@@oscarjsm24 flywheel is holding up fine. It’s about 20 thousand miles on this one. Replaced it end of 2020. I wanna say the Act SS clutch and flywheel set up is sketchy. The flywheel on that first combo didn’t last long
My question is will these be safe to use on a stock k24/ 7th gen Accord that is equipped with a exedy lightweight flywheel, true cold air intake, and a tsx throttle body and how much more power will I see/feel over the stock 166hbp/160 torque.
To the best of my knowledge, no one has actually put the smaller K20 pulley through any kind of OEM level validation on the K24, so most answers are probably going to be uneducated with no real data to back them up. I could see 2 potential engine related issues though. First, the water pump won't spin as fast, reducing cooling. Second, if the K20 damper doesn't effectively dampen the K24's vibrations, crankshaft and bearing damage could result. The dampening characteristics of a crank pulley are specifically tuned to that engine and the K24 having a longer stroke than the K20 likely changes the tuning of its pulley, but whether the K20 pulley could cause problems in the long term is impossible to accurately answer without extensive testing and/or access to Honda's engineering data. If that was my Accord and increased power with good reliability was my goal, personally I'd leave the crank pulley alone and put the 06-08 TSX K24A2 in it. You'll get dramatic gains with OEM reliability as long as you keep the engine reasonably stock.
K24s and the high performance k20s have bullet proof cranks, i always use the same pully that cone with the crank if i can since it also helps with balancing the crank, if i cant ill use an ati damper,
Depending on the application, maybe. Less coolant flow means less cooling potential and more possibility of developing hot spots in the head and block. I have no first hand experience with the small pulley, but I do know that Honda used the bigger pulley on the K24 for a reason. Whether that reason was to help the alternator keep up better at idle, improve AC cooling, more effectively cool the larger engine in a heavier vehicle, a combination of all these factors, etc, so you'd have to do your own testing to know for sure.
Often a slow steady flow is better for exchanging the heat into the coolant and think of it this way the original engineer’s design the system with mostly low speed driving in mind and an engine that’s modified is likely to be used at higher rpm more often and a smaller pulley can improve cooling and prevent pump cavitation in some extreme’s
@@needmoreboost6369 You are mostly correct. Assuming all else is equal and no cavitation, more coolant flow means more cooling potential. At higher than stock RPM, cavitation can certainly become a problem and slowing the pump down can help save power and prevent cavitation at the expense of low speed cooling. Remember that family car cooling systems must be designed to adequately cool the engine under a worst case scenario such as an incompetent driver towing a trailer up long, steep grades in high gear at a low RPM and the throttle wide open. In such a scenario, the engine will be producing a ton of heat with the water pump spinning slowly. Since the pump has to be sized for a worst case scenario, it will be way oversized almost all the time. This is why electric water pumps are becoming more and more common- they can match the coolant flow rate to the current conditions instead of running at maximum flow all the time when not needed, saving power and increasing fuel efficiency. Note that this is not a suggestion to convert your K20/K24 to an electric water pump.
Base RSX P/N (13810-RRA-A02) shows cross reference for TSX base as well, must be a larger diameter pulley? RSX Type S and 06-11 SI shows same P/N, (13810-RRB-A01) are these the ones you are referencing in the video?
Good full Intake (hot air sucking short ram if you want even quicker throttle response) and full exhaust upgrade and you will have a quicker throttle besides the lag if you have a etb which can be fixed with a tune.
We need to do a dyno test to get the numbers for ourselves with just the pulleys as the difference. It's hard to say how much you'll feel it in a CRV since it is heavier than the Civics, CRXs and Integras we usually use them in. In the lighter cars we do feel it.
For a daily driver, it's probably not worth the less effective AC and possibly engine cooling, reduced alternator output, etc. The alternator won't necessarily consume less engine power just because it's spinning slower either, depending on its efficiency curve.
What would be the approximate HP gains with that smaller pulley? I have a 1989 CRX with a K24A2 not sure if the pulley has been swapped, is there a diameter of the smaller K20 pulley?
@@VTECAcademy Thank you. So I can put it on my CRX without any problems? I'm trying to make the engine safe. I already installed the Type S oil cooler and I'm getting the pump as well. Maybe a 40° VTC.
@@VTECAcademy First I have to finish this wiring!!! 🤯 I'm trying to hook up sensors and have the gauges work. I installed Rywire tucked harness and Hybrid Racing conversion harness which is plug and play but there are still other wires for CEL, VSS, ECU power, etc.
Indeed. If you modify your CR, swap pumps w/o balancer or use ligthweigth flywheel, you wil get a nice headache! Im saving few 💵 toy buy a Fluidamper and install on my 9gen Si
@@VTECAcademy base model RSX (K20A3) pulley is the exact same size as K24A2 I know from first hand experience. At least in my case when swapping over from ‘08 TSX to ‘06 RSX Base motor.
I daily drive a 315 hp tuned K20A2 without AC or power steering and a lightweight pulley. The car revs are violent even in a 3rd gear pull. 💪💪
What clutch are you running boss?
