I bought my car off a mechanic who owned and babied the car for a number of years. He put on a 1.2 mhg, apr bolts, and had the head resurfaced. I'm looking to do the whole Lexus afm mod and eventually max the car out at 300-350 hp. What cautionary steps should I take, if any to make sure the mhg was done right? Should I re-torque the headbolts? Any special tips or steps to re-checking the torque besides the TSRM's 3 passes? Or are there any easier ways to make sure it is problem free? Thanks -
Should I re-check MHG bolts?
- Thread starter 89MkIII
- Start date
as long as the job was done right you shouldnt have a problem. And by the way you describe the previous owner it sounds like it was done right. I would say in this case: If it aint broke - dont fix it. 300-350 hp is not that much stress for the 7m anyway so I wouldnt think you would have a problem with the head gasket. spend time elsewhere.
I think you should check them just because it is easy and will give you peace of mind. While you check them, make sure you check in the correct bolt order. Also, I would replace the throttle body and ISC gaskets and possible the valve cover gaskets. Another thing you could do is to check valve clearences.
When I put mine in, I called ARP and talked to one of their tech guys. He said to torque them to 75 ft-lbs initially, and you don't need to retorque.