20B RX-8 conversion...about damm time!
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So here it is. I will be doing the conversion on my RX-8. Some of you know my car, others don't so here are some pics of the Renesis setup before I pulled everything out.
I plan to do the entire conversion, build, tuning etc myself just like I always build my cars. And yes it is a personal goal and challenge ;). I plan to take this entire year on the build so be patient. I am getting married this year and that really slows things down...hehe..don't let her hear that. Proposed setup: 20B, Dowel-pinned, large streetport BW S475 1.32A/R Quickspool valve ( http://performancemetalwerkz.com/Sales.html ) 4" FMIC 5" to 4" DP (car has full 4" exhaust already) LT12s Microtech LS2 and MSD LS2 coils RA apex seals 3 into 1 collector manifold (like the one on the renesis but bigger) Front subframe fabricated out of rectangular tube moving rack 2"fwd and 2"down etc etc etc....blah blah blah..will add as needed... Goals are a very reliable 550-600whp car at relatively low boost with a long power band to at least 82-8500rpm.(that is the reason for the large rear A/R and turbine with the no-so-large compressor) Thanks for looking. Chris First version turbo kit (reached 414whp) (in production via Esmeril Racing) Attachment 711136 My own Renesis Apex seals http://photos-h.ak.fbcdn.net/photos-...72583_9140.jpg http://hphotos-snc1.fbcdn.net/hs109...._1349147_n.jpg Building the last manifold http://photos-c.ak.fbcdn.net/photos-...72615_3852.jpg http://photos-a.ak.fbcdn.net/photos-...72616_4086.jpg First turbo Renesis half-bridge port http://hphotos-snc1.fbcdn.net/hs109...._1185926_n.jpg http://hphotos-snc1.fbcdn.net/hs109...._1631800_n.jpg http://hphotos-snc1.fbcdn.net/hs109...._6211902_n.jpg http://hphotos-snc1.fbcdn.net/hs109...._1481098_n.jpg http://photos-a.ak.fbcdn.net/hphotos..._3133548_n.jpg |
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One new...very important part has arrived!
That is a 5 gallon pail and a 19" rim (or what's left of it...hehe...:/....don't ask...long time ago.) |
I am planning my exhaust manifold. I want to do medium length runners as close as possible to equal length into a 3-1 collector right before a bend into the T6 Divided flange (quick spool valve).
What runner size do you guys recommend for each rotor? The motor will be street ported. Also, after the collector, should I do a 3" pipe to the flange or a 3.5" one? I am planning a manifold similar to the TwinsTurbo one on their 13b but instead of going over the top of the turbo which makes it extremely long, I plan to come from the bottom like this guy: https://www.rx7club.com/single-turbo-rx-7s-23/wastegate-runner-length-875775/ Thanks in advance. Chris |
Do u have any videos of ur car in action?
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Very interesting stuff!
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looks good!
i am interested to see the results with the quick-spool valve. how was the boost response with the air to water intercooler? was it not too great? i see you are going back to a fmic.. |
Originally Posted by Chaotic_FC
(Post 9770357)
looks good!
i am interested to see the results with the quick-spool valve. how was the boost response with the air to water intercooler? was it not too great? i see you are going back to a fmic.. Chris |
wow wiggins clamps.. one of those clamps is worth more than my whole car.
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Originally Posted by stevensimon
(Post 9770923)
wow wiggins clamps.. one of those clamps is worth more than my whole car.
Chris |
set up
very nice set up chris like it alot does it spool it quick?
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Originally Posted by RZMotorsports
(Post 9774870)
very nice set up chris like it alot does it spool it quick?
Chris |
nice build... looks like your doing great
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Originally Posted by ChrisRX8PR
(Post 9770036)
I am planning my exhaust manifold. I want to do medium length runners as close as possible to equal length into a 3-1 collector right before a bend into the T6 Divided flange (quick spool valve).
What runner size do you guys recommend for each rotor? The motor will be street ported. Also, after the collector, should I do a 3" pipe to the flange or a 3.5" one? I am planning a manifold similar to the TwinsTurbo one on their 13b but instead of going over the top of the turbo which makes it extremely long, I plan to come from the bottom like this guy: https://www.rx7club.com/showthread.php?t=875775 Thanks in advance. Chris |
Originally Posted by calicrewchief
(Post 9780593)
Please excuse my ignorance, but doesn't a divided exhaust manifiold defeat the purpose of the quick spool valve? Wouldn't you want exhuast flow from both rotors?
For the quickspool valve to work you need a joined manifold where all the runners join before or at the turbo flange and you need a divided housing on the turbo. Then when the valve is closed all the exhaust goes through one of the volutes in the turbo making the speed of the gases faster than through both and when the turbo spools the valve opens to allow gases through both volutes. I hope I didn't make it more confusing for everyone :P Chris |
Originally Posted by ChrisRX8PR
(Post 9780613)
Good question and you are right...maybe I wasn't clear. If you notice, the two manifolds I referenced join the runners before they reach the turbo flange. This means you do have all rotors joined when it reaches the turbo, in this case all 3 rotors, and this is good because its hard to do a divided manifold on a 3 rotor.
