Author Topic: Hello from Shropshire UK  (Read 2743 times)

Offline 400 Cafe Racer

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Re: Hello from Shropshire UK
« Reply #30 on: March 30, 2021, 06:53:10 PM »
Best vacuum gauges in my opinion, and most like original Honda, are Sealey and cost about £135 on ebay plus come with all adaptors. There are similar looking ones costing about £50 but the actual gauges are cheap and will not be as accurate.

Hi Bryan, thanks for your input on that, ;D I will have a look and add it to the list Also one other item I was loooking  for was a correctly sized Magnetic SUMP Drain Plug, if anyone can help please.

Cheers

Dennis ;D
Retired Automotive Engineer   MIMI, MITRE, DMS, MCMI.

Latest    - 1979 CB400/4  Cafe Racer - Parakeet Yellow
              - 1939 Velocette GTP 250 twin port Two stroke

1988-91 - Lamborghini Countach QV replica design and
                 build - 3000hr spare time project

In 1956 at 12yrs old and dirt tracking
              - 1937 Rudge 500 4 valve
              - 1940s Royal Enfield 225sv
              -  Ex WD Norton 500sv

Offline 400 Cafe Racer

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Re: Hello from Shropshire UK
« Reply #31 on: March 30, 2021, 07:45:40 PM »
Yet another please. ;)

FUEL PIPE CLIPS (spring fit)

Thanks Guys

Retired Automotive Engineer   MIMI, MITRE, DMS, MCMI.

Latest    - 1979 CB400/4  Cafe Racer - Parakeet Yellow
              - 1939 Velocette GTP 250 twin port Two stroke

1988-91 - Lamborghini Countach QV replica design and
                 build - 3000hr spare time project

In 1956 at 12yrs old and dirt tracking
              - 1937 Rudge 500 4 valve
              - 1940s Royal Enfield 225sv
              -  Ex WD Norton 500sv

Offline 400 Cafe Racer

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Re: Hello from Shropshire UK
« Reply #32 on: March 30, 2021, 08:38:32 PM »
Can anyone tell me the normal running oil pressure range please
Retired Automotive Engineer   MIMI, MITRE, DMS, MCMI.

Latest    - 1979 CB400/4  Cafe Racer - Parakeet Yellow
              - 1939 Velocette GTP 250 twin port Two stroke

1988-91 - Lamborghini Countach QV replica design and
                 build - 3000hr spare time project

In 1956 at 12yrs old and dirt tracking
              - 1937 Rudge 500 4 valve
              - 1940s Royal Enfield 225sv
              -  Ex WD Norton 500sv

Offline K2-K6

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Re: Hello from Shropshire UK
« Reply #33 on: March 30, 2021, 08:51:27 PM »
Warning light extinguishes at approximately 15 psi and maximum pressure is capped at around 60 psi, estimated slightly as I think they may quote 59.something in manuals.

It'll dump excess out the relief valve to avoid risk to oil pump drive, as most engine arrangements do.

Flow is,  pickup, pump, floods filter housing, exits through filter element centre via main bolt to internal galleries.  Pressure relief also built in to filter bolt in case of filter blocking, so feed is maintained with unfiltered.

Barrel feed route to head has resistance in line to maintain crankshaft plain bearings in high pressure environment,  with cam etc at low pressure open bath type oiling and spray bars for wetting effectively. 

Offline 400 Cafe Racer

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Re: Hello from Shropshire UK
« Reply #34 on: March 30, 2021, 09:24:52 PM »
Warning light extinguishes at approximately 15 psi and maximum pressure is capped at around 60 psi, estimated slightly as I think they may quote 59.something in manuals.

It'll dump excess out the relief valve to avoid risk to oil pump drive, as most engine arrangements do.

Flow is,  pickup, pump, floods filter housing, exits through filter element centre via main bolt to internal galleries.  Pressure relief also built in to filter bolt in case of filter blocking, so feed is maintained with unfiltered.

Barrel feed route to head has resistance in line to maintain crankshaft plain bearings in high pressure environment,  with cam etc at low pressure open bath type oiling and spray bars for wetting effectively.

Gee thanks K2-K6 thats great info  :) :)

I have been thinking about fitting an Oil pressure gauge and that gives me a good idea of the scale range to use. I'm thinking about picking up the feed from the pressure switch point but still retaining the switch, if I can find a suitable union/connection. I need to have a look what space is available tomorrow and the sizes of electrical senders.

Regards

Dennis
Retired Automotive Engineer   MIMI, MITRE, DMS, MCMI.

Latest    - 1979 CB400/4  Cafe Racer - Parakeet Yellow
              - 1939 Velocette GTP 250 twin port Two stroke

1988-91 - Lamborghini Countach QV replica design and
                 build - 3000hr spare time project

In 1956 at 12yrs old and dirt tracking
              - 1937 Rudge 500 4 valve
              - 1940s Royal Enfield 225sv
              -  Ex WD Norton 500sv

Offline philward

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Re: Hello from Shropshire UK
« Reply #35 on: March 30, 2021, 11:18:01 PM »
When I fitted the oil guage to my CR750 Rep, I used a 'tee' off the oil pressure switch pickup point - its a few years since I did it so can't remember gallery thread for the 'tee' but think I searched the US SOHC site. Then worked back from the guage for fittings/pipe
Current Bikes:-
Honda CB750K2 (1975)
Honda CB500K2 (12/1972)
Honda CR750 Replica (1972)
Honda CB350K0 (1969)
Kawasaki ZZR1100D3 (1995)
Kawasaki ZZR250 (1990) Project (Going on eBay ASAP)

