6G Celicas Forums

I was wondering what the weight difference is between the stock pistons and connecting rods when compared with the aftermarket ones.

More specifically the 3sgte pistons/rods when compared to JE pistons/Eagle rods.

Edit: Actually I think I have a Gen III connecting rod and piston. If someone has a JE piston and eagle rod I would like to know the weight.

This post has been edited by match220: Jun 22, 2011 - 8:43 PM

U trying to rev to 10,000 rpm too?

lol..yes, autronic EMS can handle 16k rpm, not sure what my 4channel bosch igniter can handle, but my individual coils (from a yamaha R6) can handle 14k rpm, that just leaves injectors and internals. I knife-edged my crank 4 years ago, I really shouldn't have, but I didn't really care back then cuz I had the money to blow. Now I wish I would have built it a little more stable, we'll see. I've heard the 3s crank is strong enough to hold when knife-edged.

I thought the 3S crank was factory knife edged?


And to answer your question I believe that any forged item of its OEM equal should weigh less and be stronger...atleast thats how it is with rims...


If you get good springs, new valves, fresh gaskets on Everything and a steel headgasket, theres quite a bunch of stuff on nengun to make it rev faster...aluminum pulley etc what cams are you gonna run for that rpm?

The stock 3s crank looks like a regular crank. Maybe the beams 3sge has a knife-edge, but not the turbo.

I HAD HKS 272 duration 9mm lift ones on it. BUt I had to trade them for a lot of other parts that I needed. And when I change the springs I tested the PSI of the stock springs against some dual coil ferrea valve springs and the stock turbo valve springs are actually better than the aftermarket dual coil ones that I had.

stock springs vs ferrea no **** man so how far are you planning to get on stock springs

all I'm saying is the stock springs could handle more PSI than the dual coil ferrea ones that I had. More PSI means better spring back, and a lesser chance of valve float at high RPM's. SO for now, I'm running stock ones, until I find something better than the Ferrea ones. I tested the PSI of the stock nonturbo ones, turbo ones, and ferrea ones. Turbo ones could handle 80psi I think, Ferrea dual coil were 60? It's been a while but that's what I think it was. Also the Ferrea dual coil ones couldn't handle the high lobes of the HKS 272 ones I had, since the lift was 9.2 and 9.5mm on I and E. Just because they are stock doesn't mean they are bad, Mechanical Engineers work at Toyota just like mechanical engineers work at Ferrea. Keep in mind though, the 3sgte head was designed by Yamaha, and their sport bikes produced around that time (FZR600/1000 YZF600) redlined at around 12,500 RPM. I know this because I have an FZR600. No valve float, I've had my bike up to those RPM's. The inside of my FZR head has the same shim under bucket design as the 3sgte.

yeah but are they new stock or 10 year old springs? i thought the speed was what mattered not the strength?? if that makes sense?

The head is a nonturbo head and I put new stock turbo springs and used turbo cams in it..i had originally bought the ferrea springs for it but I chose the stock ones because of how much better they seemed. It sucks that I had to sell my hks cams.