Seafoam
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Been looking at solutions for decarbonisation when I got recommended seafoam.
I’ve personally never heard of it and wondered if any of you had any experience?
Would it eat up at your bottom ends bearings -
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@Calum I just wanted to what people’s take on it
to be honest thought it could’ve been helpful.
E.g. if like me you don’t you don’t have any coolant to replace what you bled or a torque wrench for disassembling and assembling the top end so I could go about inspecting what my first year of ownership has done to it.
75% of the time the pin and grin clear out method has worked pretty well in the but now is that 25% it’s not working.
Bike feels like it’s running at half power and rarely seeing 9k. Even seeing 100kmh seems out of the question more often then not and even then I really have to coax it into happening as opening the throttle wider makes bugger all difference.
The funny bit is she’ll still start from cold first kick and idle at about 1.2k
https://youtu.be/ze1LyHYnaPY
Here’s a video of me on a empty bypass 3rd/4th gear and also going down a slight decline to help things.
*note I do not condone doing filming with a “gopro” like this however it shows exactly what’s going on with the bikeI’m taking the expansion chamber off and checking the valves properly aligned and also going to try and inspect as best as I can the state of inside the barrel, see if I can use a finger to feel for any blatantly obvious pitting damage or general carbon build up. If that doesn’t make much difference then I’ve got a to do list courtesy of Haynes of things I need to check.
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Sure, but remember, Yamaha designed these bikes to be commuters. So it designed to operate on autolube where you are just pottering around, where the RE/X models didn't rev out fully. And that done me years of faithful service!
Yeah nice. I have not had any issues personally and I ride like a granny everywhere.
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Basically it’s not to much of an issue, I had my DEP on as a daily commuter for nearly 3 years, you technically lose power as the area inside the expansion chamber decreases from Carbon build up, but it’s negligible.
It sounds like warn piston rings if it’s loosing power, I threw a new piston And importantly Rings, in my old barrel at 14,000 miles covered, and that bump in compression restored enough power. Take care of the fuelling on a DTR and the barrels can go for 20,000 + miles.
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Basically it’s not to much of an issue, I had my DEP on as a daily commuter for nearly 3 years, you technically lose power as the area inside the expansion chamber decreases from Carbon build up, but it’s negligible.
It sounds like warn piston rings if it’s loosing power, I threw a new piston And importantly Rings, in my old barrel at 14,000 miles covered, and that bump in compression restored enough power. Take care of the fuelling on a DTR and the barrels can go for 20,000 + miles.
See I laughed at people for saying your exhaust could be a cause but then after a while I just gave up and thought I was being ignorant. So yea thanks for that G. If it weren’t for that I’d probably have pulled the dep off and spent a day in isolation cleaning the it
Everything about what you said would make sense too. At first she just wouldn’t rev past 8-9k like hitting a limiter and now powers dropped to a point you can’t stay in the right rev range for powerband in fourth
60mph genuinely is her speed limit at the moment
It also makes some fair sense as I got her 15,000km, she’s just hit the 25,000km mark and I don’t know when her last rebuild was as Unit 5 never did it. I don’t think when she was in France she saw any kind of regular use either, it had all its original documents, receipts and everything else (which supposedly the French never have, so you'd think he cared about the bike) and everything about it including the dry rotted front tire was fresh out of the factory in 1998. I remember Tony at Unit 5 telling me it’d been used by an old french guy for tootling about on and I’m pretty sure the documents only a couple previous owners so I’ve always wondered when she’d die. I thought 150 miles on A roads and knobbly’s before I went to uni last year -
Dt’s don’t die! They just slowly fade away (if they’re treated right)
any 2 stroke does.
Which is the issue, did the power loss come on slowly over time or just happen? Slowly would suggest normal wear to rings like the man said...
I’m wary of anything that claims to fix without work. Apart from that teralyne/whatever they pump through 4 strokes. But 2T are different, like you say, anything that breaks down carbon is not likely to be lubrication friendly to your bearings...
