tensioner pulley came loose while the engine on tick over , belt slacked but didnt come off the cam pulleys and engine stalled threads in sud hole in head worn ... damaged valves ?

 

Hard to say! You'd have to do a compression test or blowdown test

 

prob had bent a few
seen this a few times, belt going at tickover(not on cossy's)
usualy still bent some valves, but sometimes the owner gets lucky so keep your fingers crossed
you need to time it up and fit new belt/tensioner realy to find out

 

gaz,is your car standard?or low comp? if the pistons are pocketed you may get away with it

 

Hi Neil mate - think theyre standard , dont really wanna remove the head as more work but do I take the risk of retiming up and hoping ? suppose its the only way forward to know for sure, also will need to get the stud hole re threaded so better off i suppose

 

whip it off, for the time it takes it will be worth it. sort the thread out and you can have a good look at the head.

If needed you can get a skim for around £30

Its quite an easy job, as long as you mark everything and make notes, ive just done a head recon and gasket on a Aston DBS (see resto section), and if i can do that then you should be able to do it

If the tensioner slackened theres a very big chance even tho the belt didnt come of that i has slipped a tooth.

You could always time it up and turn it over buy hand, for the sake of 15 mins, this will give you an indication of how bad the damage is if there is any.

But i wouldnt recomend firing it up, is there is damage to a valve or 2 then you could risk damage to the piston, block and head and then be in a right state.

You will soon see when the head comes off, first signs will be indentations in the piston crown.

If the valves are bent, for £30 you may as well get a skim, and or pressure test for £40
simply replace the valves and lap them in with some paste. check your clearences, head back on, new bolts. jobs a goodun.

good luck mate

can i ask why the tensioner came loose, i presuem you were doing some work, rather than it happening spontaineously (sp) ?

 

Hi Lee - yeah - taking head off now...... makes sense I know.... so few days ago changed rocker and gasket and while there had the belt off to bufty the cam pulleys- when I timed it up again and started it - noticed the belt was scoring on the outer edge of the tensioner pulley, when checked from above saw it was out of alignment... so slacked it off to re do and then found wobbly tensioner pulley .. stud in head was loose as threaded tried loctite on it overnight but next day when I started it it loosened off itself so no good...so sometime previously the bolt has been overtightened and turned the stud on itself in the head.. was gonna take it out to test drive and glad i didnt now...

 

good man, you bufftys never learn tho do you

Have you got any pics?
Maybe start up a thread like i did, i know it helped me out!

 

Agreed - for the sake of less than a hundred quid you could save yourself the grief of a £1000+ bill for a complete rebuild...

 

head off - damaged 2 inlet and 2 exhaust valves on no 2/3 cylinders.. so was right to inspect... so gonna strip it outy and get it sorted...

 

you did the right thing mate, imagine if youd timed it and fired her up

 

SCARY... dont go there !!!!

 

not good news gaz but at least you found it and can sort it.rather than cost yourself more.

 

for sure Neil, as above, I was gonna take it out mate... !!?? thank fook it went in the garage.