The Motorcycle Forge
The Motorcycle Forge
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Making The Worlds Fastest 150cc 4T Barrel
Making a barrel from scratch for my race bike. Design, printed and cast.
This barrel will bolt on to a FXR 150 bottom end and allow water cooling and allow the use of a bigger piston running in a plated cylinder.
มุมมอง: 10 444

วีดีโอ

Making the Worlds Most Powerful 150cc 4T
มุมมอง 11K28 วันที่ผ่านมา
The next video on my overly ambitious plan to make my own motorcycle race engine completely from scratch.
Saving this Legendary MC22 CBR250 RR Honda
มุมมอง 3.6Kหลายเดือนก่อน
Fixing up this Honda MC22 weapon that has been neglected a long time. Its 1990 CBR250 RR with the highest redline of any production motorcycle. An insane 19K Rpm and limiter at 20K. They sound like when F1 had real engines like the V10's.
Making The Worlds Fastest 150cc 4T from scratch
มุมมอง 9K2 หลายเดือนก่อน
Cylinder Head Welding, Alu Head T6 Heat treat, Cylinder Head Machining. Latest video in my quest to build my own engine from scratch in my garage at home. Having a ton of fun and learning a lot.
Casting the Perfect Cylinder Head (Almost)
มุมมอง 2.4K3 หลายเดือนก่อน
Race Motorcycle Performance Cylinder Head Casting at home in the garage. In this episode, I Boil some water, 3D printers are slow and I need a nap. Enjoy the show.
How to Scrutineer/Inspect your Race Motorcycle
มุมมอง 5284 หลายเดือนก่อน
Hopefully this will save a few riders from having preventable mechanical failures that could have been picked up earlier. Also this will make life much easier having it track ready before you go to the track, as race day repairs suck.
Dissecting a R6 Valve train and Cylinder Head Machining.
มุมมอง 8934 หลายเดือนก่อน
Bit of everything in this video. I start off making spacer blocks for the sine plate then continue the machining process on my cylinder head to figure out what design changes need to be made before my next casting.
Building a Sine Plate for Machining the Cylinder Head
มุมมอง 5455 หลายเดือนก่อน
Dipping my toes into the world of machining and frankly its way harder that it looks when trying to make stuff super accurate. Learning a ton and enjoying the adventure.
Old Motorcycle Won't Start? Easy Checks and Cheap Fixes.
มุมมอง 7016 หลายเดือนก่อน
In this video I show you what to look for when getting a bike going that's been sitting for years. Father time is not kind to motorcycles that have been sitting a long time, so hopefully it's not to late for your new project.
T6 Heat treating my Cylinder Head
มุมมอง 1.3K6 หลายเดือนก่อน
In this video I show you how I did a T6 solution Heat Treatment on a couple cylinder heads that I cast in previous videos. It's pretty straight forward and easy to do. Finish up with some dabbling on the Mill.
Bucket Racer Cylinder Head Casting
มุมมอง 2.1K6 หลายเดือนก่อน
The quest for the ultimate bucket racer engine continues with this instalment of me attempting to cast a cylinder head I designed myself.
Motorcycle Brakes, Master Cylinder Rebuild and Repair
มุมมอง 7K7 หลายเดือนก่อน
In this video I show you how to properly repair a old motorcycle master cylinder that is in need of a rebuild. It will work like new if you follow these steps.
Investment Casting my Own Cylinder Head
มุมมอง 1.8K8 หลายเดือนก่อน
In this video I am at it again casting cylinder heads. Going from 50% to full size as well as making some new tools to use.
Perfect Motorcycle Fork Rebuild
มุมมอง 1.6K9 หลายเดือนก่อน
In this video I rebuild some conventional forks showing you the process so you can rebuild you own forks at home the right way, like a qualified mechanic.
Casting my High Performance Cylinder Head.
มุมมอง 3.7K10 หลายเดือนก่อน
Another step in the right direction on my quest to make my own cylinder head for my race bike.
Cylinder head casting in the Garage
มุมมอง 1.5K11 หลายเดือนก่อน
Cylinder head casting in the Garage
Casting a Performance Cylinder head in the Garage
มุมมอง 5Kปีที่แล้ว
Casting a Performance Cylinder head in the Garage
Furnace and Tool fabrication (Casting a cylinder head)
มุมมอง 671ปีที่แล้ว
Furnace and Tool fabrication (Casting a cylinder head)
Making a Performance Cylinder Head in the garage
มุมมอง 1.2Kปีที่แล้ว
Making a Performance Cylinder Head in the garage
Repairing and adjusting Motorcycle Clutch.
มุมมอง 2.7Kปีที่แล้ว
Repairing and adjusting Motorcycle Clutch.
Compression Ratio , Measurement, Calculation and Modifying.
มุมมอง 7Kปีที่แล้ว
Compression Ratio , Measurement, Calculation and Modifying.
Custom Valve Spring Compressor
มุมมอง 2.2Kปีที่แล้ว
Custom Valve Spring Compressor
The Perfect Motorcycle Brake Caliper Rebuild
มุมมอง 108Kปีที่แล้ว
The Perfect Motorcycle Brake Caliper Rebuild
Making a Performance cylinder head From Scratch
มุมมอง 2.1Kปีที่แล้ว
Making a Performance cylinder head From Scratch
Garage Update
มุมมอง 1382 ปีที่แล้ว
Garage Update
How to make your motorcycle Faster
มุมมอง 78K2 ปีที่แล้ว
How to make your motorcycle Faster
Replacing Yamaha MT09 Clutch
มุมมอง 25K2 ปีที่แล้ว
Replacing Yamaha MT09 Clutch
pwk Carb Jetting, Setup and Tuning
มุมมอง 151K2 ปีที่แล้ว
pwk Carb Jetting, Setup and Tuning
Lumpy Cam Install FXR150 / Rs125
มุมมอง 1.6K2 ปีที่แล้ว
Lumpy Cam Install FXR150 / Rs125
dt175 Steering Head Bearing Replacement
มุมมอง 2.4K2 ปีที่แล้ว
dt175 Steering Head Bearing Replacement

