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Cosworth throttle diameters? pics inside

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Old 20-02-2007, 10:57 AM
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Dunc Maclean
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Default Cosworth throttle diameters? pics inside

can anyone tell me the diameter of the cosworth throttle? are 2wd and 4wd different?

im after the internal diameter......


and the over all diameter....



can some one help me please, as its for a project, cheers.



Dunc
Old 20-02-2007, 05:40 PM
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Dunc Maclean
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anyone?

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Old 21-02-2007, 07:12 AM
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Dunc Maclean
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anyone at all

pleeeeeeeeeeeeeeeeeeeeeeeese

Dunc
Old 21-02-2007, 10:54 AM
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2001ode
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Hi,

Internal diameter is 55 mm.
2wd and 4 wd are same.
Only RS500 is different.

Regards

Claude
Old 21-02-2007, 08:07 PM
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tabetha
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Bugger got mine off at mo(headgasket) should have measured it for you.
Will do so in morning just to make sure, as said I am sure they are the same as well.
tabetha
Old 22-02-2007, 09:20 AM
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Dunc Maclean
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ahh thanks for the replys

cheers 2001ode

tabetha, that would be great, cheers

Dunc
Old 22-02-2007, 09:21 AM
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Dunc Maclean
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also, how much bigger is the RS500 one?

Dunc

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Old 22-02-2007, 10:11 AM
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J9BBY
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I seem to remember reading somewhere that a BMW 535 throttle body is a straight swap for a cossie and that it is the same internal diameter as the RS500. Not answering your question there Could just be bollocks though ?




Pete.
Old 22-02-2007, 10:45 AM
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Dunc Maclean
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Originally Posted by J9BBY
I seem to remember reading somewhere that a BMW 535 throttle body is a straight swap for a cossie and that it is the same internal diameter as the RS500. Not answering your question there Could just be bollocks though ?




Pete.
ahh never thought of a bmw one.

well, to tell u the truth its not for a cossie, its for my uno turbo. im having to get a spare plenum and do some home mods which involve cutting off the standard throttle and getting handy with a welder and making another one fit with a much larger diameter.

im looking for something around the 2.5 - 3" area, and just wondered what the cosworth one was as its pretty readily available.

the standard uno one is far too restrictive for mt engine spec and Boost im running, its just holding the whole engine back, so drastic measures have to be done!

any more help would be really appriciated, cheers

Dunc
Old 22-02-2007, 05:51 PM
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tabetha
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I have just walked aropun to my garage and checked(10 mile walk, ok 300 yards), anyway the inside diametre(engine side) is about 55mm did not have my digi vernier working as battery dead.
Throttle plate itself is lightly smaller so I would say it is around 50mm at this point which is the smallest point in housing.
Hope this helps, the plate is defo smaller than the 55mm inner size, best guess 50mm.
tabetha
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