Honda-SOHC

SOHC.co.uk Forums => CB350/400 => Topic started by: Triumphant59 on May 20, 2018, 09:13:46 AM

Title: Petrol tank repair
Post by: Triumphant59 on May 20, 2018, 09:13:46 AM
Hi. New to site, restoring a 1977 400f. Not been on the road since 92 the tank has 3/4 very small rust holes on the underside. I've done a temporary repair using tank seal from Halfords but wondered what options there are for a more permananent repair? Could anyone also recommend someone to respray and fit decals to said tank, preferably in East Midlands area?
Title: Re: Petrol tank repair
Post by: hairygit on May 20, 2018, 10:41:00 AM
Hi, and welcome to the madhouse. Brazing or welding is a far more enduring repair, bur make sure whoever does it is familiar with motorcycle fuel tanks. A member on here's local garage offered to do it, but destroyed the tank and nearly blew themselves up as they didn't make sure it was completely clear of residual fumes, and left the filler cap on when they started welding! If your not too fussed about originality, Dave Silver Spares sell replica tanks for a reasonable price.   
Title: Re: Petrol tank repair
Post by: mike the bike on May 20, 2018, 11:37:55 AM
The bottom of the tank gets thin all over.  There's no point in repairing each pin hole as more will soon appear.  Furthermore,  the rust dust will block the fuel filter.  It's a better repair to cut the affected parts out, both sides, and weld in new sections.  As Hairy has said, find an expert to do the job.  As you may have guessed,  I've had this bother before.
Title: Re: Petrol tank repair
Post by: haynes66 on May 20, 2018, 04:07:46 PM
look up MTS motorcycle tank repairs.  not cheap at  £50/hour but worth it.
Title: Re: Petrol tank repair
Post by: Nurse Julie on May 22, 2018, 08:11:29 PM
Welcome to the forum. If it were me, I would buy a new tank.
Title: Re: Petrol tank repair
Post by: PatM on May 24, 2018, 02:05:26 PM
I have to agree with Nurse Julie- Id buy a new tank. I have a spare for the time when I have to revert to it, but some pattern parts are worth considering- exhaust, master cylinder have been fitted to mine as althouh I dont use the bike much- i want it to be reliable. theres nothing worse than a brakedown on a nice summer weekned due to leaking petrol- which will do more dan=mage than you think! The RAC/AA may not get you home if its a leaking fuel problem.

Tank repair is a specialist job and difficult to find a reliable supplier to do it. As mentioned earlier- theres the dangers, but given you can find someone to overcome that element- you are going to need a re-spray afterdards anyway as welding/brazing might seem localised, but the heat inviolved may well cause bubbling on the shiny-bits.
Title: Re: Petrol tank repair
Post by: UK Pete on May 24, 2018, 06:47:47 PM
I must agree new tank
However I have had an epoxy resin repair last over 5 years so you could take the chance

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Title: Re: Petrol tank repair
Post by: Moorey on May 25, 2018, 11:40:15 AM
If it is just underneath they are easy to solder up, as long as you have a big iron to do it. I had to do mine nearly 3 years ago and it has been fine. I have also done others since and all have been good, and it doesn't damage the upper paint work;
I did this tank on this bike only 3 weeks after the whole bike was painted. He didn't expect to get away with not having to have it painted again.

[attachimg=1]
Title: Re: Petrol tank repair
Post by: mike the bike on May 25, 2018, 01:20:30 PM
See my comments above.  I'm glad it's worked for you but you'll be getting the iron out again before long.
Title: Re: Petrol tank repair
Post by: billywingnut on May 25, 2018, 02:15:58 PM
Hi, Once you've had it repaired be sure to use a tank liner and fit a new fuel filter. It's not cheap restoring one of these but good fun
Title: Re: Petrol tank repair
Post by: Nurse Julie on May 25, 2018, 02:18:39 PM
Don't use a tank liner.
Title: Re: Petrol tank repair
Post by: Moorey on May 25, 2018, 09:59:03 PM
See my comments above.  I'm glad it's worked for you but you'll be getting the iron out again before long.