@@oscarjsm24 Stage 2 ACT, Fidanza flywheel. Stage 1s can't handle all the torque
@@Charmer4856 how’s the flywheel holding up. I heard mixed things about Fidanza. How many miles on the kit?
@@oscarjsm24 flywheel is holding up fine. It’s about 20 thousand miles on this one. Replaced it end of 2020. I wanna say the Act SS clutch and flywheel set up is sketchy. The flywheel on that first combo didn’t last long
Wish belt can i use for a k20/24 with k20 crank pulley and power steering delete pulley..want to keep ac
Glorious MCM reference
Moog and Marty, NOTICE us!! LOL
I’m running a aluminum lightweight pully made a huge difference 🏎 the door stop trick had me rolling 😂🤣😂💯💯
LMFAOOO he used it as a door stomp, i thought he walked out because it STINKS 😂😂
It was smokin!
the k20a2 pulley is the only one that clears my traction bar with a K24a2 swap in my Crx. no bend arm mod etc needed.
The humor is on point
Marty's "In The Bin!" sent me 🤣🤣🤣
Love learning new things and I don't even own a Honda anymore😂😂 but still work on alot
Love the new intro!
My question is will these be safe to use on a stock k24/ 7th gen Accord that is equipped with a exedy lightweight flywheel, true cold air intake, and a tsx throttle body and how much more power will I see/feel over the stock 166hbp/160 torque.
To the best of my knowledge, no one has actually put the smaller K20 pulley through any kind of OEM level validation on the K24, so most answers are probably going to be uneducated with no real data to back them up. I could see 2 potential engine related issues though. First, the water pump won't spin as fast, reducing cooling. Second, if the K20 damper doesn't effectively dampen the K24's vibrations, crankshaft and bearing damage could result. The dampening characteristics of a crank pulley are specifically tuned to that engine and the K24 having a longer stroke than the K20 likely changes the tuning of its pulley, but whether the K20 pulley could cause problems in the long term is impossible to accurately answer without extensive testing and/or access to Honda's engineering data. If that was my Accord and increased power with good reliability was my goal, personally I'd leave the crank pulley alone and put the 06-08 TSX K24A2 in it. You'll get dramatic gains with OEM reliability as long as you keep the engine reasonably stock.
Still trying to find a Roterex Super charger( 4+yrs) for my ek 99' facelift 1.6vti 'civic hatch uk B16-85k on clock looks like have to give up..
Great tip thanks boss..keep em comin
K24s and the high performance k20s have bullet proof cranks, i always use the same pully that cone with the crank if i can since it also helps with balancing the crank, if i cant ill use an ati damper,
K24a2 with a k20a2 pulley? If it fits my k24 I’ll do it.
Or. If your beyond stock levels. Get a super ATI damper and soak up those harmonics
Won't you potentially be more likely to overheat with a smaller pulley since the water pump isn't moving as much coolant?
Depending on the application, maybe. Less coolant flow means less cooling potential and more possibility of developing hot spots in the head and block. I have no first hand experience with the small pulley, but I do know that Honda used the bigger pulley on the K24 for a reason. Whether that reason was to help the alternator keep up better at idle, improve AC cooling, more effectively cool the larger engine in a heavier vehicle, a combination of all these factors, etc, so you'd have to do your own testing to know for sure.
I have a rbc pulley on my k24a2 qnd it charges and cools perfectly
Often a slow steady flow is better for exchanging the heat into the coolant and think of it this way the original engineer’s design the system with mostly low speed driving in mind and an engine that’s modified is likely to be used at higher rpm more often and a smaller pulley can improve cooling and prevent pump cavitation in some extreme’s
@@needmoreboost6369 You are mostly correct. Assuming all else is equal and no cavitation, more coolant flow means more cooling potential. At higher than stock RPM, cavitation can certainly become a problem and slowing the pump down can help save power and prevent cavitation at the expense of low speed cooling. Remember that family car cooling systems must be designed to adequately cool the engine under a worst case scenario such as an incompetent driver towing a trailer up long, steep grades in high gear at a low RPM and the throttle wide open. In such a scenario, the engine will be producing a ton of heat with the water pump spinning slowly. Since the pump has to be sized for a worst case scenario, it will be way oversized almost all the time. This is why electric water pumps are becoming more and more common- they can match the coolant flow rate to the current conditions instead of running at maximum flow all the time when not needed, saving power and increasing fuel efficiency. Note that this is not a suggestion to convert your K20/K24 to an electric water pump.
@@averyalexander2303 I got rid of my k20 lol I’ve got an iron gm v6 turbo now, definitely not worried about parasitic loss on this one!
Base RSX P/N (13810-RRA-A02) shows cross reference for TSX base as well, must be a larger diameter pulley? RSX Type S and 06-11 SI shows same P/N, (13810-RRB-A01) are these the ones you are referencing in the video?
