Post by: Drew400 on July 18, 2017, 07:58:56 PM
I'm no expert on 750Ks, hence this question: does this look a good buy? - http://www.ebay.co.uk/itm/honda-cb750-k5-motorbike-/253040407868?hash=item3aea62353c:g:zNwAAOSw-29ZPm5-#shpCntId
I'm also inherently suspicious of ebay!
Comments and hints appreciated (e.g. can you private message a seller on e-bay?).
Cheers, D.
Post by: hairygit on July 18, 2017, 08:09:08 PM
Sent from my X6pro using Tapatalk
Post by: RGP750 on July 18, 2017, 09:00:43 PM
Wrong bolts in Handlebar clamp.
Picky i know but what else may there be ???
Post by: Trigger on July 18, 2017, 09:04:33 PM
Tut Tut !! no "d" spacers in the top yoke,
Wrong bolts in Handlebar clamp.
Picky i know but what else may there be ???
Sorry to pick you up on this but, the K5 never had D spacers ;)
I would want it to be in very good nick for that price and would need to see it up close and personal .
Post by: fryerk on July 18, 2017, 09:05:35 PM
Post by: RGP750 on July 18, 2017, 09:23:57 PM
Post by: Drew400 on July 18, 2017, 10:03:48 PM
Cheers, D.
Post by: JamesH on July 18, 2017, 10:13:34 PM
Post by: AshimotoK0 on July 18, 2017, 10:31:20 PM
Tut Tut !! no "d" spacers in the top yoke,
Wrong bolts in Handlebar clamp.
Picky i know but what else may there be ???
Sorry to pick you up on this but, the K5 never had D spacers ;)
I would want it to be in very good nick for that price and would need to see it up close and personal .
Hmm ! :D
[attachimg=2]
Post by: Trigger on July 19, 2017, 06:40:59 AM
It was superseded from 53230-341-700 to 53230-341-305 for the K5 and K6.
Post by: AshimotoK0 on July 19, 2017, 01:11:17 PM
Never believe a parts list, they had changed to 7mm bolts by then ;)
It was superseded from 53230-341-700 to 53230-341-305 for the K5 and K6.
I think you could forgive us for questioning it though ..seeing as it's listed in the Parts Book !
Perhaps you could share with us the most glaring errors you have from the Honda Manuals Graham.
Post by: Trigger on July 19, 2017, 01:18:57 PM
I have never read a parts manual, so I only know though experience if something is correct or not ;)
Post by: AshimotoK0 on July 19, 2017, 02:06:15 PM
Many member contact me questioning parts book/manuals, ask RGP about the incorrect crank case bolts ;DFair enough .. I start a thread in Anorak's corner :) Maybe some other members can contribute !
I have never read a parts manual, so I only know though experience if something is correct or not ;)
Post by: AshimotoK0 on July 19, 2017, 02:25:04 PM
Do not install top bridge without two special notched
D-shaped spacer-washers 53235-300-000 Honda 750 top bridge spacer washer 53235-300-000, one each,
at center in Honda triple tree top bridge washe reach center gap area,
or top bridge can crack when tightening around fork tubes.
Top fork bridge part number:
up to frame #1003433 (sandcast 1 to 3433), 53230-300-010,
superseded by 53230-300-315;
after frame #1003434 (sandcast 3434 to 7414), 53230-300-020,
superceded by 53230-300-673, later superseded by 53230-300-315.
After sandcasts, 53230-300-315 through end of K2.
(NOTE: it has been reported that in Europe and some other countries outside of the US,
the 'unicorn' style was used through the 1975 K model)
Insider Tip: measure the width of the 'tip of the unicorn horn'
if you are buying a used part-- that was one difference.
2. US K3-K6
Uses a small black meter bracket to connect gauges.
Do not install top bridge without two special notched
D-shaped spacer-washers 53235-300-000 Honda 750 top bridge spacer washer 53235-300-000, one each,
at center in Honda triple tree top bridge washereach center gap area,
or top bridge can crack when tightening around fork tubes.
Top fork bridge part number:
53230-341-305
Post by: paulbaker1954 on July 19, 2017, 03:21:53 PM
http://www.ebay.co.uk/itm/Honda-CB750-Four-K3-1973-Flake-Sunrise-Orange-Colorado-Import-2015/372015504960?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D2%26asc%3D20140122125356%26meid%3De168bbbe88f146038e0bd3b2f992548f%26pid%3D100005%26rk%3D2%26rkt%3D6%26mehot%3Dpp%26sd%3D253040407868 (http://www.ebay.co.uk/itm/Honda-CB750-Four-K3-1973-Flake-Sunrise-Orange-Colorado-Import-2015/372015504960?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D2%26asc%3D20140122125356%26meid%3De168bbbe88f146038e0bd3b2f992548f%26pid%3D100005%26rk%3D2%26rkt%3D6%26mehot%3Dpp%26sd%3D253040407868)
Post by: RGP750 on July 19, 2017, 07:59:28 PM
the stress is in the ally casting and doesn't change by bolt size surely????
Post by: Trigger on July 19, 2017, 08:15:51 PM
From an engineering point of view re "d " washers why would changing the bolt diameter stop the top yoke breaking??
the stress is in the ally casting and doesn't change by bolt size surely????
Oddjob has already been through this before but, I will go though it again. From unicorn to K4 on the 750 and 500 the bolt was 8mm into a 8.3mm hole, on these measurements a D spacer is required. In late 1974, Honda upgraded the top yokes with better alloy and used a 7mm bolt into a 7,3mm hole. Therefore more alloy it there to take the stress ;)
Post by: RGP750 on July 19, 2017, 08:42:27 PM
Post by: JamesH on July 19, 2017, 09:05:33 PM
Post by: Trigger on July 19, 2017, 09:21:11 PM
Maybe this is a UK bike thing? Every original US import K5/6 that I've had in does have the D spacer...?
Just dug out a original old microfiche on a USA K6 and can't see any D spacers listed but, clearly listed are the 7mmx54mm bolts ;)
Post by: JamesH on July 19, 2017, 09:28:12 PM
Post by: AshimotoK0 on July 19, 2017, 09:30:29 PM
Maybe this is a UK bike thing? Every original US import K5/6 that I've had in does have the D spacer...?
Just dug out a original old microfiche on a USA K6 and can't see any D spacers listed but, clearly listed are the 7mmx54mm bolts ;)
Yes they are not listed for K6 but everyone else telling me K5 had em . Ha ha don't have sleepless nights over it ;D K5 was never officially sold here so can't be a UK thing
Post by: JamesH on July 19, 2017, 09:31:17 PM
Post by: Trigger on July 19, 2017, 09:31:38 PM
Microfiche must be wrong Trigger. I never believe what's in the parts book / microfiche
just proves my original point that parts lists are wrong ;D
Post by: JamesH on July 19, 2017, 09:31:53 PM
Post by: Trigger on July 19, 2017, 09:35:32 PM
Me have a sleepless night, never heard of ;D ;D. It is all down to if the top yoke is the superseded part and bolt hole size ;)
Post by: Drew400 on July 25, 2017, 10:18:21 PM
Cheers, D.