LCGB Forums

The ability to post messages is restricted to LCGB members. Any questions contact us at lcgbadmin@googlemail.com

J Engine

Technical help for Lui, Vega, Cometa, J50, Cento, J125, Starstream.

J Engine

Postby jonno » Sat Oct 23, 2021 9:41 pm

Im looking for the measurement across the engine mounts on J range engine. Has anyone got some dimensions please ?
User avatar
jonno
 
Posts: 339
Joined: Sat May 31, 2014 3:29 pm

Re: J Engine

Postby 57Speedster » Tue Oct 26, 2021 8:24 pm

I understand that there were 'variations' in the engine casing width at that point, depending on what model, (J50, J100 (Cento), J125 3-speed, J125 4-speed (Starstream)), and what type of engine mountings were used.
On early models the 2 big lugs on the engine casing were machined to take Cones, and these were used with dismantlable rubber mountings on the frame, later models had the lugs on the engine casing machined for bonded rubber mountings to be pressed in, these were used with another pair of bonded rubber mountings on the frame.
Which type do you need to check ? I have a 64 Cento, which has cones in the engine casing, but I fitted the later bonded rubber mountings on the frame, this combination needed some spacers between the cones and the mountings.
I'd be happy to measure for you, just need to know exactly where to measure, i.e. just across the cast lugs, (outer edges) of the engine casing ? or between the mountings /cones ?
User avatar
57Speedster
 
Posts: 42
Joined: Fri May 30, 2014 6:32 pm

Re: J Engine

Postby jonno » Tue Oct 26, 2021 9:34 pm

Hi thanks for the reply. I need the measurement across the cast part of the casings.
User avatar
jonno
 
Posts: 339
Joined: Sat May 31, 2014 3:29 pm

Re: J Engine

Postby coaster » Tue Oct 26, 2021 11:55 pm

jonno wrote:Hi thanks for the reply. I need the measurement across the cast part of the casings.


I'll measure my Vega casing in the morning if that helps?
User avatar
coaster
 
Posts: 2500
Joined: Fri May 30, 2014 1:00 pm
Location: Norfolk, Flying 8 Balls

Re: J Engine

Postby jonno » Wed Oct 27, 2021 5:15 pm

Thanks Coaster yes it will more info the better.
User avatar
jonno
 
Posts: 339
Joined: Sat May 31, 2014 3:29 pm

Re: J Engine

Postby coaster » Thu Oct 28, 2021 4:21 pm

I make it 180mm across the outside of the lugs 8-)
User avatar
coaster
 
Posts: 2500
Joined: Fri May 30, 2014 1:00 pm
Location: Norfolk, Flying 8 Balls

Re: J Engine

Postby jonno » Thu Oct 28, 2021 5:03 pm

Thanks. :D
User avatar
jonno
 
Posts: 339
Joined: Sat May 31, 2014 3:29 pm

Re: J Engine

Postby jonno » Fri Oct 29, 2021 9:26 pm

Just one more measurement I forgot about :oops: The distance from the centre of the engine mount hole to the centre of the rear wheel if you could.TIA
User avatar
jonno
 
Posts: 339
Joined: Sat May 31, 2014 3:29 pm

Re: J Engine

Postby 57Speedster » Sat Oct 30, 2021 1:32 pm

My 64 Cento engine, measures 185 mm across the outside edges of the mounting lugs.
From the centre of the engine mount hole to the centre of the rear wheel is 380 mm.
Hope that helps.
User avatar
57Speedster
 
Posts: 42
Joined: Fri May 30, 2014 6:32 pm

Re: J Engine

Postby coaster » Sat Oct 30, 2021 2:33 pm

57Speedster wrote:My 64 Cento engine, measures 185 mm across the outside edges of the mounting lugs.
From the centre of the engine mount hole to the centre of the rear wheel is 380 mm.
Hope that helps.


I'll re-check my measurements on Monday as was only using a tape measure and had to 'eyeball it' so could be a bit out :?
User avatar
coaster
 
Posts: 2500
Joined: Fri May 30, 2014 1:00 pm
Location: Norfolk, Flying 8 Balls

Re: J Engine

Postby jonno » Sat Oct 30, 2021 3:09 pm

Thanks guys, another step onward in a hairbrained scheme. :D
User avatar
jonno
 
Posts: 339
Joined: Sat May 31, 2014 3:29 pm


Return to Luna & J Range

Who is online

Users browsing this forum: No registered users and 1 guest