Camel Trophy, Ribtec 655, Fuel Tank

[tso_privat]

I am making complete refurb of an ex Camel Trophy. Console, seats, engine, tubes......

Question is. The two in deck fuel tanks, good advice, experience or ?

Do I have to take them out to check for leaks ? Any experience by a pressure test ?
Off course, I can just cut the deck open and check but....

Hope to hear any suggestions

Thanks

Best Thomas, Denmark...

[diver 1]

Easy to pressure test in situ IMHO

Drain as much fuel as possible then blank all the fuel connections bar one. I blanked the fuel filler by using a mountain bike inner tube cut in half lengthways, knot tied in each cut end then stuffed down the filler pipe and inflated until it formed a good seal.

I left the fuel feed hose open, blew air into the tank to slightly pressurise the tank then connected this hose to a simple clear silicon tube making a 'U' shape with some oil in it. The oil level is forced up the silicon tube by the air pressure to a certain point. Mark this point and monitor for a few hours. If the oil stays at the elevated level then the air pressure is not decreasing. I'm sure simple pressure gauges can be purchased instead.

[tso_privat]

Originally Posted by diver 1

Easy to pressure test in situ IMHO

Drain as much fuel as possible then blank all the fuel connections bar one. I blanked the fuel filler by using a mountain bike inner tube cut in half lengthways, knot tied in each cut end then stuffed down the filler pipe and inflated until it formed a good seal.

I left the fuel feed hose open, blew air into the tank to slightly pressurise the tank then connected this hose to a simple clear silicon tube making a 'U' shape with some oil in it. The oil level is forced up the silicon tube by the air pressure to a certain point. Mark this point and monitor for a few hours. If the oil stays at the elevated level then the air pressure is not decreasing. I'm sure simple pressure gauges can be purchased instead.

Thanks a lot

[Iron Dials]

What if the barometric pressure changes during the test?

[breezeblock]

Originally Posted by Iron Dials

What if the barometric pressure changes during the test?

then theres a leak somewhere