Cracked exhaust manifold

[ytt105]

It seems I have a cracked exhust manifold, drivers side. I can't get the heat shield off because the small bolts have been replaced by self tapping screws that are seized and "ungettable", so I'm thinking of cutting it off or some such buchery.
Anyone been there done that. I understand that I should be able to get it MIG welded.

Also, how do I search this forum? I cant get the search to look up more that one word. When I enter exhaust manifold I get all instances of exhaust and all of manifold, NOT exhaust manifold.

[Scouse]

It seems I have a cracked exhust manifold, drivers side. I can't get the heat shield off because the small bolts have been replaced by self tapping screws that are seized and "ungettable", so I'm thinking of cutting it off or some such buchery.
Anyone been there done that. I understand that I should be able to get it MIG welded.

It depends where it's cracked as to whether it's weldable. You'll probably find the little flex section is cracked so you might need to find someone who can replace that.
As the flex section joins the 2 halves, they might need a cylinder head as a jig to make sure the new flex joint fits OK.

[33chinacars]

Something else to think about. You may also need to have manifold planed to make sure its flat

Gary

[PaulP38a]

I had a similar problem with the heat shield being stuck on mine due to a seized bolt, and I did end up cutting it... poorly.

Now I have a Dremel and am itching for an excuse to use it in anger. Come around on the weekend and we can have a play... my Dremel, your heat shield/screws ;)

Cheers, Paul.

[Marshall]

don't stuff around, just buy one... $220
Range Rover Righ Hand Side exhaust manifold and heat shields. ERR5467 | eBay (http://www.ebay.com.au/itm/Range-Rover-Righ-Hand-Side-exhaust-manifold-and-heat-shields-ERR5467-/150668569846?pt=AU_Car_Parts_Accessories&hash=item23148becf6)

[996TURBO]

I had a similar problem with the heat shield being stuck on mine due to a seized bolt, and I did end up cutting it... poorly.

Now I have a Dremel and am itching for an excuse to use it in anger. Come around on the weekend and we can have a play... my Dremel, your heat shield/screws ;)

Cheers, Paul.
Hi Paul,

Did you replace the heat shield with a new one? I do have one rattling since it looses a bolt :(

[Scouse]

don't stuff around, just buy one... $220
Range Rover Righ Hand Side exhaust manifold and heat shields. ERR5467 | eBay (http://www.ebay.com.au/itm/Range-Rover-Righ-Hand-Side-exhaust-manifold-and-heat-shields-ERR5467-/150668569846?pt=AU_Car_Parts_Accessories&hash=item23148becf6)They all seem to crack sooner or later so I don't think I'd risk a 2nd hand one, especially at that price.

I wonder if anyone's gone to the trouble of having regular steel extractors made up?

[ytt105]

Thanks Paul

I might take you up on that offer.

I'll give you a call later in the week

Regards
Trev

[PaulP38a]

Hi Paul,

Did you replace the heat shield with a new one? I do have one rattling since it looses a bolt :(

nope, went from this
http://paulp38a.com/gallery/d/1902-1/RR-Engine-229.jpg

to this
http://paulp38a.com/gallery/d/1904-1/RR-Engine-230.jpg

If it rattles, I can't hear it.

Cheers, Paul.

[Rupert Prior]

petrol p38's have to have heat sheilding of some sort on the manifolds. if they don't have it any close wiring gets fried, the inlet ducting melts and under bonnet temps get even higher. the silver ceramic heat coating seems to work well.

[whisky_mac]

I am still waiting for my exhaust manifold to come from England. We got mine off, had a go at welding it up, put it back on and it just blew again. Tried a second hand one but that was also blown as we found out when we got it off the motor.

Seems to be about that time of life for the P38's as there are none in the country and everyone we contacted had them on back order. So onto the web and order from England, should be here soon. The Queen was meant to bring it over but the "B888H forgot it.

Jim

[DiscoClax]

Probably way too late.... But I do have two full sets of P38A exhaust manifolds, one with heat shields (loose), one without. If anyone is interested make me an offer on one or a set or all.
Hint: I don't expect to get $220 each for them... But feel free if you want to offer that :p

Mind you, new ones are £400 each! :eek:

I'll likely get motivated and list them in Markets sometime soon... maybe... *yawn*

Cheers :)

[whisky_mac]

I am still waiting for my exhaust manifold to come from England. We got mine off, had a go at welding it up, put it back on and it just blew again. Tried a second hand one but that was also blown as we found out when we got it off the motor.
Jim

Managed to get mine cut up and welded again as they we hard to get out of blitty as well.