Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - PatM

Pages: [1] 2 3 ... 14
1
CB350/400 / Re: Really bad cold starting. Ign or fuel?
« on: March 22, 2023, 05:17:25 PM »
Thanks for the reply- Yes, they are the originals and I did attempt to remove one when I had the engine out some years ago, but gave up as damage was about to occur! Ive tried the WD40 around them but no change in pitch.

2
CB350/400 / Re: Really bad cold starting. Ign or fuel?
« on: March 22, 2023, 12:59:18 PM »
Im just going to add my tuppence-worth as mine does exactly this fault and ive never been able to find the reason behind it.

It will start like it did when it was brand new after its been running- but leave it a couple of hrs till it gets cold, and its a real bugger. its also running week on one pot, yet when I did a compression test, it was the same for all 4. Ive even tried another bank of carbs- and same problem.

Now, due to ill health and such personal reasons- Its not turned a wheel for nearly 3 years and I think the cam chain tensioner may be siexed- as the nut/bolt has been repalced at some time and loosening it has little effect. My fear is- snapping off bolt/studs- but my next move would be to tape the top cam cover off and check the cam-chain and horizontal mark to make sure its NOT a work cam-chain.

3
CB350/400 / Re: Exhaust Headers
« on: March 11, 2020, 03:07:26 PM »
Im sure the Firm I spoke to estimated my dress and re-chrome at between £400-600- They were Ashford Kent. Around the same time, someone reported a BN exhaust system had sold to a Japanese buyer for £2k...which is somewhat ironic considering it came from there.
Considering my bike cost me £595...I didnt bid on it!

4
CB350/400 / Re: Exhaust Headers
« on: March 11, 2020, 08:53:35 AM »
i had  1 and a half sets of downpipes but they were beyong saving. i agree, get the rest of the bike sorted- Mine was 2 years back together when I bought the DSS set. It depends what standard of  finish you are comfortable with- I had difficulty finding someone in Kent to re-chrome them without all sorts of caveats and objections..Youd have thought i was doing them a favour!

5
CB350/400 / Re: Exhaust Headers
« on: March 10, 2020, 05:45:59 PM »
I had the same issue when I bought my bike for £595 10 years ago-Quite apart form it being a non-runner-(carbs) it was looking very tired and neglected.

The exhaust system was the original and rusty in the same places as yours-I was a bit more aggressive than you and used a wire-cup but the chrome was long gone and the result a lot better that when I started! But, it wasn't chrome and on a bored day-Id polish it with Solvo and it would look like chrome!

Then I saw my brothers 400/4 and thought I better do something with having gone through the 'get it re-chromed' hurdle-I bit the bullet and bought a replica from DSS for about £350 form memory.

Happy days! Few would notice the clamps and single-wall-except as the years have ticked by, its blued a bit and yellowed...straw etc. But I was very happy with it. Took a long afternoon to fit though, but it was one of his first and I think they are a better fit now.

6
CB350/400 / Re: Shock absorbers etc
« on: March 09, 2020, 05:23:35 PM »
Brian- The Bike when I first put it back on the road- You can see the HAGON stickers- far too harsh!
(hopefully the snap uploaded)

7
CB350/400 / Re: Shock absorbers etc
« on: March 09, 2020, 03:17:17 PM »
For what its worth- mine came to me with HAGON copy-shocks, they were a lot heavier in size and had an unsightly sticker on them. Anyway, my brother rode my bike and said it was a horrible harsh ride and sold me his old ones- he had replaced his with OEMs some years back- I was pleased he did as there was little wrong with his ones that a bit of elbow grease didnt solve and the ride is and has been for the last 7 years, soft and confortable and not frame/bone jarring!

The HAGON shocks were a bit of a thing when the OEM onse started to show age (1980's?)and racers wanted that harder feel. I didnt and dont.

8
CB350/400 / Re: Cb400 four indicator wiring
« on: March 08, 2020, 01:34:34 PM »
One wire?- well, they must get their earth return from somewhere. Id put one of the indicators across a 12v supply to find out where. Also, if they are LEDs- that can throw up another conundrum (they only allow current to pass in one direction as they are diodes) . You might have to put your own earth returns in and connect up. Case to frame connection is notoriously troublesome.
I glad Julie knows the wire-colours of the rats-nest in the headlight bowl!

Side comment- Not much bike-riding going on in kent today..just had hailstones...Spring will come, but no sign of it this weekend- bikes to ride, bikes to polish...

9
CB350/400 / Re: CB400F2 with different electrics?
« on: March 05, 2020, 06:37:01 AM »
It looks like someones upgraded the rectifier with an aftermarket universal one. No reason why it wouldnt work ok as its only taking the a/c and converting it to DC to feed the electrics. It probably got better control over the output that the old one as the shunt-windings of the regulator on the OEM can be hit and miss after 40 years,  compared with a buck-converter Solid-state equivalent on a modern type.

