Rb26 Rod Strength Settled!

[SimonR32]

I've run 520rwkw and 770nm of torque through stock rods and stock rod bolts for a few years now.That's with 8500rpm and 2bar on pump E85.

They are very strong but aftermarket are stronger and very cheap insurance

[Cateans05]

Thanks Simon only person with credible evidence! Im planning to run forged Jun pistons on stock rods. 450kw mark on a t04z. Limiter 8-8.5k also.

[Piggaz]

You're going to pull it down to whack some pistons in but for the sake of an insignificant amount not do the rods while you're there? Sounds a bit odd to me.

[GTR_JOEY]

I was going to say something, Paul put it a bit more politely

[Cateans05]

Have you seen the size of the rods? One of the reasons the rods are almost bullet proof is that fact the stroke is so short. The pistons are also really short and stumpy. The leverage needed to bend them would be rediculous (Never said is impossible) Im not using stock rods cos im cheap. Im using them to prove a point.

[zebra]

You're going to pull it down to whack some pistons in but for the sake of an insignificant amount not do the rods while you're there? Sounds a bit odd to me.

not only that but 2k worth of pistons.....

[Cateans05]

Pistons where $300 barely used with rods lol im building the engine myself.

[Joshbigt62r]

As I said in my first post if your got the motor apart why wouldnt you slap some h beams in. I know I would.

[r32-25t]

Have you seen the size of the rods? One of the reasons the rods are almost bullet proof is that fact the stroke is so short. The pistons are also really short and stumpy. The leverage needed to bend them would be rediculous (Never said is impossible) Im not using stock rods cos im cheap. Im using them to prove a point.

Pistons where $300 barely used with rods lol im building the engine myself.

these 2 post contradict each other

[Cateans05]

How so? Lol im using stock rods with pistons? Im stating stock rods or any rb26 rod will be harder to bend? Like i said lol

Im not putting chinese h beams in my engine. Ill stick what nissan made.

Anyways this post has turned to what i should do. As far as im concerned its not your build its mine. Ill do whatever im gunna do. Lets keep it on topic. Only one person since has actual evidence of rods out performing, rest are just irrelevant "comments"

[r32-25t]

That same post also states that aftermarket are stronger

[SiR_RB]

If ur gonna use stock rods atleast get some arp bolts and get them close and honed

But by the time you do it properly your better of with some forged h beams...

Up to you

[GTSBoy]

I would never use stock rods in any serious build without spending hours and hours on them; on the linisher, on the scales, on the x-ray machine, etc etc. And if there were very good aftermarket rods available at a reasonable price then I would have to value my time at nearly zero to justify doing all that instead of just buying the good aftermarket ones.

Just sayin'.

Edited March 15, 2015 by GTSBoy

[GTRPSI]

Years ago (back in the 70's and early 80's) when aftermarket rods were really expensive, we would spends days preping stock rods to be a "little" better than the stock items.

Today looking back at it, its pointless to try this, the labor cost of shot peeing, resizing and balancing the rods is much higher today compared to what labor costs were back then VS new aftermarket rod costs of today, its simply no longer economical to mod stock rods.

I simply wouldnt throw out stockers and put some aftermarket ones in, and then sleep at night knowing i had something even stronger than the modded stockies.

[zebra]

I would never use stock rods in any serious build without spending hours and hours on them; on the linisher, on the scales, on the x-ray machine, etc etc. And if there were very good aftermarket rods available at a reasonable price then I would have to value my time at nearly zero to justify doing all that instead of just buying the good aftermarket ones.

Just sayin'.

yeah....but he is proving a point....not sure what that point is exactly....but im sure it is pertinent.

but hey...300 dollar used pistons.....what could go wrong...

[r32-25t]

I'll put my hand up and say I'm changing my rods in my engine, but I'm not pulling the engine apart either

[Missileman]

What about aftermarket rods with stock cast pistons? The same scenario, too much risk and not enough savings.

[Cateans05]

37 comments. Only one thats worth taking serious. Rest is "advice" from people who have never ACTUALLY done it. Infact most of you dont even own a rb26, or even built a engine.

"Adam's R34 GTR now makes 557kw@31psi with a small shot of nos, and 509kw@29psi without nos.

It has a stock RB26 with cams, gears, springs, studs all drop in, HKS T51R turbo, custom fuel system with triple 044 and under car surge tank all manufactured in house, nismo cooler, os triple plate clutch, intercooler, all controlled by a Haltech Platinum Pro and I/O box setup.

Adam wants to see what the stock bottom end can take. Looking forward to power cruise tomorrow."

-Just Engine Management

Keep your eyes peeled ladies.

[zebra]

I love posts like that...because what does "can take" actually mean?

1 hour? 1 year? 10 years?

[Ben C34]

So why are you changing pistons if Adam didn't?