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@@Yt_xrider thank you for liking and subscribing if that was you; you’re awesome!! I’m very excited also, just waiting on parts lol. No need to be silent, I like when people comment and talk about the projects.

@@DustySteel i enjoy this kind of content,what size of valves are you gonna use?i think your bike would be a monster if you use 4valve heads. but i think the issue would be overheating.

@@Yt_xrider I’ve considered going to a 4 valve but already have a 39/34 head in the making. I’m definitely going to upgrade the oil pump and probably add an oil cooler or two.

@@Yt_xrider as for power… let’s just say that I’m not just stopping with the 78mm.😎

@@DustySteel 👍🏻🙂 nice,so you do the machining yourself? Could you maybe make a video on how to oversize the valves.

@@user-ib6mw2kn9l yeah, it turned out perfect. I should’ve shown cutting it open.

@@AdrianJeremy369 thanks for watching! It all depends on where you buy your parts and how much you want to spend for quality. If going cheap as possible, then I would say it could be pieced together for around $400. The BRT head that I bought from SXParts is no longer available through them though.

@@AdrianJeremy369 that being said; there’s a guy on FB group who makes custom kits for the crf150 called Abe’s Engine Idea. It is VERY expensive around $2100 for everything if you want to build a 300cc stoker motor.

@@ChrissScooterSupportGroup hey Chris; thanks for watching and subscribing if that was you. I used the stock xr150l cam tower and rocker arms. Stock cam gear also. I kept the valve lash the same after trying their recommendation.

@@ChrissScooterSupportGroup this head doesn’t have the exhaust tube from the valve cover so that’s something that needs to be kept in mind if using stock emission equipment.

@@2_Wheel_Waldo thanks for watching! I got this grill basically for free. Can charcoal also be used with a pellet smoker? I like the flavor that the coals add. I use a soup can with holes drilled in it if I just want to use wood pellets.

@@Pew-pew-is-fun thanks for watching and subscribing if that was you! You’re awesome!! The new big bore video will be in a few weeks. I bought a 78mm BBK from the bay. I’m going to do a compression test first with the 70mm big bore first. I need to have the piston that I bought and the crankcase machined also. I’m probably going to make series out of it.

@@MishMashMoto 🤣🤣

We had made some pizza yesterday using grain free bagels as the crust; they were delicious! They would’ve been better on the grill though; just my preference.😎👍

@@user-rc2sc5hf9v yessir!! Thanks for watching! The mod list is in the description.

@@user-rc2sc5hf9v the video of me reaching 88mph is me maxing out 5th gear using the 18t sprocket in the front and a 46t sprocket in the rear along with the performance mods. I never used it with the stock bike though.

@@user-rc2sc5hf9v thank you for watching and subbing if that was you!

@@TheMotorcycleMessenger I might need to look into that. I don’t like the collar on this jacket. Otherwise it’s been a great jacket; definitely worth the price.

@@DustySteel I felt the same way about the collar, but I did end up getting used to it. The Joe rocket is the ballistic series and it is a summertime jacket that is made out of mesh and pretty much has armor everywhere.. it is fitted and doesn’t have that bothersome collar. Next time you go to your local dealership, check them out. Airflow is great.

@@TheMotorcycleMessenger thanks for watching and subscribing!!

@@adamloveshondas3122 that would be cool! Thanks for watching!😎👍

@@MishMashMoto okay; I was going to try and get my money back for the head though. Yeah, I was hoping the piston had the indents on the piston for the valves so I didn’t have to worry about it as much. If people use the +4.2mm then in theory it should work, right? I know I’ll have to run that 1mm gasket for sure!

@DustySteel Sounds fair enough to me on the head. That all depends on the deck height of the piston with a 4.2mm stroked crank. You can calculate it with all the specific measurement info. You can normally alter things like piston pin location (probably not in this case) and use a taller cylinder to increase your deck height clearance. I don't know all the specs on those parts to help you though. The 1mm spacer is probably for extra deck spacing. You will need to precisely measure everything and do some calculations to know your compression ratio and clearances (unless this is a pre-enginered kit with instructions). That piston is only going to be "correct" for either a XR150L stock stroke or a +4.2mm "stroker" crank though.

@DustySteel Is that cylinder about an 1/8" taller than the other cylinder? If so, your probably good with the +4.2mm stroke, but check everything anyway.

@@MishMashMoto it might be. I never measured the stock one but after I put the 70mm cylinder in I noticed that at TDC the piston was below the deck height by like 3-4mm.

