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Post by Lucass2T on Feb 18, 2024 18:53:15 GMT -5
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Post by 90GTVert on Feb 18, 2024 21:02:04 GMT -5
Have you seen this one yet?😁 Watched it yesterday. I could have told them their conclusion before they started, but it was cool to see a TMAX on the track in the US with good riders. I had to wonder why a 530 kit and not a 560 kit and I wish they added a dyno result after the BBK and cams. |
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Post by captincvmn on Feb 20, 2024 13:08:37 GMT -5
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Post by 90GTVert on Feb 20, 2024 15:13:15 GMT -5
I have. Thanks for thinking of me though. Lucass posted about it as well in my T2 thread, which I just moved into this one. |
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Post by 90GTVert on Feb 22, 2024 19:57:27 GMT -5
At about 7,000 miles and one plug, it was definitely time for some new rubber.   I finally got to try out the No Mar tire changer.  These Battlax scooter tires are the reason that I wanted a tire changer after years of using irons. Last time I was in the floor crawling on the tires like a spider monkey and wishing I had more arms trying to get these mounted. Easily the toughest tires I’ve ever changed. Very stiff and they fight you if you’re trying to keep them in the drop center. The front tire went fairly well. Not like the No Mar videos kind of well, but relatively painless. The back tire was no fun. I had to fight the old one off and use tire irons to help me a little. Then I couldn’t get the tire on with the mount bar with the changer. I wound up just using it as a stand to finish with irons. Overall, I’m glad to have it. Being on a stand that holds the wheel and not on the floor or workbench is a nice improvement and the mount and dismount is definitely easier even on the tough tires. With tires not made by the devil himself, it should be pretty simple. Oh, and the bead breaker works very well.  Still gotta balance them and change the gear oil and clean some of the scoot that can’t be reached with the tires on, but the hard part is over. |
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Post by Lucass2T on Feb 23, 2024 0:14:54 GMT -5
Thats a nice upgrade to the shop👍
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Post by 90GTVert on Mar 14, 2024 20:35:24 GMT -5
I rode around the swamps with my sport bike friend today. On the way back, we rode through a town for probably 15 minutes. Shortly after leaving the town, I was cruising around 55-60 behind traffic and it started to stumble and bog out if I got into the throttle. Felt exactly like TMAX fever.
The thing is, TMAX fever is supposed to be cured by the later model fuel pump. I installed that about 12,000 miles ago IIRC and have not experienced fever symptoms till today.
I was at 1/4 tank and it was just after riding around town on a 75 degree day, so that seems to match past experiences with fever. Hoping it was a fluke, as even with that original pump, it rarely happened. Couldn’t seem to predict it. I could ride around ocean city for an hour in traffic on a 90 degree day without issue and then get it on a 70 degree day after a brief slowdown.
The other thing that has started happening is bogging if I hit the gas hard at low speed when the tank is low, before the fuel light comes on. Clearly sloshing fuel away from the pump from the way it acts. Maybe I can chalk that up to the fact that it has way more get up and go since mods so I probably couldn’t rock the fuel enough to do it in the past. Not really an issue, but doesn’t give me the confidence to run it down to the fuel light often.
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Post by 90GTVert on Apr 28, 2024 22:15:23 GMT -5
It was over 80F today and I took the TMAX to a bike meet with a few cars as well at noon. Sat around the parking lot for over an hour.    All of the bikes went one way to the beach, down a major highway. A friend on a 150 and I went the back way sort of and met another friend on a 150 along the way. The TMAX ran fine, till we met the other guy at his house and sat there about 20 minutes. Then it ran alright for a few minutes and started surging like the old TMAX Fever. I wound up holding up 2 150s with my 500 bucking and topping out at 30 for quite a while. Eventually we got near the beach and it cleared up quickly in the much cooler air coming over a bridge. Then it ran fine to meetup with everyone else again and ride to another beach town down the highway. I wound up in a group of 4 with 3 guys I don’t know because one bike shutoff and I had tools and a jump box so I figured I should wait with them to see if it fired up again. So it was me, a Harley, a CBR600RR and a Hayabusa. We got to the spot where everyone else was and missed the turn so we went up and turned around. They all sped up and it was briefly downhill on the bridge you’ll see I the next pic background. I went past the busa doing over 100 (my speedo is 50MPH off of course). Once we parked he said that’s a moped? I just said yeah. He said you went past me and I was like WTH?!? LOL I’m out here representing for scooter kind. 😁      We sat out there for maybe 45 minutes to an hour. Most others got drinks. The 2 150s and I headed down the highway. They split off to get food and I went to head home. It’s a busy area in beach season and there’s traffic. Just as I got off of the highway it started bucking again. I tried riding the shoulder a bit at 30 or so, but it felt sketchy so I wound up pulling over. My plan was to let it cool and then make the hour and a half trip home. That didn’t go well. It actually got worse after sitting more. I think I just gave it time for heat to soak into the tank from the engine. Then it wouldn’t even idle. Great. I took off a little panel while I sat and left the gas cap off to help it cool. I could feel heat if I put my finger in the gas tank. Not really hot, but warm at least. Who knows how hot it would be if I could feel the bottom near the engine. I wound up sitting for an hour to hour and a half before finally would run again.  Once it got going, it still faltered. I stopped at the nearest gas station for 1.75 gallons of cool fuel. Then it ran fine. I rode the whole way home at 90ish whenever I wasn’t in traffic and it was fine. Got home and the fuel tank still felt cool-ish. Not sure what I’m doing now. I dunno if the pump is going or it just needs a heat cure. The pump didn’t sound right when it was hot, sort of off and on when it primed at key on. Never throws a code with TMAX fever. Runs totally fine when beat as long as you don’t stop and let it heat soak. Could be some sort of vapor lock or something. I was thinking about trying to find some vents of some sort to add to nearby panels for cool air to get in or heat to escape. Not really into changing the appearance... but if it works... It’s a poor design with the tank over the engine and all enclosed in fairings. |
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Post by Lucass2T on Apr 29, 2024 6:13:19 GMT -5
If there is a way to measure amp draw from the pump you could check if it is struggling while getting hotter and hotter.