ความคิดเห็น

  • @mart0146
    @mart0146 18 นาทีที่ผ่านมา

    Amazing work man, congratulations! 👏🏼 Question. What investment material did you use? Just regular plaster? Thanks

  • @scottemory1470
    @scottemory1470 7 ชั่วโมงที่ผ่านมา

    Might be good but for your sound effects/music blaring through my speaker

  • @michaelgiroux5736
    @michaelgiroux5736 11 ชั่วโมงที่ผ่านมา

    Just want to say this whole series has been rad to watch. Can I ask what you use for a mill and lathe? They seem like they would fit my needs well!

  • @sportmuaythaiv1045
    @sportmuaythaiv1045 12 ชั่วโมงที่ผ่านมา

    I've a different opinion on going faster and safe. Go to the nearest race track and get some track time. Most tracks have teacher(s). Get the coaching. Next would be to get better suspensions. My preference is YSS. Also get proper tyres. Next is to get your ecu reflashed on dyno! You should get race exhaust full system, race velocity stacks, and race filers before reflashing your ecu. You may need to get stronger clutch springs to handle the increased engine power.

  • @elburropeligroso4689
    @elburropeligroso4689 18 ชั่วโมงที่ผ่านมา

    Orange glowing molten aluminum looks like fluorescent neon Cheetos...

    • @TheMotorcycleForge
      @TheMotorcycleForge 11 ชั่วโมงที่ผ่านมา

      @elburropeligroso4689 Hahaha not quite as tasty though 😅

  • @hunnybunnysheavymetalmusic6542
    @hunnybunnysheavymetalmusic6542 22 ชั่วโมงที่ผ่านมา

    I would suggest that you raise your melt temp and your mold temp about 38C hotter than you have it.

