Yamaha DT175 w/ Big One Silencer First Ride (It Rips!) 

Really appreciate the comment man! I've got something up my sleeve for 2021 ;) Might do a teaser video in a couple weeks, just still getting all the parts together.

40 year old crank bearings seems to be the answer to that one. I'm rebuilding the engine ground up right now, guess we will see if that's what it was :)

@@kosmoto Oh geez, I was hoping that wouldn't be the case. I didn't want to tear it down that much again. Let me know how that goes

I love it! It feels like a completely different bike. I'll go over it in another video as well, but the silencer alone seems to have made a huge difference! Definitely a lot more responsive and feels way more unrestricted. Feels like she's breathing a lot better. I do need a top end rebuild I think, at least I think that's the cause of that rattle noise (piston slap), but it still runs muuuch better than it used to, really can't wait to ride it on the trails

Thank you Sam! Haha I honestly have no clue...I am still trying to figure that one out myself. I've had it ever since I got it. I know mine could use a top end refresh but you're also not the first one to tell me yours do that too. I think they just...sound like that lol! I will investigate further and if I come up with any info I'll be sure to share.

It's normal for them

Crankshaft probably not factory balance

Wrist pin bearing, change it with the piston/rings..

You're likely right! Going to look into the bottom end as soon as I move

Sorry for the super late reply, I don't check the comments on this channel enough. I have only ever ran the Big One silencer which was quite a big improvement. The silencer on these bikes is the most restrictive part of the exhaust system so even just swapping that out you'll notice a difference. I have not ran the big one chamber yet. I've since also bought a cone exhaust from Colombia for my DT175 motard build which will have an RT180 engine (essentially the same). TL;DR: at least get the aftermarket silencer, but pipe will help as well. Pipe will likely benefit from a 28mm carb and a light porting job as well

Thanks mate :) I ordered the silencer and it looks 👌👌 Thanks for the reply!!

The bike is much more responsive now, it's crazy. At 1/4 throttle it's already booking it and I can WOT it and she just GOOOOOES. I didn't really beat on it so the highest the temps got were 325 while ripping, and around 280 cruising. It wasn't the warmest day, I'd say around 65 degrees. I am running 32:1 Yamalube, #25 pilot jet (as opposed to stock #20), 145 on the main, and 1-1/4 turns out on the air/fuel mixture screw. That's with a de-restricted airbox (removed that holed cylinder that slips over airbox underneath the seat) and of course the Big One silencer.

StacheCam Definitely gotta get yourself a monoshock 175 when the time comes! I’d love to help do it up proper as well.