Choku_Dorian

this is rad.

I am running almost identical setup, with enthalpy tune. just the s4 cams...

Blacklines86

Thanks for answering my questions, I appreciate it. I went back and looked at the first page, and I saw that it was already stated the setup included an external wastegate. After reading the 8 pages in this thread, I must have forgot.

What is your opinion of knife edging the crank? There is a service called "butcher crank" that does this, and takes 7 lbs. off in the process. Would this be beneficial to this setup, or is it too much material to take off? Would a less aggressive knife edge and a balance be better?

Assuming one were to do the agressive knife edging, how would additional lightening of the drive train affect preformance, such as lightened flywheel, carbon or aluminum drive shaft, etc?

Im aware of the rotational mass discussion, but the arguments go back and forth, so I'm not sure what to believe about this issue.

Any thought or opinions?

2fast4y0u

i can say this from a user point of view...i HATE my fidanza flywheel. weighs 8 lbs and it is the worst part i have ever bought for my car, hands down

i know u r gonna ask why, so i will tell u now. hard to street drive, replaceable faces sounds like a great thing...SUCKS! they r to thing and they heat up fast and get all spotty. that makes it eve worse to drive. Fidanza doesnt stock that part and they make it to order, so getting them is never easy.
just my $.02

Blacklines86

Actually, thats exactly the type of feedback I am looking for. People that have experience with using these kind of parts, and not just talking out of thier ass.

Lots of opinions, but little experience.

Thanks man.

mattsil80wis

i run a lightened flywheel and an aluminum drive shaft and i dont really mind driving it....i am running a JWT 11lb flywheel, but i like it


i have no experience with changing the crank shaft....the idea is great and makes sense, but than you have to take into consideration how it changes the rest of the rotation assembly...as in getting it balanced and everything else....is the price of doing all that really worth the benefits of a few hp?...i cant imagine it being that great

codyace

I wouldn't worry about doing any sort of exotic bottom end work, this side of a race car. I mean that's not to mean it 'will hurt' it's just not needed for any street oriented car.

I'd also say save that money and focus on keeping the rest of a car in good shape - I'd sooner save that money and put it towards larger brakes or upgraded tires instead of the 5-6 whp you may see.


Edit: While I do appreciate good questions, lets try to keep this discussion about the rom tunes, no so much individual setups. I'll be glad to answer PM's and also suggest you places for other information as well. Remember the best 'answer' involves the best research - no single person has the best information on everything.

__________________

Want Air Conditioning in your SR20 Swapped car? Check out www.sr20acbrackets.com for more information!

Quest Alternator Conversions for SR20! Check my Group Buy!

Tired of lousy internal gates? Go external wastegate with one of my manifolds, Check out my group buy

Blacklines86

I understand the reason you started this thread, and I apologize for cluttering it with off topic questions. Unforunately, I bring nothing to the table discussing rom tunes.

However, I was looking for clarification about the way you have your engine and drivetrain built. I think you have a very solid map to a 400hp street machine, and I respect your knowledge.

In the future I will keep to the topic, and stick to PM's for off topic material.

Thanks for your answers, I appreciate it.