i got a tri-y at pick and pull for 30 bucks.luckily all i had was a 14mm. the kid at the window was pissed. its worth it but i wouldnt pay no restocking fee for their bad.

 

not to change the subject but i'm about to make the header decision for my 3VZE.

I'm not interested in increasing HP as much as I am interested in saving the headgaskets and not spending a fortune. I was thinking Doug Thorley (cuz Downey is no longer an option) but wondered what y'all thought. I have a CA legal Magnaflow cat & muffler.

One thing is certain: after reading TwistedToys last post I am going to spend a little more time at Pick-N-Pull, looking around...

 

i think doug thourleys are a good idea my dad has downeys for the 3.slow and they crack the emission fitting for the egr i think and ofcourse created an egsaust leak also we had to weld the o2 bung and also a little heads up putting headers on that motor SUK! ur looking at 2 1/2hrs to 3 thats if everything goes smooth i can get some pics 4 u if u like

 

the largest advantage gained from running a tri y header over a 4 to 1 is that they increase scaveging of exhaust gases from the cylinder which increase's your volumetric efficiency. It gives almost the same afffect as running a cross over tube on V style motors.

 

Better late than never.

But you are 100% correct. When it comes time I'll be picking up one of these.

 

oh well if headers are developed for a big block V8 then they must be good for a 2.4l four cylinder..........yes I realize they are 4 cylinders, but I bet the firing order would be different so will the header design.......

get a header designed for the intended engine, not based on another engine....

 

DT tri-y pricey but it performs well 2 1/4" pipe with a Borla SS muffler
LCE ceramic SS 4 to 1 header last very long because I replaced 2 mufflers and still running leak free