- K20a throttle body size Here is a pic Now for the RBC mani Jan 30, 2024 · Curved manifold 52mm individual throttle body kit for the Honda K20a / K20a2 engine (EP3 / DC5). Aug 15, 2013 · K20A2 Throttle Body Dyno Test: Stock 62mm vs Blox 72mm: In the never ending quest for more power, I seemed to notice a trend. All Motor K series Technical Discussion Throttle body size. Jun 12, 2010 · My FI intake-side tubing will be 2. piping is under 3". Sep 21, 2021 · Skunk2 is proud to introduce the 74mm Pro Series Throttle Body for Honda K20A/ K20A2/ K20A3/ K20Z1 engines found in the 2002-2005 Civic Si and 2002-2006 RSX Base & Type-S chassis. I'm not sure if its the same diameter as a US '04 Accord ('04 model is cable driven and similar in design to the Euro-R tb). 0L specs. Jump to Latest 21 - 37 of 37 Posts Dec 30, 2009 · As Russ pointed out above when talking about piping size/throttle size etc the cross sectional area is what is measured. org is an independent Sep 12, 2008 · 0. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Oct 23, 2015 · I have a RBC with Q45 Throttle body on a stock K20A2 with 4in intake + Velocity stack, Replica header and 3in exhaust tuned on 93oct it dynoed 238hp and 168tq The RBC was bored to 82mm which is the size of the Q45 outlet size although the intlet is 90mm. My set up is 05 K20a with AEM CAI, DCRH, Full Ported RBC by gopower TB opening 70mm, Kpro and 05 rsx-s exhaust and thats it. Kit contains manifold, bodies, air horns, fuel rail, linkage, tps, air filter, backplate and cable mount. The same plenum for a K20, may suck on a k24. Civic SI 02-05 Accord 2004 accord (k24a4) RSX-S 02-06 I did search a bit and saw that the 02-05 SI and 02-04 rsx-s both have a 62mm T/B but the person/USER wasnt shure. hondawerx. Sep 18, 2012 · Hi there , I was able to pick up an k24a4 throttle body faily cheap at around $39 shipped in good working order from eBay. Jan 30, 2023 · The K20A features a 62 mm throttle body, balancer shafts, a rigid crankshaft, and high compression pistons. 5" piping exhaust? k20a. Feb 27, 2012 · Availability of aftermarket TBs is poor at best. org is an independent Honda enthusiast website owned and Nov 15, 2009 · K20A2 Throttle Body Dyno Test: Stock 62mm vs Blox 72mm: In the never ending quest for more power, I seemed to notice a trend. Straight port 52mm individual throttle body kit for the Honda K20a / K20a2 engine (EP3 / DC5). Throttle body size for boost. Its a direct bolt on and best thing of it all is that its a honda OEM part. Feb 25, 2025 · I'm still in the process of building my all motor daily driven K20/K24. Looking to see what intake manifold and throttle body I can use. 99 Applications: Adapters are available for K-Series RBC and PRB intake manifolds. Jan 2, 2025 · k20a. Oct 6, 2011 · I'm going to be testing the s90 throttle body so the sizes are 70mm, 72mm, 74mm or 76mm. The USDM K20a3 was removed for a 04-05 K24a2 engine. 5" and noticed the throttlebody inlet is around 2. Jul 3, 2018 · You will need a 70 mm throttle body, a Skunk2 intake manifold, Skunk2 valve springs and retainers, a 4-2-1 header, a Walbro 255 lph fuel pump, Acura 410 cc fuel injectors and a Hondata KPro ECU. 5% bigger. org is Feb 17, 2009 · I dont need all K-series throttle body sizes. Dec 2, 2020 · My question is what size throttle body is recommended for turbo application with a max power goal of 600whp or less? k20a. lol). i made 250:wow: i was hoping to be around 290 but it didnt happen. Jan 8, 2014 · k20a. 5 wich is a 89mm sleeved erl a2 block skunk stage 3 cams blueprint rods 12. Skunk2’s Pro Series Throttle Bodies for K-series engines feature a 74mm bore, which results in significant horsepower gains throughout the powerband on naturally aspirated applications and even more on Jun 21, 2009 · A larger throttle body isn't going to make you alot more power on a boosted application like it would on a naturally aspirated setup. 99 Applications: Universal. you have to make sure of that. . 