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New chrome tank for a J
#814611 06/30/20 10:55 pm
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Rohan Offline OP
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So I decided it was time to spruce up the old Enfield, a circa 1947 Model J,
and ordered a chrome tank for it from one of the (many) suppliers in India.

Couple of weeks later it was here, plague restrictions and all.
Delivered by Fedex no less.
I had enquired of the seller if there were any freight links, and they replied
they could get it delivered.- all in the std price quoted.

There are a range of colour schemes on the tanks on sale - I went with the cheapest !
I'm not entirely sure what my bikes original scheme would have been, but I'm fairly sure that red
decals and gold striping probably wasn't one of them. But it still looks good.
I might redo the pinstripes at some later stage.

It arrived, packed into a carton with miles of padding !
And looks good I have to say.
Now I've done a chrome plating course, and know the perils of trying to plate something with
lumps and bumps and wavy lines in the metal - and this seems to have none of that.
Top notch, so far.
And it came with a bayonet cap - not shown in the pics, nor mentioned - and fits and opens/closes very nicely.
The kneepad bolts are metric - I kinda expected that.
The mounting points underneath line up with the frame very nicely.
Its got all the right cutout underneath to take an ohv top end.

I need to find some taps for it, and leak test it - but I can't see any daylight when you look through the tank cap
and hold it up to the sunlight. A good sign ... !!

I'm impressed, so far. Especially at the price.
I couldn't even get a tank chromed here at such low $$.
Let alone all the polishing/work.


[Linked Image from i.ebayimg.com]

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Re: New chrome tank for a J
Rohan #814615 06/30/20 11:15 pm
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I could have selected just a plain chrome tank, and painted it to suit.
But it was nearly double the price.
More is less, or less is more ??

https://i.ebayimg.com/images/g/iE8AAOSwhcNahrYc/s-l1600.jpg

Fricking robots, they've got a lot to answer for ...

Re: New chrome tank for a J
Rohan #814671 07/01/20 1:09 pm
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Looks very nice.
I think the Indians have refined their product quality quite a bit.


Will work for Guinness smile
Re: New chrome tank for a J
Rohan #814797 07/02/20 1:12 pm
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Thinking of doing the same as the chrome on my J2 tank is peeling and the cost and likely result is not encouraging. Can you take a pic of the underside of the tank now you’ve confirmed it fits the J p,ease? I’m assuming the J2 has the same architecture. I’ve seen 2 different undersides in the Indian tanks and don’t want to get it wrong.
I should note my bike isn’t with me at the moment so I can’t check it personally.
Also are the mounting bolt holes cycle thread as per original?
Thanks
Chris

Last edited by ChrisX; 07/02/20 1:13 pm.

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Re: New chrome tank for a J
Rohan #814852 07/03/20 5:24 am
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Rohan Offline OP
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This is the underside view accompanying the sale of the tank I bought.
Note that I found it on the UK eBay site, the Oz site doesn't seem to have the same range of prices. ?
There are a range of suppliers, who all show the underneath, some with mm marked out.

https://i.ebayimg.com/images/g/aaQAAOSwkfReMT9~/s-l1600.jpg

Thats interesting about the 2 different underneaths.
Do you know where or how they differ ??
And what would prevent them from fitting ?

I haven't quite yet verified that the tank mounting bolts using cycle thread are needed.
They are not metric, and they look like they could be cycle thread.
Give me a day or 2 to rustle up some to try and absolutely confirm.

Note that posting takes a week or more after ordering, they have to get them from someplace.
It would be interesting to speculate what they pay for them from that source,
they must be banging them out for sixpence by the time everyone gets their cut ?

Re: New chrome tank for a J
Rohan #814853 07/03/20 5:33 am
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btw, I think this is a closer match for the rijjinal paint scheme of this era of Enfield.
They are priced at from +100 quids more than the one I bought.

https://i.ebayimg.com/images/g/SakAAOSw1txeayN0/s-l1600.jpg

???

