Need help for header and 5/6th port activation
#1
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Need help for header and 5/6th port activation
So here's the deal, I've got my full true dual exhaust system just about ready to go, except for the fact that my header does NOT have a 5th6th port activation tube or whatever.
I want to keep my 5th and 6th ports working of course, so how can I go about doing that? Just cut a hole, insert a thin pipe, and weld it on? zip tie open 5th/6th ports? rpm activation?
Just looking for some people with EXPERIENCE. Not to sound like a dick, but opinions get biased.
Thanks
I want to keep my 5th and 6th ports working of course, so how can I go about doing that? Just cut a hole, insert a thin pipe, and weld it on? zip tie open 5th/6th ports? rpm activation?
Just looking for some people with EXPERIENCE. Not to sound like a dick, but opinions get biased.
Thanks
#2
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By the way, I searched and found that my best bet would be to have the exhaust pressure open them up, so how should I do that with an exhaust without one? Just weld a nipple or small tube in?
Thanks
Thanks
#3
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Do *not* wire the ports open...too much bottom-end is lost to make it worth it, plus that just sounds like a bad idea, logically.
I think your initial idea of just drilling a hole makes the most sense. I think RPM activation is too complicated when you have a solution that's much easier to implement.
Not to sound like a dick back at you, but even those with experience have different opinions...so bias will almost always come into play. :-)
I think your initial idea of just drilling a hole makes the most sense. I think RPM activation is too complicated when you have a solution that's much easier to implement.
Not to sound like a dick back at you, but even those with experience have different opinions...so bias will almost always come into play. :-)
#5
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What year is your car? 86-88 (exhaust back pressure activation for factory 6PI system), or 89-91 (air pump activation via solenoid and ECU). Your profile shows 84 RX-7 so that doesn't help.
Your system may not provide enough backpressure to activate the system at any RPM at all. Welding a nipple wouldn't help, and without a valve of some sort, you wouldn't be able to control activation RPM. Wiring them open will cost you low RPM power and torque.
If 86-88, you either go modified Air pump activation with a valve and dump, or electronic (RPM sensor, electric air pump and solenoid).
If 89-91, you're laughing, although you have to keep the air pump. You can also use the electronic activation.
See archive.
Your system may not provide enough backpressure to activate the system at any RPM at all. Welding a nipple wouldn't help, and without a valve of some sort, you wouldn't be able to control activation RPM. Wiring them open will cost you low RPM power and torque.
If 86-88, you either go modified Air pump activation with a valve and dump, or electronic (RPM sensor, electric air pump and solenoid).
If 89-91, you're laughing, although you have to keep the air pump. You can also use the electronic activation.
See archive.
#6
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I have an 88.
"86-88, you either go modified Air pump activation with a valve and dump, or electronic (RPM sensor, electric air pump and solenoid)"
Thanks, it all seems a bit confusing to me as to how to hook it up - but I'll read up as much as I can. Thanks!
"86-88, you either go modified Air pump activation with a valve and dump, or electronic (RPM sensor, electric air pump and solenoid)"
Thanks, it all seems a bit confusing to me as to how to hook it up - but I'll read up as much as I can. Thanks!
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