Time will tell on that one. As mine has been fine now for nearly 3 years and the tank is in regular use, how long are you giving it before I have to get the iron out again.  :)
Title: Re: Petrol tank repair
Post by: taysidedragon on May 26, 2018, 01:14:03 AM
Don't use a tank liner.
My tank is in pretty good condition but I was thinking about using tank liner to make sure for the future. Why would that not be a good idea?
It would be great to save some time and cash if it's not necessary but I'm curious why that would not be good.
Title: Re: Petrol tank repair
Post by: hairygit on May 26, 2018, 06:42:50 AM
Because modern fuel (last 5 years) contains increasing amounts of ethanol, which turns lining materials to mush, allowing leaks to happen again, and blocking fuel taps and carb jets which a sticky mess.

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Title: Re: Petrol tank repair
Post by: royhall on May 26, 2018, 08:13:28 AM
Because modern fuel (last 5 years) contains increasing amounts of ethanol, which turns lining materials to mush, allowing leaks to happen again, and blocking fuel taps and carb jets which a sticky mess.

Sent from my X6pro using Tapatalk
There are now Ethanol proof liners, I'm sure that every lined tank Menno turns out is not a disaster. But I agree to a point, if you don't need it don't do it. With mine I used the same cleaner that comes with the liner kits to clean the insides of my tank. It came up spotless so I didn't line it. Bit of a problem if your tank leaks though, in this case a new tank would be my choice as they are available and the 400F paintwork is quite simple and cheap.
Title: Re: Petrol tank repair
Post by: Nurse Julie on May 26, 2018, 08:53:03 AM
Because modern fuel (last 5 years) contains increasing amounts of ethanol, which turns lining materials to mush, allowing leaks to happen again, and blocking fuel taps and carb jets which a sticky mess.

Sent from my X6pro using Tapatalk
There are now Ethanol proof liners, I'm sure that every lined tank Menno turns out is not a disaster. But I agree to a point, if you don't need it don't do it. With mine I used the same cleaner that comes with the liner kits to clean the insides of my tank. It came up spotless so I didn't line it. Bit of a problem if your tank leaks though, in this case a new tank would be my choice as they are available and the 400F paintwork is quite simple and cheap.
I'm know Menno doesn't line tanks routinely, only if the customer requests. His tanks are acid dipped prior to any work, so they are scrupulously clean inside before lining.
Title: Re: Petrol tank repair
Post by: Triumphant59 on June 02, 2018, 09:04:47 AM
Who is Menno?
Title: Re: Petrol tank repair
Post by: Nurse Julie on June 02, 2018, 09:14:50 AM
Who is Menno?
Menno Dek. Painter in Germany who many of us use on a regular basis for doing paint work on our classic Hondas. The best painter in my opinion and I know many others have the same view of his work.

http://www.tanklackieren.de
Title: Re: Petrol tank repair
Post by: SteveD CB500K0 on June 02, 2018, 12:58:09 PM
If Menno got his act together and sent me an image file, he’d be in the forum sponsors section with Piki and Marcel.



Steve


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Title: Re: Petrol tank repair
Post by: Nurse Julie on June 02, 2018, 01:38:57 PM
If Menno got his act together and sent me an image file, he’d be in the forum sponsors section with Piki and Marcel.



Steve


Sent from my iPhone using Tapatalk
He is a very, very busy man Steve.
Title: Re: Petrol tank repair
Post by: eem46 on June 05, 2018, 01:53:25 PM
Hi, has anyone ever painted a Honda CB 400 Four tank with Menno? Results? I did one set of a Honda CB 400 Four side covers plus tank, but was not happy with the result. The selfmade tank stickers by Menno (two layers) were not fully covered by clear coat, so there was a white reaction around them. He doesnt paint/seal the under side of the tank against corrosion. Side covers were not sanded on the side (frame tube side). I sent tank back for repair stickers and spraying underside, he never sanded or cleaned the underside, he just put a shot of paint on it and my clear coat now has metallic floks in it. Yes he offered to fix it again, but my patience was over. Maybe he is better with non CB400F tank with no stickers. But yeh I seen better painters..
Title: Re: Petrol tank repair
Post by: Green1 on June 05, 2018, 08:14:53 PM
I have a 550 painted by Menno and am very happy with it. I can see a defect in one side panel but that fine as its still superior to the original finish.
I think the clear coat is a little soft and when mentioned he offered to re coat for free even though I bought the bike pre painted from another forum member. I did not take him up on his very generous offer as I couldn't be bothered to send it off and didn't think it was worth it.
My 750 was painted by local painter and that also has a very minor defect that's also fine. The clear coat is a bit tougher even though painted in the same clear coat as the 550. From memory I think it was Sikkens so not cheap crap.
No one paints the underside of the tank to the same finish as the topside and No one paints the backs of the side panels.

