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nc30 rebuild [message #229799] Sun, 21 November 2010 18:27 Go to next message
born2ride is currently offline  born2ride   United Kingdom
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Got given this low milage nc30 about a month ago. shes been stood in a garage for ova 13 years after the previous rider had a spill on the right hand side. the guy who bought it off him with the plans of gettin her back on the road moved over seas shortly after and left it in his Mums garage. needless to say she didnt want it there anymore. shes done just under 10000km and was only used in the uk ot under a year. wot can i say but result!

Did have this under a different section cause i was just hoping to renew the fairing, pegs etc, clean carbs, replace fluids and get her runing. no suprises that this was not the case so shes turned into a rebuild.

the fuel tank was empty, so as i was expecting the piston rings are shot so theres no compression, also checked the spark which there is none! problem on the low tension side so that'll be another job 2 check when ive finshed the engine rebuild. oh well, going 2 be a few things 2 do before shes on the road

Got a second hand set of carbs off the bay cause the rubber in the needle valves were fubard as were the diaphagms. made no sense trying to refurb the ones I had. any way heres a few pics of the project so far

the day i got her
index.php/fa/17219/0/

2 hours after i got her back
index.php/fa/17220/0/
Re: nc30 rebuild [message #229800 is a reply to message #229799] Sun, 21 November 2010 18:37 Go to previous messageGo to next message
born2ride is currently offline  born2ride   United Kingdom
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half an hour spend scrubbing the chain, not bad considering it was completely covered in rust

index.php/fa/17221/0/

And another 4 hours to strip everything off to get her to this state. was quite supprised how light and easy the engine is to get out the frame.

index.php/fa/17222/0/
Re: nc30 rebuild [message #229802 is a reply to message #229800] Sun, 21 November 2010 18:52 Go to previous messageGo to next message
born2ride is currently offline  born2ride   United Kingdom
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index.php/fa/17223/0/index.php/fa/17224/0/
Re: nc30 rebuild [message #229803 is a reply to message #229802] Sun, 21 November 2010 18:59 Go to previous messageGo to next message
born2ride is currently offline  born2ride   United Kingdom
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and about an hour to strip most of the engine out

index.php/fa/17225/0/

index.php/fa/17226/0/
Re: nc30 rebuild [message #229804 is a reply to message #229799] Sun, 21 November 2010 19:10 Go to previous messageGo to next message
born2ride is currently offline  born2ride   United Kingdom
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So the plan for my next free day is to replace the piston rings, hone the bores out and re lap the valves in, sounds like fun huh?! Got loads of parts to polish up, shame there's no electric in the garage cause id spend the evenings on her too. smile Not going too bad so far reckon another 10 hours and she'll be all back together again (excluding cleaning and polishing of course Laugh )
Re: nc30 rebuild [message #229807 is a reply to message #229804] Sun, 21 November 2010 20:13 Go to previous messageGo to next message
SPAL is currently offline  SPAL   United Kingdom
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Cool,

coming along

SPal
Re: nc30 rebuild [message #229824 is a reply to message #229807] Sun, 21 November 2010 22:42 Go to previous messageGo to next message
Kermit is currently offline  Kermit   United Kingdom
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(22) Giacomo Agostini
Your not hanging about are you, looks great, keep the pics coming Thumbs Up
Re: nc30 rebuild [message #229825 is a reply to message #229804] Sun, 21 November 2010 22:47 Go to previous messageGo to next message
SPAL is currently offline  SPAL   United Kingdom
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born2ride wrote on Sun, 21 November 2010 19:10
So the plan for my next free day is to replace the piston rings, hone the bores out and re lap the valves in, sounds like fun huh?! Got loads of parts to polish up, shame there's no electric in the garage cause id spend the evenings on her too. smile Not going too bad so far reckon another 10 hours and she'll be all back together again (excluding cleaning and polishing of course Laugh )


I was gonna say, he don't **** about, does he !!!! unlike some people (mentioning no names) Laugh

SPal
Re: nc30 rebuild [message #230081 is a reply to message #229799] Wed, 24 November 2010 20:48 Go to previous messageGo to next message
born2ride is currently offline  born2ride   United Kingdom
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Had a spare couple of hours in daylight so managed to strip the engine to pieces, and give her a good clean up. cylinder bores were not too bad, some surface corrosion where the pistons were sitting but they honed out ok - result. inlet valves didn't take too much lapping in, but the exhaust valve seats took quite a bit to clean up. would have been easier if the lapping tool was small enough to be able to use with those tiny valves....! Amazed how clean the pistons came up with just some good old wd40 and some rag. all in all a nice little job, now just gotta play the waiting game till i get the new parts.
index.php/fa/17249/0/index.php/fa/17250/0/
Re: nc30 rebuild [message #230083 is a reply to message #230081] Wed, 24 November 2010 21:34 Go to previous messageGo to next message
SPAL is currently offline  SPAL   United Kingdom
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hi born2ride

what are those two springs that are in the pic of the engine (through the sump) ?