@@MishMashMoto i do know you do need a piston head that accounts for the stroke increase.

@@Brandon-fv7rc thanks for watching and for the info! I’m definitely going to have to do that.

@@Brandon-fv7rc dimples… is that the name for the clearances on top of the piston for the valves?

@@DustySteel yeah i dont know what to call it i just know how to check the clearance lol. i used played doe just add oil so it doesnt stick to valves i think you want it to stick to piston.

@@KatieJackson-t4m hey I have that!🤣 Then I can measure the thickness of play-doh. I thought clay had to be used, though that’s probably not hard to get either. That helps a lot because I thought I had to take it somewhere to have that done. I’m going to do more research on that! Thank you!

Its an annoying process to put things together and back apart and back together ​@DustySteel

@@SeanLesterD.Agapito thanks for watching! Yeah, bolts right up. I think SX is sold out but if you search for a BRT Racing CRF 150 big valve head you’ll be able to find them. I might have mine for sale soon because I’m going bigger for the 78mm piston.

Will you sell your 70mm block sir from the Philippines?

@@SeanLesterD.Agapito yeah, but it’s already sold.

@@2_Wheel_Waldo it’s huge!! Thanks for watching and subscribing if that was you!

@@DustySteel yessir i subbed! Love to help support Any of the Goat army

@@2_Wheel_Waldo thank you sir!! I also subbed.

@@rnkustomz thanks for watching and subbing!! Unfortunately I do not live near Iowa.😂

@@AliasTekTV thanks for watching!! I’m definitely not staying with the stock cooling system.

@@AliasTekTV one of the first mods I did to my Audi was put in a custom Mishimoto radiator. Cooling is definitely a priority in any build. I probably won’t be racing it or running it wide open for long periods of time. I really appreciate your advice though and I’m a huge fan of the Audi/VW world. Really anything that goes fast.

@@AliasTekTV Agreed, I personally believe most of the sealing issues on the old aircooled VW engine builds were due to people not using "torque plates" while the machine work was being performed. I ran 90.5mm cylinders on my hotrod VW bug because of the extra cylinder wall thickness. 👍🏼👍🏼

I definitely understand though that the thinner wall won’t last as long no matter how much cooling a do. Putting a big bore kit in general will definitely make parts wear out faster. I don’t know why I didn’t add to that to begin with lol.

@@DustySteel For over 10 plus years Brazilian's CRF230 have been bored to 270cc without issues. The CRF230 and XR150 share almost identical motors. The 230F has a 6 speed gear box, however, many Brazilians use the 230F's head cylinder on their 150F. The 150f and XR150 motors are identical in every way. Another side note: The 150F/230F, Nor the XR150 can be made to receive 290cc. The Brazilian, however, found a way but it requires more than splitting the crank case. The only thing that truly separates the 150XR from the CRF150 is the chassis. The CRF150F has an aluminum swing arm, where the XR's is made of steel. The CRF150F has the capability to have a linkage for suspension where the XR does not. The CRF150F has aluminum rims where the XR150 has steel. The CRF fame allows foot peg adapter relocation. The CRF150 is the racing version of the XR150 due to upgraded parts, otherwise they are identical platforms.

@@smileyguyz thank you for watching!! Hey Ryan!! How’s it going? Haven’t heard from you in a while.

@@DustySteel Pretty good overall. Just been beating the hell out of my XR to find the weak points. There aren't many lol. I'll be posting an update video eventually here, just gotta get some other bikes fixed first.

@@smileyguyz I subbed. 👍🏼👍🏼

@@smileyguyz nice! That’s good to hear that you’re doing well. Nice! You got some other bikes?

@@DustySteel Yup, I've got some other more dirt focused bikes & I like to rebuild bikes too.

@@adamloveshondas3122 Thanks for watching! I’ll have to look up a case saver then. I will probably put the 17t back on and keep the 18t for when I know I’m going to be in the highway. I definitely plan on completing building the top and bottom end. Just got a 78mm big bore that I’m going to make a video soon on.

@@kriswthak9175 thanks for watching! I really appreciate the compliment.😎 I think that head is sold out on that website but if you search for a BRT Racing Crf 150L Big Valve Head, then it can be found on other websites.

@@RedRideRVT1R thanks for watching!

@@dr.x4050 thanks for watching! Definitely with just the big bore it’ll do 65mph. It would still drop going up really large hills though. The head really let it breathe up top.

@@dr.x4050 I have my parts list in the description.

