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Post by danmcmillen on May 3, 2009 21:10:33 GMT -3
I have been looking in to the RX-7 engine. It is a lot of horse power in a small package.At this point I am hot sure witch engines will fit IE injected and turbo may not fit under the hood. The normally aspirated engine has the thermal reactor which I think would get to hot for for the fiberglass I worked as a mechanic at a mszda dealer in the late 70's and I think there was one model engine 13B that was normally aspirated with out the thermal reactor. I am looking in to it.
I will post what I find if some one is interested in it.
It would be quite the performer if that is what you are looking for,
I mite be I don't know yet.
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Post by vmrod on May 4, 2009 21:56:17 GMT -3
Isn't the RX-7 motor a fairly high RPM motor? I bet that would REALLY put some lightning into your XR3. You can always change-up the body a little to accommodate the motor, if it is only a little bigger. I wouldn't even worry about the turbo.
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Post by danmcmillen on May 14, 2009 21:53:06 GMT -3
Yes the engine red lines around 8,500 to 9,000 rpm depending on the year. I agree I don,t need the turbo. the block is much smaller then the kabota, but all the things that go with the engine take up a lot of room. and you have to be careful not to get the year that has the thermal reactor, there would be way to much heat for a fiberglass body.
It is all so much lighter. It would get up to speed on the freeway plenty quick.
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Post by vmrod on May 15, 2009 7:44:51 GMT -3
Do you have any 3D software? It would be a BIG help, if you plan on making changes.
I would like to see that engine in the XR3. Light body with a fast revving engine is a great combo.
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Post by khourig on Jun 3, 2009 13:22:12 GMT -3
I had an '83 12A Rx-7 that had a thermal reactor, but i took it off (replaced with a header) since i didn't have to pass emissions in my state. If you were worried about heat, there are ceramic coatings for the inside of the header and heat wrap for the outside.
I also had an '87 13B turbo. There was no thermal reactor on that one, just a short manifold to the turbo and then a regular pipe to the cat.
I don't know what a stock 13B or the Renesis 13B uses for exhaust, having not owned either.
In any case, if you aren't worried about emissions, a header will be fine and there are heat treatments for the exhaust. A heat shield mounted to the fiberglass around the exhaust might not be a bad idea.
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Post by vmrod on Jun 4, 2009 8:59:28 GMT -3
Khourig,
are you building yet? If so, you are welcome to open up a "building blog" thread in the construction diary area.
Also, feel free to store your ideas (links, pics, graphs, whatever) on this website. I built it for just not me, but the use of others that wanted a place to compile and store their potential components.
If you would like another section added, just ask, and I can make a new topic area or category.
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