    • @TheMotorcycleForge
      @TheMotorcycleForge 11 ชั่วโมงที่ผ่านมา

      @@hunnybunnysheavymetalmusic6542 I did end up upping the temp after this video, It definitely helped.

  • @hunnybunnysheavymetalmusic6542
    @hunnybunnysheavymetalmusic6542 22 ชั่วโมงที่ผ่านมา

    Yeh.... Interrupted pours are definitely bad...

    • @TheMotorcycleForge
      @TheMotorcycleForge 11 ชั่วโมงที่ผ่านมา

      @@hunnybunnysheavymetalmusic6542 😆 Yep, inclusions everywhere haha

  • @satria4195
    @satria4195 วันที่ผ่านมา

    It is sounds like something

  • @poptartmcjelly7054
    @poptartmcjelly7054 วันที่ผ่านมา

    The reason your casting is less good the closer it gets to the top is because of the pressure dropping as the amount of aluminum on top applying pressure decreases. I've noticed that increasing the height of the risers to increase heights of the aluminum column helps with quality.

  • @felderup
    @felderup วันที่ผ่านมา

    how bout you try jewellery style investment mould making? you coat the pattern with thin investment, let it dry, add more, let it dry, then do a few thick layers, some with sand, then put the whole thing in loose sand.

    • @TheMotorcycleForge
      @TheMotorcycleForge วันที่ผ่านมา

      @felderup Hmmm that's a cool way of doing it, I may try it in the future.

    • @felderup
      @felderup วันที่ผ่านมา

      @@TheMotorcycleForge a lot of youtubers almost do it, they coat foam patterns for lost foam in random kinds of plaster, sometimes drywall compound. the jewellery method holds together better, has to, cause you melt out the pattern. some go crazy with plant fibres as reinforcement, they're not backed by sand, but an engine casting in sand would be fine without.

  • @noviceartisan
    @noviceartisan วันที่ผ่านมา

    You really should be doign this with ceramic shell casting, not unvacuumed block moulds :)

    • @TheMotorcycleForge
      @TheMotorcycleForge วันที่ผ่านมา

      @noviceartisan I had plenty of investment left over from casting the head, so it was easier to just use that and I couldn't do ceramic shell casting on the head due to the water jacket, it would have been impossible to remove the shell from somewhere you can't see or touch.

    • @noviceartisan
      @noviceartisan วันที่ผ่านมา

      No way to add a vacuum port to the base so you could whack a shop vac and massively help the casting flow? I've made my own vacuum system up, and experimented a bit to add vacuum to things to make them work with investment :)

    • @TheMotorcycleForge
      @TheMotorcycleForge วันที่ผ่านมา

      @noviceartisan I did make a vacuum chamber and got a vacuum pump and tried it once but had a blowout due to insufficient mold thickness, so I decided just to do it gravity casting for now. I will have another go at vacuum casting in the future.

  • @robertoburromiapanino2659
    @robertoburromiapanino2659 วันที่ผ่านมา

    Bloody Kiwis, clever little basstards... and persistent! Listen mate, have you covered how you calculate for shrinkage in any of your previous videos? I have watched all of them but don't recall much on the topic. btw, can you make 10 videos a week, they're ******* rippers!

    • @TheMotorcycleForge
      @TheMotorcycleForge วันที่ผ่านมา

      @robertoburromiapanino2659 haaha very high praise, much appreciated. Yeah so shrinkage in Alu is supposed to be around 3% so I just made the wall thickness to accommodate that. I tried casting 103% size but it doesn't shrink like that as the distance between parts doesn't change, only the wall thickness does. So casting 100% size yielded more accurate castings. As far as feeders on top of the mold, you want at least the same volume as the rest of the casting. Hope this helps, and I'll try but 10 week might be a stretch 😅

    • @robertoburromiapanino2659
      @robertoburromiapanino2659 วันที่ผ่านมา

      @@TheMotorcycleForge Thanks mate, much appreciated.

