CB550 Project Scruffy Racer

Sderbyshire

Into Sailing, classic Triumph cars and motorbikes.
Made a start on the brake disk drilling mini-project today

decided to disassemble the disks and have a local machine shop do the drilling

i dont have a decent drill press, cobalt drills or much patience !

so today i ground out the 6mm rivets securing the disks to their carriers

this will allow me to paint the carriers and ease the task of drilling

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Sderbyshire

Into Sailing, classic Triumph cars and motorbikes.
Stripped the rest of the front braking/suspension system today for painting

all went well and parts drying in the house overnight :-D

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Aiming to get the disks drilled next week then can reassemble, again !

Scruffy will be looking smart.....
 

Sderbyshire

Into Sailing, classic Triumph cars and motorbikes.
Disks prepped and templated ready for drilling tomorrow
i’m taking them to a freindly engineering shop in the morning as i dont have the equipment or patience for this sort of work !

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Sderbyshire

Into Sailing, classic Triumph cars and motorbikes.
Well that turned out well !

The disks took ages to drill, i thoughtnit would be an easy job with the proper tools but the engineers took a few hours to do a beautiful job.

couldnt resist reassembling as soon as i got them home :)

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Sderbyshire

Into Sailing, classic Triumph cars and motorbikes.
Scruffy is out of the workshop ready for testing, if the temperature gets up this afternoon !

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Sderbyshire

Into Sailing, classic Triumph cars and motorbikes.
Decided to have the rear wheel professionally balanced, and while it was out to fit bronze swingarm bushes i bought a while ago hit never fitted

there was no play in the old bushes but they were ‘reluctant’ to come out !

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new ones installed easily and a test ride indicates Scruffy is running nicely and is a lot of fun

the drilled disks also seems to have cured the squeeking that sometime occured previously :)

i may have run out of jobs ......
 

Sderbyshire

Into Sailing, classic Triumph cars and motorbikes.
As Scruffy is running almost perfectly now i thought i should test the ‘dodgy’ ngk spark plugs again

So i fired the bike up with the really old D7es plugs in place, all good

swapped back in the new D7ea plugs and it does not run well, not smooth idle and not revving cleanly

back in with the D7es plugs and instantly good again.

So either the D7ea plugs are not compatible with the cb550, they are the replacement for the NLA D7es, or mine are crap fakes.....

i have written to the supplier, wonder what they will say.

Searching online i found some D7es old stock plugs in Belgium, so i ordered those, will be interesting to see how they work.
 

Maritime

Over 10,000 Posts
Yep. I bought those for my crv off Amazon. They all failed within 1000 km or so that was the worst. I didn't know about fakes till that happened. Bought the replacements at Napa for $20 ea. They lasted until the car failed recall. Never again will I buy plugs from Ebay or Amazon.
 

Sderbyshire

Into Sailing, classic Triumph cars and motorbikes.
My order of some NOS D7ES plugs arrived so i installed those and Scruffy likes them!
also refitted the original Keihin Idle air screws, the ones without drillings, and a set of genuine Keihin 40 idle jets
vacuum sunced the carbs and Scruffy is running better than ever
99% perfect just a tiny tiny bit of hesitation at <5% throttle, then pulls strongly at any revs.

hopefully get some miles in soon as lockdown eases here in the UK and the temp gets anive 10c .....
 

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