First ever rebuild!

twistednuts
Site Supporter
Site Supporter
Reactions:
Posts: 937
Joined: 07 Feb 2010, 00:37
Location: Lancashire
Re: First ever rebuild!

Post by twistednuts » 07 Feb 2014, 10:32

I dont think your gonna be getting all the seals an that what helisupp listed for £300, but you dont have to change them.
You dont have to change the balance shaft either.
Its a case of if your planning on keeping the bike a while, its worth replacing certain things.

If you just want to get it running then replace minimum. Balance shaft might last for yonks yet

User avatar
helisupp
NWAA Supporter
NWAA Supporter
Reactions:
Posts: 744
Joined: 12 Apr 2012, 21:57
Bike Owned: CRM AR (4)
Location: Gloucester
Re: First ever rebuild!

Post by helisupp » 07 Feb 2014, 17:14

Is this a rebuild, or a quick repair..............if its a quick repair then title of thread is misleading.

If its a rebuild.....£500 is more like a figure for a rebuild.

kingoftheswing
NWAA Supporter
NWAA Supporter
Reactions:
Posts: 91
Joined: 22 Sep 2013, 22:11
Re: First ever rebuild!

Post by kingoftheswing » 07 Feb 2014, 17:19

I took the bike apart when it stopped running and a mechanic informed me that the main bearing's were gone and should be replaced. This is what has led me to this position. I'm just trying to get my baby running again, but in doing so stop it from breaking again any time within the next couple of years. I just figured that splitting the cases and re-assembly would count as a rebuild, is this is not the case then apologies for misleading. I am a novice and doing my best to learn.

I phoned Leisure Trail today, the quoted me £350 ish for:-

-Main bearing's and seals
-Gear box bearings and seals
-Full gasket set
-Kick start bolt
-Sprockets and chains

Can anyone tell me how to correctly check a bearing as I honestly have no idea. I have just turned them in situ and listened/felt for any grinding. Is my method correct?

I have another question, O-ring chain, yes or no? Are they worth the extra money spent on them?

User avatar
helisupp
NWAA Supporter
NWAA Supporter
Reactions:
Posts: 744
Joined: 12 Apr 2012, 21:57
Bike Owned: CRM AR (4)
Location: Gloucester
Re: First ever rebuild!

Post by helisupp » 07 Feb 2014, 17:38

£350 is is getting on for £500......LT quote prices excluding VAT, hopefully yours included VAT.

O ring is the way to go, or you will spend most of your time adjusting a drooping chain.

fallenmikethebike
NWAA Supporter
NWAA Supporter
Reactions:
Posts: 3520
Joined: 02 Dec 2007, 16:02
Bike Owned: MK3
Location: Mid Surrey
Re: First ever rebuild!

Post by fallenmikethebike » 07 Feb 2014, 19:50

Feel for any roughness or wobbling when spinning the bearing. The balance shaft bearings are notoriously fragile, though rarely actually fail, they just get noisier.
Most bearings other than the mains, and afore mentioned should not have undue wear.
L.T. should be able to give good, though not copper bottomed guaranteed advice.
Fixer upper, replace as little as possible, be the caveat is SOMETHING can still fail.
Keeper? I would be looking at longevity, and replacing all internal casing bearings.
Mike
VFORCE REEDS-MUGEN HEAD AND BARREL-WHITE POWER-ALL ON MY WISH LIST!!

kingoftheswing
NWAA Supporter
NWAA Supporter
Reactions:
Posts: 91
Joined: 22 Sep 2013, 22:11
Re: First ever rebuild!

Post by kingoftheswing » 11 Feb 2014, 19:55

Anyone got any experience with Athena for gasket sets?

They have a full set available for just 41 euros!

fallenmikethebike
NWAA Supporter
NWAA Supporter
Reactions:
Posts: 3520
Joined: 02 Dec 2007, 16:02
Bike Owned: MK3
Location: Mid Surrey
Re: First ever rebuild!

Post by fallenmikethebike » 11 Feb 2014, 22:25

I've not heard any bad feedback on them, " Fishy" swears by them, and might actually be their best customer :lol: :lol: .
Mike
VFORCE REEDS-MUGEN HEAD AND BARREL-WHITE POWER-ALL ON MY WISH LIST!!

User avatar
fishtail
Site Supporter
Site Supporter
Reactions:
Posts: 1048
Joined: 13 Jan 2012, 11:29
Bike Owned: CRM 250 Mk3
Location: derby/leicester border.
Re: First ever rebuild!

Post by fishtail » 12 Feb 2014, 12:42

athena was fine - no probs* - I even got a spare gasket ( think its base gasket - ) its for a different model tho

how much tho?

