| Vancouver Auto Chat 2016 VAC Community Head Moderator: Raid3n |
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09-05-2009, 12:24 AM
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#51 | | Rotary dori dori MOD
Join Date: Oct 2006 Location: vancouver
Posts: 1,833
Thanked 96 Times in 37 Posts
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wth?! how u get 450km a tank from an rx8. i get around 350km max. u drive mainly highway or something?
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09-05-2009, 11:02 AM
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#52 | | Revscene.net has a homepage?!
Join Date: Dec 2006 Location: surrey
Posts: 1,203
Thanked 2,719 Times in 392 Posts
Failed 430 Times in 81 Posts
| http://www.youtube.com/watch?v=eq7w7110SkQ
You can do some searching if you want to see it in action 
__________________
2014 Taco TRD
2006 3 GT
1993 Integra RS
1982 TE72
1988 5.0
1990 S13 Coupe
2006 Mazda B4000 4x4
1987 Ae86 Coupe
1988 Cressida Wagon
1985 Cressida 7m Swap
1987 Ae86 Hatch
1989 FC | |
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09-05-2009, 11:32 AM
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#53 | | F**K YOUR HEAD
Join Date: Apr 2009 Location: vancouver
Posts: 8,718
Thanked 8,153 Times in 1,251 Posts
Failed 643 Times in 181 Posts
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^boot boot boot! reminds me of a whoopee cushion
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09-07-2009, 06:22 AM
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#54 | | I *heart* Revscene.net very Muchie
Join Date: May 2001 Location: Vancouver
Posts: 3,922
Thanked 304 Times in 155 Posts
Failed 116 Times in 29 Posts
| Quote:
Originally Posted by k20a  Hm. I was thinking since 13B twin turbo has two rotor rotary, would it be true that since 20B has 3 rotor rotary, it can go TRIPLE Turbo? I read it somewhere but I'm not really sure if it's true. | They can do 2 cams per rotor so you can have a 6 cam engine 
Also, I hear that if you replace the valves & valve springs with titanium units you get 40% more power | |
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09-07-2009, 09:58 AM
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#55 | | Need to Seek Professional Help
Join Date: Oct 2006 Location: Victoria
Posts: 1,028
Thanked 436 Times in 92 Posts
Failed 292 Times in 68 Posts
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What kind of mileage do FD's get? I was seriously considering purchasing a JDM version.
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09-07-2009, 12:26 PM
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#56 | | My homepage has been set to RS
Join Date: Jun 2006 Location: Deutschland
Posts: 2,402
Thanked 900 Times in 387 Posts
Failed 395 Times in 107 Posts
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I got about 400-450k on one tank... but mine is single turbo and that's just average day to day driving with a lot of highway.
just in the city approx 350ish and if I was out for a trackday I got like 3 20 min sessions on one tank.
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09-07-2009, 06:07 PM
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#57 | | They let me be a moderator. LOL
Join Date: Oct 2004 Location: Vancouver
Posts: 9,219
Thanked 3,670 Times in 867 Posts
Failed 1,062 Times in 190 Posts
| Quote:
Originally Posted by Mancini They can do 2 cams per rotor so you can have a 6 cam engine
Also, I hear that if you replace the valves & valve springs with titanium units you get 40% more power | I will lol if someone uses this info on their friends.
hah
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09-07-2009, 06:42 PM
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#58 | | RS controls my life!
Join Date: Jan 2003 Location: Langley
Posts: 799
Thanked 284 Times in 52 Posts
Failed 3 Times in 3 Posts
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The 20b is an awesome engine as far as power is concerned. They can make a lot of power when boosted. Rotory engines have 2 downfalls.
One is reliability. They are a very sensitive to detonation. One good engine ping can crack an apex seal, requiring a rebuild. There are some good quality aftermarket apex seals available that can improve the reliability issue.
The 2nd downfall is how inefficient the engines are. They have a very high Brake Specific Fuel Consumption, meaning that they require more fuel to produce the same power a piston engine makes. Although 13b's and 20b's are 1.3L's and 2.0L's respectively, they flow 1.5-2 times the amount of air a piston engine does with the same displacement. In other words a 20b engine has the equivalent airflow of a 4L piston engine. This is good for turbo spool meaning that you can spool big turbo's quickly, but because of the poor efficiency it won't make as much power as a piston engine.
We are building 2 cars right now with 20b engines. One is a FD RX-7 with a streetport running a GT42R Turbo with individual Blaster Coils, Haltech Platinum EMS, and Custom Air to Water Intercooler.
