Stoffregen Motorsports Posted December 7, 2016 Report Share Posted December 7, 2016 Anyone ever seen a broken side draft carb before? It happens when people get overzealous while tightening the carb onto a soft mount. I broke one myself about 20 years ago and I had one in the shop a couple weeks ago. Just figured I'd share. Broken carb Quote Link to comment
Stoffregen Motorsports Posted December 7, 2016 Author Report Share Posted December 7, 2016 Welding the carb body is a delicate procedure. If done right, it can be a permanent fix. 3 Quote Link to comment
Stoffregen Motorsports Posted December 7, 2016 Author Report Share Posted December 7, 2016 While installing the throttle plates, I made sure to get them oriented in the bore as good as I could. With any luck, the engine won't even know the difference, but if the bore shifted during the welding, it might never idle down enough. This one turned out pretty good. The pics are blurry, but you can see the daylight around the throttle plate. As compared to the other carb with proper idle, the amount of gap is about equal. All back together Installed on a fresh Rebello 2300. Dynoed at 220hp In a beautiful car too 4 Quote Link to comment
Dolomite Posted December 7, 2016 Report Share Posted December 7, 2016 Damn man, that's like sorcery. Crazy to think shit like that happens. 3 Quote Link to comment
]2eDeYe Posted December 7, 2016 Report Share Posted December 7, 2016 Nicely done, great tech and a fantastic looking dime. :thumbup: 1 Quote Link to comment
docbainey Posted December 7, 2016 Report Share Posted December 7, 2016 Stoff, I thought the mukinis where a cast zinc? Which for all practical purposes was non repairable? You show otherwise. Do you mind sharing the process used to repair? TIG I imagine but what gas (argon?) and filler rod? Thanx! Great work by the way!! Quote Link to comment
Stoffregen Motorsports Posted December 7, 2016 Author Report Share Posted December 7, 2016 It's just pressure cast aluminum. Tig with Argon, soft rod. Precise flame control is a must though. You can melt through very easily. 1 Quote Link to comment
510maniac Posted December 7, 2016 Report Share Posted December 7, 2016 Glad to hear you saved one more Mikuni 44phh carb. There getting harder to find these days. I have 3 sets myself. 2 pairs I have, i bought them for $400. Yes, 2 pairs. I felt like the luckiest man alive lol They needed work though that's for sure :) Quote Link to comment
G-Duax Posted December 8, 2016 Report Share Posted December 8, 2016 510maniac, you are a hoarder.......... Quote Link to comment
KoHeartsGPA Posted December 11, 2016 Report Share Posted December 11, 2016 Stoff, great work!, i love it :) 1 Quote Link to comment
Stoffregen Motorsports Posted December 11, 2016 Author Report Share Posted December 11, 2016 Thanks. 1 Quote Link to comment
That4doorKiD Posted January 8, 2017 Report Share Posted January 8, 2017 Awesome! That took some patience I bet. And looks like new wiring in their Quote Link to comment
Zephyr Posted January 9, 2017 Report Share Posted January 9, 2017 Nice job that's a touchy repair keeping the heat at a happy medium and getting it clean. Not familiar with the mikuni carbs looks like you made a backing plate you left on incorporated into the repair. I like seeing parts saved Quote Link to comment
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