How much power can conrods handle?

[CMF_Michiel]

I'm planning an engine upgrade for my CG13DE engine. At this time my T20 turbo delivers about 0,5 bar (7,3 psi).
I want to lower my compression using low compression pistons but I'm wondering how much power the original conrods can handle before they bend or brake?

My engine will be O ringed and the pistons will be oversized.

I think I'll be happy with about 150/160 bhp.

Thanks.

 

[CMF_frank2]

michiel

200 apparently ( probably rpm not power that will throw a rod )
http://www.micra.org.uk/showthread.php?t=18421&highlight=conrods
i recall a gasket with copper rings ( might not need machining ie,no o ring cutouts )

 

[CMF_Michiel]

Thanks, haven't found that topic yet.

Can anyone else conform that high rpm can bend or brake the conrods, and with a turbo on high boost (for example 1 bar (or 14 psi)) the stock conrods can handle that amount of power?

 

[CMF_sarge3uk]

i have been told in the past 200bhp power but like stated its revs that kill it you shouldnt have to rev hard with a turbo any way

 

[CMF_turbo march-rolling shell]

yeh, rpm will kill them, keep it under 7500-8000. a turbo that small won't put much stress on it at all, and with any more then probably 14psi that turbo will just be heating up the air anyway. if you want to be safe, get them shot peened, and try and see if you can get some aftermarket bolts for them, arp can custom make them, but the turnaround time is pathetic. the bolts are normally the weakest point in stock rods.

 

[CMF_Michiel]

Thanks, our Nissan guy can get the conrods shot peened and some make custom bolts for the conrods (he also suggested this to make it more reliable).

He also suggested to get the shot peened conrods weighted and make them equal weight by drilling them.
I don't think this is necessary but maybe it may stress the crankshaft less...?

 

[CMF_sarge3uk]

its not neccesary but the bolts are i thought arp had them stock must be british site