Main Motorcycle: 2013 Thunderbird 1600 ABS
Join Date: Sep 2013
Location: Philadelphia, PA
Other Motorcycle: 2009 Triumph Bonneville
Hi New Guy. Welcome!
Expect about $800 if you don't need any adjustments; that should include a coolant flush and new plugs. Just getting the cam cover off takes about 3 hours; besides all the wiring to move, the coolant has to be drained and a metal coolant tube that runs from the radiator (front) to the thermostat (back) has to be removed. The actual checking of clearances takes like 15 minutes. If adjustments have to be made, they've got to pull the camshaft[s] for any cams that need new shims so you can add another $200 in that case.
I've got a 2013 and Triumph didn't have enough of a conscience to cover a fix. I don't think you've got anything to gain by letting a dealer discover a broken decompressor. I took a gamble by turning my bike over to my dealer that they'd be able to convince Triumph to cover repairs. They tried and I tried and we both got nowhere. I could have finished the job myself and cost me no more than a gallon of coolant but I gambled and lost. I delivered it with the cam cover already accessible and they charged me $400 to check clearances, button it back up and refill with coolant. I don't think that was out of line.
It's a great bike. Don't let all our grumbling about Triumph put you off. We just like to complain.
2013 Blue Marble Haze Thunderbird 1600 ABS
2009 Black Bonneville A1 ("Mag")
Last edited by PapaSmurfMC; 06-01-2019 at 11:23 PM.