  • @mgck6822
    @mgck6822 วันที่ผ่านมา

    Love this. Arrc spec ub150 makes around 27hp. 22mm intake valves 32mm throttle body

    • @TheMotorcycleForge
      @TheMotorcycleForge วันที่ผ่านมา

      @mgck6822 very impressive, my current goal is 30hp at the wheel and see where we go from there.

    • @mgck6822
      @mgck6822 วันที่ผ่านมา

      @TheMotorcycleForge not sure what's your plans for the bottom end or if ur race spec allows non factory fitted, the gsxr150 fi or raider 150fi crankshaft and rod is kinda updated version of the fxr. Smaller lighter crank, shorter rod at 98mm, smaller piston pin 15mm. I have a feeling it will drop in

    • @TheMotorcycleForge
      @TheMotorcycleForge 11 ชั่วโมงที่ผ่านมา

      @mgck6822 I have designed most of the engine components to accept R6 parts so I will be making a billet crank from scratch to suit a R6 rod but also fit in the fxr crank cases.

  • @georqedubyakush6066
    @georqedubyakush6066 วันที่ผ่านมา

    Theres nothing like trying to save some dough, fuckin up, and ending up spending twice as much. At least I'm not the only one lmao

    • @TheMotorcycleForge
      @TheMotorcycleForge วันที่ผ่านมา

      @@georqedubyakush6066 Yep haha, can't give up!

  • @beachboardfan9544
    @beachboardfan9544 วันที่ผ่านมา

    6:11 Whats the stuff you poured on top?

    • @TheMotorcycleForge
      @TheMotorcycleForge วันที่ผ่านมา

      @@beachboardfan9544 Hot topping to keep the feeders molten till last, it helps prevent shrinkage

    • @beachboardfan9544
      @beachboardfan9544 วันที่ผ่านมา

      @@TheMotorcycleForge Whats it made of?

    • @TheMotorcycleForge
      @TheMotorcycleForge วันที่ผ่านมา

      @@beachboardfan9544 I have no clue, it may be something like thermite

  • @GaryJonrd
    @GaryJonrd วันที่ผ่านมา

    Any plans on doing any 2 stroke stuff im a 2 stroke person

    • @TheMotorcycleForge
      @TheMotorcycleForge วันที่ผ่านมา

      @GaryJonrd I plan to build a rotary/Wankel race engine which is pretty much a two stroke 😅. I have a dt175 which I have tuned and will definitely be doing other two stroke projects in the future.

  • @ashesman1
    @ashesman1 2 วันที่ผ่านมา

    This reminds me of when 2StrokeStuffing made his own barrels...

    • @TheMotorcycleForge
      @TheMotorcycleForge วันที่ผ่านมา

      @ashesman1 Very high praise, and he does some awesome work 👌

  • @irfanashraf1238
    @irfanashraf1238 2 วันที่ผ่านมา

    Sir you one die hard engineer “bravo”

  • @btchllama
    @btchllama 2 วันที่ผ่านมา

    Great video mate, love to see someone making videos on things they are actually passionate about 👍👍

  • @nickrider5220
    @nickrider5220 2 วันที่ผ่านมา

    Utmost respect for your work, most people are pretty stoked if they can rebuild an engine (me included)......but making one 😮

    • @TheMotorcycleForge
      @TheMotorcycleForge 2 วันที่ผ่านมา

      @nickrider5220 Cheers Nick, it's definitely a process and enjoying all the learning.

  • @bo-dine7971
    @bo-dine7971 2 วันที่ผ่านมา

    "On tonight's episode, I pet my Cat" Ok, subbed, notifications on!

  • @alifhakimi2326
    @alifhakimi2326 3 วันที่ผ่านมา

    Do you want to make watercooled for fx150. Why dont u use satria fu fi/ raider fi. Already have coolant hole.

