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Topics - THUNDERDOWNUNDER

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1
Announcements / 400/4 fuelTap Filter .
« on: April 15, 2023, 07:30:43 AM »
Hi does anyone know where to get the rubber seal for the Filter assembly without buying the Whole set . Thanks .

2
CB350/400 / CB350 Handlebars
« on: February 23, 2021, 12:07:59 PM »
Would  anyone Know if CB350f handlebars will fit my Cb400f ? I am looking for a set but having no luck .DSS has not got any same with CMS . I would consider a good second hand if anyone has a set . Thanks for reading !

3
CB350/400 / 400/4 Regulator rectifier wiring m
« on: February 06, 2021, 10:32:41 AM »
Just bought new combined regRec unit from DSS . Wiring diagram not really clear how to hook up .main plug 3 yellow 1 red I green . Plus 1 BLACK WIRE splits into 2 . Question where do these go ? Thanks if anyone has fitted on recently .

4
CB350/400 / CB400/4 Front Wheel Speedo Drive
« on: November 16, 2020, 05:25:35 AM »
Good morning all , I took my front wheel off to fix a flat tyre and ended up taking the Brake Disk off to clean and paint centre .Well while I was at it I decid to clean up front brake caliper . All that is now done  but just wondering if I should grease wheel  bearings and grease or Oil up Speedo Drive .  I had a go at undoing the Centre bolt but after 45 years I won’t budge . Any ideas guys or should I just leave it alone .ie if it’s not broken leave it alone . Thanks for reading .

5
CB350/400 / CB 400/4 Front Disc need ideas for Cleaning up .
« on: November 07, 2020, 06:12:55 AM »
Lots of Dodgy ideas on YouTube so thought I would ask the experts . Help !

6
Project Board / Honda CB Disc Rotor Cleaning
« on: November 07, 2020, 06:07:39 AM »
Lots of different ideas on YouTube but  I thought I would ask the Experts for Help .    I have 75  4004             

7
CB350/400 / Regulator/rectifiers Wireing need HELP
« on: May 23, 2020, 08:29:35 AM »
Bought The CB400/4 with reg/rect off Honda integra 1985 it says . Birdsnest of wiring so put new harness on and new reg/rect  to suit . Upon  fitting blows a fuse and said reg/rect is letting current both ways on one of the diodes . The Old reg/rect which is testing ok and came with bike has an extra wire than the DS one I bought . Would any one know if I can use it on the new loom and which wires go we’re ?thanks if you can help .

8
CB350/400 / BUTCHERD 400/4 STARTER MOTOR
« on: May 22, 2020, 07:35:53 AM »
This is the Starter Motor I got with the  bike a few years back .Dont know what the Home Made holes in the back end are for but I think it is knacketd !

9
CB350/400 / 1975 400/4 reg/rect
« on: May 21, 2020, 09:22:32 PM »
Well , while I’m on a roll . New regRect has a diode problem now . It’s letting current both ways on one diode .  Just wondering if it’s going to damage the battery ? Help !

10
CB350/400 / 400/4 flat battery
« on: May 21, 2020, 09:14:53 PM »
Bought bike a few years back (not running ) and on handing over cash got told (oh! there is a small short ) Well after putting on New battery new wiring loom new fuse box new reg/rect the Bloody thing would start then battery would go flat after a short ride . So last time  it happend  a mate says do you think it’s the starter motor ? No I says as it starts the bike . Well guess what . I changed the starter motor and it must have been the propblem as it turns over twice as fast now and doesn’t let you down after a short ride . Also on inspection some one had drilled two small holes in end don’t ask me why but that must have been the problem . So advice  is look for the obvious and don’t buy a none runner unless it’s cheap (and mine wasn’t ) Happy riding folks ! PS flashers would also freeze when starter gave up ghost making you think it was the battery . No it was the flasher unit . Talk about coincidence Agh !

11
CB350/400 / 400/4 carb balancing
« on: May 21, 2020, 03:36:21 PM »
Think they need a balance . Sluggish takeoff then whoosh! Anyone know a good brand of vac gauges or ones  to avoid ? Thanks in advance!

12
CB350/400 / 400/4 Battery not charging
« on: November 24, 2019, 05:01:12 AM »
Ideas needed for fix . At the moment I have to charge my battery off the bike . Fully Charged it lasts about Half an hour . Starts on the button then looses power fast no starter and indicators stop . If I fully charge and leave it over night it drains . So what’s wrong Guys ?

13
CB350/400 / 400/4 Exhaust Fitting Info needed
« on: October 24, 2019, 11:12:42 PM »
I have inherited a set of replacement Pipes and collector box (Silvers ) for 400/4 . All brand new but no instructions . The pipes are marked 1 2 3 4 . My question is which way round do they fit the collector box ? I see on one side of said box has a fitting for a retaining bolt ( I don’t have ) The other three slots have nothing to hold pipes . So looks like press fit ! Any help welcomed.

14
Has any one tried these ? Thanks info needed !

15
CB350/400 / 400/4 Crank Oil Seal
« on: July 19, 2019, 08:50:33 AM »
Opps , orderd oil pump seals to fix oil leak . Well after cleaning underside of pump ext just found oil is coming from lower crank cover Agh ! Having said that I find I have said crank oil seal ! DSS 91201-323-005P .Question is can I fit this seal without splitting crank cases ? Help !

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