10
CB350/400 / Re: Bargain for someone
« on: March 01, 2020, 06:53:42 PM »
WTF,  has the world gone mad, its worn rusty and missing teeth

Sent from my SM-G950F using Tapatalk

So am I!!!!!!

11
With my hands up (again) I did this to a 400/4 in the mid-80's and due to the amount of engines in breakers- resolved it with a new bottom-end complete. Id actually though Id put a wrong bolt- ie not from the original engine, rather than a mistake- but No, id clearly put the long bolt in the lower LHS and on strating the engine after a rebuild- suddenly there was a huge leak and a noise- then the engine cut..I did mention it once long ago on this Forum- as Ive had my present 400/4 for over 10 years now. Time flys...

12
CB350/400 / Re: Engine Strip - I'm nervous
« on: January 03, 2020, 05:57:25 PM »
Trigger and Julie know their stuff as they have done all this before.
Just to pick up on one of your points which I think i can answer-

(4c) The oil pick up filter has metal pieces in it. It was also covered in thick gunge almost like gearbox oil.

When I rebuilt mine 9 years ago . I bought it as a sorry-state non-runner. Id not had one since the early 90's.
I popped off the sump and found the same as you-it was aluminium gunk and bits all over the strainer, so I cleared it off and promptly put it all back together without to much consideration as to where it has come from. I was hoping it was general wear and or sloppy oil-changes.

I was chatting on here to Julie about cam-chain adjustment as I went to 'adjust' mine and undoing the adjuster made little difference-even though its a stainless steel bolt and nut. The penny dropped-my lower cam-chain horse-shoe has seized.
 Now, Julie told me Id have to strip the motor to replace it-which is correct-but I read about this somewhere and although its not a permanent fix (Julie said its a bodge..) You can insert a long thin drift down the throat of the chamber-accessed via the large cap thats above the adjuster- and 'tap' the drift. This, in my case moved the lower horse-shoe and shut the cam-chain up. The metal on the strainer was non-metallic and caused by the chain rubbing/eroding the throat of the chamber.
Im actually and engineer!-but I saw little benefit at the time stripping the whole motor-I retire in a few years, have too many other bikes to maintain and cars...Ill save all that for then-its not as if the 400/4 gets much use-used in thrice in 2019- and I know what the cam-chain sounds like when its loose!
I also plan to do the head/valves but if Im going to remove the motor and start dismantling it-Ill do it once!
Ive rebuilt these motors before back in the early 80's and I know how easy bolts strip or heads snap off- my bikes running perfectly well and Im not into causing myself a load of grief, neither have I the spare cash to instantly resolve it! Back in the 80's you can pick up a running 400 motor for £50- no problem- the breakers were full of them in London area.


13
CB350/400 / Re: batterie 400f
« on: December 29, 2019, 08:34:37 PM »
I fitted a Motorbatt AGM and it didn't last long, 2 Years?-despite the Honda being kept on an optimate all year around when not rolling. I gave it no further thought and just replaced with a SLA as they are cheap as chips. Ive not ordered one for a while but i hear or read that they (sellers) are not allowed to ship acid like they used to (in bottles)

14
CB350/400 / Re: Retapping spark plug hole
« on: December 28, 2019, 07:27:57 PM »
Any thread repair without removing the head has to be taken as a one stop attempt to reclaim the ally, but it is possible as previously said by others.

I cross-threaded my one of the heads on my CX500 many years ago and the plug literally fired-out when the bike started.
I took a plug and hacksawed a slot down the threaded shank, cleaned all the swarf off and used it to act as a taper-thread, with plenty of grease.

Yes, it worked and I did thousands more miles with that re-cut thread, but I always had to 'oil' the new plug on that head when i replaced plugs at service time.
The thread was 'tight' and I didn't have the funds back then to do the job correctly or worse-pay someone else to (us engineers are generally resourceful but certainly not wealthy)

15
CB350/400 / Re: Renewing brake hydraulic oil
« on: December 27, 2019, 03:31:57 PM »
I was most amused by the use of “matchbox”. Are they still a thing?


Sent from my iPhone using Tapatalk
Steve- Might not have any matchboxes left but i was glad Im still a smoken when a fuse I broke down a while back due to a cracked fuse. Out fwith the fag-paper and home I rode! (as for lighting them, the wife upgraded me to a Zippo about 25 years ago!)

Pages: [1] 2 3 ... 14
SimplePortal 2.3.5 © 2008-2012, SimplePortal