That sounds so NICE! I have this weird intuition that you are doing something that I'm doing....

Are you doing the work (lightening) yourself?

 

No. I Had a shop do it (along with piston and con rod work). (this isnt something you can do yourself unless you own a machine shop, and even then you probably wouldnt have the correct equipment to do it properly)

 

Best friends a machinist, I'm aware and capable of having it done correctly. :-)

Waiting on my pistons to come in (Wiseco- had best price) and then will have the bottom end done up. Knife edge worth it?

 

I can't wait until stuff like what you 2 just posted doesn't sound like chinese to me. In to know more.

 

I'm at a point where it's more like a a Chinaman speaking English with a rough accent.

 

^^^LOL, you funny!

 

Got it. Just wanted to clarify.

Well the only products that have been discontinued and brought back are the CT-E headers, which are gone and we are trying to bring back, and the UR crank pulley, which was gone and we brought back. It isn't a tactic. It's a true statement. The pulley is only made for us and that is because we shelled out the money to make more so it could still be a mod available for the 2nd gen CL/TL. But unless I can produce this in a small quantity I won't be making these again either. China wins again. Low budget pulleys, headers, brakes, exhausts, etc will dominate the 2G market.

 

thats good. Hopefully he has done it before and knows how to balance a crank

 

Stock left, the right has been knife edged and lightened. See the material taken off of the weights, and how they come to a sharper edge like a knife? It cuts thru the oil smoother and has less weight which reduces rotational mass which frees up power just like the crank pulley and light weight flywheel. (the mass that was taken off of my crank equates to roughly 32 hp (this is coming from someone i know that used to design crankshafts for ford)

 

32HP??! Oh Fuuu

Are there any disadvantages/side-effects? How much did it run you?

 

that junk is crazy...amazing where you guys find HP in our motors. So cool. Thanks for sharing!

 

32hp my assholio. I'd believe you ONLY if you first showed dyno results of a big block V8 producing these kinds of numbers! Are you speaking in terms of crank lightening/knife edging only or in conjunction with balancing the lower end components as well....that MIGHT a little feasible.

 

there is little to be removed from the rods/pistons but every little bit helps. Believe what you want. He did the math. He designed cranks for the powerstroke and a few other motors. Going by rotational mass (every thing rotational was weighed compression ratio (which will be around 12:1 to 12.5:1 and a few other variables that is the rough # that came up, also given the fact i will be using a light weight flywheel and crank pulley it looked as though more was possible. Now its all speculation due to mathematical calculations and what he has seen by reducing mass internally. The big key is how much more freely the motor will rev due to the reduced mass.

Also you would potentially see more gains on smaller higher reving motors than a big block. How do you thing F1 cars achieve 18K plus rev limits and 850+ horse power on small 2.4 liter V8s on regular pump gas naturally aspirated? It comes down to reducing as much mass as possible for starters (they weigh in at 210 lbs).

 

...and F1 weighs 210 pounds? HOLY SHT, I'm learning all sorts of stuff today. Youngun...you're approach is brash, especially with a senior mod!

 

Nah, he just questioning to learn. Plus, Fatty don't care about stuff like that.

I gotta say though, 32HP is insane. Why wouldn't they do that from the factory? My first guess is cost, but maybe there is also a downside? Reduced durability? Thus, my two questions I asked in my last post.

 

I wonder...who knows how much they shaved down to even give us the 287hp we DID get!!! ?!?!?

 

Yes, durability can be reduced. I dont plan on the motor making 500k miles like a typical honda motor. Especially if and when i get it fully tuned (still working on that, need to see if the ECU they have made for the 3rd gen can be made to work) and up the rev limit. Im looking to hopefully make power to 7500. Not going to stop till i get over 350+whp na (thats part of what is taking so long in the build)

 

Well, that much, I KNOW is very doable.
Fasttyms, have you read up on gerzands build?! He had a cammed 3.2...then upgraded to a full type s and transferred a lot of his knowledge to it...I want to say he was at 400 N/A (or close to it). I apologize for the lack of specifics but PM him and see where he's at...probably same path you're on.

 

I learn something new everyday on the site, Amazing...

 

The problem is is tunning this pig. the 2gcl 6 speed ecu has a messed up crank sensor that standalones dont play well with. .

 

Is that a civic crank? That aint no v6 or v8 or f1

A 4 cylinder crank has 8 big counterweights and is a flat crank making it easier to balance once the weight is taken off, v6 only has 4 and is not flat, you won't be able to shave off enough to make a difference. You'll get very minimal gains and they will be at 7000rpm+. This kind of mod is used on engines the live in the +7000rpm range. You usually won't see it on big v8's because taking that much off means you need to add weights just to balance it.

The "knife" part of the crank doesn't actually cut through the oil. The leading edge cuts through, the knife part just follows it. Imagine trying to push a v-hull boat through the water ass end first. and it doesn't cut through oil, it's spinning through oil vapor. The best thing you can do is to reshape the leading and trailing edge to a more aerodynamic shape to reduce the drag, add a windage tray or screen, add a crank scraper and/or add a vacuum pump.

The reason why Honda didn't do it. Cost, hard to balance, hard to dampen vibrations and harmonics. The heavier rotating mass, crank, flywheel and pulley, absorbs and stores more energy making the engine feel more smoother and getting better gas mileage.

 

no thats not a v6, it was used for explanation purposes only.

I agree to a point on your info, The knife edge would cut thru the oil IF there wasnt a windage tray in the way. And the best actual shape would be more of a rounded shape (like the leading edge in your pic) as it would produce less drag. Im not concerned about it as we have a windage tray. Im solely looking at it as a weight reduction (i had one crank done already that was able to get 7lbs taken off and balanced, current one is a little less). My motor will spend a lot of time high up in the rpm (as it does now) I have done this work a few times before on previous cars and yes, driveability is reduced. You have to learn how to drive it.

 

GL if you're going to tackle the tune. Potentially walking into a nightmare.

 

I love when people blatantly ignore engineering facts because *they* don't understand it.

 

i had that same issue when trying to tune my S/C'd auto. tuning issues with the J motor was the main reason i said fuck it and moved on.

 

And who are you speaking to?

 

Kinda looks like im going to switch back to the auto harness and get the AEM 30-6051 to fully tune it There is a dyno shop not far from here that does alot with the aem units.

 

Sorry I was reading along the thread and responded before getting to the end, I see that everything has been laid out concerning the benefits of reduced rotational mass. It was the there are still 4200lbs on the other side of the crank that got me, the engine itself actually see in the hundrends of pounds thanks to the gear box, so lightening anything out of the say 300lbs your car actually "sees" in first gear makes for gained performance.

 

Is this the only option for EMS? There isn't anyway to use it with the 6speed harness?

 

he was addressing youngone...at first I was like "who you talking to, buddy... " lol.

 

Negative. It's NOT made for our cars. If you buy it and call them for help, they'll just tell you the TL is not supported. It is made for J-swaps on civics.

 

Have any idea why Assman couldn't get passed 3k rev?

 

nope. but plenty others have it working on j swapped cars. just check out j32dotcom

 

FTFY