Okay, I have been all over on what to do with my car. Someday as in years down the road it will get an s50, but for now it needs work and I need info on what will work and what doesnt.
My goal is to make a 2.7 liter high output eta with a low budget. The objective is to use eta internals with eta head incorporating dual valve springs, all new guides, seals, 3 angle valve grind, and a slight deck to increase compression. I need input on what to do with the ports. I want to keep them smaller with the longer runners to make more torque but with luck I will extend the redline to 6k and will need to get more air into the motor at that time. Should the ports be opened to 'i' specs? I will also use the i throttle body and match it to the e intake.
The next question involves the flywheel. I know my car has a dual mass which weights a lot. What options do I have there? Did the pre 86 etas have a slightly lighter flywheel, and would it be noticable? The 325i is out of the question due to the speed sesnor correct? One more ?, I heard the 323i flywheel was around 8 pounds.. compatibility?
The motor will be finished off with a j/c chip to start unless I can use something else to bump the revlimiter up. i dont need to rev to 6500 since I hear the cast eta crank is better spun to 6k instead. The final piece would be a 3.35~3.46 differential. I want to go this route, because as it is now my car has enough power to run with i cars to a certain point. I want the low end power, So please dont tell me to get an i motor unless you know where i can get a low milage complete motor for around 450~500 bucks. I know some of you out there know a lot about these motors, I have some knowledge but not enough to start this on my own.
My goal is to make a 2.7 liter high output eta with a low budget. The objective is to use eta internals with eta head incorporating dual valve springs, all new guides, seals, 3 angle valve grind, and a slight deck to increase compression. I need input on what to do with the ports. I want to keep them smaller with the longer runners to make more torque but with luck I will extend the redline to 6k and will need to get more air into the motor at that time. Should the ports be opened to 'i' specs? I will also use the i throttle body and match it to the e intake.
The next question involves the flywheel. I know my car has a dual mass which weights a lot. What options do I have there? Did the pre 86 etas have a slightly lighter flywheel, and would it be noticable? The 325i is out of the question due to the speed sesnor correct? One more ?, I heard the 323i flywheel was around 8 pounds.. compatibility?
The motor will be finished off with a j/c chip to start unless I can use something else to bump the revlimiter up. i dont need to rev to 6500 since I hear the cast eta crank is better spun to 6k instead. The final piece would be a 3.35~3.46 differential. I want to go this route, because as it is now my car has enough power to run with i cars to a certain point. I want the low end power, So please dont tell me to get an i motor unless you know where i can get a low milage complete motor for around 450~500 bucks. I know some of you out there know a lot about these motors, I have some knowledge but not enough to start this on my own.
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