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DISCUSSION => Swaps, Turbos, Buildups => Topic started by: bar73k on February 22, 2008, 10:35:18 AM

Title: stock conrods boost levels?
Post by: bar73k on February 22, 2008, 10:35:18 AM

anybody out there who has pushed stock conrods in an m42 to breaking point?

im running 22psi and i have stock rods, im planning on pushing that upto 25psi

but im starting to worry about the rods....

i have been told they should handle 20psi, well i know for a fact they do, but how far can i keep pushing?

Title: stock conrods boost levels?
Post by: rob_e30 on February 22, 2008, 12:25:51 PM

We've been as high as 27 but I'm not sure I'd recommend it.

Title: stock conrods boost levels?
Post by: beegeezy on February 22, 2008, 08:06:51 PM

More info on your setup?!

Title: stock conrods boost levels?
Post by: stereomotional on February 23, 2008, 01:40:03 PM

they are cast correct?  i personally wouldnt go over 15-18psi especially on stock CR (i hope you lowered it).

Title: stock conrods boost levels?
Post by: beegeezy on February 23, 2008, 09:06:04 PM

I thought the rods are forged on m42s, the pistons are cast iirc.

Title: stock conrods boost levels?
Post by: rob_e30 on February 24, 2008, 09:03:47 PM

Quote from: beegeezy;43377

More info on your setup?!

If you mean me, here is a link...

http://www.r3vlimited.com/board/showthread.php?t=96456

Title: stock conrods boost levels?
Post by: bar73k on February 26, 2008, 04:56:51 AM

i have lowered the compression to 8.0:1 with forged pistons...

ill dial her up to 25psi, we'll see how she holds up i guess

Title: stock conrods boost levels?
Post by: nuvolarossa on February 26, 2008, 05:34:16 AM

Quote from: bar73k;43614

i have lowered the compression to 8.0:1 with forged pistons...
 
ill dial her up to 25psi, we'll see how she holds up i guess

So you'll have stock rods with forged pistons at 25psi? What headgasket you have now?

Title: stock conrods boost levels?
Post by: beegeezy on February 26, 2008, 09:57:11 PM

any idea on power output at that psi? And your car is noice rob :D

Title: stock conrods boost levels?
Post by: bar73k on February 27, 2008, 01:58:42 AM

Quote from: nuvolarossa;43617

So you'll have stock rods with forged pistons at 25psi? What headgasket you have now?

heatgasket = cometic stainless steel

Title: stock conrods boost levels?
Post by: vatos_p on March 17, 2008, 01:52:08 AM

please give us some more info on pistons ( diameter and stuff ) and more info on gasket ( thickness )

i am planning to go to cometic gasket for pressure drop ( stock internals ) 9:1 so i can go to 0,8 - 0,9 bar press...so some more info would be good...

Title: stock conrods boost levels?
Post by: bar73k on March 24, 2008, 03:08:20 AM

the head gasket i believe i standard thickness, to be honest in not sure

and the pistons are custom made JE Pistons 8.0:1 comp