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Cosworth inlet plenum cover bolt size ?

Old 26-02-2012, 05:15 PM
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Default Cosworth inlet plenum cover bolt size ?

As title , cheers.
Old 26-02-2012, 05:34 PM
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daz1968
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Pretty sure they are m6 dia but can't help with length as all fitted on car.
Old 26-02-2012, 05:35 PM
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Thanks mate,it's a start lol.
Old 16-09-2012, 05:23 PM
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Bump for Kev, as i wanna know aswell

Does anyone do replacements? Stainless etc
Old 16-09-2012, 05:38 PM
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Obviously the length will depend on if you have a spacer too?
Old 16-09-2012, 06:44 PM
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I haven't got a spacer. Just need to be like the OE Ford items but stainless (shiney )
Old 18-09-2012, 05:19 PM
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Kev - Sorted it.


There are 10 bolts holding the plenum cover one. They are M6 thread.

4 are M6 x 40mm
2 are M6 x 50mm
2 are M6 x 60mm


Remember to add more length if you've got an inlet spacer

Last edited by Smit; 18-09-2012 at 05:20 PM.
Old 18-09-2012, 05:37 PM
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Originally Posted by Smit
Kev - Sorted it.


There are 10 bolts holding the plenum cover one. They are M6 thread.

4 are M6 x 40mm
2 are M6 x 50mm
2 are M6 x 60mm


Remember to add more length if you've got an inlet spacer
that adds upto 8 where is the other 2
Old 18-09-2012, 05:41 PM
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My bad, there is 6 x 40mm
Old 18-09-2012, 07:10 PM
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Nice one Mark
Old 18-09-2012, 07:36 PM
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Originally Posted by Smit
Kev - Sorted it.


There are 10 bolts holding the plenum cover one. They are M6 thread.

4 are M6 x 40mm
2 are M6 x 50mm
2 are M6 x 60mm


Remember to add more length if you've got an inlet spacer
So are these for 2wd or 4wd?
Old 18-09-2012, 07:41 PM
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So if your looking at the plenum cover and the 10 holes it goes

40 40 50 40 40
40 50 60 60 40



Edit - This is a 4x4 inlet. No idea if it's the same for 2wd.
Old 18-09-2012, 07:47 PM
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Originally Posted by Smit
So if your looking at the plenum cover and the 10 holes it goes

40 40 50 40 40
40 50 60 60 40



Edit - This is a 4x4 inlet. No idea if it's the same for 2wd.
Ok. I just wanted to make sure.

RS500 below:

70 60 70 60 35
35 70 70 70 60
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