Head gasket Replace - Please Help

[kodurb25det]

im gonna put a OEM head gasket and ARP stud on my GTST. car is allmost stock. it got 3 inch turbo back exhaust, SARBER intercooler, and K&N pod filter.

i had a oil leak from bck of the head. thats the reson for change the gasket. but the car was run really good. no smoke nothing. i did a compression test with T&E compression tool.results was

115:110:120:120:125:120

you guys recon i need a metal gasket...?how much boost u guys think with this set up...? [safe level]any body did this set up, pls let me know the toque specs for ARP studs...? or is it same as the nissan specs for RB25det..?

thanks

[240z4u]

Don't use a metal gasket.

Your sure its the head leaking? And not the backs of the valve covers?

ARP provides torque specs, follow them very closely. It is NOT the same as OEM torque specs.

Boost numbers are aribtrary. It is like saying my speakers blew up when I turned my stereo to 9. Run a safe and reasonable tune and it will be fine at almost any power level IMHO.

[kodurb25det]

thanks 4 that.mate, do u know the ARP torque specs for RB25..? coz i cannot find it. thanks

[mott6904]

It didnt come in the box. I thought the specs were on a paper card or on the back of the box(i cant remember)

[speedeast]

http://nico.zeroforum.com/zero...-rb20

remember that you still have to torque them in the OEM order to OEM spec, then final torque to the ARP standard. I believe it is 85-110lbs.

[kodurb25det]

have you done this b4..?. if so pls update me with more details

one more thing,according to nssan specs final torque s/b 95-100 degrees [4 oem bolts].in this case need to use angle gauge aswell. u recon same thing 4 the ARP studs as well. im bit confuse abt this.

thx
Modified by kodurb25det at 11:02 PM 1/2/2010

[Darius]

You do not torque to oem specs and then to arp specs. Use the proper specs for the fasteners being installed. Torque in the proper order.

And the compression numbers look okay. Are you sure it isn't leaking from the valve covers like 240z4u said?

[kodurb25det]

You do not torque to oem specs and then to arp specs. Use the proper specs for the fasteners being installed. Torque in the proper order.

And the compression numbers look okay. Are you sure it isn't leaking from the valve covers like 240z4u said?

i had a good look. it was from the head gasket. i replace the half moon seals and rocker cover gaskets as well. i can show u where it was from i already pull off the head. but i dont know how to att the photos. coz im new to this forums.

any way do u know the specs and order for the proper torque. coz ARP said only final torque. they say 80 lbf with ARP lube.

thx

[kodurb25det]

have you done this b4..?. if so pls update me with more details

one more thing,according to nssan specs final torque s/b 95-100 degrees [4 oem bolts].in this case need to use angle gauge aswell. u recon same thing 4 the ARP studs as well. im bit confuse abt this.

thx

Modified by kodurb25det at 11:02 PM 1/2/2010

u

u quite right mate. thats what ARP said. final torque s/b 80 lbf with ARP lube

[Darius]

Always tighten from the middle outwards. Think of it like speading out a table cloth. Start from the center and smooth towards the outsides. If you don't know the tightening order, you need to get ahold of the FSM.

And from personal experience, I'd go a little tighter than ARP's torque spec on the head studs.