2.9 Stroker Questions

[ex9.5]

I have built a 2.9 from a super eta engine. MM pistons, springs, 272 cam and I have noticed that there is a different part number for a SETA and a I Harmonic Balancer. Is it timing, marks or weight the difference? Also, the car was an automatic and my donor was a eta car for the transmission, not a dual mass, but I'm looking to put in a lighter fly wheel (suggestions?). And last question: I also have 17 lb. injectors with a mark D 25 chip. What should I be using for a chip?

[digger]

the pulley for the belt is different size (larger) so you must use the corresponding water pump pulley otherwise it wont fit. Timing and markings are the same.

[dark89e30]

They are different crankshafts. They need to be balanced differently. Do yourself a favor and lock your hood and give your bmw shop the only key.

[nando]

They are different crankshafts. They need to be balanced differently. Do yourself a favor and lock your hood and give your bmw shop the only key.

it's a *harmonic vibration* dampener, not a balancer. M20 cranks are naturally balanced. keep your ignorance to yourself, thanks. ;)

[ex9.5]

I have built a 2.9 from a super eta engine. MM pistons, springs, 272 cam and I have noticed that there is a different part number for a SETA and a I Harmonic Balancer. Is it timing, marks or weight the difference? Also, the car was an automatic and my donor was a eta car for the transmission, not a dual mass, but I'm looking to put in a lighter fly wheel (suggestions?). And last question: I also have 17 lb. injectors with a mark D 25 chip. What should I be using for a chip?

[SamE30e]

They are different crankshafts. They need to be balanced differently. Do yourself a favor and lock your hood and give your bmw shop the only key.

Easy there trying to be a bad ass. He build an engine, that takes knowledge. It was a reasonable question.

[SamE30e]

I have built a 2.9 from a super eta engine. MM pistons, springs, 272 cam and I have noticed that there is a different part number for a SETA and a I Harmonic Balancer. Is it timing, marks or weight the difference? Also, the car was an automatic and my donor was a eta car for the transmission, not a dual mass, but I'm looking to put in a lighter fly wheel (suggestions?). And last question: I also have 17 lb. injectors with a mark D 25 chip. What should I be using for a chip?

I think D'sylva tech (MarkD) makes a stroker chip.