Standard Vs H Or I Beam Rods

[Turbz_13]

how are ya guys, now im facing kind of a hold up with my rb rebuild. i dont know what type of rods i should use. i kno there is about a 2 grand diff in price including balancing etc. but i am still not sure what i should use.

i will be say chasing after 350 4wkws as a ball park figure (which is about 400 rwkw's i think) and i really only want to rebuild this engine once.

what should i use?

cheers guys

Edited December 4, 2006 by Turbz_13

[djr81]

For that much hp you should be using aftermarket rods.

The differences between H & I patern rods (In terms of performance) is less than some people make out. H pattern (for the same weight) arguably have a lower rotational inertia hence are favoured for high revving motors. I beam rods have a greater stiffness in beding along the crank axis. Best bet is to find one you like (in terms of stated strength) & price.

[Turbz_13]

how much power can the standard rods handle?? say at all 4 wheels

[benm]

I've spoke to numerous people running 400+ rwkw with standard (prep'd) rods.

[R31Nismoid]

Stock rods are more than adequate

I ran 369rwkw/24psi on stock GTR rods for around 6 months. No issues.

I know of people making a fair bit more and for a fair bit longer

[djr81]

Stock rods are more than adequate

I ran 369rwkw/24psi on stock GTR rods for around 6 months. No issues.

I know of people making a fair bit more and for a fair bit longer

Hmm, I take the view that for the kind of money you need to spend to get 500rwhp or thereabouts & if you are opening up the engine why wouldn't you spend the extra for the rods?

But like you say it can be done on an unopened motor or with crack tested rods.

[Turbz_13]

when you say prep'd rods, what is prep'd mean

Edited December 4, 2006 by Turbz_13

[Turbz_13]

and if i keep the car i really dont wanna have to open it up again to replace inturnals after they died from to much power. if i get the power i want. just thought i better add that bit

[GTRsean]

I would think he means crack tested, shot peined, linished and balanced. Sometimes even resized. Plus the usual ARP rod bolts, Tomei or equivalent.

[R31Nismoid]

Hmm, I take the view that for the kind of money you need to spend to get 500rwhp or thereabouts & if you are opening up the engine why wouldn't you spend the extra for the rods?

But like you say it can be done on an unopened motor or with crack tested rods.

I take the view, spend the money where its required, not where you dont need too.

Most people are on a budget of some kind in most cases.

All well and good if you dont have a budget, but if you can save a few bob, why not.

I didnt say an un-opened motor at all

My example, and references were to motors that have ALL been opened up.

The all run a set of forged pistson, stock rods and stock cranks plus everything else that goes into a rebuild.

My car itself was an RB25 with GTR rods.

[fEkuaR]

Personally if i could afford it id deffinately get a new set of rods just for the self reasurance that the engine will be up to the task. Im not debating whether the standard rods would be good enough or not. Though myself i wouldnt want to push standard items that far after spending huge dollars on everything else in a setup that could achieve that sort of power.

Id spend the extra cash sell the standard rods for a bit towards them and feel a little more confident when i put my foot down that all will be alrite.

Just depends if you have the cash...

[gun32gtr]

it comes down to this. if u have the dollars why not...

if not prep the stockies and save the cash.

if u plan on making more power in future my be good idea however

[Gav]

If you get "crack testing" done, make sure you know exactly what type of tests will be performed.

Personally I would only recommend x-ray testing as magnetic particle testing, although cheaper, isn't as reliable for detecting stress fractures on for complex shapes like rods.

[Turbz_13]

so looks like standard rods are stronger then i first through. i may just use a new set of 26 rods in my rebuild then. save me 2 grand and buy a haltech insted

Edited December 4, 2006 by Turbz_13

[gun32gtr]

sounds like the go,but id get pfc ecu

[VHR32]

PM 'spoolup'

New SPOOL RB26 Conrods $750

[gun32gtr]

PM 'spoolup'

New SPOOL RB26 Conrods $750

thats cheap maybe worth a look if there any good

[Turbz_13]

my budget is about 10k, would have be fine and could have dropped h beams in if they didnt find a few other things wrong. so now i need to do the best possible for the cheapest!!! with the power figure still in mind

[gun32gtr]

wsell wouldnt pfc be cheaper than the haltech

[gun32gtr]

pfc+hc delievered for $1000 bucks mines on order now.cant go wrong i reckon.....