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Model differences 6 to 6a

Posted: Thu Jun 26, 2014 9:22 pm
by wdavie
Hi guys, I know different brakes were used between the 6 and 6a, what are the other main differences, and are things interchangeable? Cheers

Re: Model differences 6 to 6a

Posted: Fri Jun 27, 2014 2:12 pm
by Barrie James
In 1976, after producing 550 SE6s, Reliant introduced the SE6a, which had modifications to the door hinges and fittings, the spring rates were stiffened and the power steering operating pressure was adjusted. The SE6's Girling brakes were replaced by Lockheed brakes on the SE6as. There was also fluting on the trailing edges of the front bumpers on the SE6s, SE6as have bumpers without these, however, it appears that some early SE6as may have been fitted with them. 3887 SE6as were made.

Things are interchangeable, however, you may find a mix of SE6 & SE6a parts on most SE6s by now. You'll have to await a reply from someone more knowledgeable than I regarding the door hinges. I suspect though that the changes were to compensate for the longer and heavier door fitted to the 6s and Reliant were using 5/5a hinges on the early 6s.

Re: Model differences 6 to 6a

Posted: Fri Jun 27, 2014 2:14 pm
by philhoward
Rear seat squabs also changed, I gather.

Re: Model differences 6 to 6a

Posted: Fri Jun 27, 2014 5:41 pm
by scimjim
Bear in mind that a change in part number may only reflect a change of supplier, or a change of part number by the supplier but from the parts list:

At #1552 (ie after 551 SE6 were built): The front damper assembly was changed with an associated change in top & bottom bushes, nuts, bolts, washers and the addition of spacers (the parts list doesn't show the spring separately but the rear damper assy didn't change)
The caliper mounting plate on the upright was changed for the Lockheed calipers and new discs
BMC, servo, PDWA, pipework, etc
Rear brakes (all)
Handbrake cable, Clevis pin etc
clutch MC, pipe & salve cylinder
pedal mounting bracket and clutch pedal
Rear axle (?)
Front seats
Rear seats (base cushion & rear squabs)
My parts list doesn't show a change to the front bumper (flutes) at all but we know that it wasn't an SE6a change and it appears that most LHD cars got the earlier bumper.

6a changes:

ARB rubber mounts - 1848
Rear dampers - 3624 & 4507
Rear radius arms & bushes - 4950
PAS pump & pipes etc - 1826
Otter switch - 4307
Exhaust manifold - 3273
Clutch slave cylinder - 3578
Overdrive propshaft - 1819
Rear axle - 4950
Carb (tamperproof) and twin outlet fuel tank - 1415 (auto), 1693 (mod)
Air cleaner (auto winter flap) - 1415 (auto), 1681 (mod)
Wing mirrors - 1799
Rear bumper - 2703
Rear badges (overdrive/automatic) - "earlier models only" - note that LHD cars were always badged differently.
Sound deadening bags, rear - not fitted after 3045
Bonnet light & switch - 4550
Door trim - 1799 & 4588
Insulation/sealing behind door panel - 3698
Tan carpet replaced by chestnut - 4962
B post internal trim (black added and blue/tan changed numbers) and various interior trim such as sun visors - 4588
Centre console (mod) - 3680
Rear seat locks - 3537
Centre console side panels - 3761 & 4588
Front seats - 3894 & 4804 (blue leather), 3012 (blue nylon), 4844 (tan)
Rear seat (base cushion & rear squabs) - 3537 & 4804 (blue leather), 3012 (blue nylon), 4844 (tan), 4962 (chocolate nylon & leather, tan nylon & leather)
Front seat belts - 3537 & 4579
LHD headlamps - 3632
Headlamps (inner) - 3401
Headlamps (outer) - 3943
Door puddle lamps - introduced from 4550
Main wiring loom - 8M65/1840467 (chassis number typo in parts book)
Rear loom - 4662
Clock, hazard switch & HRW switch loom - 3385
Various body moulding changes - 4193 & 3631 (Belgium only)

Re: Model differences 6 to 6a

Posted: Fri Jun 27, 2014 6:01 pm
by Coupe Racing
Speedo was different and the chrome GTE badging relocated on the rear
Reflectors on rear air vents changed colour too

Re: Model differences 6 to 6a

Posted: Fri Jun 27, 2014 6:10 pm
by scimjim
No mention of the speedo in the parts manual? Badges mentioned but I forgot about the amber/red reflectors - again, not mentioned in the book and I'm not sure if they changed with the 6/6a or fluted front bumpers?

Re: Model differences 6 to 6a

Posted: Fri Jun 27, 2014 7:17 pm
by Coupe Racing
One speedo runs 10,30,50
Others run 20,40,60

Re: Model differences 6 to 6a

Posted: Sat Jun 28, 2014 9:26 pm
by scimjim
Checked some speedos today - v6 coupe:

Image

Same as SE5:

Image

Same as SE5a (plastic drive cable clip rather than metal screw on type):

Image

But SE6 is very different:

Image

And 6a is different again:

Image

Re: Model differences 6 to 6a

Posted: Sat Jun 28, 2014 9:44 pm
by philhoward
Splitting hairs but 5 and 5a are different cable fittings.

Re: Model differences 6 to 6a

Posted: Sat Jun 28, 2014 9:54 pm
by MarkHawkins
The speedo in OPJ 62R looks like the 6 type - marked in 10's up to 140. I presume it was changed out at some point? - most other things on the car have. Personally I think I prefer the 5a instrumentation - oil and temp gauges right in front of me.

Re: Model differences 6 to 6a

Posted: Sat Jun 28, 2014 10:06 pm
by scimjim
I wonder if it is an SE6/6a difference then? Could just be a stock runout early on.

One of the SE6 in the storage has the type I labelled 6a above - could just be whatever's available if you need to replace it?

Re: Model differences 6 to 6a

Posted: Sat Jun 28, 2014 10:23 pm
by MarkHawkins
How does concourse judging work when there isn't so much a factory standard but a 'most common' configuration?

Re: Model differences 6 to 6a

Posted: Sun Jun 29, 2014 8:24 pm
by Coupe Racing
Glad I've highlighted the speedo issue

Until Jims investigations I found very people believed me

Re: Model differences 6 to 6a

Posted: Mon Jun 30, 2014 12:15 am
by Roger Pennington
MarkHawkins wrote:How does concourse judging work when there isn't so much a factory standard but a 'most common' configuration?
Kev or Keith (concours supremos :wink: ) may like to comment further, but essentially, within the RSSOC, concours judging is primarily condition-orientated, with little (if any) account taken of originality :w

Having said that, I don't think it's really true to say that "there isn't a factory standard" - there may be some variations, but what car doesn't have those? Manufacturers' documentation will normally contain some disclaimer along the lines of "we continue to make improvements and reserve the right to change details..... blah, blah, blah....."
Also, in the example of the speedos above, while Jim has listed 5 variations, only 2 of those would be found on a 6-on series - hardly a wide range of variation? :)

Model differences 6 to 6a

Posted: Wed Mar 14, 2018 1:47 pm
by Thomaswo
Hi, I've got a question concerning the attached photos. The car is from 1977. Is it a SE6 or SE6a?
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