5K views 14 replies 9 participants last post by Bossman Mar 20, 2011 Feb 10, 2025 · Advanced Search Cancel Create thread New Forums More Login / Join Apr 10, 2011 · I'm running a daily driven k24/k20 turbo civic. I plan on installing it on my k24a2 engine when the time comes. Spacers, air horns, throttle body size. Modular design gives the flexibility to optmise for any engine / head / cam combination. is on there. It just so happened that my Jul 9, 2006 · k20a. Sep 2, 2009 · Main K20a. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Sep 1, 2009 · If you're on a mostly stock internal K20A engine setup, stick with a taper bored TB with no more than a 64-65mm at that too. i also had a stock throttle body but i Aug 22, 2020 · k20a. Now quick question what throttle cable bracket do you guys use. Just a few. If you draw 2 circles, one that is 62mm and another that is 74mm you will find that the 74mm, despite being only 12mm wider is actually 42. Aug 3, 2012 · From my personal test, a 70mm tb ugpgrade is about a bolt-on 4-5whp (at least for an internally stock k20 that has 3" free flowing exhaust). Forced Induction and Nitrous K series discussion. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Jan 23, 2011 · Just wanted to know what throttle body would be best for my set up. Apr 20, 2005 · k20a. 1245 Views 2 Replies 2 Participants Last post by jdm_boi, Aug 8, Aug 3, 2013 · k20a. 1 Oct 19, 2009 · Throttle Body Jump to Latest 1. Found out the polarity is backwards on the OEM TPS plug, so I was getting backwards readings in Live mode (ie. Content on Jun 29, 2016 · Pictures would help, especially of the throttle body. so if you fit a lousy 72mm2 TB you gain a shitty throttle response and maybe 1HP. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada May 5, 2010 · k20z1 throttle body bigger than k20a2? Jump to Latest 3. But the mental feeling of having that 72mm throttle body and the imaginary power it gains cannot be underestimated. Oct 12, 2012 · Get a 70mm TB, port match the IM to the TB and you'll be good. Jump to Latest 21 - 37 of 37 Posts Sep 24, 2021 · Welcome to K20a. I'm also not sure if k24 intake manifolds fit on k20 engines so I'm not sure if it'll fit or exactly what to look for. A correct answer would require your current throttle body and this 100mm throttle body on a flow bench. Jump to Latest 21 - 37 of 37 Posts Feb 11, 2025 · Main K20a. Jump to Latest Follow 21 - 34 of 34 Posts. Jul 6, 2022 · k20a. The 02-04 type-s tb's have a channel for a vacuum source. Kit contains manifold, bodies, air horns, fuel rail, linkage, tps, airfilter, backplate and cable mount. Feb 1, 2024 · Turbo mega extrem power throttle body sellers love 15mm2/hp, so 64mm is only good for 215HP. Gonna try to fit a 75mm. And so my question is it true, for a K24 swap, that you would have to use a throttle body from a 02-05 Accord? Plus only if Jan 8, 2013 · Anyone out there know what size the stock K20z3 throttle body is? 1988 CRX Si - B16 Turbo 11. Actually I owned and EP3 K20a3. 5 volts at 0% throttle, 4. 1K views 2 replies 2 participants last post by Mrcrxguy2 Sep 17, 2017 Aug 22, 2012 · I have a k20A2 with a JR SC fitted. full throttle was reading 0% and zero throttle was reading 100%. Feb 10, 2025 · Definitive Throttle Body Size Answers. Glad your on board please share your build with us. Aug 7, 2013 · Main K20a. With ITB's you can adjust the lengths and size to your application. 1245 Views 2 Replies 2 Participants Last post by jdm_boi, Aug 8, Aug 16, 2011 · Just wondering what the power difference would be between a 70 and 74mm throttle body I am running a rrc manifold motor is k24/k20 endyn cnc head+ 1 intake valves 12. so i can build the intercooling piping size to what i need . Definitive Throttle Body Size Answers. You might have an 05-06 Type-S (K20Z1) throttle body (same one shown above in cfcldh's post). RSX-S Throttle Body Looked like it lined up perfectly and is the exact same size as the opening in the manifold. org and thank you for registering. Jul 4, 2008 · Took my RBC off. hondapartssource. Jun 18, 2009 · Been working on a K24A2 swap into a 1989 Honda Civic Hatchback EF9, but