Author Topic: Meet my new 550f2  (Read 18723 times)

Offline mickwinf

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Re: Meet my new 550f2
« Reply #105 on: October 23, 2019, 11:14:42 PM »
Tonight i had a couple of hours so stripped the top end, all came apart fairly easily apart from the revcounter gearbox housing which snapped off! Definitely been stripped before and no horrors, the rings are all free and not broken and bores look ok but will need checking and honing plus new rings. Will also strip valves and fit stem seals.
Love the 500 and 550 have a 500 called Lazarus under restoration

Offline mickwinf

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Re: Meet my new 550f2
« Reply #106 on: November 23, 2019, 01:23:20 PM »
not much happening at the moment as been doing lots of DIY indoors, and to be honest not much spare cash at the moment. However today i had a closer look at the bores, and can see where the rings have left a ring around the bore when it was stood for many years and probably rusted. I can actually feel it with my fingernail at the worst spot. Obviously the best thing would be a rebore and new pistons but no money available for that, and not sure if a hone would remove the mark. Advise please you gurus out there. I have posted pics but not sure they show it clearly
Love the 500 and 550 have a 500 called Lazarus under restoration

Offline Trigger

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Re: Meet my new 550f2
« Reply #107 on: November 23, 2019, 01:47:50 PM »
There are two ways to go about it 1) buy a new set of rings and hone out but, it may not clean up or be within spec or 2) buy a piston kit at 0.50 over size and do the job right  ;)

Water damage is always a gamble as you never know if it will clean up at 0.50, 0.75, 1mm or not at all.

Offline mickwinf

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Re: Meet my new 550f2
« Reply #108 on: December 02, 2019, 03:32:11 PM »
ok so i have had a go with a glaze buster tool and it has cleaned up the bore, but the mark is still there, so a re-bore is needed. I have seen piston sets advertised on ebay from crusinimage_uk at £99 per set. Anyone have experience with them? And also somewhere to get the rebore done to the correct standard.
Love the 500 and 550 have a 500 called Lazarus under restoration

Offline Nurse Julie

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Re: Meet my new 550f2
« Reply #109 on: December 02, 2019, 03:43:34 PM »
Trig always uses Cruzinimage piston / ring sets on all our customers engines that don't insist on OEM and also on our own engines. IMD (UK based) are doing .50 oversize pistons kits for £115.60. Look on eBay. But whatever you buy, you need to make sure the bores will clean up at .50 as you may need . 75 or even 1.0 rebore to remove the marks fully.
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Offline mickwinf

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Re: Meet my new 550f2
« Reply #110 on: December 02, 2019, 06:51:10 PM »
thanks julie i saw the ad for IMD and wondered if a uk supplier would be best, not much difference in price. Any recommended place to do rebores in lincs?
Love the 500 and 550 have a 500 called Lazarus under restoration

Offline Nurse Julie

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Re: Meet my new 550f2
« Reply #111 on: December 02, 2019, 07:04:01 PM »
thanks julie i saw the ad for IMD and wondered if a uk supplier would be best, not much difference in price. Any recommended place to do rebores in lincs?
No Mick, I don't know anyone.... Other than the chap sitting opposite me at the dining room table, that being Trig 🙄🙄🙄 Send him a PM and he will sort it for you.
LINK TO MY EBAY PAGE. As many of you know already, I give 10% discount and do post at cost to forum members if you PM me direct.
https://www.ebay.co.uk/sch/julies9731/m.html?item=165142672569&rt=nc&_trksid=p2047675.m3561.l2562

LINK TO MY CB400/4 ENGINE STRIP / ASSESSMENT AND REBUILD...NOW COMPLETE
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Offline hairygit

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Re: Meet my new 550f2
« Reply #112 on: December 02, 2019, 07:04:13 PM »
thanks julie i saw the ad for IMD and wondered if a uk supplier would be best, not much difference in price. Any recommended place to do rebores in lincs?
Of course she has, Trigger does it!

