this is what happens when...

[GVR40]

272 and heavy duty valve springs

 

[Kane_GSR]

May I ask where you work?

I work in a parts store, and we are able to deal with austral, though we generally use precision.

 

[GVR40]

read the signature dude...

 

[Jonson]

My question is why did you have the engine running for 10 minutes? That would have been making a hell of a noise....The new engine has to be better luck than this one. All the best mate

 

[rob323]

Heavy duty valve springs = high seat pressure = more stress on valve.
Aftermarket cams can sometimes have have dodgey ramp angles which slam the valve into the head rather than closing it gently = more stress on valve.
And no rev limit on the chip means it is quite possible to get valve bounce (= more stress on valve) and you found the next weakest link in the valve train.

Look at any 9000 rpm motor, they typically use fark off strong valves and light weight hollow cams to allow them to do those sort of revs safely.

 

[GVR40]

My question is why did you have the engine running for 10 minutes? That would have been making a hell of a noise....The new engine has to be better luck than this one. All the best mate

at the time it was my daily and I needed to get to work

 

[lefty]

128 valves? Surely its something else that is causing the valves to fail as they cannot all be manufacturing defects/faulty.

 

[GVR40]

16 - came in the car got replace after they burnt out
16 - (1st replacement)bent after the workshop that did the work didn't change the tensioners
16 - (2nd replacement)was after a bottom end rebuild and then oil pump ceased
16 - (3rd replacement)oil pump ceased again
16 - (4th replacement)timing was out by 2 teeth
16 - (5th replacement)timing belt slipped a tooth
16 - (6th replacement)oil pump bolt stripped and let all tension off the belt
16 - (7th replacement)current situation

 

[f1355spider]

16 - came in the car got replace after they burnt out
16 - (1st replacement)bent after the workshop that did the work didn't change the tensioners
16 - (2nd replacement)was after a bottom end rebuild and then oil pump ceased
16 - (3rd replacement)oil pump ceased again
16 - (4th replacement)timing was out by 2 teeth
16 - (5th replacement)timing belt slipped a tooth
16 - (6th replacement)oil pump bolt stripped and let all tension off the belt
16 - (7th replacement)current situation

Dude, If that happpened to me I would have burnt the car by now!
Good on you for sticking with it though, hope it works ou for you this time round..

 

[GVR40]

just think how good i should be at pulling heads off and putting timing belts on by now...

 

[kayarubin]

just think how good i should be at pulling heads off and putting timing belts on by now...

amen to that! i had to replace my head gasket 4 times on my nimbus's motor... i had it down to a fine art by the last one.. hopefully you have no more troubles man... let this be a lesson to all of us, use quality parts.. even if you have to save a couple of extra pays..

kaya.

 

[kayarubin]

oh and p.s. thanks GVR40 for the recommendation on the fidanza fly.. she is all in and spinnin nicely!