Hott Boy's Garage - Ep. 12 - Honda TRX450R: Splitting Engine Cases & Crank Bearing Replacement
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- Опубликовано: 9 июл 2024
- Welcome to Hott Boy's Garage - a channel where I aim to create some helpful content around stuff that interests me. Episode 12 is a long and detailed video that shows how to split the cases, remove and inspect the transmission and crankshaft, replace the crank bearings and seals, and put everything back together on a Honda TRX450R ATV engine. See the video outline below if you'd like to jump to certain sections of the video you might be interested in. Make sure you subscribe to the channel and stay tuned for content.
Instagram: / hottboysracing
Facebook: / hott-boys-racing-15915...
Web site: www.garyhott.com
Video outline and timestamps:
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Intro - 0:00
Tools/Parts Needed - 1:43
Engine Removal From Frame - 4:42
This Engines Differences - 6:21
Left Outer Cover Removal - 7:21
Flywheel Removal - 7:43
Right Outer Cover Removal - 8:45
Clutch Assembly Removal - 9:25
Counter-Balancer & Crank Gears Removal - 11:09
Shifter/Ratchet Assembly Removal - 12:46
Cam/Carrier Removal - 13:45
Head & Cylinder Removal - 15:40
Cam Chain & Oil Pickup Removal - 17:00
Separating Inner Cases - 17:49
Transmission Removal - 19:02
Oil Pump Removal - 19:46
Crank/Left Bearing Removal - 19:52
Separating Crank/Left Bearing - 21:20
Right Crank Bearing Removal - 22:36
Transmission Disassembly & Inspection - 23:09
Crank, Piston, & Case Inspection - 27:06
Left Crank Bearing Install onto Crank - 29:10
Right Crank Bearing Install into Case - 30:06
Crank/Left Bearing Install into Case - 31:53
Transmission Install - 32:44
Oil Pump and Center Gasket Install - 35:30
Mating Cases Back Together - 36:48
Crank Seals Install - 37:25
Shifter/Ratcheting Assembly Install - 38:20
Head & Cylinder Install - 41:03
Left Outer Parts Install - 43:40
Counter-Balancer & Crank Gears Install - 44:35
Clutch Assembly Install - 46:18
Right Outer Cover Install - 48:16
Cam Chain and Flywheel Install - 48:44
Left Outer Cover Install - 49:51
Cam/Carrier Install & Setting Timing - 51:03
Closing - 54:38
Other Hott Boys Garage Video Links:
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Valve Adjustment How-To: www.garyhott.com/tech-valvead...
Detailed Clutch Assembly Inspection: • Hott Boy's Garage - Ep...
Cam Degree How-To: • Hott Boy's Garage - Ep...
Setting Deck Height How-To: • Hott Boys Garage - Ep....
Piston To Valve and Radial Clearance How-To: • Hott Boy's Garage - Ep...
Product Links:
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Tekton 1/2" Drive SAE Impact Socket Set: www.amazon.com/gp/product/B00...
Counter-Balancer Nut Spanner Socket: www.amazon.com/gp/product/B00...
Motion Pro Gear Jammer: www.rockymountainatvmc.com/pa...
Tusk Flywheel Puller: www.rockymountainatvmc.com/pa...
Motion Pro Flywheel Puller: www.rockymountainatvmc.com/pa...
Motorsport Products Engine Stand: www.rockymountainatvmc.com/pa...
Tusk Clutch Hub Holding Tool: www.rockymountainatvmc.com/pa...
Tusk Bearing Puller: www.rockymountainatvmc.com/pa...
Bearing Driver Set: www.amazon.com/Shankly-Bushin...
Milwaukee Impact 2767-20: www.homedepot.com/p/Milwaukee...
Craftsman 3/8" Drive Torque Wrench: www.lowes.com/pd/CRAFTSMAN-3-...
Harbor Freight Shop Press: www.harborfreight.com/12-ton-...
Sunnen Press Fit Lube: goodson.com/products/b-200l-s...
Yamalube Molybdenum Paste: www.rockymountainatvmc.com/pa...
Racers Edge AZ: www.racersedgeaz.com/
Rocky Mountain ATV/MC: www.rockymountainatvmc.com/
PartZilla: www.partzilla.com/
OEM 2004/2005 Honda TRX450R Part Numbers:
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Lock washer: 90461-KZ3-J10
Center crank case gasket - 11191-HP1-670
Right side outer cover gasket - 11394-HP1-670
Stator cover gasket - 11395-HP1-670
Oil filter - 15412-MEN-671
Left crank bearing - 91001-HP1-671
Updated right crank bearing w/ collar - 91008-HP1-672
Crank seal - 91201-HP1-671, 91202-HP1-671, and/or 91202-HP1-672
Cam chain - 14401-HP1-671
Cam sprocket bolts x2 - 14322-MAN-620
Oil pump gear circlip - 90652-KY4-900
Counter-balancer lock nut - 90231-KB5-720
Clutch hub lock washer - 90461-KZ3-J10
Base gasket (stock) - 12191-HP1-671
Head gasket (stock) - 12251-HP1-671
C-Clip/snap ring for transmission shafts - 90602-259-010 
Авто/Мото
Thank you for creating this video. Without this video I would never been able to do a bottom and top end rebuild on my 05 trx 450r. Service manual not descriptive enough. Thanks again
Glad it helped!
