SOHC.co.uk Forums > CB350/400
Front pipe gaskets - is nothing easy ?
McCabe-Thiele (Ted):
I have had a bit of a hunt round amongst my spare parts and found what look like some sort of Asbestos replacement type gaskets bound with copper wire spiral binding.
I can't get my calipers into the exhuast port to measure the diameter its about 38mm at its narrowest being tappered from about 40-41m.
In the photo are two that are too big to fit they measure 39.7 mm for the enclosed copper gasket & 39.3mm for the open sandwich one with the blue filling.
Looking on the internet there are also alloy ones available - like this one below.
I suspect the two copper gaskets are for the 500.
https://www.ebay.co.uk/itm/283814932934?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649
The exhuast port has no paint on it so that's not causing the problem - I've given the port area a clean & removed what little paint that was - still too tight except of course the white soft gaskets.
.IMG_20220118_131444 by Macabe Thiele, on Flickr
Laverdaroo:
Ted, I used the ones on the left to do the 400 and they were really really tight to get in but after a whizz round with a bt of wet n dry and a gentle persuede with a rubber mallet and a drift/socket they 'plopped in' quite nicely. I bobbed a bit of 'ginger grease' round mine just to aid them as they were such a tight fit.they came from DSS also.
Keep persevering buddy they'll go with a bit of a fettle ;) 8)
McCabe-Thiele (Ted):
I've already started using some 180 grit to get one in as a trial - it just needs a bit more fettling.
Laverdaroo:
You'd think y
they'd just bob in but like i say, I had a bit of faffing to do to get them in. Keep at it mate. ;)
McCabe-Thiele (Ted):
I have a small soft handled Posidrive that I've put in the drill chuck to make a hand held lathe type arrangement so I can end up with a round gasket as it will hold the gasket nicely.
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