Project Thread How does your downpipe run

[Boostage]

I have been looking at pics of the underside of sc's and GS's and I cant see HOW you can fit a downpipe (or two) under there.

if someone does something like this..



how is there room for the downpipe to mate up to the exhaust without being directly below the oil pan and tranny which would probably scrape the road.

 

[stevechumo]

I run a twin downpipe (flattened up to 1.5" from 2.25" pipe) underneath the cross memember and the oil pan. I only scrape them only once in awhile. :tongue: But none of the pipes hit the oil pan. I still have 3" ground clearance. There's actually room on passenger side, along and underneath the header for the downpipe. It'll be tight but there's enough room for a 2.5" going to the turbo, and a 3" downpipe back. What car is yours?

 

[Boostage]

buying a 99-00 gs400

 

[stevechumo]

A GS has better ground clearance than the SC so I think the downpipe underneath should be ok. As long as you have 4" off the ground, you're safe. I used to have lowered Hondas with 3" ground clearance with no problem. The trick is to separate the twin pipes so the middle is empty and higher. So when you go over uneven ground, you can avoid the sharp point on the surface better.

 

[XR8tt]

I guess 3" pipe flattened down alittle would work o/k ??
Through this area..

 

[Turbo4L]

We ran a 4" pipe where the ac compressor use to be, beside the engine mount then split it into dual 3"

 

[scotturnot]

LOL, thats my cars old exhaust! I would know it anywhere.

 

[stevechumo]

That's a nice clean exhaust system you got there, Scott.

 

[scotturnot]

That's a nice clean exhaust system you got there, Scott.

Thanks Steve!
Actualy I sold most of the front section, and will be doing another custom setup with my new headers.

 

[tom steele]

what kind of headers are you going to be running