Late 6a carburettor

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TrevorG
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Late 6a carburettor

Post by TrevorG » Wed Jun 05, 2019 4:35 pm

Still waiting on the engine block to return from refacing, so I've been working on all ancillaries. Everything now refurbed except the carb. The car is a 79 6a with, I'm sure, a tamper proof carb. Is there any job I can do to this, like clean out (it had stood with stale fuel for ages and evaporated) and renew all the diaphragms and gaskets? Or possibly just sonic clean it (mate has a large sonic cleaner) flush out and hope for the best?

I'm still wanting and trying to do everything myself as a labour of love and it will hurt to have to send the carb away as all the manuals state, especially as I've done everything else.



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scimjim
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Late 6a carburettor

Post by scimjim » Wed Jun 05, 2019 4:42 pm

You can still by refurb kits with diaphragms etc - I’d get it sonic cleaned too if you have access to one. Two things to look for are a bowed base where it’s been overtightened (file flat) and worn throttle plate spindle holes (you used to be able to get nylon inserts?)


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Late 6a carburettor

Post by Old and Slow » Wed Jun 05, 2019 4:50 pm

One way to re-flatten a carb face flat is to use grinding paste on an old mirror, as the glass is usually flat to begin with. Initial rubbing also shows up the high spots.
Just a suggestion, hope this helps.


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Late 6a carburettor

Post by gtcse8 » Wed Jun 05, 2019 4:55 pm

Less messy and quicker Phil is a sheet of fine wet and dry face up on the same mirror :lol: :wink:


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Late 6a carburettor

Post by TrevorG » Wed Jun 05, 2019 5:20 pm

Thanks guys....I've got a face plate that I've had since my rr days, useful for setting up the main cutting blades on greens mowers that I get to reface! Great for checking cylinder heads as well.

I didn't want to take the carb apart if I was going to break any of the tamperproofing.
I'm assuming then, that the only tamperproof bits are the jets and mixture screw?



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Late 6a carburettor

Post by gtcse8 » Wed Jun 05, 2019 6:25 pm

Tamper-proof caps only fitted to the Mixture Screws.
Probably removed by now ??


Mark Wilson. See the Beast on youtube under" RELIANT SCIMITAR CONVERSION LOL.,Se5,Se5a, Se6a, Two Se6b`s,1 & 1/2 GTC`s, SST 1800Ti & not a lot of sense

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Late 6a carburettor

Post by scimjim » Wed Jun 05, 2019 6:27 pm

I think tamper-proofing on a DGAS is just plastic caps covering the idle mixture adjustment screws.


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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Late 6a carburettor

Post by TrevorG » Wed Jun 05, 2019 7:17 pm

Great....many thanks. Job for rainy Friday methinks.



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Late 6a carburettor

Post by scimitargtc » Wed Jun 05, 2019 10:00 pm

No tamperproofing to worry about. Just had mine apart (5) times in the month and mine is also a 79


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Late 6a carburettor

Post by TrevorG » Thu Jun 06, 2019 12:58 am

Been talking to the carb guys in Monmouth and they've said the really tamperproof dgas carbs were never fitted to scimitars as they were produced much later. As you've all said....it's just a couple of plugs/caps so at least I can enjoy more spannerwork!



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