08-17-2010, 07:22 PM #1
riva head studs..and oem gasket..torque specs?
installed a set of the riva /arp head studs with a oem gasket a little back..torqued them to 85 ft lbs...had the head serviced a shaved..so it was true...not sure i have a problem...but coolant is going somewhere...may be a leaking fitting havent had a chance to look yet..
but i think oceman did a couple of times..and not sure but we think psychorxp jason may as well... we all have the same set up...
just wondering if anyone else has had the same problem or they should be torqued higher than that...
going to be a little frustrated if i have a blown head gasket after ony 10 -15 hours...trying to do it right so it lasts...
08-17-2010, 07:32 PM #2
To be honest I think before I switched to open loop I lost some two with studs and a riva gasket torqued to 85. The head bolt pattern is not friendly with very high boost. Chad, ibadtons ski is doing the same thing with his 68/140. He has just been filling his overflow back up.
08-17-2010, 07:56 PM #3
I hear some guys torque to 90-95ft/lbs.
08-17-2010, 08:09 PM #4
You install the new IC yet?
08-17-2010, 08:19 PM #5
Ya , Mine is leaking out the overflow tube and into the hull on WOT passes. Still runs great, but now throwing my AFR's all over the place as well. I torqued to final @ 85ft/lbs, and even re-torqued after a heat cycle or 2.
Got a new gasket on the way this week, will have to try 90-95lbs this time I guess.
08-17-2010, 08:22 PM #6
When you say your AFR are all over WOT can you elaborate?
08-17-2010, 08:31 PM #7
My AFR is now reading 7.4-8.9 all the time, which can't be right. I even recalibrated it 2 times to open air. Maybe the coolant in the exhaust, from the gasket leaking, took out my O2 sensor, or made it read really rich.??
08-17-2010, 08:36 PM #8
the higher torque setting is what i was maybe thinking..as jason said....they hold withthe stock set up....
08-17-2010, 08:40 PM #9
08-17-2010, 08:55 PM #10
no i think the af is another issue..
i am talking about the head gaskets not blowing...with stock streach bolts...and gaskets...
i am starting to think 85 isnt enough torque..
i am hoping to get to my intercooler prodject the first part of next week..after in get this 944 done and delivered..i have a few things i need to do to it..
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