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alexatnd



Member Since: 19 May 2015
Location: Yorkshire
Posts: 264
United Kingdom 
Extended exhaust studs
Hi,
ok installing new head on my td5 . Thought I'd go for some extended exhaust studs so ....

Wurth studs and copper nuts - ~£29 ex vat (ebay is your friend)

Allisport extended studs, nuts and expansion spacers ... ~£89 inc vat

So £60 ish for some spacers ....
Do i really need spacers? Must be somewhere else I can get them ... or i clould get some. piping anc cut make some spacers i guess
A Santa - 1977 Series 3 - new chassis, tub, disc brakes,SU Carb
Gertie - 1999 110 TD5 - like a Phoenix from the ashes back on road... almost
Effie - 2004 110 TD5 County
Post #1047577 3rd Oct 2024 3:38pm
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landy andy



Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5614
2006 Defender 110 Td5 USW Zermatt Silver
Do you understand what the spacers do?
Post #1047580 3rd Oct 2024 3:59pm
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TexasRover



Member Since: 24 Nov 2022
Location: Paris
Posts: 995
France 2002 Defender 110 Td5 DCPU Chawton White
I am guessing the longer studs and spacers make for a longer bolt part to stretch giving you a little bit more elongation (stretch) lenght and therefor less likely for stresses to reach fatique/snap point.

On my Td5 I had two bolts that had ripped out of the head, I put in an insert but that was not very convincing. I had my exhaust manifold skimmed and refitted. So far I think there might be small leak still which I will fix with a new head one day.

I am thinking removing and skimming your (seasoned) manifold is probably more effective then some fancy bolt setup.
Post #1047652 4th Oct 2024 7:38am
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landy andy



Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5614
2006 Defender 110 Td5 USW Zermatt Silver
I’ve increased the stud size of the four outmost studs, so they are now much stronger, and all studs are Wurth items. Removed all webbing and had it skimmed. Must be 6 years ago now.
Post #1047654 4th Oct 2024 8:04am
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bankz5152



Member Since: 02 Feb 2017
Location: South London/North Kent
Posts: 2140
2004 Defender 110 Td5 DCPU Epsom Green
Shockingly you cant actually get the spacers any cheaper, if you want them from stainless. Unless you make them yourself

Be careful with the Wurth sets as some are legit some arnt. Some that are sold only have about 8mm thread into the head where as the proper ones have about 15mm or so.

Funnily enough fitting the set from Gigglepin tomorrow as the best value for me and includes all gaskets. Instagram @defender_ventures
Empire Tuning - Agent
Post #1047655 4th Oct 2024 8:17am
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TexasRover



Member Since: 24 Nov 2022
Location: Paris
Posts: 995
France 2002 Defender 110 Td5 DCPU Chawton White
landy andy wrote:
I’ve increased the stud size of the four outmost studs, so they are now much stronger, and all studs are Wurth items. Removed all webbing and had it skimmed. Must be 6 years ago now.


You increased the diameter?
Post #1047661 4th Oct 2024 10:17am
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landy andy



Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5614
2006 Defender 110 Td5 USW Zermatt Silver
Yes. You are potentially going to have to drill bigger for a thread insert so rather than a thread insert I just went up in stud size. Increasing slightly the holes in the manifold which are oversize anyway.
Post #1047665 4th Oct 2024 11:52am
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bankz5152



Member Since: 02 Feb 2017
Location: South London/North Kent
Posts: 2140
2004 Defender 110 Td5 DCPU Epsom Green
TexasRover wrote:
landy andy wrote:
I’ve increased the stud size of the four outmost studs, so they are now much stronger, and all studs are Wurth items. Removed all webbing and had it skimmed. Must be 6 years ago now.


You increased the diameter?


Yeah very common to drill and tap to M10 when the threads strip. Instagram @defender_ventures
Empire Tuning - Agent
Post #1047672 4th Oct 2024 1:19pm
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TexasRover



Member Since: 24 Nov 2022
Location: Paris
Posts: 995
France 2002 Defender 110 Td5 DCPU Chawton White
Yeah should have done that M10... mhh was going to pull the engine this winter and will look into it. Thanks
Post #1047679 4th Oct 2024 3:48pm
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