The other is a Stock 20b swapped into a FC RX-7.
I'll post some Dyno #'s as soon as we get them on the dyno
__________________
S14 240SX: 2JZ swap/w BorgWarner S366 Turbo/hks264's/Haltech E11 / 626rwhp and 523rwtq @24 psi
Shawn
Last edited by Muskys SS; 09-07-2009 at 06:54 PM.
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09-08-2009, 10:38 AM
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#59 | | What hasn't Killed me, has made me more tolerant of RS!
Join Date: Oct 2007 Location: Comox valley
Posts: 187
Thanked 9 Times in 4 Posts
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I know some people have built r26b's by combining 2 13b's together or having a 20b and adding another rotor housing rotor..etc, but what about a 40B, i wonder how difficult that would be to build. Maybe by combining 2 20b's making it a 6rotor... just think of the possibilities.
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09-08-2009, 10:46 AM
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#60 | | RS.net, helping ugly ppl have sex since 2001
Join Date: Sep 2008 Location: Vancouver
Posts: 8,858
Thanked 2,420 Times in 669 Posts
Failed 530 Times in 136 Posts
| Quote:
Originally Posted by acidpaint I know some people have built r26b's by combining 2 13b's together or having a 20b and adding another rotor housing rotor..etc, but what about a 40B, i wonder how difficult that would be to build. Maybe by combining 2 20b's making it a 6rotor... just think of the possibilities. | You know what?? Combine two 40b would make 80b! OMGWTFBBQ
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09-08-2009, 11:22 AM
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#61 | | Banned (BBM)
Join Date: Jul 2004 Location: Vancouver
Posts: 16,142
Thanked 627 Times in 368 Posts
Failed 1,106 Times in 390 Posts
| Quote:
Originally Posted by Muskys SS The 20b is an awesome engine as far as power is concerned. They can make a lot of power when boosted. Rotory engines have 2 downfalls.
One is reliability. They are a very sensitive to detonation. One good engine ping can crack an apex seal, requiring a rebuild. There are some good quality aftermarket apex seals available that can improve the reliability issue.
The 2nd downfall is how inefficient the engines are. They have a very high Brake Specific Fuel Consumption, meaning that they require more fuel to produce the same power a piston engine makes. Although 13b's and 20b's are 1.3L's and 2.0L's respectively, they flow 1.5-2 times the amount of air a piston engine does with the same displacement. In other words a 20b engine has the equivalent airflow of a 4L piston engine. This is good for turbo spool meaning that you can spool big turbo's quickly, but because of the poor efficiency it won't make as much power as a piston engine.
We are building 2 cars right now with 20b engines. One is a FD RX-7 with a streetport running a GT42R Turbo with individual Blaster Coils, Haltech Platinum EMS, and Custom Air to Water Intercooler.
The other is a Stock 20b swapped into a FC RX-7.
I'll post some Dyno #'s as soon as we get them on the dyno | and the final questoin is, is rotary really superior than piston engines?
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09-08-2009, 11:37 AM
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#62 | | I Will not Admit my Addiction to RS
Join Date: Jan 2005 Location: Japan
Posts: 577
Thanked 54 Times in 11 Posts
Failed 18 Times in 5 Posts
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In theory, yes. in practice, not necessarily.
Lots of love for rotary engines though. My FC was my favorite car I've ever had.
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09-08-2009, 11:50 PM
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#63 | | RS controls my life!
Join Date: Jan 2003 Location: Langley
Posts: 799
Thanked 284 Times in 52 Posts
Failed 3 Times in 3 Posts
| Quote:
Originally Posted by Mugen EvOlutioN and the final questoin is, is rotary really superior than piston engines? | Definately not superior. If that were the case you would see them on most cars built today.
__________________
S14 240SX: 2JZ swap/w BorgWarner S366 Turbo/hks264's/Haltech E11 / 626rwhp and 523rwtq @24 psi
Shawn | |
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09-10-2009, 06:18 AM
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#64 | | Banned By Establishment
Join Date: Aug 2005 Location: Burnaby
Posts: 2
Thanked 266 Times in 124 Posts
Failed 450 Times in 132 Posts
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Originally Posted by ilvtofu I rofl'ed | I don't care enough to know about it lol...
all i know is some kid has an FD in MT3/3DX called 787B...
the reading kids do these days... maybe if they crawled underneath a fucking car, and maybe (if a dsm) into it... they'd learn something other than
"wahh diu... GT-ARLOOO ar... ho fai in straight worrr~~~ but that 7jai's gonna rape it in the corners!"
:IDL
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