NoPistons -Mazda Rx7 & Rx8 Rotary Forum
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NoPistons -Mazda Rx7 & Rx8 Rotary Forum (https://www.nopistons.com/)
-   2nd Generation Specific (https://www.nopistons.com/2nd-generation-specific-17/)
-   -   Secondary Port Woes (https://www.nopistons.com/2nd-generation-specific-17/secondary-port-woes-14289/)

j9fd3s 03-23-2003 09:18 PM
Originally Posted by rotary>piston' date='Mar 23 2003, 06:38 PM
the header is blocking the backpressure hole up at the block. If you take it off you'll see it. Also, look at your stock manifold or gasket. There'll be a mysterious hole in it, that's how the actuators get their backpressure. That hose going to the cat is a different thing. It won't do a thing for your actuators.
the 84-88's have a seperate hose for the actuators



mike

FCmaniac 03-24-2003 06:25 AM
Originally Posted by j9fd3s' date='Mar 23 2003, 10:18 PM
the 84-88's have a seperate hose for the actuators



mike
Mike, how do you re route the air pump to activate them and will it do it at the right rpm or just open them all the time? I have mine wired open right now and it does suck for driving around town at low rpm... temporary until I get my new cat installed.

Baldy 03-24-2003 07:32 AM
Originally Posted by 1Revvin7' date='Mar 23 2003, 09:23 PM
The ports will only open under load, revving the engine does not produce load, You have to be driving it. Put a hunk of grease on the bottom of the actuator rod, go for a spin then check after to see if it is smeared..
I'll give that a shot.

j9fd3s 03-24-2003 11:22 AM
Originally Posted by FCmaniac' date='Mar 24 2003, 04:25 AM
[quote name='j9fd3s' date='Mar 23 2003, 10:18 PM'] the 84-88's have a seperate hose for the actuators



mike
Mike, how do you re route the air pump to activate them and will it do it at the right rpm or just open them all the time? I have mine wired open right now and it does suck for driving around town at low rpm... temporary until I get my new cat installed. [/quote]

you tap a fitting into the airpump hose, and you put a bleeder valve on it so that the ports open when you want em too



mike

FCmaniac 03-24-2003 11:55 AM
hmmm, good idea.. I guess you could still remove your ACV then, run a header with no backpressure tube, whatever....

j9fd3s 03-24-2003 12:10 PM
yup, you could do that



mike

Travisty 03-24-2003 12:53 PM
uh i know i have said it before but i just ripped out the sleeves all together.

i honestly have not noticed a drop in performance at low rpm's. the car is still very driveable and it was a slight gain on the top end. ask vosko about it.

he has driven the car and can concur with the what i just said.

vosko 03-24-2003 12:54 PM
yup we simplified travis GXL as much as possible. it runs great ! https://www.nopistons.com/forums/pub...IR#>/smile.png

Apex13B 03-24-2003 08:42 PM
wired mine open also on my 89vert and only noticed a very small difference below 3300 rpm..after that it goes like a mutherfucker

Baldy 03-25-2003 12:44 PM
Originally Posted by Baldy' date='Mar 24 2003, 08:32 AM
I'll give that a shot.
did that...I didn't see any evidence that they had moved https://www.nopistons.com/forums/pub..._DIR#>/sad.png



could the kinked rubber hose before the check valve have any affect on it?



I really want these to work



later today or tomorrow I'll try the paper clips instead of the grease, in case I was misinterpreting what I saw


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