Milltek Exhaust Query
I'm just putting a few idea's together to take my MY05 uk sti up small stage and could do with some guidence regarding the exhaust.
What is the diameter of a Milltek system is my main question and will a 3" open neck decat down pipe marry up to it ok ? I'm on a new age learning curve here, I know where I am with the generalised parts but it's the finer points that I have to re learn :lol1: Thanks Simon :) |
You can get the Miltek in 2.5" and 3" mate. I have a full 3" turbo back sports catted Miltek system and apart from being fairly quiet it is a very good system. I am running 340bhp with it on :thumb:
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Originally Posted by martin850
(Post 10419550)
You can get the Miltek in 2.5" and 3" mate. I have a full 3" turbo back sports catted Miltek system and apart from being fairly quiet it is a very good system. I am running 340bhp with it on :thumb:
Martin you may not have fully answered the question but you certainly jogged my memory ! :freak3: :thumb: |
Ok I have some paperwork it does not state a diameter but I do have some part numbers... I hope someone out there is good with part numbers...
It's hand written but read as follows and was fitted mid 2009 MSSUB116 & MSSUB114 Simon :thumb: |
I do have my receipt at home for mine from the previous owner but I'm in Florida at the moment. The parts numbers do look familiar though so it may be 3"
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Thanks Martin, now I have the numbers I'll give the supplier of the exhaust a call and see if they can back track on the paperwork.
Enjoy the rest of your holiday there bud :D |
Thanks pal, when I get back I will have a look if you have no luck :)
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The standard dia for the STi is 2.75" If you want the 3" you'll have to specify the Spec C system. You can get the single scroll resonated downpipe to suit but you will have to be absolutely sure that if you already have an existing d/pipe, that it will match up for length. The Milltek is a system in it's own right.
JohnD |
The standard STI downpipe CAT, will be restrictive for the gas flow, especially with your miltek system. Why didn't the last owner just put in a high flow sports cat.
What power are you running with this current exhaust setup. Sorry to say, but its a bit of a mish mash. |
Originally Posted by JohnD
(Post 10420661)
The standard dia for the STi is 2.75" If you want the 3" you'll have to specify the Spec C system. You can get the single scroll resonated downpipe to suit but you will have to be absolutely sure that if you already have an existing d/pipe, that it will match up for length. The Milltek is a system in it's own right.
JohnD I have found that Milltek sell a de cat down pipe which replaces the first 2 section both with cats in, this is a 3" open neck that fits to the 2.75" centre and rear.
Originally Posted by zayd
(Post 10420691)
The standard STI downpipe CAT, will be restrictive for the gas flow, especially with your miltek system. Why didn't the last owner just put in a high flow sports cat.
What power are you running with this current exhaust setup. Sorry to say, but its a bit of a mish mash.
Originally Posted by martin850
(Post 10420548)
Thanks pal, when I get back I will have a look if you have no luck :)
It's worked out a lot cheaper than I initially thought to re work the exhaust :) |
Measure any sections you're not sure about by wrapping a tape measure round it to get the circumference, C. Then determine the internal diameter, d, by:-
d = C divided by 3.14. Then subtract about 8-10mm (the thickness of the walls: c.4-5mm x 2). But you might have reduced OEM-sized 2.625" mating flanges - despite a bore of 3". |
Silver Scooby Sport, I'm having difficulty reading your posts, as your avatar is rather scary!
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Originally Posted by joz8968
(Post 10421612)
Measure any sections you're not sure about by wrapping a tape measure round it to get the circumference, C. Then determine the internal diameter, d, by:-
d = C divided by 3.14. Then subtract about 8-10mm (the thickness of the walls: c.4-5mm x 2). But you might have reduced OEM-sized 2.625" mating flanges - despite a bore of 3".
Originally Posted by zayd
(Post 10421929)
Silver Scooby Sport, I'm having difficulty reading your posts, as your avatar is rather scary!
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