Renault Megane 1.4 16v 2001,timing belt failure help?

Question

Hi to all have the above car and the tensioner failed and the belt jumped a few teeth ,took the head off and all 16 valves hit pistons,the valves are not too bent as i was getting about 4 bar compression in each cylinder,will i get away with the pistons if i get the head sorted out........

Answer 1

The pistons and con rods are stronger than the valves and I have never had to replace the pistons after a cambelt failure on this engine. But check the valves guides as these can become oval-ed after hitting the pistons. Replace the valves and all should be OK

Answer 2

well i had two scenic's in last 4 months both cam belts gone on 1.4 16 valve 2000 and 2001 and both had holes in pistons just my luck as i work for renault and i buy broken cars to fix and give to missus to run for abit so i had to put two new engines lucky only costing  Ã‚£200 and £225 for other engine were as only costing me £120 for fixing bent valves not including labour which is free as i am doing it.

so very good luck to you as i have had no luck on these 1400 16 valve engines must admit never done a 1400 at work but every other type of engine i have done all been ok so depends on speed you were doing and YOUR LUCK

Answer 3

if the valves have hit the pistons they're bent, pressure should be about 12 bars, take the valves out and run them up in a lathe or a drilling machine, if a valve facer is not available, to see if they are bent, the engine is not going to run at 60 psi, it's most unlikely that the pistons are damaged.

Answer 4

As long as a piston is not holed it will be ok.Hope this helps