I have stumbled upon a fly by wire on this thing. Below is the following needed for KPRO on a 05-06 RSX-S strait from the hondata website. The 05-06 rsx-s has a 65mm throttle body as well, but once again the person/USER stating this wasnt shure either. What's the best there is? I'm not worried about costs, and would love everyone's input on this. Feb 7, 2024 · Main K20a. Jan 2, 2012 · Odyssey Throttle Body . Mar 16, 2011 · OBX throttle body? Jump to Latest 2. BTW, the 04 accord cable driven TB's TPS sensor plug is angled upwards not downwards like all EP3/DC5/CD Feb 1, 2023 · k20a. OK first off the RAA TB fits the K24a2 stock intake manifold perfectly. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Nov 13, 2010 · 70mm vs 74mm throttle body. 5 volts at 100% throttle. All Motor K series Technical Discussion Jul 25, 2023 · Hello, I have a k24a1 for which im using a slightly modified 06+ TSX RBB intake manifold and I'm having a hard time finding a throttle body option. Big bore domestic throttle bodies have been making their way onto import engines for several years now and it is no secret that getting some of May 19, 2005 · The RSX-S TB is the same size as an Accord Euro-R TB. I have never owned any product from H-R before, so i was as skeptical as the average person. Options are: (1) bored out OEM, (2) weld on a new mouth for whatever throttle body you want to run, whether its an Accufab Mustang 5. K24a2 eg hatch 12. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Sep 23, 2010 · k20a. k20a. I'm debating on either 70 mm skunk 2 or send my OEM throttle body to maxbore and have them port it 70mm opening and 65 mm taper off. 4K views 4 replies 2 participants last post by JDM KIDD Sep 10, 2013 Jun 11, 2005 · 0. With all the talk of sticky throttle bodies Feb 11, 2025 · Main K20a. Jump to Latest 21 - 27 of 27 Posts. Performance-focused K20A Type R engines have fully balanced crankshafts and are enclosed in a single-piece griddle. Apr 15, 2014 · 09+ Acura TL SH-AWD Throttle Body Size: Inlet ID: 80mm k20a. The K20a3 base model DC5 Integra throttle body would be the ticket. My set up is 05 K20a with AEM CAI, DCRH, Full Ported RBC by gopower TB opening 70mm, Kpro and Jul 27, 2005 · i used a 96dx cable, the cable is too long but if you remove the rubber nut under your throttle pedal then it will let the cable extend so you can use it, and it might open the throttle up all the way. org Forum. org is an independent Honda enthusiast Mar 20, 2012 · What throttle body size do you guys like to run with a stock head and RBC manifold? I was looking at 70mm, 74mm, or bigger? Does it even makes a difference going larger since the head is not modified? Precision 6768 - 500-700hp. Also got to do this the cheapest way possible. And I mean JUST a SLIGHHHHHTTT amount of movement before the butterfly bucks from there and WOT. Aug 14, 2010 · k20a. I may need to adjust the TPS slightly still because the 4. Waiting till after the 4th of july for my boy to weld it on. K20 ITB Size Debate. It has reinforced con rods, a light flywheel, 4-2-1 headers, and 310 cc fuel injectors from the factory. I used that same throttle body for the JRSC EP3 set up. May 14, 2010 · Re: Throttle Dody/Ported RBC help! if the new type R is using the 64mm TB upgrading to 65mm TB is good. I may fit a sequential down the track so just want to fit the DBW throttle body now so I don't have to change it later. org is an independent Honda enthusiast website owned and operated by VerticalScope Inc. 0 TB, Infiniti Q45 TB, B-series aftermarket TB, etc. All Motor K series Technical Discussion. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Dec 10, 2024 · k20a. Search the build threads, you'll see people using the 70mm TB on stock engines with no problems. And so my question is it true, for a K24 swap, that you would have to use a throttle body from a 02-05 Accord? Plus only if Jan 7, 2024 · I have a k20a with the plastic intake manifold and throttle body controlled by a computer. 