Upgrading to discs all round

Discuss and exchange views and technical information about our cars.

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Ethanol
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Upgrading to discs all round

Post by Ethanol » Sat Mar 02, 2019 12:23 pm

When I put the ethanol engine I've built in my Scimitar I really ort to upgrade the brakes. I have Lockheed callipers on the front but what's on the back is anyone's guess. The ethanol engine though built will need a multi-point injection system to start reliably anywhere but the tropics


When you increase the compression of any engine you make it more thermodynamically efficient, that makes it more powerful.

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Post by scimjim » Sat Mar 02, 2019 12:30 pm

You don’t really need discs on the back but it has been done before (I have a 5a with LSD and discs). For the fronts, there are various upgrades to vented - from willwoods off the shelf, to DIY using triumph discs normally.


Jim King

SECURE DRY STORAGE FOR YOUR SCIMITAR

Current: SE5 (8Ball), TI SS1 (snotty), 1600 SS1 (G97), 1600 SS1 (C686CCR), 2.5TD SE5a (diesel 5a), 6 x random other SS1s.
Previous: SE5, 3 x SE5a, 2 x SE6a, 3 x SE6b, GTC, 2.9i GTC, 3 x 1600 SS1, 1300 SS1, Mk1 Ti Sabre, Mk1.5 CVH Sabre
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Post by peter freeman » Sat Mar 02, 2019 3:06 pm

I have Wilwoods on the front of our MB which are much better than the Lockheeds ( the Girlings as per the earlier cars were better IMO ) - as Jim says I cannot think fitting discs to the rear worth the effort - probably reduce the effectiveness of the handbrake as well.



Ethanol
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Upgrading to discs all round

Post by Ethanol » Sat Mar 02, 2019 3:39 pm

scimjim wrote:
Sat Mar 02, 2019 12:30 pm
You don’t really need discs on the back but it has been done before (I have a 5a with LSD and discs). For the fronts, there are various upgrades to vented - from Willwoods off the shelf, to DIY using triumph discs normally.
The Triumph set up interests me both because I'm tight and because I think the suspension looks like SD1 which was actually designed by Triumph before the BL thing


When you increase the compression of any engine you make it more thermodynamically efficient, that makes it more powerful.

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Post by gtcse8 » Sat Mar 02, 2019 4:39 pm

Sorry but the Scimitar front suspension was designed and built by a company called Alford and Alder, later to become Alforder Newton Ltd.
It was then bought by Standard Motor Company and became part of Leyland Cars through its SU Butec division. :shock:

So Reliant bought the front suspension units from SU Butec, which just happened to have Stanpart embossed on most of its castings, which was the BL branding for lots of components. :?:

The SD1 used MacPherson strut units, so looked nothing like Scimitar` stuff ?. :w :W

Mark


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Post by scimjim » Sat Mar 02, 2019 5:01 pm

The SD1 was a Rover design - the proposal from Triumph was dropped although the BL Specialist Division (SD) was a joint Rover/Triumph organisation so it used the (heavily modified) Triumph straight six as well as the Rover V8.


Jim King

SECURE DRY STORAGE FOR YOUR SCIMITAR

Current: SE5 (8Ball), TI SS1 (snotty), 1600 SS1 (G97), 1600 SS1 (C686CCR), 2.5TD SE5a (diesel 5a), 6 x random other SS1s.
Previous: SE5, 3 x SE5a, 2 x SE6a, 3 x SE6b, GTC, 2.9i GTC, 3 x 1600 SS1, 1300 SS1, Mk1 Ti Sabre, Mk1.5 CVH Sabre
Chief mechanic for: 1400 K series SS1 (Megan3), 1400 CVH EFi SS1 (Grawpy), 1300 SS1 (Number One) & Sarah's coupe.
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Post by CNHSS1 » Sat Mar 02, 2019 6:07 pm

Mark and Jim
Hope you are both toasty warm in those 'Anoraks' :lol:


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Post by MikeyBikey » Sat Mar 02, 2019 6:27 pm

I have a 5a with Rover 800 coupe front disks and rear disks/calipers.

Front calipers are wilwoods. No servo.

Brakes are great but need warming up.

