too tight??

[speedymacfish]

Is it possible to tighten the head too tight???
just put on a new head but now the engine will not turn?? I'm trying to turn the bottom crank but it keeps stopping half way round and then the same the other way?? Any ideas?




G

[speedymacfish]

Is it possible to tighten the head too tight???
just put on a new head but now the engine will not turn?? I'm trying to turn the bottom crank but it keeps stopping half way round and then the same the other way?? Any ideas?




G

Not to worry....... just sort of sorted it!!! almost had a heart attack!!
Has something to do with the timing now i need to find out how to correct that...lol

G

[gemini]

Is it possible to tighten the head too tight???
just put on a new head but now the engine will not turn?? I'm trying to turn the bottom crank but it keeps stopping half way round and then the same the other way?? Any ideas?




G

sounds like the pistons are hitting the valves, hope you turned by hand and not on the key

[marky]

here some pics of the timing marks

[speedymacfish]

loud

The head is on and the beast is running! BUT!! its very loud sounds as if its still knocking slightly? is there any way of ajusting the timing without removing all the fans and belts?
Oh and there is lots of smoke coming out of her now??



G

[gemini]

The head is on and the beast is running! BUT!! its very loud sounds as if its still knocking slightly? is there any way of ajusting the timing without removing all the fans and belts?
Oh and there is lots of smoke coming out of her now??



G

it is essential that the timing marks are lined up exactly and the belt is properly tensioned, use a spanner to turn engine over by hand and re-aligne the marks before fitting the timing cover

[dandownunder]

Hello Marky, would we be able to use that image of the timinig belt marks for the Techsite ?! (www.toyotasurf.asn.au/techsite) as it would be great for a write up were doing on the timing belt ?! let me know, all rights to you of course.
cheers
Dan.

[gemini]

Hello Marky, would we be able to use that image of the timinig belt marks for the Techsite ?! (www.toyotasurf.asn.au/techsite) as it would be great for a write up were doing on the timing belt ?! let me know, all rights to you of course.
cheers
Dan.

dont worry just take it , marky just pinches everyone elses pics anyway, my engine and rear cover mount pops up from time to time

[dandownunder]

Cheers , didn't want to filtch it then get into trouble
Dan.

[Koi]

dont worry just take it , marky just pinches everyone elses pics anyway, my engine and rear cover mount pops up from time to time

yeah its of a Mazda anyway

[NiftyNev]

Is it possible to tighten the head too tight???
just put on a new head but now the engine will not turn?? I'm trying to turn the bottom crank but it keeps stopping half way round and then the same the other way?? Any ideas?




G

There are different thicknesses in gaskets.The wrong gasket will not give the clearance needed or even too much if thicker than needed.I'n not certain about this but a measurement of how much the pistons sit above the block determines the gasket that should be used.The gaskets come in about 4 thicknesses.Anyone confirm this?

A tip on timing belt install -

Have the Crankshaft one tooth anticlockwise when installing belt.Once belt is on release the tensioner and turn the crankshaft slightly clockwise to allign the timing mark.Then tighten the tensioner bolt.This takes up the slack in the short length of belt between crankshaft and pump sprocket.I have done this myself and it works.If all timing marks are alligned at the start then pump sprocket is almost always one tooth out.
Always recheck timing marks by turning crankshaft at least one full turn by hand after belt is installed.

Neville

[gemini]

There are different thicknesses in gaskets.The wrong gasket will not give the clearance needed or even too much if thicker than needed.I'n not certain about this but a measurement of how much the pistons sit above the block determines the gasket that should be used.The gaskets come in about 4 thicknesses.Anyone confirm this?


this is correct, applies if the head has been skimmed