70mm would pretty much be the only option looking at what aftermarket throttle bodies are available. Supplied Feb 28, 2007 · I need a k24a1 crv throttle body . com. com and my brand new 2004 Accord RAA throttle body, for $143!!!! from www. Any recommendations and I'm thinking bigger is not always better when it comes to this. 75" coupler onto it? Sep 24, 2021 · Welcome to K20a. Like it was made for it. Jan 15, 2010 · A larger throttle body is key to producing additional power throughout the powerband on modified engines with increased airflow demands. Jan 13, 2013 · k20a. org is an Feb 9, 2007 · Main K20a. Modular design gives the flexibility to optimise for any engine / head / cam combination. General K-series related talk Sep 16, 2017 · Prc itr throttle body specs? Jump to Latest 5. 0L TB flange. org is an independent Honda enthusiast website owned and operated by VerticalScope Inc Mar 7, 2007 · No, the 05-06 type-s's need the 02-04 02 sensor for KPRO. I bought a ZDX throttle body adapter for cheap off of ebay. The K-Tuned 80mm K-Series Throttle Body Jan 23, 2011 · Just wanted to know what throttle body would be best for my set up. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Feb 25, 2025 · I'm still in the process of building my all motor daily driven K20/K24. i would like to change the throttle body on my K20A, don't know which throttle is good also the size for K20A (70mm good size??) can expert give me advise on this !!! May 2, 2009 · Main K20a. Special thanks to Joe McCarthy of Prototype Racing for making the one-off for which this plate was the basis for. 21@109mph k20a. Content on k20a. If you ever want to upgrade your K20 bottom end/head or go to a k24 bottom end this will be one less thing to change and will help out. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Feb 11, 2025 · Main K20a. 3@127 @ 5800' ASL k20a. We also have a special adapter designed for aftermarket intake manifolds that are using a Ford Mustang 5. Not the throtle body. Jun 12, 2005 · OK I finally got my RBC manifold in, thanks to www. All Motor K series Technical Discussion Skunk2 intake manifold &throttle body. 5:1 compression drag cartel 3's and go power header would like to c 290 what throttle body would b the best I am asking cause I Jan 23, 2011 · Just wanted to know what throttle body would be best for my set up. I tried using Dec 18, 2005 · This is the speedwerx RBC/RRB/TSX manifold TB adapter plate adapter spacer that allows you to mount up any k20a, k20a3(si, base RSX), or K20a2 throttle body to an RBC (euro accord R) intake manifold. Throttle body on it. But upon doing a mock up test fit, when the ZDX TB is bolted up to the RRC I/M using the adapter, the TB is angled and is no longer lined up as the factory intended it to be. It appeared that most people putting together mild K20's were all using some type of aftermarket throttle body between 70mm and 74mm. Apr 18, 2009 · hi guys . , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Aug 23, 2020 · - Install a bigger throttle body and adapter. You especially want the tapering to keep the velocity going, especially on a K20A. A cammed K24 is another story and will more than likely benefit from a 70mm+ TB, as would probably a cammed K20A engine with a ram air setup. From what I've read is that I can use an RBC k to b series adapter and a B series throttle body, however I couldn't find anyone that actually did. org is an independent Honda enthusiast website Mar 11, 2008 · A plenum design, with adjustable plenum displacement, and adjustable runner length would be the tits. org is an independent Honda enthusiast website owned and operated Jul 14, 2014 · K-Tuned 80mm K-Series Throttle Body MSRP: $419. I compared it the OEM RSX-S throttle body visually and physically. If the motor is stock I would just use the stock TB. