Author Topic: Motor strip  (Read 5519 times)

Online tlmark

  • A's Best Friend
  • ***
  • Join Date: Aug 2016
  • Posts: 195
  • Karma: 2
  • Maidstone, Kent
Re: Motor strip
« Reply #30 on: 14.02. 2018 14:48 »
Oh yeah, the barrels have come back from SRM with new pistons and I had the barrels stove enamelled as they were powder coated... *eek* 
There have been lots of odd things done to this bike.

Online berger

  • Resident Legend
  • *****
  • Join Date: Nov 2017
  • Posts: 849
  • Karma: 5
  • keith from chesterfield 500ss cafe morris 8
Re: Motor strip
« Reply #31 on: 14.02. 2018 15:18 »
very nice and you've got one of the most proud barrel gasket faces ive ever seen .what make are the pistons?

Online tlmark

  • A's Best Friend
  • ***
  • Join Date: Aug 2016
  • Posts: 195
  • Karma: 2
  • Maidstone, Kent
Re: Motor strip
« Reply #32 on: 14.02. 2018 15:38 »
The Pistons are 8.75:1 GPM +40"  is that good I don't know *smile* that's just what they sent.

Online tlmark

  • A's Best Friend
  • ***
  • Join Date: Aug 2016
  • Posts: 195
  • Karma: 2
  • Maidstone, Kent
Re: Motor strip
« Reply #33 on: 20.02. 2018 10:57 »
Took the bottom end into work do the next stage of the rebuild.
thought I'd check the end float with as it came apart (less the missing shims ;)*roll*  blimey  *eek*     0.68mm or .027"

Online tlmark

  • A's Best Friend
  • ***
  • Join Date: Aug 2016
  • Posts: 195
  • Karma: 2
  • Maidstone, Kent
Re: Motor strip
« Reply #34 on: 20.02. 2018 14:37 »
That, of course, includes the damage to the web where the small boss has been worn away!

The Crank just bearly fits on to our little lathes at work, so running a dial gauge on it at the moment.

a couple of things now everything is washed and in good light (not the garage) the new SRM timing side bearing is longer than that installed at the moment?
and it looks like the camshaft bearing on the drive side is quite worn so I'm going to need to get that out.

Online tlmark

  • A's Best Friend
  • ***
  • Join Date: Aug 2016
  • Posts: 195
  • Karma: 2
  • Maidstone, Kent
Re: Motor strip
« Reply #35 on: 21.02. 2018 14:59 »
So the drive side camshaft bush was refusing to come out even with a blind bearing puller! Never seen one of these before what a great bit of kit. I borrowed it. ;)

The only thing we could think of was to cut the bush out by milling it away and then using the puller. and this worked a treat. And now looking at the old bearing most of the oil scroll has worn away! So I wouldn't mind betting that bush has never been changed. and most likely the cause of the wear to the cam in the first place
So now we move on to removing all the other bearing/bushes.  *smile*

think I'll use that nice puller again  ;)

Offline coater87

  • Wise & Enlightened
  • *
  • Join Date: Jul 2008
  • Posts: 1181
  • Karma: 6
Re: Motor strip
« Reply #36 on: 21.02. 2018 22:00 »
Those are really nice tools.

 First time I used one I gave myself a blood blister the size of Australia  *sad2*

Lee
Central Wisconsin in the U.S.

Online chaterlea25

  • Wise & Enlightened
  • *
  • Join Date: Jun 2009
  • Posts: 3108
  • Karma: 45
Re: Motor strip
« Reply #37 on: 21.02. 2018 23:08 »
Hi Mark,
Heating the cases up (evenly) will make removing the bushes easier,
It will also make fitting the new bushes a piece of cake, correct temp is a sizzling spit   *eek*
The cam bushes will need line reaming once fitted

I have a couple of different sizes of those pullers and they are the biz when you need them

John
1961 Super Rocket
1963 RGS (ongoing)

Online tlmark

  • A's Best Friend
  • ***
  • Join Date: Aug 2016
  • Posts: 195
  • Karma: 2
  • Maidstone, Kent
Re: Motor strip
« Reply #38 on: 22.02. 2018 15:17 »
Cheers guys  *smile*
all bushes are out not had much time on it today but I have deburred all the new bushes oil scroll ways as they were quite burred and probably wouldn't have passed much oil.  *conf*

Online tlmark

  • A's Best Friend
  • ***
  • Join Date: Aug 2016
  • Posts: 195
  • Karma: 2
  • Maidstone, Kent
Re: Motor strip
« Reply #39 on: 22.02. 2018 18:50 »
On another note does anyone know the clearance between the main bearing bush and crank? I did look but can't find it anywhere.   

Offline coater87

  • Wise & Enlightened
  • *
  • Join Date: Jul 2008
  • Posts: 1181
  • Karma: 6
Re: Motor strip
« Reply #40 on: 24.02. 2018 18:15 »
 after the bushing is installed and line bored, .0015 thousandths is a very good target.

 And the old adage applies with engines, a little too loose is much better than a little too tight.

 Lee
Central Wisconsin in the U.S.

Online tlmark

  • A's Best Friend
  • ***
  • Join Date: Aug 2016
  • Posts: 195
  • Karma: 2
  • Maidstone, Kent
Re: Motor strip
« Reply #41 on: 05.03. 2018 11:02 »
A little more progress made now the snow has gone.

A new shaft fitted to the idle gear, man that was tight to get in  *eek*

And I have managed to get the end caps off of the sludge trap. The drive side was tricky as the slot had been chewed before I started but a colleague suggested using a centre punch in the corners of the slot to get it moving! and this worked a treat a good tip if you're ever in the same situation.
On inspection, it was lovely clean inside  *wink2*  I have already bought a new trap and end plugs so those a ready to go in next.

Online chaterlea25

  • Wise & Enlightened
  • *
  • Join Date: Jun 2009
  • Posts: 3108
  • Karma: 45
Re: Motor strip
« Reply #42 on: 05.03. 2018 11:48 »
Hi Mark.
The tube needs o be removed as  the sludge gathers between it and the flywheel before it starts to fill the tube itself

John
1961 Super Rocket
1963 RGS (ongoing)

Online Greybeard

  • Jack of all trades; master of none.
  • Wise & Enlightened
  • *
  • Join Date: Feb 2011
  • Posts: 5684
  • Karma: 30
Re: Motor strip
« Reply #43 on: 05.03. 2018 13:07 »
My Plungy did not have that tube. I don't know when it was introduced.

Online tlmark

  • A's Best Friend
  • ***
  • Join Date: Aug 2016
  • Posts: 195
  • Karma: 2
  • Maidstone, Kent
Re: Motor strip
« Reply #44 on: 05.03. 2018 13:55 »
Hi Mark.
The tube needs o be removed as  the sludge gathers between it and the flywheel before it starts to fill the tube itself

John


Cheers John

I would have taken it today, I bought my Whitworth sockets in to take the flywheel bolt out only to find its not a Whitworth  *rant*

so may mixed types of nut and bolt  *problem*