deep blue
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| posted on 17/3/11 at 02:35 PM |
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Marina ital axle questions
I am part way through building a Marlin marina based roadster in to a classic trialer.
This is quite common and usually involves fitting marina 1cwt axles and front hubs this gives a stronger rear axle and one able to be modified to
make a unit that will survive a few seasons of normal use.
I have fitted the van running gear, but have left over the standard marina axle, i read on the net on some caterham type site or piston heads some
one was or had known of a std marina axle being fitted with a ford sierra diff mention was made to transit diffs too. But sods law has it i can not
find the page again. Can any on here shed any light on the ford diff in marina ital axle case please. I am up for trying to do some thing with my old
ital axle as van axles are getting quite rare now. HELP!
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britishtrident
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| posted on 17/3/11 at 04:20 PM |
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It might be possible to fit a Ford English diif assembly from a Mk1 Escort or MKk1/ Mk2 Cortinta but the Sierra is a completely different
style. As for Transit diff transits used a great many different types of axles over the years most (but not all) were Salsbury pattern and I am
sure most of the diffs would be too big for the Triumph based axle used in the Marina.
[Edited on 17/3/11 by britishtrident]
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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cliftyhanger
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| posted on 17/3/11 at 06:14 PM |
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Intyeresting idea, but in my 20 odd years of Triumphs never heard of it before, and I have heard many odd things.
If it were possible I reckon a whole load of GT6/vitesse etc would have them in. Sorry.
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britishtrident
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| posted on 17/3/11 at 07:45 PM |
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Blame the Donald Stokes era at BL
It was based on the Standard 10 axle but wider --- related to the axle found in the Toledo/RWD 1500/some Dollomites. The Herald/Vitesse family
used the same final drive in an IRS case.
The PCD on the Marina front suspension had to be changed from the 4" pcd used in the Morris Minor & Austin A40 to the smaller Triumph
PCD.
Of course the Standard 10 axle was used in the Lotus Seven S1 &S2 until Chapman started buying factory surplus Nash Metropolitan axles very
cheaply.
Of course the Marina gearbox was also Triumph in origin -- but even less reliable when fitted into a Marina.
[Edited on 17/3/11 by britishtrident]
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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britishtrident
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| posted on 17/3/11 at 10:21 PM |
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quote:
Originally posted by cliftyhanger
Intyeresting idea, but in my 20 odd years of Triumphs never heard of it before, and I have heard many odd things.
If it were possible I reckon a whole load of GT6/vitesse etc would have them in. Sorry.
Odd thing a Triumph axle Heralds are not the only fruit
http://www.rimmerbros.co.uk/ProductImages/Large/GRID008479.jpg
The axle at the top is a Standard Triumph axle --- 1500 (RWD) , Toledo, Dolly, Triumph Pony ---- different brackets from Marina otherwise the
same.
Diff and CWP were similar to Hearald
[Edited on 17/3/11 by britishtrident]
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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deep blue
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| posted on 17/3/11 at 11:21 PM |
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Thanks for replies, i have had it pointed out to me by another marlin owner that mention is made on the wheelspin site here
http://www.wheelspin.info/sectionbegins/index.htm but only to transit diffs in the 10 cwt van axles (No.3 - BMC 10 cwt axles in the tech tips
section at the top )the B series Or Banjo ones, i have fitted now to the trialer. this aspect i must have become mistaken by some where along the
line, sorry. So i guess it is back to the drawing board aye. was a good idea but sadly most probably just not practical.
[Edited on 17/3/11 by deep blue]
[Edited on 17/3/11 by deep blue]
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britishtrident
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| posted on 18/3/11 at 07:43 AM |
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The easy way to a stronger axle is to use a complete axle from another live axle car of similar track width (Escort, Capri,Avenger, Hunter, Sunbeam,
MGB, late Dollomite) and weld on salvaged spring brackets from the Marina axle.
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deep blue
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| posted on 18/3/11 at 08:11 AM |
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fair point normally but I have to stay in the rules click marlin in the link here to outline the problem.
http://www.actc.org.uk/publications/specifications.htm
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britishtrident
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| posted on 18/3/11 at 08:39 AM |
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The axle regs are a bit too restrictive, ironic in that they allow the LDV gearbox but not the axle.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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deep blue
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| posted on 18/3/11 at 09:23 AM |
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Part of me wants to say hang class 7c altogether, and modify the hell out of the thing to make big improvements.
That way you get strong axles and a whole universe of engines to chose from, and if truth be known the class 7s look to me a new comer to having just
as many stops as class 8 so why struggle.
But i supose i have the 10cwt axles / hubs etc now so carry on regardless, but it is a quandary right enough.
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cliftyhanger
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| posted on 18/3/11 at 09:43 AM |
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The only dolly diff that is significant is the sprint, and available (ha ha, good luck) with LSD.
The rest are all similar design, just a variety of ratios from 4.11, 3.89 and 3.63. The very latest 3.63 also used in the spitfire 1500 has a slightly
stronger carrier, which can be used on any ratio. Best to consult a diff builder on the exact requirements (mike papworth has a very good reputation
with triumph racers)
Not sure if you are allowed as lsd, but they are available, but not cheap.
From my dabbling with a few PCT's the biggest problem is the diff actually has to work very hard, hence I decided to really cut down on them as
I was using my everyday car (triumph toledo, too heavy really)
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mogman1969
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| posted on 27/3/11 at 07:55 PM |
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that ital/marina van axle
late mgb salisbury axle has the same pcb , just a thought
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britishtrident
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| posted on 28/3/11 at 09:15 PM |
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The MGB 4.5"0 PCD is only the same as the very last Dollomites (and probably just the ones with slant 4 engine) 95% of Dolomites and all
Toledos Marinas used the much smaller Herald PCD
MGB unit wouldn't be allowed under the regs anyway.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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