T123VOR

iTrader: (2)

The decat-up pipe I have bought to put on tomorrow hasn't got a 'flexi' section? doing a little look around the net - some have/ some havent??

The one I have bought is the one power engineering supply - i got it S/H

Assuming I have bought the right pipe do I need to go 'flexi'?

Bit worried now!

its a WRX MY05 PPP.

Trevor

harvey

iTrader: (48)

The O/E up-pipe has a flexi joint. After market replacements may have no joint and be solid in construction, have a slip joint or have some form of flexi.
The purpose of the flexi or slip joint is to reduce tension on the header/up-pipe assembly which can be prone to blown gaskets, especially on a solid pipe set up. This is because of thermal expansion and contraction and the pressures involved.

T123VOR

iTrader: (2)

Cheers Harvey

How much of a risk is no flexibility?

Am I better of buying a flexi-pipe?

How long should the fitment of an up-pipe to a newage take roughly?



Trevor

harvey

iTrader: (48)

A lot depends on how it is fitted but there is a bigger risk of blowing a gasket if there id no flexi or slip joint. I accept on one of my own cars that a solid up-pipe will result in the odd gasket change and flattening of the flange. I have also made spacers to reduce the possibility but it still happens and that is a topic on its own.

If you blow the up-pipe gasket, then swap to a slip or flexi.

Check with a dealer on the book time figure but I think it is 2 hrs to change headers and up-pipe. If you are doing it regularly and have the right facilities then 2 hrs is realistic.

RB5_245

Mine is solid and has been a nightmare to get it to seal, but has been good for the last 1500miles or so.