Nova Scotia Mike Posted September 17, 2016 Share Posted September 17, 2016 So my brother is restoring a '70s Triumph he bought in boxes. The unknown PO had the frame sandblasted and painted, but there is still sand evident in the frame. This is an oil-in-frame bike with only slinger filtration so any residual sand is going to knocker the engine. What's the best way to clean out this frame and get rid of the sand? Shop vac? Flush with kerosene some how? Something better? thanks Quote Link to comment Share on other sites More sharing options...
Furbird Posted September 17, 2016 Share Posted September 17, 2016 The sand is going to be stuck in the oil that was in the frame, so short of washing it out with something, I don't know how you would fix that. I would just convert it and be done. Quote Link to comment Share on other sites More sharing options...
XXitanium Posted September 17, 2016 Share Posted September 17, 2016 Iso-propyl alcohol (fuel line dryer) as a solvent to reduce the oil and clear the oil/sand out? I'd think that wouldn't hurt the paint. Quote Link to comment Share on other sites More sharing options...
superhawk996 Posted September 18, 2016 Share Posted September 18, 2016 Washing it out with solvent should get it out, but I'd install a filter if possible. If 'slinger filtration' means a centrifuge they can be very effective, but I'd still want a filter. Quote Link to comment Share on other sites More sharing options...
paul99xx Posted September 18, 2016 Share Posted September 18, 2016 can't imagine it being a big deal, flush with kero or petrol really well, then oil to get the kero out. Then run it for a short ride and change the oil. Quote Link to comment Share on other sites More sharing options...
paul99xx Posted September 18, 2016 Share Posted September 18, 2016 Just thinking, how about pouring kero out of frame through a white rag so you can see how much sand is coming out, repeat until no more comes out. Quote Link to comment Share on other sites More sharing options...
Nova Scotia Mike Posted September 18, 2016 Author Share Posted September 18, 2016 Thanks all. He's planning to wash the inside of the frame out at a coin op car wash, then run kerosene through it repeatedly until no sand is coming out, then flush cheap oil through it to get rid of the kerosene. Local vintage triumph guru is heavily recommending against adding any sort of in-line filter. Says the slightest restrictions have caused catastrophic failures in the past. Quote Link to comment Share on other sites More sharing options...
superhawk996 Posted September 18, 2016 Share Posted September 18, 2016 2 hours ago, Nova Scotia Mike said: Thanks all. He's planning to wash the inside of the frame out at a coin op car wash, then run kerosene through it repeatedly until no sand is coming out, then flush cheap oil through it to get rid of the kerosene. Local vintage triumph guru is heavily recommending against adding any sort of in-line filter. Says the slightest restrictions have caused catastrophic failures in the past. I'd shoot some degreaser in before the water and let it soak for a bit, any left over oil in there is gonna hold on to the sand and be hard to remove. If it's possible to get a bottle brush in there I'd do it. Spraying and flushing won't get it all out unless there's a lot of flow or pressure put though it and it's likely that you can't achieve that. If the oil pump is that minimal it would seem like something to modify while it's apart. Maybe the issue is with people adding a filter before the pump and starving it.-? They push better than they pull. It could also be an issue with filters draining when parked and oil starving that way. You can add a filter in the return line, it's done on a lot of old bikes. Map is the name coming to mind. Filtered before or after it goes through the engine is better than not at all. Quote Link to comment Share on other sites More sharing options...
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