* - actually they did take a while to ship tho - remember had to prod em - cos heard nothing apart form suckin of the funds...


search my recent posts - I saw complete gasket set for about 45 quid on taobao...
1996 CRM 250 "Mk 3" FMF pipe .... - the other 'un is a 98 hornet 600 - Sai Kung Hong Kong

User avatar
helisupp
NWAA Supporter
NWAA Supporter
Reactions:
Posts: 744
Joined: 12 Apr 2012, 21:57
Bike Owned: CRM AR (4)
Location: Gloucester
Re: First ever rebuild!

Post by helisupp » 12 Feb 2014, 14:38

Fishy, is the Athena gaskets set you used caused your engine oil leak........ :D

User avatar
helisupp
NWAA Supporter
NWAA Supporter
Reactions:
Posts: 744
Joined: 12 Apr 2012, 21:57
Bike Owned: CRM AR (4)
Location: Gloucester
Re: First ever rebuild!

Post by helisupp » 12 Feb 2014, 14:40

On another note, did you ask LT what is included in the gasket set, they told me they do not sell sets, they just put them in a packet.

Make sure you get the exhaust gasket.

User avatar
fishtail
Site Supporter
Site Supporter
Reactions:
Posts: 1048
Joined: 13 Jan 2012, 11:29
Bike Owned: CRM 250 Mk3
Location: derby/leicester border.
Re: First ever rebuild!

Post by fishtail » 12 Feb 2014, 14:59

helisupp wrote:Fishy, is the Athena gaskets set you used caused your engine oil leak........ :D
hahah - actually that was the honda gasket..

think its my dab hand wit the oil can... breather tube into air box :oops:

yeh the athena gasket kit has the lot! even some little copper ones,,,, think they were oil inspection hole.. sump an rad..
1996 CRM 250 "Mk 3" FMF pipe .... - the other 'un is a 98 hornet 600 - Sai Kung Hong Kong

kingoftheswing
NWAA Supporter
NWAA Supporter
Reactions:
Posts: 91
Joined: 22 Sep 2013, 22:11
Re: First ever rebuild!

Post by kingoftheswing » 15 Feb 2014, 18:02

Hi again guy's,today I went to Leisure Trail and I have to say, I was very pleased with the service that I received.

One of the guy's there, labelled their CRM expert, checked all of my bearings for me and spent time talking me through me next steps.

I purchased:

-Front and rear sprockets, and new O-ring chain.
-Crank case gasket.
-Head gaskets, upper and lower.
-Exhaust gasket.
-Set of Carb seal's.
-Main bearings and seals.
-Gear selector drum bearing.
-Kick start bolt.
-Front sprocket bolt.
-Piston circlips.
-Tub of grease.
-Brake fluid.
-Motor oil.

They even threw in a workshop manual for the CRM.

I got everything for £281 and the odd pence.

I'm sure there were a couple of other items that I can't remember, overall though I was really happy with the price I paid and service received.

Now I have the task of removing the main bearing's. I have tried heating the case up and then applying the socket and "hammer the fuck out of it" method, but a dare not hit it any harder.

Any advice guy's? My balls are starting to tingle now I have all of my part's! I want it back together!

User avatar
helisupp
NWAA Supporter
NWAA Supporter
Reactions:
Posts: 744
Joined: 12 Apr 2012, 21:57
Bike Owned: CRM AR (4)
Location: Gloucester
Re: First ever rebuild!

Post by helisupp » 15 Feb 2014, 20:17

So did you buy a clutch casing gasket......and are you going to do all this work and put the original piston rings back in.

Surely it deserves a set of rings poor thing.

kingoftheswing
NWAA Supporter
NWAA Supporter
Reactions:
Posts: 91
Joined: 22 Sep 2013, 22:11
Re: First ever rebuild!

Post by kingoftheswing » 16 Feb 2014, 10:20

I already had a clutch casing gasket and yes, I am going to attempt all of the work myself.

There is nothing wrong with the piston rings, I am going to replace the whole piston when I have the money. At least that doesn't require splitting the crank cases again.

I may take so long reassembling the bottom end that I have the money for the new piston before it all goes back together. I am really taking my time as I get heavy handed when I get frustrated.

Just having trouble removing the main bearings at the moment.

fallenmikethebike
NWAA Supporter
NWAA Supporter
Reactions:
Posts: 3520
Joined: 02 Dec 2007, 16:02
Bike Owned: MK3
Location: Mid Surrey
Re: First ever rebuild!

Post by fallenmikethebike » 16 Feb 2014, 14:23

Is there not a little engineering shop near you? £10 for a borrow of the fly press might well save a huge amount of frustration.
Mike
VFORCE REEDS-MUGEN HEAD AND BARREL-WHITE POWER-ALL ON MY WISH LIST!!


Post Reply