Offline Bryanj

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Re: Hello from Shropshire UK
« Reply #36 on: March 30, 2021, 11:57:42 PM »
On a 400 there is not room to put anything extra where the pressure switch is(on oil pump under sprocket cover) so you need to drill and tap the screwed in plug under the points cover, just so happens i took one out of a 500 engine on Sunday you can have for post

Offline taysidedragon

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Re: Hello from Shropshire UK
« Reply #37 on: March 31, 2021, 01:01:48 AM »
Nice machines. 👍

Please tell me that you're going to improve the 400 rear brake pedal. I couldn't live with that Allen bolt sticking out! 😣

Hi taysidedragon, well spotted. ;) Yes its on the " to do" list, but at least its solid for now until i can source a nice replacement. Any suggestions from your experience please


I would try and get a longer knurled bar made to replace the pedal that's too short.

For carb balancing I use the Morgan Carbtune set. Well damped and accurate.
Thanks

Dennis
Gareth

1977 CB400F
1965 T100SS

Offline 400 Cafe Racer

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Re: Hello from Shropshire UK
« Reply #38 on: March 31, 2021, 08:24:11 AM »
On a 400 there is not room to put anything extra where the pressure switch is(on oil pump under sprocket cover) so you need to drill and tap the screwed in plug under the points cover, just so happens i took one out of a 500 engine on Sunday you can have for post

Hi Bryan, thank you for your info and help, thats very kind of you. I will PM you and make some arrangements.  :)
Cheers

Dennis
Retired Automotive Engineer   MIMI, MITRE, DMS, MCMI.

Latest    - 1979 CB400/4  Cafe Racer - Parakeet Yellow
              - 1939 Velocette GTP 250 twin port Two stroke

1988-91 - Lamborghini Countach QV replica design and
                 build - 3000hr spare time project

In 1956 at 12yrs old and dirt tracking
              - 1937 Rudge 500 4 valve
              - 1940s Royal Enfield 225sv
              -  Ex WD Norton 500sv

Offline 400 Cafe Racer

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Re: Hello from Shropshire UK
« Reply #39 on: March 31, 2021, 08:51:37 AM »
Nice machines. 👍

Please tell me that you're going to improve the 400 rear brake pedal. I couldn't live with that Allen bolt sticking out! 😣

Hi taysidedragon, well spotted. ;) Yes its on the " to do" list, but at least its solid for now until i can source a nice replacement. Any suggestions from your experience please


I would try and get a longer knurled bar made to replace the pedal that's too short.

For carb balancing I use the Morgan Carbtune set. Well damped and accurate.
Thanks

Dennis

Many thanks for the info Gareth.  :)

I will have a look at the Morgan set. The pedal if on my “to do” list for attention.

Cheers  ;D

Dennis
Retired Automotive Engineer   MIMI, MITRE, DMS, MCMI.

Latest    - 1979 CB400/4  Cafe Racer - Parakeet Yellow
              - 1939 Velocette GTP 250 twin port Two stroke

1988-91 - Lamborghini Countach QV replica design and
                 build - 3000hr spare time project

In 1956 at 12yrs old and dirt tracking
              - 1937 Rudge 500 4 valve
              - 1940s Royal Enfield 225sv
              -  Ex WD Norton 500sv

Offline 400 Cafe Racer

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Re: Hello from Shropshire UK
« Reply #40 on: March 31, 2021, 09:00:50 AM »
When I fitted the oil guage to my CR750 Rep, I used a 'tee' off the oil pressure switch pickup point - its a few years since I did it so can't remember gallery thread for the 'tee' but think I searched the US SOHC site. Then worked back from the guage for fittings/pipe

Many thanks Phil  :)

I plan to have a good look around the space and clearance situation today, both near the o/p switch and the points cover. Plus placement of the gauge, possibly opposite the A/F ratio gauge.

Cheers  ;D

Dennis
Retired Automotive Engineer   MIMI, MITRE, DMS, MCMI.

Latest    - 1979 CB400/4  Cafe Racer - Parakeet Yellow
              - 1939 Velocette GTP 250 twin port Two stroke

1988-91 - Lamborghini Countach QV replica design and
                 build - 3000hr spare time project

In 1956 at 12yrs old and dirt tracking
              - 1937 Rudge 500 4 valve
              - 1940s Royal Enfield 225sv
              -  Ex WD Norton 500sv

Offline 400 Cafe Racer

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Re: Hello from Shropshire UK
« Reply #41 on: March 31, 2021, 10:10:48 PM »
On the 400/4, can anyone confirm the oil pressure light switch and oil pump casing thread size please ? :)

Thanks

Dennis
Retired Automotive Engineer   MIMI, MITRE, DMS, MCMI.

Latest    - 1979 CB400/4  Cafe Racer - Parakeet Yellow
              - 1939 Velocette GTP 250 twin port Two stroke

1988-91 - Lamborghini Countach QV replica design and
                 build - 3000hr spare time project

In 1956 at 12yrs old and dirt tracking
              - 1937 Rudge 500 4 valve
              - 1940s Royal Enfield 225sv
              -  Ex WD Norton 500sv

 

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