Marina 262 Suspension Analysis

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locost_bryan
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Joined: Fri May 22, 2009 2:43 am
Location: Auckland, New Zealand

Marina 262 Suspension Analysis

Post by locost_bryan » Mon Jan 14, 2013 10:55 pm

This technical analysis of the Leyland Marina 262 was posted on the OzMarina Yahoo group (thanks, Adrian/Yowee :) ).

May not be entirely relevant to the UK Marina, as the 262 had the bigger and heavier E6 engine, and Leyland Australia made a number of changes to the suspension and steering systems to fit it (and the BW 3-speed gearbox).

CONCLUSION
From the study carried out, the following design changes were recommended :-
1. Front spring rate to be changed from 115 lb/in, to 142 lb/in
2. Repositioning of lower wishbone to cut down the jacking effect
3. Lowering of the roll centres in conjunction with the installation of anti-roIl bars
4. Increase of front wheel travel
5. Attention should be given to damper settings
6. Reduction of front track change on bump

It was also considered that replacing the torsion bar with a coil damper unit could give better damper settings together with a more economical assembly.
Bryan
Auckland NZ

1972 Morris Marina 1750 TC Coupe "Ozzy"

bigcarle
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Joined: Tue Apr 01, 2008 3:41 am
Location: brisbane, queensland, australia

Re: Marina 262 Suspension Analysis

Post by bigcarle » Sat Jan 19, 2013 5:23 am

the latest info i am getting is the 2620cc 6cyl 'E" series was 20lbs LIGHTER than the 1800cc 'B' series engine :o

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locost_bryan
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Location: Auckland, New Zealand

Re: Marina 262 Suspension Analysis

Post by locost_bryan » Mon Jan 21, 2013 1:13 am

bigcarle wrote:the latest info i am getting is the 2620cc 6cyl 'E" series was 20lbs LIGHTER than the 1800cc 'B' series engine :o
The fgures I have noted from the factory workshop manual are :-
E4 151kg + Triumph 4-speed 21kg = 172kg
E6 175kg + BW 3-speed 41kg = 216kg

For the B-series, from this MGB site :-
MGB 173kg + 4-speed o/d 52kg = 225kg

Although 180kg is claimed here.

Therefore, 1800 TC should be 173kg + 21kg = 194kg

For comparison, a Rover V8 should weight about 165kg + 50kg LT77 5-speed = 215kg. No wonder the MGB V8 was such a rocket. :-D
Bryan
Auckland NZ

1972 Morris Marina 1750 TC Coupe "Ozzy"

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