Built my first Renesis motor 12/01/08 (Pictures)
#28
BDC Motorsports
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Let me think here... apex seals are shorter and a bit more difficult to get apex seal springs underneath once they're already slotted into the rotors placed into the rotor housing. Oil control rings the same 'cept the addition of the outer scraper. Easy to put in though. Bearings press the same as the REW ones. Make sure the front stationary gear bearing is atleast flush with the thrust washer land on the gear or it'll shorten the stack! Corner seals are identical so no change there. Three tension bolts are longer than the regular, shorter 17 (easy to notice where they go) but torquing order is the same. It assembled basically the same as the 13BT/REW.
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#30
BDC Motorsports
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Yeah, don't let anyone rip you off on the short block assembly. It's the same length of time. I was around the 6hr mark I think including bearing press, pilot bearing, and front/rear main seals.
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#35
BDC Motorsports
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#36
The Local Idiot
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Tear-down pics of a 4 port can be found in this thread:
https://www.rx8club.com/series-i-tech-garage-22/117k-mile-renesis-teardown-161105/
https://www.rx8club.com/series-i-tech-garage-22/117k-mile-renesis-teardown-161105/
#38
kevin@rotaryresurrection
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BTW I was told several weeks ago that you wanted to speak to me?
#39
BDC Motorsports
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Its not what you are thinking Brian, it is basically the renesis 6 port engine, with the 2 auxiliaries blocked off. The secondary ports are not big like a 13bt/rew. The secondary runners on the 4 port are tiny, smaller than a 13bt. Basically if yo look at the 6 port intake manifold you have there and imagine it without the auxiliaries, that is a 4 port. I can take some comparison pics if you want.
BTW I was told several weeks ago that you wanted to speak to me?
BTW I was told several weeks ago that you wanted to speak to me?
Don't recall needing to speak to you but I'll give you a call nonetheless.
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#40
#41
#43
Re-sizing the ports isn't what gave me my enhanced torque curve. It was the backfilled radii that did. Smooth transitions and rough surfaces (boundary layer effect) are all that is needed.
#44
BDC Motorsports
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One thing that's positive regarding porting and the Renesis -- atleast there's less housings to ship for port work -- 3 instead of 5!
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#45
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#47
kevin@rotaryresurrection
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I fully build the rotors minus apex springs, install them in the housings, then remove corner seal one at a time when sliding the springs in place, then replace the corner seal. On the older rotaries this is unnecessary because the "plug" in the corner seal is easily removable from the outside, is soft enough to "give" to let the pick slide down far enough, or is often left out altogether. While the renesis "plug" is metal and can only be removed from the back side of the seal, so the whole seal has to come out.
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