I will also add that I have seen better but I have also seen much worse and I will be using Menno in the future as he stripped and cleaned the tank were as the other painter did not.
If you want your tank and panels backsides painted then you should ask.
Title: Re: Petrol tank repair
Post by: Laverda Dave on June 06, 2018, 09:02:01 AM
Men no recently painted my CB250RSA tank, side panels, front mudguard and seat cowl. Decals were made by Piki. Everything was perfect, no complaints whatsoever. Finish was far superior to standard and the decals were of excellent quality as always. I would have no hesitation to use Menno again.
http://www.sohc.co.uk/index.php/topic,11929.msg127665.html#msg127665
Title: Re: Petrol tank repair
Post by: eem46 on June 07, 2018, 07:58:56 AM
Hi Green1, I bought new black side cover for my Honda CB400F, I didnt mean he didn't painted the back side, I said he didn't sand and painted the sides nicely, he cut corners.
I hope my pic gets posted. Of course you don't finish the underside of the tank like the top side, but at least some color/paint to seal the white primer and with a ruby red tank and a bright white inside looks strange.

I am surprised that Menno use now Piki decals, one layer. I will contact him to redo my tank again (third time).

Kind regards,

Emiel
Title: Re: Petrol tank repair
Post by: eem46 on June 07, 2018, 08:53:07 AM
Here the two layer sticker Menno made himself, again he fixed it. But I prefer a printed one layer sticker, of course the aftermarkets versions can be bad quality and than the clear coat can run behind the edges.
Title: Re: Petrol tank repair
Post by: Green1 on June 07, 2018, 08:47:15 PM
OK fair enough complaint they do look rough.
Title: Re: Petrol tank repair
Post by: eem46 on June 08, 2018, 07:46:52 AM
Sidepanels were smooth on the outside, they are the black aftermarket versions like David Silver has, but even so, when they are rough you need to put filler/primer on and sand it! Like all paint work, the quality is set by the pre-work...
Title: Re: Petrol tank repair
Post by: Menno on June 08, 2018, 10:17:48 PM
Hello Emiel, I have painted this tank end 2014. Things have changed quite a bit since then.

And of course sometimes things can go wrong or repairs can go wrong.
But as everyone here knows as well I will solve any problems for free.
So please send me your tank and sidepanels as we agreed in october 2016 you would do.

On the other hand; I guess anyone would love to have his set painted for 365 euro including everything nowadays.

Yes Steve, you are right. I have to get my act together - sorry.
Title: Re: Petrol tank repair
Post by: Triumphant59 on June 09, 2018, 09:28:31 AM
Hello Emiel, I have painted this tank end 2014. Things have changed quite a bit since then.

And of course sometimes things can go wrong or repairs can go wrong.
But as everyone here knows as well I will solve any problems for free.
So please send me your tank and sidepanels as we agreed in october 2016 you would do.

On the other hand; I guess anyone would love to have his set painted for 365 euro including everything nowadays.

Yes Steve, you are right. I have to get my act together - sorry.

Do you have a set price to paint and re sticker tank and side panels for a 400/4 ? My tank has 4/5 vey small rust holes underneath would I need to get them soldered or can you do that?
Title: Re: Petrol tank repair
Post by: eem46 on June 11, 2018, 06:54:28 AM
Hi Menno,

I will contact you this week by mail.

Kind regards,

Emiel
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