falcon9094

Anybody have the torque specs for the header bolts? I want to make sure when I put mine on there is no leaks.
Thanks Justin

chronic

thats a good question~!~~

falcon9094

anybody?

ScionDad

This is all I came up with from someone installing DC header

<snip>
Since I did not have a torque wrench, I tightened the bolts to the point where I thought, "Yeah, it's tight." I've talked to a few mechanics and they do the same. But if you would like to tighten them to spec, the header bolts/nuts are 20 ft. lbs.

Once the header bolts/nuts are tightened, grab your socket wrench with 14mm socket and the spring-loaded 14mm bolts, then shimmy yourself back under the car. Bolt the spring-loaded bolts back onto the b-pipe and header. The bolts will actually stop turning, so listen to the "Jack-in-the-Box" music until they stop. Again, tighten until "it's tight." The torque spec for the spring loaded bolts are 32 ft. lbs.
<end snip>

f1nch

yea i have to get mine torqued again soon... after 500 miles you are supposed to haver them re-tightened..

dgHotLava

moved...

falcon9094

thanks now I can install mine without worrying, and where did you get the numbers out of curiosity

ScionDad

searched it here on ScionLife. Located it in the how to section regarding DC Header install

SCIONPARTS

exhaust manifold converter to cylinder head 44(N-m) 377(kgf-cm)
27 (ft-lbf)

ScionDad

See, thats the problem...mis-information. Sorry for passing that. Figured someone would have called that before now on the old post.

Guess I need to add about 7 more pounds of torque....It's been a few 100 miles now. Can you do a sticky for all the torque specs for commonly modded parts?

mikochu

I concur with the 27 ft-lbf...

The 20 ft-lbf of torque you read about for the DC header install was for the xA/xB...