J Engine
Posted:
Sat Oct 23, 2021 9:41 pmby jonno
Im looking for the measurement across the engine mounts on J range engine. Has anyone got some dimensions please ?
Re: J Engine
Posted:
Tue Oct 26, 2021 8:24 pmby 57Speedster
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 ?
Re: J Engine
Posted:
Tue Oct 26, 2021 9:34 pmby jonno
Hi thanks for the reply. I need the measurement across the cast part of the casings.
Re: J Engine
Posted:
Tue Oct 26, 2021 11:55 pmby coaster
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?
Re: J Engine
Posted:
Wed Oct 27, 2021 5:15 pmby jonno
Thanks Coaster yes it will more info the better.
Re: J Engine
Posted:
Thu Oct 28, 2021 4:21 pmby coaster
I make it 180mm across the outside of the lugs
Re: J Engine
Posted:
Fri Oct 29, 2021 9:26 pmby jonno
Just one more measurement I forgot about
The distance from the centre of the engine mount hole to the centre of the rear wheel if you could.TIA
Re: J Engine
Posted:
Sat Oct 30, 2021 1:32 pmby 57Speedster
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.
Re: J Engine
Posted:
Sat Oct 30, 2021 2:33 pmby coaster
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
Re: J Engine
Posted:
Sat Oct 30, 2021 3:09 pmby jonno
Thanks guys, another step onward in a hairbrained scheme.
