How much does the Renesis weigh?
01-02-2007, 01:27 PM
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How much does the Renesis weigh?
Wonder how much does the rotary engine weigh compare to a typical 4 cylinder engine like a K20z3. Reason I'm asking is saw info on the Ariel Atom and wonder if it would be lighter using a renesis engine instead of the honda motor.
http://www.automotivearticles.com/12...Atom_USA.shtml
http://www.automotivearticles.com/12...Atom_USA.shtml
Last edited by Hanzo; 01-03-2007 at 09:27 AM.
01-02-2007, 02:13 PM
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https://www.rx8club.com/rx-8-discussion-3/renesis-experiment-106010/page2/
check the bottom of this page and the third page. it's being discussed for an MX-5 swap.
check the bottom of this page and the third page. it's being discussed for an MX-5 swap.
01-02-2007, 02:38 PM
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We've been through this a few times and it seems no one really knows for sure. Well, people know but definitive info is difficult to find. Simplest answer is that it's heavier than some 4 cylinders and lighter than others. Dressed it seems to weigh a touch over 300 lbs. which is about 20 lbs. lighter than the F20C that was in the S2K.
01-02-2007, 08:29 PM
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Originally Posted by zoom44
ahh here it is: per Jim Merder at Racing Beat, the fully dressed Renesis engine with all attachments sans airbox weights 267.5lb.
01-02-2007, 08:35 PM
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Well Ike, these are *kind of* estimates, but also going from memory..
I believe the front + rear irons weigh around 35lb each, with the middle iron weighing about 40lb. The housings are roughly 15-20lb each. Rotors..10-12lb each.
I would expect the fully built shortblock to weigh in at roughly 150lb, assuming that my weights above are rather high. I can pick it up and carry it by myself, with the oil pan removed, but with the flywheel still on...so..
I believe the front + rear irons weigh around 35lb each, with the middle iron weighing about 40lb. The housings are roughly 15-20lb each. Rotors..10-12lb each.
I would expect the fully built shortblock to weigh in at roughly 150lb, assuming that my weights above are rather high. I can pick it up and carry it by myself, with the oil pan removed, but with the flywheel still on...so..
01-02-2007, 08:43 PM
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So where is Babylou getting this info? I've seen similar numbers elsewhere. Lastly, why is Mazda so tightlipped about the weight of the Renesis?
http://www.rx-8forum.com/showpost.ph...0&postcount=21
http://www.rx-8forum.com/showpost.ph...0&postcount=21
01-02-2007, 08:44 PM
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Originally Posted by AdRoCK3217
Well Ike, these are *kind of* estimates, but also going from memory..
I believe the front + rear irons weigh around 35lb each, with the middle iron weighing about 40lb. The housings are roughly 15-20lb each. Rotors..10-12lb each.
I would expect the fully built shortblock to weigh in at roughly 150lb, assuming that my weights above are rather high. I can pick it up and carry it by myself, with the oil pan removed, but with the flywheel still on...so..
I believe the front + rear irons weigh around 35lb each, with the middle iron weighing about 40lb. The housings are roughly 15-20lb each. Rotors..10-12lb each.
I would expect the fully built shortblock to weigh in at roughly 150lb, assuming that my weights above are rather high. I can pick it up and carry it by myself, with the oil pan removed, but with the flywheel still on...so..
01-02-2007, 08:49 PM
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Some corrections. The rotors weigh approx. 9.2lb each (Source: Racing Beat)
The stock irons weigh roughly 26lb each (Source: Racing Beat, 1993 RX7)
With that knowledge, I would assume the housings are around 10-15lb.
That puts engine weight, with front cover + all gears, oil pump, etc, at around 150lb.
The stock irons weigh roughly 26lb each (Source: Racing Beat, 1993 RX7)
With that knowledge, I would assume the housings are around 10-15lb.
That puts engine weight, with front cover + all gears, oil pump, etc, at around 150lb.
01-02-2007, 08:52 PM
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Originally Posted by Ike
You're still missing a lot of things there. It's also important to note that some manufacturers include full exhaust with engine weights while others do not.
