Stubborn Bolts Help

[Thomas77GR]

Hi

any tips on how to loosen the 4 torx (star shaped) bolts that hold the intake manifold onto the exhaust manifold? I've soaked it in wd40 and used brute force but they won't budge.. time for blow torch?

[StevieH]

Yup heats the way to go

[Atlantean]

Get some penetrating oil on them — something like PlusGas — WD40 is about as much use as an ashtray on a motorbike when it comes to penetrating bolts!

[Mototechnics]

Yep heat is the way to go. FYI I find GT85 much better than WD40.

Mark

[manta3000]

plus-gas+heat,just watch the eye-brows

[rayman]

Good sharp smack on top with a hammer to loosen them usually works

[mantasrme]

Make sure the inside of the bolt heads are clean so the torx bit goes in fully, also clean around the edge of the head so the penetrating fluid can get in.

Give it a good squirt of oil, I use Duck Oil for a penetrating fluid about the best i've found.

Then a sharp smack straight on the top and even a couple onto the side of the manifold where the bolt threads are.

Its amazing what a good whack with a decent hammer can do to jar free stubborn bolts

[Julian]

Make sure the inside of the bolt heads are clean so the torx bit goes in fully, also clean around the edge of the head so the penetrating fluid can get in.

Give it a good squirt of oil, I use Duck Oil for a penetrating fluid about the best i've found.

Then a sharp smack straight on the top and even a couple onto the side of the manifold where the bolt threads are.

Its amazing what a good whack with a decent hammer can do to jar free stubborn bolts

This is the first time that I have seen Duck Oil mentioned for a long time, I have never found anything better as a penetrating fluid, not in fifty years.

Edited October 10, 2011 by Julian