@@Yt_xrider thank you for watching! I’ve seen the +4.2mm and the +6mm ones. I’m not sure yet which one to go with. There are definitely more ways to make it go faster.😎👍

@@Yt_xrider can you give me more specific keywords to search besides 70/9 or 70/5 engines? Nothing is showing for that when I search.

@@kriswthak9175 I believe the 36/31 is out of stock at the moment from SXParts but the smaller version they have is better for a 70mm. If you order from them they supply the very hard to find intake manifold. I had to clearance the outside of the flange a little. I’m going to make a video about it soon.

@@kriswthak9175 Thank you for watching! Subscribe for more if you haven’t already.

@@Xr150hobbys yeah SXParts is sold out of the 36/31, are they sold out of the smaller size? If not then go with the smaller size one. I went with a stage 3 cam. The head came with the intake manifold. You can just search for a BRT Racing CR 150 head and you should be able to find them also on the bay website.

@@Xr150hobbys I updated the parts lists in the description.

@@DustySteel thank so much I’m still unsure if I wanna do it’s but I wanna get pricing and parts and no not good enough to know what will work and what won’t

@@Xr150hobbys if you join the fb group, @Katie Jackson is selling their kit because they want to go even bigger.

@@DustySteel I don’t have fb lol but thanks

@@613Builds thank you! Yeah, a clip along with the stick bracket as a spacer works well.

@@koroshbaradaran9001 I couldn’t find the manifold anywhere either. I got mine from SXParts when I ordered the head and they didn’t even show it on their website. The intake manifold is actually only a 30mm but could be bored out to 32mm easily because the intake side of the head is 32mm. I would email SXParts and ask if they have anymore left. They said they also had 32mm ones. It is nice though; has an o-ring. I had to make a small clearance to the flange but it was easy with a file.

@@ShanenDanaShoemaker-wf4tr I updated the mods list in the description. Thanks for watching!

@@ShanenDanaShoemaker-wf4tr also thank you for sharing one of my early videos in a forum.

@@2010ToyotaCarolla thanks for watching! To get to 88mph?

@@DustySteel nah just in general, I run a CRF150 rear sprocket on my XR. It’s a few teeth bigger and it adds ALOT more torque

@@2010ToyotaCarolla oh gotcha! At the moment I have an 18t in the front and a 46t in the rear for highway speed. I use this bike for commuting and delivery so it’s helpful to have a higher top speed. With stock gearing I could lift the front tire just by giving it the beans; it was very fun!😎👍

@@DustySteel aaah yeah I get that. I also use mine for commuting but rarely do I have to take it on the highway so more torque is better for my use. Plus getting the wheel up is absolutely insanely easy, a lot more fun to practice wheelies with it now. Plus I’m on South African roads 😂 I need that extra few teeth to get out of nasty situations. Pretty insane that you can get an extra 10mph out of this engine though

@@2010ToyotaCarolla I rarely need to take it on the highway also; just did it to get the top speed and to know what sizes got me there. I’m 6’2” and probably north of 200lbs and I’m at an elevation of around 5000’.

@@user-tl4rc3wz4k I’m not sure if I actually have that compression ratio because I didn’t measure the piston to valve clearance. This is my first build and I was making somewhat educated guesses with the parts I chose. I’m currently just running premium pump gas.

Or do a compression test.

@@user-tl4rc3wz4k nice, what all do you have done to yours?

@@MishMashMoto what is a jigowatt?!?🤯

@DustySteel In the movie "Back to the Future" Doc said it instead of Gigawatt.

@@MishMashMoto Marty replies with WTH is a jigowatt?!?!🤣🤣

@@DustySteel I got it now! Sorry I missed that one. It flew over at 40,000' 🤣

@@MishMashMoto no worries! I grew up with those movies. I found it very ironic that the bike went 88 and my trip was also at 88.🤣

@@Austin_Younts thanks for watching!! I’ve got a few videos showing what it takes.

@@DustySteel can you tag me in the first video? I need to watch to get the job done.

I daily my bike every day to work and it sucks to only go 60 on the highway

@@Austin_Younts th-cam.com/video/ZgTKhg4ZELo/w-d-xo.htmlsi=LUzdVB5p0Qod4CJa

@@Austin_Younts hopefully the link works! I like your Jeep! I need to start working on mine again. I have a 97’ 2DR XJ with 35s and a IRO long arm kit and OTK steering.

Presuming altered final drive ratio?

@@entropicprogression-nc7qi doesn’t need to be on this bike. I passed a speed trap though that tells you how fast you’re going and it was accurate. I was passing cars on the highway though so I was definitely going fast lol.

