Knock sensor stud for Zetec

[Ted7]

First off, don't buy a Seven with a Zetec!  Parts are for most of it discontinued and it became a nightmare!  Next time something happens to mine I swap another engine in it!

 

I'm looking for a knock sensor stud (see attach), the original part number is w707046-s309.

Google search gave no  results, only stores saying it's in stock, while it's not.

If anyone knows a replacement/substitute part and have a clue where to get it, I'd be super grateful!

Edited Wednesday at 05:14 AM by Ted7

[MV8]

I don't see anything wrong with the stud shown. It uses a torx socket. A regular socket will not hold. 

If your actual stud is not shown and rounded so a torx socket won't hold, a hardware store metric bolt or stud can replace it.

 

Also not sure why you'd want to loosen the stud. Just turn the nut. If the stud turns with the nut, hold it with a torx socket.

Edited Wednesday at 12:58 PM by MV8

[Ted7]

3 hours ago, MV8 said:

I don't see anything wrong with the stud shown. It uses a torx socket. A regular socket will not hold. 

If your actual stud is not shown and rounded so a torx socket won't hold, a hardware store metric bolt or stud can replace it.

 

Also not sure why you'd want to loosen the stud. Just turn the nut. If the stud turns with the nut, hold it with a torx socket.

 

There's nothing wrong with that one in the picture because it doesn't belong to my car and engine. 

My engine got rebuilt and came back without that stud. The guy who rebuilt my engine told me any stud will do, but so far, none did.

 

[fastg]

Wow that is a crazy stud. I think the local Pick-a-Part visit might be in your future:)

 

It probably looks something like this. (this is not a Ford Part)

 

https://gt4-play.co.uk/shop/knock-sensor-stud-and-nut

 

[11Budlite]

16 minutes ago, Ted7 said:

 

There's nothing wrong with that one in the picture because it doesn't belong to my car and engine. 

My engine got rebuilt and came back without that stud. The guy who rebuilt my engine told me any stud will do, but so far, none did.

 

 

You have to figure out what thread size the stud is. I don't have a Zetec Seven any more but I would think it would be an M8 x 1.25. Any stud that fits in the block should work. 

 

As far as your comment about not buying a Zetec-powered Seven, I would have to disagree with you. Parts are not as easy to obtain in the US as they used to be, but there is still a big supply of parts for Zetec-powered cars in the UK available from Burton, RetroFord, Kent, Piper, etc. The nice thing about the Zetec is it's a 'relatively' easy, more modern design upgrade from the Kent Crossflow that was used in so many Caterhams. The biggest downside to the Zetec compared to the newer Duratec is the heavier iron block, and a less efficient head design that limits power compared to the Duratec. 

[fastg]

I did a little checking, and as long as you don't need the extension to the stud, a regular bolt might work. Checkout this Ford Knock sensor bolt 

 

https://ford.oempartsonline.com/oem-parts/ford-knock-sensor-bolt-w500310s437

 

It also has other names

 

Other Names:Mount Bracket Bolt, Starter Bolt, Tensioner Bolt, Water Pump Bolt, Belt Tensioner Bolt, Belt Cover Bolt, Ignition Knock (Detonation) Sensor Bolt, Belt Tensioner Pulley Bolt, Power Steering Pump Mounting Bolt, Bolt Hex.Head

[Ted7]

34 minutes ago, 11Budlite said:

 

You have to figure out what thread size the stud is. I don't have a Zetec Seven any more but I would think it would be an M8 x 1.25. Any stud that fits in the block should work. 

 

As far as your comment about not buying a Zetec-powered Seven, I would have to disagree with you. Parts are not as easy to obtain in the US as they used to be, but there is still a big supply of parts for Zetec-powered cars in the UK available from Burton, RetroFord, Kent, Piper, etc. The nice thing about the Zetec is it's a 'relatively' easy, more modern design upgrade from the Kent Crossflow that was used in so many Caterhams. The biggest downside to the Zetec compared to the newer Duratec is the heavier iron block, and a less efficient head design that limits power compared to the Duratec. 

 

Thanks, I'll remove the one from the other Seven we have and hunt for something similar.

Yeah I know about the Zetec weight, mine is the SVT variant so I guess it helps vs. the regular Zetec.

Still, a lot of parts for this engine are not available any longer. And that's a shame.

[dallasdude]

It is stepped stud..... two diameters if no one mentioned.   We are racing this weekend but I think I have some in my shop.  I'll check.   Quicksilver probably has a bin of them they removed somewhere.

 

@11Budlite is correct.  All others things being equal, my understanding is a Duratec is 35 pounds lighter and makes 35HP more, but Zetecs are pretty tough, and overall cheaper to build.  Between the Caterhams and an Elan S2 conversion, I'm pretty well married to them.  The SVTs use a different cam follower and they are even harder to find, but most other stuff you can get in the US or UK, but yes it's not as easy.  SVT heads flow more for sure.  I have a NOS for racing head the Lotus is going to get.