Td5 vs TDCi: which Defender engine to live with
The last two Defender diesels split every owner. We put the five-cylinder Td5 and the Ford-era TDCi side by side on reliability, running costs and the drive itself.
A snorkel is only as good as its seals. Drilling, sealing and routing a raised air intake that actually keeps water out.
A snorkel is sold as a wading upgrade and fitted, far too often, as a leak. Done properly it gives the engine a cleaner, higher and drier source of air; done badly it quietly feeds dusty water straight past the filter. The whole difference is in the sealing, and almost none of it is in the plastic tube itself.
A raised intake does not make a Land Rover a submarine. Water still finds the axle and gearbox breathers, the door seals and the electrics long before it reaches a standard air intake, so extend the breathers and respect a sensible wading depth. The snorkel’s real everyday value is cleaner, cooler air on dusty trails — the deep-water heroics are the smaller part of the job.
Measure twice with the paper template, then measure again — the wing is a curved, painted panel and there is no undo. Drill pilot holes, open them out cleanly, and paint or wax every cut edge before anything goes back together, because bare steel behind a snorkel is where tomorrow’s rust bubble starts. Take your time here and the rest is easy.
Seal every joint from the head to the airbox: grommets through the wing, self-amalgamating tape on the tube joints, and a properly seated airbox connection. One loose clamp at the box undoes all the effort at the top. When it is together, block the intake and feel for the engine to stumble — if it does, the path is airtight; if it keeps running, you have a leak to find.
Test for leaks with the airbox on and the engine idling. Cover the snorkel head — a sealed system will visibly struggle within a second or two. If it keeps idling happily, air is getting in somewhere it should not.
A snorkel is not a tube you bolt on; it is a sealed path you build.
Dimitar Kolev · Off-Road Build Lead
Book it into the Ram Parts workshop, or order the parts and do it yourself — either way you get the same advice.