    • @TheMotorcycleForge
      @TheMotorcycleForge 2 วันที่ผ่านมา

      @alifhakimi2326 Because I would still need to make a new barrel as the valves and piston would be too big, and it's a lot more fun to make it myself. 😁

  • @tjaynef
    @tjaynef 3 วันที่ผ่านมา

    Love it !!

  • @Paulman50
    @Paulman50 3 วันที่ผ่านมา

    👍🙂

  • @My_Gaming_Mind
    @My_Gaming_Mind 3 วันที่ผ่านมา

    Plane or needle bearing would be a lot better for durability and robustness 4:00

    • @TheMotorcycleForge
      @TheMotorcycleForge 3 วันที่ผ่านมา

      @My_Gaming_Mind Unfortunately, the main bearings will have to stay as ball bearings. It would require making new crank cases which I'm not quite up to doing just yet. The big end of the conrod will be a white metal/ plain bearing.

  • @emanggitulah4319
    @emanggitulah4319 3 วันที่ผ่านมา

    Well done, the 3rd try went very well.

    • @TheMotorcycleForge
      @TheMotorcycleForge 3 วันที่ผ่านมา

      @emanggitulah4319 Yes, I am very pleased to be onto machining so soon.

    • @emanggitulah4319
      @emanggitulah4319 3 วันที่ผ่านมา

      @TheMotorcycleForge just subbed. Excited to see the journey... Loved the cardboard aided design LOL

    • @TheMotorcycleForge
      @TheMotorcycleForge 3 วันที่ผ่านมา

      @@emanggitulah4319 Thanks, much appreciated 👍

  • @YAMR1M
    @YAMR1M 3 วันที่ผ่านมา

    How about Densamet for the crank counterweights? You can machine steel ones and then add densamet plugs to the steel. We used to do this for Brabus crankshafts as well as Ducati World Superbike cranks that we used ro make.

    • @TheMotorcycleForge
      @TheMotorcycleForge 3 วันที่ผ่านมา

      @YAMR1M oooh yeah that's a great idea. I will look into that. Cheers Logan

  • @dan5her
    @dan5her 3 วันที่ผ่านมา

    I'm familiar with that friend of yours in Australia 😅 Glad to see you sticking with the project mate, it's coming along great

    • @TheMotorcycleForge
      @TheMotorcycleForge 3 วันที่ผ่านมา

      @dan5her yep, it's a small world ahha. Cheers man.

  • @corey_nz
    @corey_nz 3 วันที่ผ่านมา

    Legal CC 😂😂

  • @Kingcactus20000
    @Kingcactus20000 4 วันที่ผ่านมา

    What is the red dust you put on the hot mould?

    • @TheMotorcycleForge
      @TheMotorcycleForge 3 วันที่ผ่านมา

      @Kingcactus20000 It's called hot topping, it keeps the feeders molten to help minimize shrinkage.

    • @JermainFishwick
      @JermainFishwick 3 วันที่ผ่านมา

      @@TheMotorcycleForge Awesome pour. That hot topping is like a thermite right? But you do see a big difference with or without hot topping? Great work

    • @TheMotorcycleForge
      @TheMotorcycleForge 3 วันที่ผ่านมา

      @JermainFishwick Thanks man, yeah I think it's some type of thermite, and it actually makes a massive difference.

    • @JermainFishwick
      @JermainFishwick 3 วันที่ผ่านมา

      @@TheMotorcycleForge Thanks for the reply! Take care

  • @mattparker5639
    @mattparker5639 4 วันที่ผ่านมา

    Awesome job mate, can't wait to hear it run

  • @royrowden5765
    @royrowden5765 4 วันที่ผ่านมา

    great work well done, looking forward to the next episode Roy NZ

  • @GC-xy2ec
    @GC-xy2ec 4 วันที่ผ่านมา

    This is great what a journey. Can't wait to hear that engine fire

  • @GoodnightWalter
    @GoodnightWalter 4 วันที่ผ่านมา

    Bloody brilliant. 👍

  • @DustyVisorMotorcycles
    @DustyVisorMotorcycles 4 วันที่ผ่านมา

    Woo Hoo, that was a great Episode. Awesome progress!!! 😎

  • @zoo4elias
    @zoo4elias 4 วันที่ผ่านมา

    Hello, could I instal pwk in my scooter consider its 150 cc Chinese?