The rear discs do seem to add stopping power but I think I always had sh1te rears drums so Jim etc advice. Get drums sorted and you are ok. They are pretty big diameter although 6a is bigger still, I think


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Post by gtcse8 » Sat Mar 02, 2019 6:46 pm

CNHSS1 wrote:
Sat Mar 02, 2019 6:07 pm
Hope you are both toasty warm in those 'Anoraks'
I was going to add the bits that I know about the Special Division #1 but thought it was not really relevant as I made my point with the McPherson strut reference. :roll:
Won`t go into the "India information" on the local provided Diesel Engine in the Standard Car Company reincarnation after production in UK ceased :roll:


Mark Wilson. See the Beast on youtube under" RELIANT SCIMITAR CONVERSION LOL.,Se5,Se5a, Se6a, Two Se6b`s, GTC, SST 1800Ti & not a lot of sense

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Post by scimjim » Sat Mar 02, 2019 7:20 pm

Loved the SD1s my dad had - wish I’d been in a position to keep my grandads one owner, always garaged, FSH, 60k Miles uber rare 2000cc model when he died :(

Back on topic - much of the Scimitar front suspension is shared (at least in design) with the TR6.


Jim King

SECURE DRY STORAGE FOR YOUR SCIMITAR

Current: SE5 (8Ball), TI SS1 (snotty), 1600 SS1 (G97), 1600 SS1 (C686CCR), 2.5TD SE5a (diesel 5a), 6 x random other SS1s.
Previous: SE5, 3 x SE5a, 2 x SE6a, 3 x SE6b, GTC, 2.9i GTC, 3 x 1600 SS1, 1300 SS1, Mk1 Ti Sabre, Mk1.5 CVH Sabre
Chief mechanic for: 1400 K series SS1 (Megan3), 1400 CVH EFi SS1 (Grawpy), 1300 SS1 (Number One) & Sarah's coupe.
CURE THE FAULT - NOT THE SYMPTOMS

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Post by roymck » Sat Mar 02, 2019 7:51 pm

gtcse8 wrote:
Sat Mar 02, 2019 6:46 pm
CNHSS1 wrote:
Sat Mar 02, 2019 6:07 pm
Hope you are both toasty warm in those 'Anoraks'
I was going to add the bits that I know about the Special Division #1 but thought it was not really relevant as I made my point with the McPherson strut reference. :roll:
Won`t go into the "India information" on the local provided Diesel Engine in the Standard Car Company reincarnation after production in UK ceased :roll:
Oh please do!

Worst car I ever owned was a 2400 diesel SD1 , blame it on the rubbish Italian engine



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Post by efi_sprintgte » Sat Mar 02, 2019 8:13 pm

We tend to fit rear discs to the track cars because when the drum brake over heats the pedal looses feel.

The 6a onwards drum is much better then the earlier drum IMO.

I have had two double driven sprint cars using the 6a drum with Wilwoods up front and the brakes are fantastic, I would not bother fitting rear discs on a road or single lap sprint car again.


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Post by gtcse8 » Sat Mar 02, 2019 8:19 pm

roymck wrote:
Sat Mar 02, 2019 7:51 pm
blame it on the rubbish Italian engine
That was the VM engine, (VM Motori S.p.A), wholly owned by Fiat Chrysler Automobiles, rather than the 2l Diesel Ex Standard Vanguard engine that was made in back yards in Jaipur, and taken out of old motors, repainted and sold back to Standard :W :hand:


Mark Wilson. See the Beast on youtube under" RELIANT SCIMITAR CONVERSION LOL.,Se5,Se5a, Se6a, Two Se6b`s, GTC, SST 1800Ti & not a lot of sense

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Post by Ethanol » Sat Mar 02, 2019 10:09 pm

I read in the book 'The Triumph story' that the six-cylinder 2600 would do better HP than the Rover 3500. and it was only restricted to fit the SD1 range in the BL catalogue and then only by fitting a narrow exhaust manifold. Of the two cars, I wanted to own when I was at school the TR was one the other was, of course, was a Scimitar


When you increase the compression of any engine you make it more thermodynamically efficient, that makes it more powerful.

Ethanol
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Upgrading to discs all round

Post by Ethanol » Sun Mar 03, 2019 11:59 am

scimjim wrote:
Sat Mar 02, 2019 12:30 pm
You don’t really need discs on the back but it has been done before (I have a 5a with LSD and discs). For the fronts, there are various upgrades to vented - from Willwoods off the shelf, to DIY using triumph discs normally.
I've thought for a while that as the calliper is in two parts a spacer in the calliper and longer bolts would be all you need to fit ventilated discs on some hubs


When you increase the compression of any engine you make it more thermodynamically efficient, that makes it more powerful.

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