Petrol, tank removal on SV road sport

[Derek Batty]

Hi  just got seven back from garage after service and check over , he said there was a pinhole in the bottom of the tank , ok now but will need fixing , my son is a metal fabricator and says can make me a new one in stainless , just wondered how easy they are to get out , would assume they drop down ?? 

Derek 

[StevehS3]

Hi Derek, please be careful in choosing materials for use in explosive atmospheres. Some metals are more prone to generating sparks. I am not saying stainless steel is a problem but it needs checking (if you haven’t already).

Steve

 

[Derek Batty]

Thanks Steve son can make me one in any metal I choose so will look into it ,,he does a lot of work on fuel tanks for a lot of TT riders  if they get problems 

derek 

[SM25T]

The tank sits down onto two angle frames and in held down by an angle with two long bolts. I think I you would have to lift it up through the boot after taking the floor out. Not sure if you can angle it enough to get it through the roll cage, or if you need to remove the cage first.

[D Jones]

Derek, this was my first maintenance job on my SV.

pinholes in the underside of the fuel tank, probably from contact with the steel angles.

drained most of the fuel and then lifted it out of the boot ( remove the  roll bar and boot floor first, I didn't remove the roll bar and you can learn by my mistake!)

i repaired the tank with a fuel safe resin as suggested on blatchat, and that was 4 years ago with no further problems

i can probably find the make I used if you need further advice, let me know.

[Derek Batty]

Thanks for info but as son  is a metal fabricator he is going to make me a new tank ,there is just a couple of very small pin holes in bottom of tank ,poss stone chips ?

derek

[D Jones]

Derek, that's a handy son to have, I think my holes were caused by contact between steel and ally, where the tank sits on the chassis.

Assuming you fabricate the new tank in ally, make sure you isolate the contact points. I used the black sticky back foam used under the bonnet.

Good luck

[D Jones]

By a strange coincidence, I've just been watching chasing classic cars and Wayne Carini just fixed a leaking Cobra fuel tank with JB Weld resin, that was the product I used.

[Dr Slotter]

If you have access to an inspection pit or decent height ramps, you can take the tank out by removing the bootfloor and then extracting from underneath the car. No need to take roll bar/cage off.

[Jerry Auton]

Just to add another option. I removed mine last winter to clean up and repaint the support brackets and it came up through the boor with a bit of jiggling with out removing the Track Day Double Diag Roll Bar ( Imperial SV). You have a few options by the looks of it. Definitely take time to clean up and repaint the support brackets while you have the opportunity.

[Derek Batty]

Hi Dave mine has a pin hole on the bottom side 

thanks all for the info 

of to Scotland on wed morn so bought a twin pack metal weld just in case also a van Tyre inflator ,even though carry spare wheel 

you can tell I was a Boy Scout , just wondering were to put the portable bog 

Derek 

[TomB]

One solution not mentioned to the forming of pin holes in the tank where it sits on the chassis / mounting bracket, is to insert the aluminium honeycomb undertank protector piece.  This gives added protection from the underside of the tank from stones etc, and means the full floor of the tank is supported, rather than just at the mountings. My car, being an ex-racer has this and its still on the original 23 year old tank.   

[D Jones]

Derek, get your son to fit two separate linked tanks and fit the bog into the boot, keeping the rim flush with the cover, discharge onto the road (like BR used to do) that way if you get caught short in Scotland miles from no where you can just sit on the back of the car, and nobody will know. 

[Jonathan Kay]

... like BR used to do... 

And amazingly still do.

https://www.theguardian.com/uk-news/2017/oct/10/train-toilets-to-no-longer-empty-on-to-tracks

but it's now been moved to 2020.

Jonathan

[Manstein]

I recall Brian Johnston was recording a train departure from London sat in a trench under the tracks when he and his sound recordist were the subject of a direct hit from a flushing toilet. Heroically he finished the broadcast!

[Mark Gregory]

Shame it wasn't Boris Johnson........

[Derek Batty]

Son.  looked at tank before we left iom said no problem but just in case put liquid metal patch over just to be on safe side , 

derek