I'd say this is the same tank ?, so its going to a different paint shop ...

Re: New chrome tank for a J
Rohan #814864 07/03/20 11:48 am
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HI Rohan

I was after a red striped one as that is how may current tank is trimmed. A bit difficult to find out exactly what is correct. The 'other' base is symmetrical either side of the tank valley and similar to the small side of the picture you posted.

https://i.ebayimg.com/images/g/zscAAOSwCD5e0p67/s-l1600.jpg

Again I have no idea if the cylinder head architecture is the same for the J and J2. I thought it would be but maybe not.
As i said my bike is elsewhere but i recall the tank base being assymetrical like the one you posted. Strange that they say it fits the same models. Who would know. I may have to get my tank and measure it before i cough up the money.
Thanks
Chris

Last edited by ChrisX; 07/03/20 11:53 am.

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Re: New chrome tank for a J
ChrisX #814865 07/03/20 12:01 pm
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Red tank stripes

[Linked Image from i87.photobucket.com]

As i said the refs Ive seen can say different hings re colours and it may well change year to year. The black will do me if it fits properly. The top panel on the Indian tanks is wildly inaccurate anyway and some years may not even have has one but it doesn’t worry me.

Chris

Last edited by ChrisX; 07/03/20 12:07 pm.

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Re: New chrome tank for a J
ChrisX #814941 07/03/20 11:01 pm
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Ooh no, that wouldn't fit anything ohv I have, one side of the head really sticks out from under the backbone.
That could suit a sidevalve model (prewar or WD), I have such a project.
I have a J2 head (not currently fitted to anything) its about the same as a J but has 2 exhaust ports.
(The exhaust port(s) point at a different angle, so you can't use a pipe from a J on a J2 though)

Nice J2 you have there, recall you showed it before.
I love all those sheds in the background !

I had in mind the paint could be stripped off this tank, and the panels and pinstripes redone to suit.
Given how expensive the only bare chrome tanks are, still be ahead. Crazy or what...
I think that silver tank I showed above could be correct for a prewar model. ?

Re: New chrome tank for a J
Rohan #815324 07/07/20 4:25 am
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Rohan Offline OP
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Originally Posted by Rohan
I haven't quite yet verified ___ the tank mounting bolts <snip>
They are not metric, and they look like they could be cycle thread.
Give me a day or 2 to rustle up some to try and absolutely confirm.

With a bit of testing, the tank mounting bolt holes look to be 5/16 UNF
and not the 3/8 Cycle Thread my rijjinal tank is.

Looks like it would be easy to drill them and tap them to 3/8 BSCy, but I'll think on it.

[Linked Image from i.postimg.cc]

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Re: New chrome tank for a J
Rohan #815343 07/07/20 11:28 am
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Thanks, Interesting. I still ,haven’t been able to get at my tank and check things out. Too much happening. Soon.


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Re: New chrome tank for a J
Rohan #815415 07/07/20 9:37 pm
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There's a reason the original fasteners are stepped from a plain (unthreaded) diameter to a smaller threaded end, ... and in doing so, creating an abutment shoulder.

It is that way on purpose to eliminate the possibility of someone screwing the tank bolt in so far that it punctures the floor of the tank. The abutment also prevents tightening to the point the tank rubbers collapse.

.. Gregg


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Re: New chrome tank for a J
Rohan #815437 07/07/20 11:10 pm
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Rohan Offline OP
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Yes indeedy, and thats a timely reminder here.
Thanks.
You'll notice that only the bottom 1/4" of my 5/16" test UNF bolt has a used look to it..

One of my older tanks has been converted to all studs, and them all either welded or soldered there.
I suppose thats what you resort to when all the originals all drop out, and you are out in whoop whoop

Re: New chrome tank for a J
Rohan #815448 07/08/20 12:18 am
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True enough: these poor old bikes have lived through a lot, in the hands of folks who likely didn't have the skills, tools or interest to look after them. In a way, it is quite something that so many of them have survived so well!

.. gREgg


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