[FirSt95 0]

I tested de compression, It's about 12bar of my gauge.

[Vili 18]

I tested de compression, It's about 12bar of my gauge.

 

Sounds healthy to me, but did you test all 4 cylinders?

 

I´d say that problem is most likely in the camshaft timing. The peak power is on very high revs. I would expect it to bee closer to 6800, though I'm all but an expert.

Edited June 22, 2010 by Vili