Latest topics
» Rewire to direct lighting
Today at 2:30 pm by dalgrae

» 8E Timing check
Yesterday at 7:51 pm by kerabo

» A few Falcon parts
Yesterday at 2:31 pm by kerabo

» Model 87 handle bars
Yesterday at 6:06 am by banjo boy

» Sun 98cc identification of parts
Thu Apr 27, 2017 8:01 am by kerabo

» Pannier Equipment
Tue Apr 25, 2017 4:33 pm by piston 197

» Francis B wanted
Tue Apr 25, 2017 3:42 pm by bart

» Cruiser 80 carburettor o rings.
Tue Apr 25, 2017 11:03 am by fulmar88

» tank badges
Mon Apr 24, 2017 9:17 pm by FrankG


Villiers 10e Question

View previous topic View next topic Go down

Villiers 10e Question

Post  Grahamb on Sun Nov 06, 2016 8:42 pm

Hi.

I have stripped my 10e engine mainly to find out why I could feel something binding through the foot rest. Which I now think was a low oil in the gear box, due to a shot main oil seal.

while riding I have always had a metallic rattle coming from the cylinder area. So today I was having a look at the head and barrel and noticed that the dome in the cylinder head is about 10mm smaller than the bore/piston diameter . Is this standard.

I was wondering if someone on the past has put a head from a smaller engine one this 10e engine .
Or do they use the same head on say a 150cc but machine the differently?
Can anyone confirm the dome diameter of a 197cc  head  please

Regards Graham
avatar
Grahamb

Posts : 7
Join date : 2016-11-06
Age : 64
Location : Carbrooke Norfolk

Back to top Go down

Villiers 10E

Post  tbird on Tue Nov 08, 2016 9:15 am

Hi Graham
Don't know anything about the 10E engine but love your avatar.

Hope you get it sorted.

Graham Barker
avatar
tbird

Posts : 320
Join date : 2012-01-20
Location : medway towns

Back to top Go down

Re: Villiers 10e Question

Post  Grahamb on Tue Nov 08, 2016 10:49 am

tbird wrote:Hi Graham
Don't know anything about the 10E engine but love your avatar.

Hope you get it sorted.

Graham Barker

Cheers Tbird ,
just started tinkering with mopeds and getting my head around 2 strokes.

avatar
Grahamb

Posts : 7
Join date : 2016-11-06
Age : 64
Location : Carbrooke Norfolk

Back to top Go down

dome size

Post  piston 197 on Tue Nov 08, 2016 11:32 am

Yes the dome of the head is about 3/8" all round smaller than the bore, this is squish banding and is supposed to be there, the smaller cylinder heads from the 150cc and 125cc engines have a smaller PCD for the bolts and will not fit the 197cc engine
JH
avatar
piston 197
Moderator

Posts : 3331
Join date : 2008-08-17
Location : ross-on-wye

Back to top Go down

Re: Villiers 10e Question

Post  Grahamb on Tue Nov 08, 2016 2:58 pm

piston 197 wrote:Yes the dome of the head is about 3/8" all round smaller than the bore, this is squish banding and is supposed to be there, the smaller cylinder heads from the 150cc and 125cc engines have a smaller PCD for the bolts and will not fit the 197cc engine
JH


Thanks for the reply .
I will measure the squish to see what it is, are you aware of the correct clearance and is it the done thing to taper the squish band towards the dome a couple of degrees.

Regards Graham

avatar
Grahamb

Posts : 7
Join date : 2016-11-06
Age : 64
Location : Carbrooke Norfolk

Back to top Go down

squish

Post  piston 197 on Tue Nov 08, 2016 3:25 pm

I skimmed the head and angled the squish about 15 degrees on a trials bike some years back and it made no difference at all ! You can have a go if you wish, but my experience tells me it will make no discernible difference ?
JH
avatar
piston 197
Moderator

Posts : 3331
Join date : 2008-08-17
Location : ross-on-wye

Back to top Go down

Squish

Post  Grahamb on Tue Nov 08, 2016 8:23 pm

piston 197 wrote:I skimmed the head and angled the squish about 15 degrees on a trials bike some years back and it made no difference at all ! You can have a go if you wish, but my experience tells me it will make no discernible difference ?
JH


I'll see what the squish measure and go from there.

I was reading up on squishes and came across a sentence saying something like, insufficient or incorrect squish can sound like a tin of stones being rattled . Which is the sound I have had ever since I got the bike.

Rode a friend FB the other week ( with 8e engine) ,had nothing like the level of sound emanating for the cylinder/head. (reason for this post)




avatar
Grahamb

Posts : 7
Join date : 2016-11-06
Age : 64
Location : Carbrooke Norfolk

Back to top Go down

Re: Villiers 10e Question

Post  Sponsored content


Sponsored content


Back to top Go down

View previous topic View next topic Back to top

- Similar topics

 
Permissions in this forum:
You cannot reply to topics in this forum