Unreal this video, watched it countless times, and countlessly have torn my motor apart and been saved numerous times because of the little detailed stuff you included. Thank you so so much for making this video
Glad it's helped!
Glad you go way more into detail then I can do. You have more patience for video making. My other channel is TRX Tech
Takes forever to edit these vids! haha
This video wasn't made 3 months ago when I was doing my research. I'm so glad I found it now (: thank you very much for all the details. This is pure gold
No problem, glad it helps!
Best how to hands down!!!!
Thanks 👍🏻
Just tore my engine down tonight this is going to be so helpful when I go for reassembly! Thanks!!!
Hopefully it helps! Thanks
Great video man good work!
Thanks!
Thank you for this video! I bought a 05 450r didn’t know that much about it had some trouble and I used this video to split my cases and fix the issue. You covered literally everything except the kickstart for mine. While I still had the service manual to go by I found this video to be more helpful then the manual. Thank you!
Great - I'm glad to hear it helped!
That’s an awesome video man, definitely gonna help a ton of people!
Thanks, hope it does!
Man that's a badass engine u have over there 💪🏼
Awesome vid 👍
Thanks, appreciate it!
Great Video
Thanks!
This video is a life saver! Thank you so much h for this.
Thank you for the detailed video!
I've got a stock 05 450r that overheated and popped the head gasket. I'm expecting the head to be at least slightly warped. Any advice on who to send the head to?
I would recommend Racers Edge AZ or Oregon Coast Powersports (OCP)
Hey can I ask you a question about my phone Honda 450 er
I would like to know if the crankshaft bearings go in an exact position or in any way
For 04/05 TRX OEM crank bearings - it doesn't matter which way they go in
I have a question do you have to split the motor to change the oil pump I see the star part inside the motor once you slide the gear out does that come off as well ?
Yes you have to split the center cases to change the oil pump. It's 3 pieces total.
What kind of engine oil are you using? Ceramic bearings?
Motul 300v engine oil - and yes, this particular engine uses hybrid ceramic bearings throughout.
"17:33" Do you clean the oil strainer every so often as part of maintenance?
We usually just do it as part of splitting the cases.
Why would my crank move when case bolts aren’t tightened but not when I tighten them? Anyone got any information?
Anything on the outside that would keep it from moving? right side gears? cam chain binding? stator/cover on? if not, i would check to make sure the bearings are seated all the way and check to see what the width of the crank is
Hi in the middle of doing a rebuild on mine and I toughht everything was OK until I seen a post on Facebook off another person doing a rebuild forgot the d ring on the countershaft. This made me think have I done the same, do I need to open up the bottom end again to do this
Are you talking about the rubber ring/seal that goes onto the countershaft behind the countershaft/sprocket spacer? If so, no need to split bottom end, you can just pull the spacer/bushing off from the outside and install the ring there.
@@HottBoysRacing that's good news thanks really appreciate it also which way would you install it round side out on the shaft??
@@danielwalsh7310 - just to confirm, you are referring to part-num: 91201-ML3-873 (#35 on this diagram: www.partzilla.com/catalog/honda/atv/2005/trx450r-a/transmission ) correct? If so, I'm not sure for the "correct" orientation - but I think I've actually installed it both ways and haven't had it leak.
@@HottBoysRacing ya that's the part thanks alot I just ordered one don't remember one being there tho haha
my name is Butch Hott enjoyed Video
From one Hott to another - thanks for watching!
Can I replace the shift shaft without removing clutch basket?
I've tried it, but no, on the 1st gen TRX I wasn't able to replace the shift shaft without removing the basket. (haven't tried it on the 06+ TRX tho)
06+ I was able to pull shift shaft without pulling clutch basket.
Why put the left bearing on the crank first ? Why not just install into the case? Are you using the updated 04-05 crank
Definitely more than one way to do it - this is just how we prefer. And yes - for stock builds, always OE updated crank and bearings.
Fuckin great video 👍👌
Thanks man - hoping it helps a person or two
Hey bro, where can i find the crank collar?
As far as I know, you can only get the collar with the right side bearing - OEM part number: 91008-HP1-672 - I use PartZilla
Hello, crankshaft seal, are you 29,9/44/7??
I am 30/44/7. Good video
I'm not 100% sure - but you'll probably need to order and use the same size that came out of your engine
How much HP does your engine have?
Last time I had it on the dyno was 3 years ago and it made 95hp at the wheels.
What size is your engine? And what size is your stroker crank shaft?
@@jeromewells151 - 647.69cc. Crank is 74.8mm (+10mm)
After seeing the list of tools i need a professional lol