  • @stevenrobertson1631
    @stevenrobertson1631 5 วันที่ผ่านมา

    Great video! Very quick but very thorough

  • @jamiestanley8774
    @jamiestanley8774 6 วันที่ผ่านมา

    Hi logan .

  • @crossbow_reveiw
    @crossbow_reveiw 7 วันที่ผ่านมา

    If you advance the pickup coil on a small cc bike do you get more power and do you need to give it more gas and where like tuning in catby

    • @TheMotorcycleForge
      @TheMotorcycleForge 7 วันที่ผ่านมา

      @crossbow_reveiw Be very careful with the pickup coil as if you add too much advance, you will destroy the engine. You will need a way of testing alterations to make sure it isn't knocking.

  • @petersilva4242
    @petersilva4242 10 วันที่ผ่านมา

    What is the powder that you put on the aluminium after the pour

    • @TheMotorcycleForge
      @TheMotorcycleForge 10 วันที่ผ่านมา

      @petersilva4242 It's called hot topping, The reaction keeps the feeders molten to help with shrinkage.

  • @mattclarke3621
    @mattclarke3621 12 วันที่ผ่านมา

    Great vid. Timing was perfect, as this is a job on my sv650.. 🤣🤣

  • @desertrider325
    @desertrider325 12 วันที่ผ่านมา

    Does the concave stick Outwards or in towards the bike?

    • @TheMotorcycleForge
      @TheMotorcycleForge 12 วันที่ผ่านมา

      @desertrider325 I think it was inwards but it was quite a while ago so not 100%

  • @darkogligorov606
    @darkogligorov606 12 วันที่ผ่านมา

    So i have yamaha aerox 2 stroke. After switch to 70 cc i put after market exusost and built the transsmision,and up jet the carburetor so now its start but after 2 minuts of idling its shot off. I played with the fuelscrew if i add more air the idle is hang on a litl but on that setings when i blip the throtle its back right on the idling but after that go below idle and its dies. And today i was riding it for like 5-7 minuts it was going good but when i stop the idle was incrise and its was idling like 4 stroke scooter then whants to die. What your suggestions on that ??

    • @TheMotorcycleForge
      @TheMotorcycleForge 12 วันที่ผ่านมา

      @darkogligorov606 I would say, you need to rejet it and see how you go. Maybe to big on pilot jet.

  • @markusreynolds7586
    @markusreynolds7586 13 วันที่ผ่านมา

    Suzuki 750 07 trying too be the fastest 750 on the east coast

    • @TheMotorcycleForge
      @TheMotorcycleForge 12 วันที่ผ่านมา

      @@markusreynolds7586 Ambitious, I like it

  • @pabloruizhenao2761
    @pabloruizhenao2761 16 วันที่ผ่านมา

    Hiya Logan. Where in NZ are you based? You're one of the best explainers I've seen in TH-cam. Was wondering if you would spare a bit of your time and teach/show me how to get my bike carby and valves running sweet? I'm happy to pay you for your time! I'm in Christchurch.

    • @TheMotorcycleForge
      @TheMotorcycleForge 16 วันที่ผ่านมา

      @pabloruizhenao2761 yep, I would be happy to help. I'm in Rolleston, flick me an email, and we can organize something. Cheers Logan

  • @vijaykorvekar1009
    @vijaykorvekar1009 17 วันที่ผ่านมา

    Nice ,do u have cad model of honda rs125 nx4 frame, swing arm, fairing and other other parts?