Thank you for watching!

It runs off the front wheel, so there is no change if the same size front tire is used.

Ah, roger that. I have one of these and was unaware of that factoid. Good to know. I actually went the other direction and 15T front and 51T rear. She’s a campground/camping bike with 2nd gear wheelie potential and can hold 2nd up 8% grade at 15 mph with 195# rider and 25# gear on back rack, whilst sounding like an incognito lawnmower. Small bore Honda for the win.

@@613Builds works great! With the mods and a 18t front with the 46 in the rear 1st gear will go to 15mph, 2nd gear will go to 30mph, 3rd will go 50mph, 4th tops out at 70mph and I’m still topping out 5th gear at 88mph.

@@banditoo7 thank you so much for watching and subscribing!!

@DustySteel just got mine today. Secondhand 2015 model. I recently sold my Royal Enfield Himalayan and looking at getting the new 450 model in March. This XR will see me through until then. We are just coming into spring here and I live near an ocean beach with heaps of sand dunes :)

@@banditoo7 nice, that sounds awesome!😎 👍

@@Xr150hobbys thank you!! There’s no way a stock XR150L would even come close to keeping up. I can go 30mph in 2nd gear, 50mph in 3, and 70mph at the top of 4th.

@@DustySteel that’s has to be scarey Where you get the kit from

@@Xr150hobbys I wasn’t scared but I like going fast. Kit? I’m not sure what part/parts you are referring to. I explained everything in the video.

@DustySteel ok I’ll play video back. I personally don’t like going fast anymore.i would like the bike to do 70 . I keep going back and forth on if I wanna do a big bore kit and there not enough info on witch parts are the right ones

@@Xr150hobbys being able to do 70mph is one thing; being able to do 70mph consistently while not being at the top of rpm’s is another thing. Now I can cruise at 75mph and only be at half throttle so I’ll get better mpg. I can now just put a smaller front sprocket on if I want to have a ton of low end power.

@@TinShackVideos I got the intake from Silicone Intakes .com and put a UNI foam filter in it.

@@MishMashMoto I’m going to test it soon.

@@DustySteel 👍🏼 Wear all your safety gear at those speeds!

@@MishMashMoto for sure!!👍

@@TinShackVideos thank you and thanks for watching!

@@bighg1017 thanks for watching and for the compliment! I wouldn’t wait because it would be fine for all part to wear in at similar times while everything is till new. I think really it just needs top end. If I were to try again I would buy a 34/29 BRT head and put a 30mm PWK and bigger header/exhaust. Then I would change the front to a 18t. That might be enough and if not then you could add a bigger piston. I started with the carb and 70mm piston and it just didn’t have a big enough head to flow that much air at the higher speeds. Still probably would’ve had enough power at that point to add the sprocket but I wanted it all to flow well and then be able to change gearing.

@@MishMashMoto thanks for listening! I’m glad that you like it!😎👍

@@MishMashMoto do you need some jets for that PWK carb? I still haven’t sent that piston yet and can add the jets that you would like to try with it.

@@MishMashMoto I don’t remember if I put the extra ones that came with that carb or not.

@@DustySteel I will take anything you don't want and wish to send us. Made a video for you this morning.

@@MishMashMoto just let me know what sizes you would want to try and if I have extra ones then I’ll send them that way. Oh cool!!

@@613Builds thanks for listening!

@@Ummmmmkay88 thanks for watching! Already have this bike.

@@613Builds thank you! I’m getting there, slowly but surely lol.

@@Innovative3dprintingllc I pieced everything together and if I were to do it again with the knowledge that I have now I would do it differently. These parts aren’t a “need” necessarily. I’m not an expert. The bike has more than enough power though and I max out rpm’s with a 17t front and a 46t rear @80mph not tucked. The bike has plenty of power to go faster and with the 36/31 valve head I technically should have a 32mm carb with maybe a 72mm piston or larger. Even with the head being too big though I have plenty of low end power for the street. I believe that this bike is capable of speeds way beyond 80mph and I’m still testing.

@@DustySteel awesome! Any chance of a link to the super head? I looked but couldnt find anything. Appreciate the help!

@@Innovative3dprintingllc I would but SXParts doesn’t have anymore in stock. I can direct you to a company on the FB XR150L group Abe… they sell BRT big valve heads also known as “super head” along with their kits. This XR150L has basically the CR 150 engine with minor differences.

@@Innovative3dprintingllc you can also just search for BRT Racing CRF 150.