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CB350/400 / Re-threading carbs?!
« on: December 27, 2021, 01:43:08 PM »
Hey everyone!
I'm in the preparation and research phase for my carb rebuild for my 400/4.
These carbs have given me all sorts of headaches since I got this bike but truthfully it was my lack of knowledge that was the main culprit.
In a previous attempt at revuilding them I changed all the jets and tubes etc... On one of the carbs the idle jet thread got brittle and some bits fell into the conduct. It also meant that I couldnt get the jet to sit properly. The threading got so loose in fact, I didnt feel any resistance when screwing in the jet and I crushed a few jets thst way.
I ended up taking the damn thing to a mechanic near Paris specialized in 400/4. She managed to patch it up, saying that it was just a fix not an actual repair and I should be weary with the idea of rejetting that carb.
Fast forward today where I indeed want to rejet with originals that are graciously donated by Alan Kelly (the real MVP ). Now I don't know what was done in there but for the sake of the argument I'll assume a crap ton of red loctite.
If I remove the jet it is propable I'll find my mangled thread.
My question is do you think I could repair it with a helicoil?
Or too much of a risk of cracking the jet tower?
Cheers!
Sent from my Mi A2 using Tapatalk
I'm in the preparation and research phase for my carb rebuild for my 400/4.
These carbs have given me all sorts of headaches since I got this bike but truthfully it was my lack of knowledge that was the main culprit.
In a previous attempt at revuilding them I changed all the jets and tubes etc... On one of the carbs the idle jet thread got brittle and some bits fell into the conduct. It also meant that I couldnt get the jet to sit properly. The threading got so loose in fact, I didnt feel any resistance when screwing in the jet and I crushed a few jets thst way.
I ended up taking the damn thing to a mechanic near Paris specialized in 400/4. She managed to patch it up, saying that it was just a fix not an actual repair and I should be weary with the idea of rejetting that carb.
Fast forward today where I indeed want to rejet with originals that are graciously donated by Alan Kelly (the real MVP ). Now I don't know what was done in there but for the sake of the argument I'll assume a crap ton of red loctite.
If I remove the jet it is propable I'll find my mangled thread.
My question is do you think I could repair it with a helicoil?
Or too much of a risk of cracking the jet tower?
Cheers!
Sent from my Mi A2 using Tapatalk