For the quickspool valve to work you need a joined manifold where all the runners join before or at the turbo flange and you need a divided housing on the turbo. Then when the valve is closed all the exhaust goes through one of the volutes in the turbo making the speed of the gases faster than through both and when the turbo spools the valve opens to allow gases through both volutes. I hope I didn't make it more confusing for everyone :P Chris |
Nice set up
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Good luck with this build over the course of this year! Looking forward to seeing you progress...
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Just a few things that are getting ready to be put to good use.
Driver's side engine mount, will allow the 20B to bolt up to the RX-8 mount... ;) http://photos-f.ak.fbcdn.net/hphotos..._6410429_n.jpg OEM Pass side engine mount (needs some modification but will fit the 20B onto the stock RX-8 mount. http://photos-c.ak.fbcdn.net/hphotos..._4605776_n.jpg 2" SS bends for Manifold http://photos-e.ak.fbcdn.net/hphotos..._4892278_n.jpg Flanges and collector for Manifold http://photos-d.ak.fbcdn.net/hphotos..._1365392_n.jpg Assorted 4" mandrel bends for DP left over from exhaust build http://hphotos-snc3.fbcdn.net/hs422....21_96101_n.jpg Next update will be of me "going to town" on the sub-frame with a hacksaw...hehe...don't worry, I'll make it look good ;) Chris |
Originally Posted by ChrisRX8PR
(Post 9768823)
Building last setup (PT71GTQ Billet, 508whp on E-85)
http://photos-c.ak.fbcdn.net/photos-...01059_1101.jpg http://photos-e.ak.fbcdn.net/photos-...80200_3508.jpg http://hphotos-snc1.fbcdn.net/hs109...._3629561_n.jpg http://i679.photobucket.com/albums/v...g?t=1264727507 http://i679.photobucket.com/albums/v...g?t=1264728063 |
Quick question, those guys http://performancemetalwerkz.com/Sales.html that make the quick spool valve,is it true that their out of business? just wondering if you have info?
Thanks. |
What suspension setup are you running?
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Are you running OEM brakes or what did you upgrade to?
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Can you post some pics of any interior and exterior mods?
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This will be nice to see progress. As I'm looking to buy a D' series 20B as I type to power my Rx8. I might hit you up for some advise in the near future.
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Originally Posted by Chuck Norris FB
(Post 9890367)
Quick question, those guys http://performancemetalwerkz.com/Sales.html that make the quick spool valve,is it true that their out of business? just wondering if you have info?
Thanks. |
Originally Posted by Chuck Norris FB
(Post 9941741)
Can you please answer this question,Thank you..:icon_tup:
Their website is still up so someone is paying the hosting fees... Chris |
Long time Dude hows the progress:icon_tup:
Hey dude that Quick spool valve sight is gone:( |
looks like a badass build. always loved the 8's
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Originally Posted by Chuck Norris FB
(Post 10072439)
Long time Dude hows the progress:icon_tup:
Hey dude that Quick spool valve sight is gone:( http://performancemetalwerkz.webs.com/ Chris |
Originally Posted by ChrisRX8PR
(Post 10072852)
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Chris...that is looking uber sweet. I am in the middle of doing my 20B build into my RX8 currently. Hope you wont mind if I pick your brain a little in the near future.
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Sound performance also makes a quick spool valve. Check there web site.
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Originally Posted by justturbo2
(Post 10175482)
Sound performance also makes a quick spool valve. Check there web site.
Too Expensive..:icon_tdow |
Originally Posted by Chuck Norris FB
(Post 10175674)
Too Expensive..:icon_tdow
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That "quick spool" valve won't work on a 13B. It will actually make it worse.
-J |
I think he's putting it on the up-coming 20B engine. I could see it benefiting a 20B setup. But you're right, fully divided 13b manifolds yield better spool, well at least according to Mazda's research :D
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Did you ever get a video or dyno chart of the 500whp set up on the Renesis?
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Originally Posted by ChrisRX8PR
(Post 10072852)
Anyway, looking forward to seeing more of your 3 rotor build. |
An update would be good.
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would really like to see what you did with passenger side engine mount....
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Oh well...
Basically, Got married, started business full time (an therefore quit my day job)...enough time went by without my car that I decided to do a Cosmo 13B-RE conversion instead of the 20B to get it on the road so I can drive the freaking thing. I don't have the time to fab up the 20b conversion and the 13b-re is pretty much a "drop in" by comparison... Because it is no longer a 20B build you can follow my new build thread here: https://www.rx7club.com/showthread.p...9#post10987359 Thanks for looking! Chris |
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