SPal

ah, just seen pic when lump was together and they are there as well, maybe they are nothing to do with it!
Re: nc30 rebuild [message #230088 is a reply to message #230083] Wed, 24 November 2010 22:50 Go to previous messageGo to next message
born2ride is currently offline  born2ride   United Kingdom
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SPAL wrote on Wed, 24 November 2010 21:34
hi born2ride

what are those two springs that are in the pic of the engine (through the sump) ?

SPal

ah, just seen pic when lump was together and they are there as well, maybe they are nothing to do with it!


They are the front fork springs dude. The only thing i havn't totally striped is the swing arm off the frame!! carried away i know Grin
Re: nc30 rebuild [message #230089 is a reply to message #229799] Wed, 24 November 2010 22:57 Go to previous messageGo to next message
born2ride is currently offline  born2ride   United Kingdom
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was lucky i did strip the engine down the bolt that holds the oil pump sprocket on was only finger tight. That was a disaster waiting 2 happen Confused
Re: nc30 rebuild [message #230093 is a reply to message #230089] Wed, 24 November 2010 23:23 Go to previous messageGo to next message
SPAL is currently offline  SPAL   United Kingdom
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HEll yeah.

That was lucky. Thumbs Up

weird though cause you wouldnt think anyone would touch them unless doing a complete strip down.

Have u got any pics of the g/box ie how selector drum & dogs sit ?

Its a very compact engine

Can't wait 2 see more !

SPal

Re: nc30 rebuild [message #230096 is a reply to message #230093] Thu, 25 November 2010 00:10 Go to previous messageGo to next message
Kermit is currently offline  Kermit   United Kingdom
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(22) Giacomo Agostini
Interesting thread just got more interesting.....an engine in pieces and a v4 one at that Thumbs Up Grin
Re: nc30 rebuild [message #230099 is a reply to message #230096] Thu, 25 November 2010 11:02 Go to previous messageGo to next message
SP2 Riley is currently offline  SP2 Riley   United Kingdom
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(19) John Surtees
good work so far bud and a good project bike Thumbs Up

think a cir-clip held pressure plate on a clutch must be quite rare

as ive not seen that before smile
Re: nc30 rebuild [message #230199 is a reply to message #229799] Fri, 26 November 2010 19:03 Go to previous messageGo to next message
born2ride is currently offline  born2ride   United Kingdom
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damn you've got good eyes spoting that circlip! Will hopefully put in more photos of everything on the rebuild, kinda get carried away when im striping stuff down, nearly forgot 2 take any photos...

Managed to tart up the rear subframe so now theres no rust to worry about, was only surface rust but didnt want it to get worse. also theres now no road rash on the engine casing, bit of wet and dry followed by high temp paint, again no photos doh!

Also took the datatool "antique" alarm off as it wasnt working, well the siren worked but it wouldnt shut up!!!!!! cant say it was installed very well twisted wires and electrical tape?? only bodge ive found so far tho. wiring looms as good as new all soldered up and protected with heat shrink, all connectors look brand new.

if i can be bothered will clean some more parts up on sunday if its not too freezing smile
Re: nc30 rebuild [message #230200 is a reply to message #229802] Fri, 26 November 2010 19:11 Go to previous messageGo to next message
Kermit is currently offline  Kermit   United Kingdom
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This pic reminded me of something I never fully answered when I did my heads 4+ years ago.

index.php/fa/17224/0/

Quazi wrote on Sat, 08 July 2006 21:33
Good one fella, just one question?

What's the orange cack on the top of the valve spring and collar?

I didn't know other than assuring Quazi it wasn't rust. Have you any idea what is it cos its now bugging me? Laugh

Re: nc30 rebuild [message #230210 is a reply to message #230200] Fri, 26 November 2010 19:37 Go to previous messageGo to next message
born2ride is currently offline  born2ride   United Kingdom
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Kermit wrote on Fri, 26 November 2010 19:11
This pic reminded me of something I never fully answered when I did my heads 4+ years ago.

index.php/fa/17224/0/

Quazi wrote on Sat, 08 July 2006 21:33
Good one fella, just one question?

What's the orange cack on the top of the valve spring and collar?

I didn't know other than assuring Quazi it wasn't rust. Have you any idea what is it cos its now bugging me? Laugh


The valves use 2 springs that are both progressive. the paint helps u know which way 2 put them back in. always handy Grin not sure if theres another reason for it, but i doubt it
Re: nc30 rebuild [message #230213 is a reply to message #230210] Fri, 26 November 2010 19:40 Go to previous messageGo to next message
Kermit is currently offline  Kermit   United Kingdom
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(22) Giacomo Agostini
ah, just paint marks, thats good enough for me Thumbs Up
Re: nc30 rebuild [message #231534 is a reply to message #229799] Thu, 09 December 2010 18:50 Go to previous messageGo to previous message
born2ride is currently offline  born2ride   United Kingdom
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projects still at a stand still waiting for the new rings and gaskets. wanna be out there rebuilding... guess ill just have 2 find some parts 2 polish to keep me entertained??!
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