    • @TheMotorcycleForge
      @TheMotorcycleForge 17 วันที่ผ่านมา

      @vijaykorvekar1009 Not a cad model, unfortunately, that would take me quite a while to draw up. I have two physical nx4 chassis in the garage, though 😅

    • @vijaykorvekar1009
      @vijaykorvekar1009 17 วันที่ผ่านมา

      @TheMotorcycleForge is there any way you cab 3d scan it ,with good quality

    • @TheMotorcycleForge
      @TheMotorcycleForge 17 วันที่ผ่านมา

      @vijaykorvekar1009 I currently don't have a 3d scanner, but it's definitely on my list of things to get.

    • @vijaykorvekar1009
      @vijaykorvekar1009 17 วันที่ผ่านมา

      ​@@TheMotorcycleForgecan you 3d scan your honda rs125nx4 fairing ?,do you have Instagram or Facebook? I would like to check out your honda rs125 nx4

    • @vijaykorvekar1009
      @vijaykorvekar1009 17 วันที่ผ่านมา

      @TheMotorcycleForge I am not the rich guy ,but I'll pay for 3d scan of the honda rs125 nx4

  • @jackbeets3309
    @jackbeets3309 18 วันที่ผ่านมา

    Nice work man subbed to see future progress

  • @pbysome
    @pbysome 19 วันที่ผ่านมา

    Should really withdraw the reamer under power.

  • @StoicriderX
    @StoicriderX 19 วันที่ผ่านมา

    I watched a video on this job, he said to be careful when inserting the seal’s as one of them has a lip on one end and need’s to be fitted that way up

    • @TheMotorcycleForge
      @TheMotorcycleForge 19 วันที่ผ่านมา

      @@StoicriderX Most calipers are the same as this one where the seals can go either way up. But I'm sure some odd ball bikes have asymmetrical seals. You will soon know when you get the old ones out, give em a good clean and inspect.

  • @jamest.5001
    @jamest.5001 20 วันที่ผ่านมา

    I would raise the intake ports as much as possible. Even if it ment modifying the valve cover to allow the intake runner to run beside the valve springs. Also raise the exhaust ports to around 20-25 mm of the valve cover flange. Raise the spring floor slightly . Finding valves that much longer possibly 12- 20 mm longer. Maybe find valves that are much longer. Possibly find larger valves with the same stem diameter. Grind the head to size or possibly have the stems ground to size as well. Carefully and slowly milling the lock, slowly creeping up to the size of the grooves required for the locks and retainers. Maybe a manufacturer will make a small batch of valves for you may as well go up in size a couple mm while at it. Have valves produce that are 3-6 mm over size before finish grinding to size . To allow for larger valves. A intake that has a carburetor boot bolting on the valve cover would have to produce some power. The flow bench should show major improvement. Making slight changes to a stock head isn't really going to do it. And I'd rather have the iron sleeve, plates cylinders are too fragile in my opinion. I could really get into a project like this. I was working on a scooter project trying to get the most from a 50/81cc engine. I ported the head too much, bought another, ported the roof of the intake only, bored the throat out about .020" gave it as much of a high port as possible. Getting more like 12-15 mm would be better. Used a high compression piston, skimmed the head slightly. Unshrouded the valves. I wanted to remove more like . 030" -.040" from the head or . 010" - .020" of that from the cylinder would be better get more quench. Have the piston at the top of the cylinder. It made decent power for what it was. I also went with over size valves. The valves are . 3mm over stock size. They could be 1mm larger. Having the spring pocket coming out into the intake port will hurt performance slightly! 😂, You learn from mistakes. I could epoxy a spring shim in place or buy another head and leave the port . 020" smaller! ✌️ Can't wait to see what's next!

    • @TheMotorcycleForge
      @TheMotorcycleForge 19 วันที่ผ่านมา

      @jamest.5001 The intake ports are as high as practical for packaging, @45°. The valves are much bigger than stock size +5mm and they are titanium so you can't grind them as they are coated. I do love a good project. Cheers Logan