Like what? x.x
Apex seals? Oh..ok..set of 6 <.< 1 lb..or less..xD
With all the *big* parts added up (rotors, irons, housings), I got about 126lb. The oil pump + chain weigh about 4lb together. I'd say my 20lb-margin, saying it weighs 150lb in short block form, is plenty to include all seals, springs, gaskets, vaseline, etc.
I do not include full exhaust, because that is not the engine, and would not be swapping into a different car. That is..retarded.
01-02-2007, 08:55 PM
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Here's an interesting link even if it doesn't give us much in the way of answers.
http://wheeltalk.fancal.net/wp-conte...ine_weight.txt
http://wheeltalk.fancal.net/wp-conte...ine_weight.txt
01-02-2007, 08:58 PM
#18
^ it gives is an idea...
Mazda 12A and 13B 260 (109)
Mazda 10A rotary 224 (20) (Cosmo) (bare)
Mazda 10A rotary 268 (20) (R100) (bare)
Mazda 10A rotary 190 (27) (R100) (without thermal reactor)
Mazda 10A rotary 280 (27) (R100) (with thermal reactor)
Mazda 12A rotary 348 (20) (RX7) (with oil and water)
Mazda 12A rotary 356 (20) (Japanese model turbo, EFI)
Mazda 12A rotary 275 (85) (w/flywheel, t.reactor, no alt.)
Mazda 13A rotary 301 (20) (R130 Lucia - Japan only) (bare)
Mazda 13B race 242 (95) 2-rotor race motor, with accessories
Mazda 13G 3-rotor race 319 (95) 3-rotor race motor, with accessories
Mazda 13J 4-rotor race 396 (95) 4-rotor race motor, with accessories
Mazda 13B FI 337 (197) 1986-1992 160hp (w/oil and water)
Mazda 10A rotary 224 (20) (Cosmo) (bare)
Mazda 10A rotary 268 (20) (R100) (bare)
Mazda 10A rotary 190 (27) (R100) (without thermal reactor)
Mazda 10A rotary 280 (27) (R100) (with thermal reactor)
Mazda 12A rotary 348 (20) (RX7) (with oil and water)
Mazda 12A rotary 356 (20) (Japanese model turbo, EFI)
Mazda 12A rotary 275 (85) (w/flywheel, t.reactor, no alt.)
Mazda 13A rotary 301 (20) (R130 Lucia - Japan only) (bare)
Mazda 13B race 242 (95) 2-rotor race motor, with accessories
Mazda 13G 3-rotor race 319 (95) 3-rotor race motor, with accessories
Mazda 13J 4-rotor race 396 (95) 4-rotor race motor, with accessories
Mazda 13B FI 337 (197) 1986-1992 160hp (w/oil and water)
01-02-2007, 09:02 PM
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Originally Posted by AdRoCK3217
Like what? x.x
Apex seals? Oh..ok..set of 6 <.< 1 lb..or less..xD
With all the *big* parts added up (rotors, irons, housings), I got about 126lb. The oil pump + chain weigh about 4lb together. I'd say my 20lb-margin, saying it weighs 150lb in short block form, is plenty to include all seals, springs, gaskets, vaseline, etc.
I do not include full exhaust, because that is not the engine, and would not be swapping into a different car. That is..retarded.
Apex seals? Oh..ok..set of 6 <.< 1 lb..or less..xD
With all the *big* parts added up (rotors, irons, housings), I got about 126lb. The oil pump + chain weigh about 4lb together. I'd say my 20lb-margin, saying it weighs 150lb in short block form, is plenty to include all seals, springs, gaskets, vaseline, etc.
I do not include full exhaust, because that is not the engine, and would not be swapping into a different car. That is..retarded.
01-02-2007, 09:26 PM
#22
From the pages of the Holy RX8 hardbound book, I quote as follows:
The rotors weigh 8.6 lbs each.
The RENESIS is 30 percent smaller than the twin turbo 13B-REW
I will continue to scour the book for more weights, and will post if I find anything else of interest.
Later
Corvus13
The rotors weigh 8.6 lbs each.
The RENESIS is 30 percent smaller than the twin turbo 13B-REW
I will continue to scour the book for more weights, and will post if I find anything else of interest.
Later
Corvus13
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