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It comes down to what you want and what you are prepared to pay for. To the average person 3" probably would not make a difference they would be prepared to pay for. For someone who tinkers with their fuel pump and performs other mods to try to improve performance then I think the 3" is the way.Quote:
Originally Posted by 110 Pete
Without any empirical testing I'd suggest a 2.75" pipe would be 'ideal' but 3" works well without any potential problems (so far that I'm aware of) in probably a combined several million km's of use from all of us that have had one made/made one.
Well after reading lots and lots and lots of various sites and threads i think I may have come to a conclusion! Maybe if I had a 4.2L pootrol I'd go a 3" but on the defender with the outlet on the turbo/exhaust that is an extra .5" either side!! :eek:
My decision is leaning towards 2.5" or 2.75" from the turbo, with a hotdog in place of the centre muffler and a straight through Resonator on the rear maybe with a 3" tip:wasntme:.
What do you guys think :)
Pete
What is the tip going to do?
Your tolerance to noise will tell how good your hot dog resonator selection will be.
Have you thought about a 3" dump pipe into a 2 1/2 or 2 3/4. The most important part of a performance exhaust system is the first 3 feet.
The tip will be there for no purpose but to look cool and make it look like a big exhaust:wasntme: but no real purpose haha!Quote:
Originally Posted by slug_burner
Err, the dump damned near matches a 2.5" pipe (and does with a little massaging from a die grinder)Quote:
Originally Posted by 110 Pete
It's no where near as small as 2".
A nice 2.5" to 3" transition is relatively easy.
I just turned a swaging/flaring die up out of some bar and swaged up some 2.5" pipe to 3" for the transition.
Yeah the dump pipe is 2.25" same as the outlet on the turbo. So Rick you think a 3" dump pipe dropping down to 2.5" or 2.75" at the hotdog??Quote:
Originally Posted by rick130
What would your preference on my set up be?:)
Cheers
Pete :)
IIRC the cast dump on the turbo is 60mm so I opened mine up to 2.5" to match a 2.5"-3" tansition I made (15* taper for reasonable flow) and ran 3" all the way.
Just make sure you use a good size muffler and a resonator at the back.
My main muffler is undersized and it's tiring on a trip.
Cruising @ 100/110km/h isn't so bad, but the noise as you open the throttle for any sort of incline or hill climb or taking off from a stop......:angel:
Can you post some photos of you exhaust with some captions??:)Quote:
Originally Posted by rick130
Cheers