Then do some venting, heat blocking etc and see if that does anything.
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Post by 90GTVert on Apr 29, 2024 6:32:19 GMT -5
If there is a way to measure amp draw from the pump you could check if it is struggling while getting hotter and hotter. Then do some venting, heat blocking etc and see if that does anything. I just figured if I could check temp that would pretty much do it. It's clear that it's heat related. I guess pump check would tell me if it was that the pump malfunctions or if it's something else going on, but it seems like the end result is still that I have to lower temp. Maybe a new pump would deal with the heat better. I didn't have this issue for a long time after replacing the pump... but then I don't tend to go park and sit around when I ride. Normally I pretty much roll the whole time I'm out. I've only looked at amazon so far, but the vents are less plentiful than I anticipated. Most of the car stuff would be huge on a bike and many are purely for appearance. I did find the little vents below. I'd have to cut them to make them actual vents though. I figured there was stuff that you cut the panel and insert, possibly along with double sided tape. At least amazon stuff is purely double sided tape from what I've looked at. I also don't want stuff that looks cheesy and crappy so I'm not sure how this would turn out. amzn.to/3WlXQPeThe quality aftermarket stuff that actually functions is quite expensive, and again huge from what I've found so far. Fender vents looks small on a car, but this one has a template on the page so you can see how big it really is. I'm not paying $200-300 for some little vents anyway. www.roushperformance.com/products/2015-2023-roush-mustang-fender-vent-heat-extractors-painted-gloss-blackSome old pics of it apart so you can get an idea of what's going on with the fuel tank and see kinda how heat would be trapped by all of the fairings around it.    |
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Post by aeroxbud on Apr 29, 2024 7:56:19 GMT -5
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Post by 90GTVert on Apr 29, 2024 11:41:38 GMT -5
I thought about those. I was hoping it was easy to find something a little more visually appealing, but not much luck so far. Considering trying to check temps occasionally. Then take off a panel and see if it does anything. If a whole panel doesn't change much, then venting may be hopeless. |
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Post by 90GTVert on Apr 29, 2024 13:14:53 GMT -5
I was trying to be smart for a change and see if Yamaha had solved the problem for me in later years in any obvious way. I looked at gas tanks from later models and don't see any obvious anti-heat measures there. I'm not noticing heat shielding on fuel hoses when I can find pics or video. The body panels don't appear to be open/vented. 🤷♂️ Since anything I can find touts the newer fuel pump (that I used 3 years ago when replaced) as the cure and no other changes, paired with the fact that everything was fine for 3 years after a pump till just the last ~month... I'm gonna replace the pump. I could do pressure tests, but who knows how they'd vary when hot so I don't think I'm even going to waste my time. It was a total surprise to me when it did it mildly a month or so ago because I've had zero issues since the replacement. Getting worse and worse is probably telling me that the pump is failing to some degree, at least when warm. I know that I stopped in TN on hot days for 30 min or and hour and never had it happen. Whether Yamaha sees it as a problem or not, the heating of the fuel tank bugs me. It can't be good for anything. Rather than cut holes in fairings that I like, I'm going to try something simpler. I ordered 12x48" of Thermo-Tec adhesive backed heat shield. It's thin and gets good marks on adhesion and effectiveness. Maybe covering at least the bottom as best I can, and hopefully the sides largely, I can see some reduction of temperature in the fuel. amzn.to/44jxZJCTotal cost around $260. The guy that got the meet together yesterday was pleased with the turnout and says he's gonna try it every 2 weeks. I'm dumb enough to test it again if I get the parts in. If anyone else is around the area, come out. We need a whole scooter squad. |
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sinfull
Scoot Enthusiast
Posts: 413
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Post by sinfull on Apr 29, 2024 19:31:50 GMT -5
Louvers or vents or whatever you want to call them are free and if done right you won't even notice them.
Vertical cut, 2 horizontal cuts and relieve scribe back of plastic and push in. Secure side with pieces of plastic, popsicle sticks and adhesive, and viola vented plastic that you hardly even notice. Use tape and don't mess up the paint too much and it will look factory unless someone really knows the bike. Use your heat gun on the fold line. You want fancy racing look, wire mesh on the inside and fold outward so everyone can see your fancy racing intake. want fast n furious, add l.e.d so you can see your racing intake 😆
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Post by polypheides on Apr 30, 2024 11:19:39 GMT -5
does it have a fuel return? maybe the fule returning is hot when engine is in running temp making the fuel in the tank hot you could add a cooling kit on the return if that is the issue.
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