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RX-8 Engines........... AT vs MT

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Old 10-23-2003, 09:23 PM
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RX-8 Engines........... AT vs MT

I'm looking for a slightly more techical aspect, why?

Here's the skinny....a co-worker found out I got an 8, he asked if I got the sooped up engine...?????

My repsonse: There's really only one engine, just that the AT utilizes 4 valves whereas the MT utiliizes 6.

Can someone clarify this stuff for me so he'll leave me alone....unfortunately, he doesn't work directly for me so I can't make him scrub the hanger deck with his toothbrush as I would like to see him do.
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Old 10-23-2003, 09:41 PM
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The engines have quite a few differences - the AT low power engine has 4 ports and a dual stage intake manifold, and 2 injectors per rotor. The MT high power engine has 6 ports and 3 injectors per rotor, and a 3 stage intake manifold. So, physically (# of ports) the engines are different, and the injector/manifold differences are also significant.

Regards,
Gordon
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Old 10-23-2003, 09:58 PM
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So would that be considered 2 different engines tho? It's still a RENESIS 1.3L....yes?
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Old 10-24-2003, 01:28 AM
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tons and tons to read if you search. lotsa stuff.

yeah, they're the same block and componentry, but the lower power motor has VERY different intake porting and hardware, with a different tune to it as well. lower redline, higher peak torque number, and lower horsepower are a few symptoms of this difference in the tuning.

if you can't find the things i'm asking you to search for, PM me and i'll reopen this.
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