nib1980
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| posted on 18/5/07 at 07:13 AM |
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Time for another of my stupid questions
Morning all,
My fuel level sender from rally design turned up yesterday, looks a nice simple piece of kit. and for once it's not the electrics i have a
problem with.
My question is, how do i bolt it in, when i can only get to one side if it? my guess is some kind of self tapping screw, but that cant be right?
suggestions and pics would be very helpful
many thanks
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Howlor
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| posted on 18/5/07 at 07:20 AM |
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Yep if an ali tank then you can use self tappers. You could use small rivnuts but you will need to smear a petrol resistant sealer around them
first.
Steve
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MikeRJ
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| posted on 18/5/07 at 07:22 AM |
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Rivnuts are the favoured choice for this application if your tank doesn't have captive nuts built in. Self tappers aren't a great idea
for this purpose (or in fact many purposes at all!).
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wilkingj
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| posted on 18/5/07 at 07:35 AM |
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I used M3 rivnuts, a Cork Gasket from a Land Rove Series 3 (depends on the size and hole layout, and I think it was hylomar to seal. Anyway, it hasnt
leaked in 3000 miles and a year of use.
Tighten down the screws evenly and go opposites, so you pull it down squarely.
ie as its ally, no distortion. Perhaps a little overkill... but easy to do.
EDIT:
Make sure you properly earth the metal of the fuel sender. I ran a separate earth and put a ring tag under one of the screws securing the sender,
rather than earth through the tank and bolts.
Electricity and Petrol in close proximity... Think about it! Dont take any risks!
[Edited on 18/5/2007 by wilkingj]
1. The point of a journey is not to arrive.
2. Never take life seriously. Nobody gets out alive anyway.
Best Regards
Geoff
http://www.v8viento.co.uk
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02GF74
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| posted on 18/5/07 at 08:23 AM |
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how thick is the tank? drill and tap holes to take m4 bolts.
you cold try glueing tapped thicket meta lstrip on the underside that hopefully would stay on when you come to fit the scrtews - sods law mean that 5
will but the 6th one will be out of alignment and fall into the tank.
or rivets if you can knock the broken off steel bit and then tap the inside?
I go with the rest and say rivnuts;
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chockymonster
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| posted on 18/5/07 at 08:49 AM |
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I used petrol resistant m5 anchor nuts with blind rivets. They have an o-ring that seals them to the inside of the tank and the blind rivets were
coated in a petrol resistant sealer (PR 1422B2) it's used to seal fuel tanks on planes! The joy of the nutplates is they are floating so if the
hole doesn't quite line up then it isn't an issue (thankfully!)[img]http://locostbuilders.co.uk/upload/a560091-IMG_5195 [640x480].JPG[/img]
PLEASE NOTE - Responses on Forum Threads may contain Sarcasm and may not be suitable for the hard of Thinking.
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millemg
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| posted on 18/5/07 at 09:15 AM |
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I just drilled the 5 holes, then put m4 stainless bolts through from the inside of the tank, and tigtened the nuts on top with loctite, dead
easy.!!!
[Edited on 18/5/07 by millemg]
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nib1980
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| posted on 18/5/07 at 09:34 AM |
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quote:
Originally posted by millemg
I just drilled the 5 holes, then put m4 stainless bolts through from the inside of the tank, and tigtened the nuts on top with loctite, dead
easy.!!!
but how did you get the bolts to stay while you lowered the sender on? P.S. that looks exactly like mine!
[Edited on 18/5/07 by millemg]
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millemg
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| posted on 18/5/07 at 09:38 AM |
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NOT ANOTHER STUPID QUESTION SURELY
Here's a clue, it came to me when I was in bed one night 
PS - you need shakeproof washers on the bolt heads inside the tank so they won't rotate as you tighten the nuts 
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Bob C
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| posted on 18/5/07 at 11:55 AM |
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the proper answer is to make a C shaped bar with threaded holes to go inside the tank (being C shaped you'll get it thru the hole in the
tank)
Then have 2 longer screws (say 50mm long) to get things started - the rest can be shorties
Bob
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02GF74
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| posted on 18/5/07 at 11:55 AM |
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stuff like this always reminds me of the song by Ian Dury and the Blockheads, "there ain't 'alf been some clever b*%tards".
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flak monkey
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| posted on 18/5/07 at 11:58 AM |
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quote:
Originally posted by Bob C
the proper answer is to make a C shaped bar with threaded holes to go inside the tank (being C shaped you'll get it thru the hole in the
tank)
Then have 2 longer screws (say 50mm long) to get things started - the rest can be shorties
Bob
Yep, thats the way. You can just make a ring of say 5mm thick ali, drilled and tapped. And cut about 5mm out of the circumference of it, between 2 of
the holes. Pop it in the tank and hold it with a couple of long screws so you can still get your ahnd in to stop the ring dropping into the tank.
After you have a couple in, just pop the rest of the screws in as normal.
Job done.
Sera
http://www.motosera.com
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James
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| posted on 18/5/07 at 01:47 PM |
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Not that, is a thoroughly bloody good way of doing it....
why the nutsack did no one tell me that *before* I put mine in with leaky rivnuts! 
Ah well!
Cheers,
James
------------------------------------------------------------------------------------------------------------
"The fight is won or lost far away from witnesses, behind the lines, in the gym and out there on the road, long before I dance under those lights."
- Muhammad Ali
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millemg
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| posted on 18/5/07 at 02:58 PM |
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My way took 5 mins
By the way, it's only the tank you turn upside down, not the whole car
[Edited on 18/5/07 by millemg]
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