Exhaust Manifold Gasket... Really an engine out job?

[EGB]

zacherynuk said:

SILICONEKID350HP said:

I learned the hard way ! took mine off three times thinking the gaskets were leaking In the end i took V8D`s advice and filled manifolds with water ,guess what they both leaked on the welds where the four meets one .

So that was a waste of blood sweat and tears

ooooh! I wonder if that's something I could spot with an IR camera...

Can also be heared blowing with a medical stethoscope with a tube attachement.

[zacherynuk]

EGB said:

Can also be heared blowing with a medical stethoscope with a tube attachement.

[QBee]

Don't laugh, but you could possibly adapt one from a kids' doctors and nurses kit. You just need the far end to be small and pointy so tat you can direct it accurately.

[brett84]

while mine were off I cut the lower holes into slots so it was LOADS easier putting them back on. Get the stud kit, fit the lower ones then slot the manifolds into place

[daveparry]

I was about to suggest this too, very good idea, also if you can get hold of some a gas fitters smoke pellet?match can help in pinpointing exhaust leaks.

brett84 said:

while mine were off I cut the lower holes into slots so it was LOADS easier putting them back on. Get the stud kit, fit the lower ones then slot the manifolds into place

[s p a c e m a n]

Bumpy..

When Halfords open I'm off to get some copper slip and do my offside ones, does anyone put some sealant on the gaskets or do you do them dry? I'm planning on changing a habit of a lifetime and do something once and correctly

[carsy]

I always fit them dry. and yes plenty of copper slip on those bolts.

[EGB]

carsy said:

I always fit them dry. and yes plenty of copper slip on those bolts.

I wonder about copper grease + steel bolts + aluminium. Room for galvanic corrosion? Useful for taking the squeak out of the back of break pads. On boat hulls it's always copper with copper nails, never with steel nails. Have used standard new bolts on mine with some oil. It worked for TVR, it works for me. What does the expert jury think? An electro chemist should know.
Metal conpatibility chart says dont mix aluminium with copper!

Edited by EGB on Sunday 19th May 21:55

[jojackson4]

Graphite greese?
Copper slip sets when hot

[s p a c e m a n]

Well I bought some copper slip and it said something like 900 degrees+ on the tube, I know these under bonnet temps can be a bit high but I think it should be ok

[chris1972]

I used Duralac.

[s p a c e m a n]

(Just come in for a tea break)

Seriously, what fking idiot designed this? And the bd who did it last time didn't put a washer on the top back one and rounded the nut. 2 fking hours and I still haven't got it off, one last nut and I needed a 13mm to undo it from the aircon pump.

[chris1972]

s p a c e m a n said:

(Just come in for a tea break)

Seriously, what fking idiot designed this? And the bd who did it last time didn't put a washer on the top back one and rounded the nut. 2 fking hours and I still haven't got it off, one last nut and I needed a 13mm to undo it from the aircon pump.

Ahhh... the joys of the exhaust manifold, I was there recently. Seriously, cut slots in the bottom bolt holes of the manifolds. It makes removal and refitting much easier!

[pwd95]

Paid my local mechanic to do mine recently. They'll need nipping up after a few heat cycles.

[s p a c e m a n]

Stop the clock. That was about 6 hours, with a half hour ranting break and 20 mins of failing to split the y piece. My frirst mistake was looking at it on friday and thinking that it didnt look too tight.

[chris1972]

Yep, it gave me the same feeling when I eventually got mine back on!