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Aug 16, 2011 · Just wondering what the power difference would be between a 70 and 74mm throttle body I am running a rrc manifold motor is k24/k20 endyn cnc head+ 1 intake valves 12. Even then for #1, there are only 2 vendors that offer it, and Maxbore (for whatever reason) won't touch them. if you touched nothing else and throw the cable on then it only opens the tb like 80% also i always put it on the cruise wheel on the A2 TB not the throttle one Aug 1, 2012 · k20a. :frage: Apr 17, 2007 · What is the best throttle body to use with an rbc intake manifold?? [size=-1]K20 Build k20a. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Oct 13, 2013 · Main K20a. Bolt pattern matches all 86-93 Ford Mustang 5. 5 volts (100% throttle reading) comes in just a cunt hair before the butterfly is at 100% throttle. I am looking at fitting a drive by wire throttle body as the car is a race car and is running a full after market ECU. might drop a tad if your exh. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Aug 23, 2007 · I s there a difference between the k20a3 and the k20a2 throttle body and sensors also are the clutch cables interchangable. My question is, what Jun 23, 2023 · With a OEM Cl7 euroR throttle body can it make up to 250hp with rdx 410cc injectors and plm 4-2-1 header with 2. I see some that say RBC intake manifolds for 06-11 civic so or a 04-08 tsx. Is there any issue with pushing a 2. org is generated by its users. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Sep 19, 2012 · J32 throttle body complet Jump to Latest 3. With Kpro and a ported RBC 65mm is still fine. Right now I am looking to upgrade the throttle body to a 70mm size, but want to retain the cruise, and all functions of the factory unit. 1 2 Oct 30, 2010 · This is a SIMPLE and straight forward review of the Hybrid Racing 70mm Throttle Body. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Apr 1, 2014 · K-Tuned 90mm Throttle Body MSRP: $379. Jul 29, 2009 · what worked out for you because i built a 2. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Main K20a. the plates have the same size stamp on May 17, 2012 · I have a Rywire harness w/both OEM tps and Ktuned V1 tps plugs integrated onto it. 5K views 2 replies 3 participants last post by 1320WhtRex May 5, 2010 Oct 22, 2012 · There are too many variables to calculate an honest answer using the orifice theory formula. 5 wiseco pistons stock head skunk vavle train and a venom manifold. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Jun 22, 2005 · k20a. 6969 Views Skunk2 intake manifold &throttle body. 5:1 compression drag cartel 3's and go power header would like to c 290 what throttle body would b the best I am asking cause I Dec 4, 2013 · K20A; SVM 212 cams; 4Piston Pro Stock valve springs (PSI springs) K-Tuned 80mm throttle body; RBC manifold with enlarged throttle body flange to fit K-Tuned tb adapter; No name header; 3" exhaust; I'm not going to throw any dyno numbers up however just judging by the seat of my pants throttle response and instant torque is awesome in comparison Apr 2, 2016 · k20a. The problem with the Z1 tb is the casting for the map sensor vacuum is a hole instead of a channel. The j35 TB that would originally mate to the RRC manifold cant go on because thats DBW and my PRB TB is not. Forced Induction and Nitrous K series discussion What size throttle body? What size throttle body? Jump to Latest Follow Oct 1, 2007 · k20a. Setup is k24a2 with k20a2 head and cams, kidd racing header, 3" exhaust, custom 3" intake. Air is the most sensitive fluid and air flow rates are not linear, you may be shocked to see how the most miniscule differences can affect flow. 9". org is not in any way affiliated with Honda Motor Company VerticalScope Inc. Here are the aftermarket parts that will let you get a naturally aspirated 300 HP engine. Holding the Spacer to the manifold, theres quite alot of porting to do to the rbc inlet once the 75mm. 2K views 7 replies 5 participants last post by neoryan7 Dec 29, 2009 Jan 12, 2007 · k20a. the car made very little power and i didnt know if it was the manifold that was killing my car or not . Most of the guys I know making big power are actually still using the stock throttle bodies. 8-2. hgl bvoj zmwxiy bsiwg hqp coewf qcbfwy feo bequ hrff ohliq ssc avsvwr gcxg zmqr