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Offline mickwinf

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Re: Meet my new 550f2
« Reply #113 on: December 03, 2019, 09:05:02 AM »
Thanks Julie, i was not sure if Graham did his own rebores or farmed them out. Once i can afford it i will be in touch.
Love the 500 and 550 have a 500 called Lazarus under restoration

Offline mickwinf

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Re: Meet my new 550f2
« Reply #114 on: January 14, 2020, 12:33:57 PM »
So i ordered a set of pistons from a UK based company IMD pistons, arrived quickly and seem to be decent quality. Took them and the barrels to Trigger and Julies for a rebore, and had a look at the £1000 sohc project, looking good! Yesterday i thought i would check out the head and regrind the valves, but unfortunately noticed that one of the valve guides was loose in the head, and the other exhaust valves seem to have a lot of play. Inlets seem to have no play so hoping they are ok. Not sure if i can do this job myself so might have to ask Graham to help!
Love the 500 and 550 have a 500 called Lazarus under restoration

Offline paul G

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Re: Meet my new 550f2
« Reply #115 on: January 14, 2020, 12:48:19 PM »
So i ordered a set of pistons from a UK based company IMD pistons, arrived quickly and seem to be decent quality. Took them and the barrels to Trigger and Julies for a rebore, and had a look at the £1000 sohc project, looking good! Yesterday i thought i would check out the head and regrind the valves, but unfortunately noticed that one of the valve guides was loose in the head, and the other exhaust valves seem to have a lot of play. Inlets seem to have no play so hoping they are ok. Not sure if i can do this job myself so might have to ask Graham to help!
Just send it to him Mick it's not worth the hassle and you won't regret it.
Do it right and do it once  ;)
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Offline mickwinf

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Re: Meet my new 550f2
« Reply #116 on: February 20, 2020, 04:20:32 PM »
Progress a bit slow at the moment but have had the rebore done by Trigger and just started the rebuild of the top end. One job i am finding tricky is putting the circlips on the pistons, they are the stupid wire type, does anyone have any tips?
Love the 500 and 550 have a 500 called Lazarus under restoration

Offline paul G

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Re: Meet my new 550f2
« Reply #117 on: February 20, 2020, 04:50:52 PM »
Progress a bit slow at the moment but have had the rebore done by Trigger and just started the rebuild of the top end. One job i am finding tricky is putting the circlips on the pistons, they are the stupid wire type, does anyone have any tips?

One tip make sure you have the cases blocked up where the rods come out as those dam things fly anywhere.
And if you do loose one don't bother looking for it  ;)
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Offline paul G

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Re: Meet my new 550f2
« Reply #118 on: February 20, 2020, 04:54:36 PM »
I use a pair of pliers with thin stubby blades on them. the springs bend quite a lot.
Grip one about 5mm in from the end, put the other end in the groove and push in.
Make sure the ends are not in the openings.
Works well for me.
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Offline Nurse Julie

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Re: Meet my new 550f2
« Reply #119 on: February 20, 2020, 05:06:23 PM »
I couldn't get the knack either Mick. I think I managed one, maybe 2 on my 400/4 pistons and I then got Trig to do the rest. ( Well, he took over without me asking actually, as he was exasperated with my inaptitude, or incompetence as he called it) Trig makes it look so bloody easy...... 🙄🙄🙄🙄🙄
« Last Edit: February 20, 2020, 05:09:09 PM by Nurse Julie »
LINK TO MY EBAY PAGE. As many of you know already, I give 10% discount and do post at cost to forum members if you PM me direct.
https://www.ebay.co.uk/sch/julies9731/m.html?item=165142672569&rt=nc&_trksid=p2047675.m3561.l2562

LINK TO MY CB400/4 ENGINE STRIP / ASSESSMENT AND REBUILD...NOW COMPLETE
http://www.sohc.co.uk/index.php/topic,14049.msg112691/topicseen.html#new

 

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