Total mystery : sheared off cambelt but valves ok!?

[PapaSmurf2k3]

And if you can, it probably won't be any cheaper than just getting a used complete head.

[Grifter]

Ok guys thanks for that what I've now done is cleaned up the journal & bearing good enough to go back on (I think) cause there ain't any machine shops that'll go for the job of sorting the head, plus It'll cost more if not the same as a used head as papasmurf said, my cams were slightly scored too!! But have good cams to use from the other cylinder hwad I've got, so am I right in thinking that il be ok in using the spare cams I've got? Otherwise it'll have to be the scoured cams. But I've also now bought a used head which needs some tlc cause it's been sat in a unit for about 6 mths ! Il have to clean up the rust etc which'll take more time & waiting
I'm planning on putting on this head & hopefully get it running again the least whilst I carefully clean up the other head ( calmly & properly) then install the new head maybe in the summers.
*#MERRY XMAS*#

[float_6969]

I would use the messed up cams. This is a temporary situation.

[Grifter]

I think your right float thanks il do that & load some more pics in once I've put it back together.

[PapaSmurf2k3]

Use the messed up cams, throw your spare head in the trash, and get a whole new head and/or engine set.

[Grifter]

Spot on papasmurf. yeah that's what I thought the spare head I had is unfortunately no good but I've got a used head in its way in transit which I may get next week or even later so il try and get the motor all started by them with this current head for the meantime

[Grifter]

II've just checked the hg I used & it looks ingood shape. Could I use this hg cause I didn't start up the car only torqued it down unless I get another hg

[float_6969]

Head gaskets can't be reused.

[Grifter]

Ahh damn, ok il just have to source another one. I've managed to drill the oil hole back on the journal & soon as the weathers improved il work on the head

[Grifter]

Hi all, good news is I've got my s13 started
It was revving all nice BUT there was a loud ringing noise which I thought wild be coming from the ps or alternator belts but they were all nice and tight
Then the ringing noise wet away & together the car went off
I started it again & it started with the ringing sound & again went off with like a "drill getting jammed noise"
I tried firing it again but it was the same grinding noise coming from below the intake side.
I'm bewildered
Can't tell what that is cause when it started it was all good drove it front and back but now I don't want risk starting it again cause I hear this loud grinding noise soon as I turn the key, ahh man. I was really but really stuck now cause the ringin noise & the hammer drill Is kind of worrying

[Grifter]

Ok I've been.under the.hood again & figured out thr ringing / squeal noise was thr turbo I put in the one which had a bit of play,
It started and ran ok although a bit Smokey & the squeal
Bit it's now not starting BUT instead just rumbles like a hammer drill
Ive tried to rotate the crank but it's kinda stuck solid.
Thought it was in gear first but it wasn't it really is very stuck & cant turn it

Can the flywheel at all get jammed up with the crank holding it in place

[float_6969]

Are you sure the timing belt didn't jump? Maybe the starter is stuck out?

[Grifter]

I checked the timing belt & it's still ok in place nice and Tight timing I think is ok.

Don't know about the starter that is the area where the loud clicking sound is coming from soon as I turn the key now, but the engine don't turn I've tried to turn it by hand but no luck

[Grifter]

Ive just tried turning the cam by hand and it is only going about 1cm back and front

[Grifter]

Ok ive taken out the plugs & turned it over quite hard but it turned & gave it a full revolution, but it kept in gettin stuck after I had to exert more force to get it past the sticky point. I put back the plugs and it kept cranking over with no start
Didn't get stuck again
For some reason it gets stick when turning by hand but don't get stick on starter motor
I think you maybe right float although the timing belts still ok I think some how it's skipped timing & it maybe hitting valves im nit hearing any "knocks" when it cranks but I think thats what's happening.

[PapaSmurf2k3]

Yikes dude.
Time to do a compression check, or whip the valve cover off and see if everything is still lined up like it is supposed to be.

[Grifter]

Yep il be doing that soon as I may have skipped timing but il post up some pics

[Grifter]

Ok I've taken.off.thr cam covers to find out the crankshaft mark is 12 o clock intake cam at 8oclock & the ex cam at at 6
I've got a strong feeling I may have bent some valves thr loud whining noise I believe wouldve been either thr tensioner or ididler:tisk:

[Grifter]

[Grifter]

[Grifter]

[Grifter]

These are the pics of the belt when it was in as seen the timing marks have gone AWOL I've now taken it off & it don't look damaged in any way?!?
I've taken off the tensioner and idler to check any signs of play bit nothing both look feel ok
When taking off the belt it still had good tension hadn't loosened or anything but the timing marks had mixed up what a mystery
Could this have happened with the two pullys idler or tensioner as can't seem to see any other cause
Most likely I've hit some valves taking off the cams today to enable a compression reading then worst case il be slapping on the new head,

[Grifter]

Bit disappointed really took off the cams today and to my horror, one of thr cam journals has totally skimmed off il post a pic
How can that happen I mean could that have caused the the cam to slip jam or seize up with slipping time,
Il defo be taking the head back off to install another better head

[float_6969]

Yea, you've got something WAY off there and the valves are definitely toast. Sorry man.

[Grifter]

Yh I think your right float could the valves av damaged the piston or bottom end as it was only doing about 800 revs the engine still rotates ok now after removing the cams

[float_6969]

Anything is possible, but I think it's unlikely.

[Grifter]

Ok I've taken off the head & surprise surprise NO BENT VALVES this is becoming a weird mystery
The engine was gettin stuck as it slipped timing but no apparant bent valves im.thinkin could the valves have bent slightly which enables the valves to go back in
Or can the crank shaft itself slip,?
Im putting in this newer head I bought anyhows nit risking it again with the old one

[float_6969]

The valves can be bent and not look like it, but they won't actually seal when closed.

[float_6969]

Have you tried turning the engine with the head off? Does it spin freely, or does it still stick?

[Grifter]

I guess your right float they.maybe bent but can't be visually seen
I've spun the engine over by hand with the head off & it spins without a glitch
No marks on pistons either
But one of the head journals has like rubbed off onto intake camshaft & wrecked it
One of the intake side cam journals had it
Could that have caused it to slow down & slip timing cause the belt was still nice ,& tight.but I could hear a faint knock when the car had started briefly before going off again. But that would've been cause I started it after months right,
I've got another head which I'm going to put on asap with new idler n tensioner hopefully get it going soon enough