Toyota Primaries

[Lurkin]

was swapping my silvertop extractors for a set of blacktop ones last night..

the three 'bolt's that hold them on are weirding me out? they have (i think) torx heads that screw into the primaries, then have nuts that go over them to hold on the 2 -1 pipe?

any ideas of the purpose of this? why not just use hex bolts like everything else?

[gasman]

i think yhat you might find that its a 12 sided head so you can use the 12 sided socket for extra torque since those bolts are generaly quite hard to get off.

[nz_climber]

its just a normal stud and nut situation, the star/torx section on the end of the stud is so you can install and remove them a bit easier..

[Lurkin]

Actually its abit more than that - figured this out through trial and error tonight..

Testing 14mm bolts (toyota) with a new set of extractors proved to be a bad idea.. 2/3 snapped on the undo stage...

therefore perhaps the torx head/ stud + nut is better/ less likely to snap?

either way its gutting to figure it out the hard way!

[85AW20v]

Can you confirm that the flange pattern from ST to BT is the same so no need to change anything further?

[thegreatestben]

Same part number for exhaust manifold gasket

[Lurkin]

Bolts up fine

I used the same metal gasket (ST) as the BT extractors did not come with a gasket (guy posted them to me without one) - therefore had nothing to compare it too....

But nothing needed alteration - just bolted them on in the same place Easy!