SOHC.co.uk Forums > CB350/400
Carb-to-head manifold "insulator" removal - SUCCESS!
mattsz:
Sorry if this is a lame question...
My carb manifold rubbers have hardened up dramatically - I've decided to remove them and either try some softening alchemy or buy new - but I can't loosen the screws. I'm nervous about stripping out the heads, so I've been cautious to avoid using too much force on ill-fitting "phillips" screwdrivers, the best fitting option I've found so far is the Honda tool kit large cross-head bit and the cross bar that fits it for leverage (see photo), but that applies a slow steady torque, no way to "shock" the screw loose with that tool.
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Penetrating oil doesn't seem to penetrate. I tried heat on one of them; no joy but I don't know how effective I was - I used a heat gun and the head really absorbed and dispersed the heat from it. I could try that for a longer time. I didn't use a propane torch, as I'm worried I'll damage the rubber. Even if I had one, I don't think I could fit an impact driver in there and still swing a hammer (the engine is in the frame).
Any tricks to this, other than the usual generic suggestions?
robvangulik:
Find a longer bit for your impact driver....and buy some JIS screwdrivers.
Bryanj:
Make sure they are JIS impact driver bits
mattsz:
--- Quote from: robvangulik on June 08, 2020, 01:06:36 PM ---Find a longer bit for your impact driver....and buy some JIS screwdrivers.
--- End quote ---
Rob - as I said, I don't have an impact driver. If I did, how would a longer bit help?
There's only about 6 inches between the screws and the frame. How do you place an impact driver and strike it in that space?
robvangulik:
Sorry, I misread that a bit, BUT an impact driver is, in my opinion, a tool you need to have. And you don't know before you try if it would work in this case and space. I think it will....
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