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Boost pipe size questions #272052 08/01/2007 18:40 08/01/2007 18:40
Joined: Dec 2005 Posts: 928 Wimbledon paddy OP Enjoying the ride
paddy OP Enjoying the ride Joined: Dec 2005 Posts: 928 Wimbledon	Just pondering induction pipes (on the boost side) pros and cons. I believe the standard 20VT turbo compressor exit is 2.5”. The way my FMIC is setup, it then goes straight up to a 3” converter, and then to another pipe and onto the intercooler. Is there any advantage to this, or is it best to have induction piping that is the same bore all the way through? thanks

Re: Boost pipe size questions #272053 08/01/2007 19:55 08/01/2007 19:55
Joined: Dec 2005 Posts: 12,321 Sandhurst Begbie ex El Presidente
Begbie ex El Presidente I AM a Coop Joined: Dec 2005 Posts: 12,321 Sandhurst	I would say it is probably best to have the same all the way through, as the air still has to be forced through the throttle body which has a smaller diameter than the intercooler pipe work Originally Posted by Jonny - After being taken out at Spa Your car is Usain Bolt with wellies

Re: Boost pipe size questions #272054 08/01/2007 22:02 08/01/2007 22:02
A Anonymous Unregistered
Anonymous Unregistered A	The standard turbo compressor exit size is 51mm. You can buy SAMCO 60 to 51mm reducing elbows easily for about £20. Chris

Re: Boost pipe size questions #272055 09/01/2007 03:44 09/01/2007 03:44
Joined: Dec 2005 Posts: 928 Wimbledon paddy OP Enjoying the ride
paddy OP Enjoying the ride Joined: Dec 2005 Posts: 928 Wimbledon	Cheers for your help

Re: Boost pipe size questions #272056 09/01/2007 04:06 09/01/2007 04:06
Joined: Dec 2005 Posts: 9,707 Gone J Jimbo Je suis un Coupé
Jimbo Je suis un Coupé J Joined: Dec 2005 Posts: 9,707 Gone	The pipe work on the 20vt gets smaller all the way through, it starts off at 76mm at the air filter and reduces down to about 50mm at the throttle. Maybe fiat did this for a reason, as the pipe reduces in size the velocity of air will increse as in the venturi effect ?