Faeflora

iTrader: (2)

I'm a cagefighter vegan. Serious.

my97miata

Still no word on the specifics of this unit, no word on cost, no word what it's suppose to do as to is it increases low end and mid range torque. So why should we interested if the seller offers up no info?

EO2K

iTrader: (37)

JKav (Jason Kavanaugh) works for Inside Line (Edmunds) and he's not selling anything. I'm sure all the gory details for the build will be included in the continuing "1997 Mazda MX-5 Miata: Long Term Road Tests" series found here. You can read about the details as soon as they publish them, just like everyone else. As to the benefits, look at the link hussy posted or read the damn article linked w/comments and it should be somewhat obvious.

Ungh, why do I bother?

18psi

iTrader: (76)

lol
this is not an advertisement.
its a show off of badassery

Seefo

iTrader: (5)

EO2K...Haha, you were nicer than most would have been.

2manyhobyz

iTrader: (4)

BP rod length and piston height
5.228 + 1.20 =6.428
Honda rod and custom piston length
5.392 + 1.020 = 6.414 (.014 diff) Rod ratio increases to 1.611

The BMW rod is 5.510.
This means that the piston height must be .919 (23.342mm)to make the stock height of 6.428. Rod ratio works out to 1.64. I didn't think J&E or Wisco could do that short.
JKav, what did you say the piston height was for these?

EO2K

iTrader: (37)

I know, I need to put away the noob spoon. Sinus infection + bronchitis is a ----------er, but the drugs sure are good!

hustler

iTrader: (6)

You know those "most interesting man in the world" commercials for Dos Equis? Thoese were originally written for Jkav in a previous life by Billy Shakespeare.

vintagerust

I'd like to see how changing the rod ratio changes the harmonics of the motor (make it run smoother/vibrate less, hopefully). I read that article from MotoIQ when it came out, and they noted that their SR20 seemed to have run quieter(?).
In for results.

Savington

iTrader: (31)

Basically this. My favorite thing to read on the internet is people arguing with JKav - it's like interviewing the conductor of a train while they're in the middle of crashing it.

emilio700

iTrader: (3)

A friends long rod 1.9 is the smoothest revving BP I have ever driven. No science there but my SOTP impression.

vehicular

iTrader: (3)

So, who is going to call Mil.Spec and get a group buy worked up?

y8s

iTrader: (8)

the same guy who calls JE for the piston group buy?

Efini~FC3S

iTrader: (4)

I spent many an hour pouring over con-rod specs to try to find an off the shelf rod for a long rod for my non-vtec b18 motor. MotoIQ is building a long rod vtec B18 motor using Nissan rods but suprisingly the non-vtec and vtec crankshafts are quite different, so the Nissan rods won't fit my crank (non-vtec rod journals are wider).

My question was always this: What change in rod/ratio makes this all worthwhile?

Of the long rod builds I've heard about, everyone seems to be getting around a 0.08 increase in rod ratio. That's about what motoiq got with their SR20 motor and it seemed to have an appreciable affect.

To get a +0.08 rod/ratio for my non-vtec B18 it looked like I was going to have to get cutom pistons and rods, the dollars and cents just wasn't adding up for me.

vintagerust

I figured as much.
If I ever do build a block, N/A or turbo, I would definitely cough up the coin to do this.

Faeflora

iTrader: (2)

Fu power. I just want smooth. Like a Buick. /you

vintagerust

^lol. While smoothness is one of the noticeable effects, I assure you that is not my reasoning for why I would choose to build a long-rod motor.

JKav

iTrader: (1)

More geeky deets, this time on the JE pistons. FSR, yo.

http://blogs.insideline.com/roadtest...the-house.html

EO2K

iTrader: (37)

Pssht, I'd be in. Hey Sav, wanna put a set in my motor?

Such a tease...

Reverant

iTrader: (10)

Question on the 2618 alloy. Since it has a higher rate of thermal expansion, and thus requires larger clearances, doesn't this mean that on a "daily" engine, were the engine spends a significant amount of time in cold condition, the cylinder walls will wear down a lot quicker, promoting an oval-like shape and losing compression in no time at all?

This seems like an alloy ideal for racing applications, where you don't actually expect an engine to last more than 10,000-20,000 racing miles.