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RX-7 2nd Gen Specific (1986-92) RX-7 1986-92 Discussion including performance modifications and technical support sections.

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Old 06-26-2009, 12:10 AM   #1
TitaniumTT
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Originally Posted by kuromi7 View Post
Ted's softening up, he went easy on you guys...he must like you. This, plus teh other mods to drop intake temps eventually add up.
- Phoenix7 (logged in as Brooke apparently.)
I was crowned the evil forums Epic N00b Powerhouser so I wouldn't consider that the slightest bit insulting or demeaning in comparision to some of the things that I've said to people soooooooooo, whatever.

On to more important things. I never once claimed anything about horsepower becuase I never had a chance to dyno anything nor would it make a shit of difference because the engine was rebuilt with better housings and different seals so any claim would be completely bullshit.

I didn't mention any numbers about the AIT's because the proper place to measure those to make the comparision would be in the LIM which I'm not.

I mentioned the coolant temps that saw a difference that were logged.

And someone explain to me how exhaust gases can get past the PLUG IN THE PORT that I built?
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Old 06-26-2009, 01:04 PM   #2
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Originally Posted by TitaniumTT View Post
And someone explain to me how exhaust gases can get past the PLUG IN THE PORT that I built?
I don't think it can.

Rather, that exhaust is still getting around the sleeve itself and thereby heating that entire aluminum portion surrounding it (which is cooled by the jackets). Despite the fact that it can't get out of that chamber now since you plugged it - that portion of the AL on the housing is being blasted with exhaust.



I tried to minimize it by welding shut those holes in the sleeve, but the leading edge of the sleeve still doesn't seal against the housing and until it can, gas will still go around (a bit...)
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Old 06-26-2009, 01:55 PM   #3
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Originally Posted by classicauto View Post
Rather, that exhaust is still getting around the sleeve itself and thereby heating that entire aluminum portion surrounding it (which is cooled by the jackets). Despite the fact that it can't get out of that chamber now since you plugged it - that portion of the AL on the housing is being blasted with exhaust.



I tried to minimize it by welding shut those holes in the sleeve, but the leading edge of the sleeve still doesn't seal against the housing and until it can, gas will still go around (a bit...)
Yep, despite his limited intelligence, he still can't quite grasp the idea of exhaust gases getting around the exhaust sleeve...literally.
Mazda designed the exhaust sleeve so that exhaust gases can get around it, hence, my statement about that particular fact earlier.
I bet there's more exhaust gas entering the leading edge of the exhaust sleeve versus the two holes on the "ceiling" of the exhaust sleeve itself.
The exhaust gas vector is more apt to enter that way.
Keep in mind that in most set-up's, there's also a scavaging effect downstream (from the other rotor) causing a negative pressure area that makes it even harder for the exhaust gases to enter those two holes.

If he's bitching about how much exhaust gases are getting past even with his plugged holes inside the exhaust sleeve, why bother plugging the two holes in the first place?


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Old 06-26-2009, 08:06 PM   #4
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Originally Posted by RETed View Post
Yep, despite his limited intelligence, he still can't quite grasp the idea of exhaust gases getting around the exhaust sleeve...literally.
Mazda designed the exhaust sleeve so that exhaust gases can get around it, hence, my statement about that particular fact earlier.
I bet there's more exhaust gas entering the leading edge of the exhaust sleeve versus the two holes on the "ceiling" of the exhaust sleeve itself.
The exhaust gas vector is more apt to enter that way.
Keep in mind that in most set-up's, there's also a scavaging effect downstream (from the other rotor) causing a negative pressure area that makes it even harder for the exhaust gases to enter those two holes.

If he's bitching about how much exhaust gases are getting past even with his plugged holes inside the exhaust sleeve, why bother plugging the two holes in the first place?


-Ted
Are you blind or retarded? And that's a serious question. Look at the pic I posted after you take your head out of your ass and then ask yourself how exhaust can get past that. Yeah yeah radiant heat etc etc but now its contained and not spreading up to the LIM heating the AITs and passing the exhaust heat into the coolant and the rest of the engine. NOT through the LIM as that sounds. Ever weld aluminum? Notice how far and FAST that heat travels?
__________________
-The Angry Stig-
DGRR 2009, 2011, 2012 & 2013 - Best FC

DEALS GAP!! WOOHOOOO!!!!!

2015 Audi S4 - Samantha - Zero Brap S4
2004 RX8 - Jocelyn - 196rwhp, 19mpg fuel to noise converter
2000 Jeep Cherokee Sport - Wifey mobile - Now with 2.5" OME lift and 30" BFG AT KO's! So it begins
1998 Jeep Cherokee - 5 spd, 4" lift, 33" BFG's - Rotary Tow Vehicle
1988 'Vert - In progress
1988 FC Coupe - Gretchen -The attention whore BEAST!


I'm a sick individual, what's wrong with you?
I'm pure Evil
I'm still insane, in the best possible way.
I think Brian's idea of romance is using lube.
Your rage caused the meteor strike in Russia. The Antichrist would be proud of his minion.
You win with your thread. Most everything
It's a truck with a steel gate on the back. Just a statement of fact

Motec M820, AIM dash, ported 13B-RE Cosmo, 6-spd trans, 4.3 Torsen, custom twin wg fully divided mani, Custom 4" split into 2x 3" exhaust, Custom HMIC, Custom custom custom custom I like to welder stuff....
No Bolt-ons allowed. Dyno'ed @ Speed1 Tuned by me - 405rwhp on WG.... WM50 cuming soon.
-Angry Motherf*cker Mode ENGAGED-

Last edited by TitaniumTT; 06-26-2009 at 09:33 PM.
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