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View Full Version : 1800 Miata Header tube size?


bobc_5
02-09-2008, 12:24 PM
Hi,

Does anyone know the o.d. of the tubes used for the 1800 Miata stock header?

Thank you in advance for any help.

Bob
rhygin
02-09-2008, 07:40 PM
the dead stock one? LMk... I can measure tomorrow.
BB
bobc_5
02-11-2008, 08:15 PM
Yes. straight from the factory.

Thank You

Bob
bobc_5
02-13-2008, 01:34 PM
sorry to be a pest. does anyone have access to this information.

thank you in advance.

bob
rhygin
02-14-2008, 07:33 PM
on the #4 header tube... my best "reasonable" circumference measurement is 125mm.... to save you the math... the OD is 40mm