Yeah, that's the mid sized pulley.
fucking love this guy
I have a unorthodox raceing one hopefully throws extra pawer
What belts are you suppose to use if you put the k20 pulley on the k24? Or is it the same?
We made a video on that. ruclips.net/video/HLJTvFmSKVI/видео.html LFG!!!
Thank you!!!! ❤
Can you guys do a video on mods that sharpen throttle response and feel for us older guys who don’t care about gaining 2whp?
Good full Intake (hot air sucking short ram if you want even quicker throttle response) and full exhaust upgrade and you will have a quicker throttle besides the lag if you have a etb which can be fixed with a tune.
@@KDBHonda256 is it the longer the intake the worse the response?
Sizing should be K20 Type R/K20Z1 < K20A2/K20Z3 < K20A3/K24 < K23.
The middle ones are door stops.
Is the K20 pulley the same for the baae RSX and the Type S?
No. The K20A3 pulley is the same as a K24A2 pulley, I know from first hand experience. I would imagine the K20A2/Z3 has a smaller pulley.
Question I have a k24z3 if I use the k20 crank pulley what belt should I use k20 or k24 belt
I had the same question.
Would the K20 pulley on a K24z3 engine mess with cranking amps. And would I need to retune the engine after this install?
which is the best for k20z4, can you tell me the part number? thanks
Hi i hace a question, what is the best way to go if i have a k20z3, put a k24 block or buy a complete k24a2?
I have a k24 in my crv 2005. If I add the k20 pulley how much more power would I make. Would it be noticable? Would it be worth it?
We need to do a dyno test to get the numbers for ourselves with just the pulleys as the difference. It's hard to say how much you'll feel it in a CRV since it is heavier than the Civics, CRXs and Integras we usually use them in. In the lighter cars we do feel it.
@@VTECAcademy ok thanks
@@VTECAcademywhat about for a tsx with header decat intake flash? could expect 5hp? 10? less?
what happens if you put that K24 pulley on a K20z3 motor? will it decrease HP?
My name is Mike I have a 05 accord with swapped k24 rbb engine from Japan same engine as accord euro
Let me go order a k20 pulley for my rdx 😅
what about light weight stock size pulley on the k engine?.. love that mod on j series.. but heard it's a potential problem on k?
Not as much benefit and you lose the dampening.
What pulley to use with a turbo set up
Would a pulley from a k20a1 and a3 work as well?
My question is for daily driving is this even worth it? I mean, is the parasitic loss noticeable with Dimming of the lights stereo?
For a daily driver, it's probably not worth the less effective AC and possibly engine cooling, reduced alternator output, etc. The alternator won't necessarily consume less engine power just because it's spinning slower either, depending on its efficiency curve.
@@averyalexander2303 I guess I’ll I’ll find out
What would be the approximate HP gains with that smaller pulley? I have a 1989 CRX with a K24A2 not sure if the pulley has been swapped, is there a diameter of the smaller K20 pulley?
Not sure the diameter, but it's just a few hp difference. One of those 'things that add up' when you do a bunch of these mods.
@@nobodynoone2500 I'm gonna need more of these simple mods?
The smallest OEM K series pulley is the K20 Type R pulley at 5.115" diameter.
@@VTECAcademy Thank you. So I can put it on my CRX without any problems? I'm trying to make the engine safe. I already installed the Type S oil cooler and I'm getting the pump as well. Maybe a 40° VTC.
@@VTECAcademy First I have to finish this wiring!!! 🤯 I'm trying to hook up sensors and have the gauges work. I installed Rywire tucked harness and Hybrid Racing conversion harness which is plug and play but there are still other wires for CEL, VSS, ECU power, etc.
Beware undampened crank pulleys, the harmonics will destroy your oil pump.
Indeed. If you modify your CR, swap pumps w/o balancer or use ligthweigth flywheel, you wil get a nice headache! Im saving few 💵 toy buy a Fluidamper and install on my 9gen Si
All the OEM pulleys are dampened, so you're golden with one.
What about an aftermarket lightweight pulley like nst or ralco rz?
@@k24in31 We haven't used them ourselves, but other people seem to really like them.
@@edgarfernandez4666 Wrong I been running a 8 pound flywheel on my K20Z3 for 4 years no problem!!!!
My k24 has k23 on it 🤔
I threw away 2 pulley's 😭😭😭😭
I didn't know.
Random fyi thanks man…
What do K24a pulleys and a high fiber diet have in common 😂😂😂😂😂
Is it me or was he smoking in the bathroom lol 💨
Dude, you’re not supposed to take bong hits in the bathroom at work…
😅 It was too much coffee! Yeah, coffee.
😑.. the secret is out
It's ok, people will still overlook this.
Lmaoooo
Ayoo🤣🤣🤣🤣
Can I use the base model rsx pulley on k24a2?
Yes.
Which one I would use for turbo ?
@@VTECAcademy base model RSX (K20A3) pulley is the exact same size as K24A2 I know from first hand experience. At least in my case when swapping over from ‘08 TSX to ‘06 RSX Base motor.