Something bad happened.. stalled engine.. won't even turn over.. full charged.. bang noise try start

[ifixedit]

Hey all

R34 GTT...

Drove to Vic market this morning..

Driving home.. on deceleration toward traffic lights.. going neutral and engine stalls..

Try turn over click click.. click click..

Interesting..

 I have seen very flat battery and bad alternators stall cars...

Anyways brother comes to try and charge me.. try turn over.. still click click..

Smack starter a little and get it to turn over..

Serious metal on metal... Noise.. 

No oil loss, checked for wet oil in top end by fingering my engine... It has lube for sure..

I dunno.. maybe a rod and snapped or the timing belt...

 

Can anyone try help me to diagnose the noise? I cannot tell yet without opening anything

[Ben C34]

I doubt an internet diagnosis is going to work in this case, sounds f**ked.

 

 

 

And lol  at "fingered engine"

[GTSBoy]

$5 on broken crankshaft.

$10 on broken camshaft, exhaust side.

$15 on broken CAS drive.

[Milkmun]

My car also died in the city today, Flinders st. Tried to jump it, nothing. Fuel pump was priming, so I thought may be the AFM, unplugged it and it started. Limped it home and starting tearing it apart, tried a working AFM - nothing, front bumper off and checked all intercooler pipes - nothing, fuel rail hose off and turned car into on position - plenty of fuel comes out, pulled plugs - fouled and wet.

Not sure what else, will change plugs tomorrow and hope for the best. Will also check all grounding points.

Can I assume that it’s getting fuel since plugs were wet to rule out injectors and pump? 

Anything else I should try? 

[ifixedit]

44 minutes ago, GTSBoy said:

$5 on broken crankshaft.

$10 on broken camshaft, exhaust side.

$15 on broken CAS drive.

CAS drive

 

Curious what ya mean

[GTSBoy]

1 minute ago, ifixedit said:

CAS drive

 

Curious what ya mean

CAS is driven off the front end of the exhaust camshaft.  Can break.  When it does break, shit stops happening.  Or shit starts happening, depending on your point of view.  Bad noises, for example.

[ifixedit]

Nice.. gonna borrow friends engine hoist and stand and take a good look..

 

Might take off front cover first.. look at the timing belt..

 

 

Question... Is it possible to remove engine from engine bay without the a.c. compressor??

 

Don't wanna f**k with the AC.. it works so well

[Milkmun]

40 minutes ago, ifixedit said:

Nice.. gonna borrow friends engine hoist and stand and take a good look..

 

Might take off front cover first.. look at the timing belt..

 

 

Question... Is it possible to remove engine from engine bay without the a.c. compressor??

 

Don't wanna f**k with the AC.. it works so well

Want to give me a hand as well Hahahaha 

Hope you find out the problem.

[NEO25T]

1 hour ago, ifixedit said:

 

 

 

Question... Is it possible to remove engine from engine bay without the a.c. compressor??

 

Don't wanna f**k with the AC.. it works so well

Yep just unbolt it as well as the power steer pump and put a strap around them to hold to the side out of the way

Edited February 23, 2019 by NEO25T
Spelling

[ifixedit]

Thanks NEO

 

Sadly I actually partially owned a garage in Thailand modding RBs and actually watch a fair bit.. never did a rebuild but will just have a play.. cannot make it worse than it is haha

 

Maybe I can haha..

I might get the complex stuff like headwork if needed to someone

 

So anyone is West Melbourne good at working heads

And if need honing done any good places reasonable price?

[Milkmun]

13 hours ago, ifixedit said:

Thanks NEO

 

Sadly I actually partially owned a garage in Thailand modding RBs and actually watch a fair bit.. never did a rebuild but will just have a play.. cannot make it worse than it is haha

 

Maybe I can haha..

I might get the complex stuff like headwork if needed to someone

 

So anyone is West Melbourne good at working heads

And if need honing done any good places reasonable price?

Any luck today man? 

[ifixedit]

Nursing a hang over.. will do some tomorrow hehehe let you know what's happening..

[ifixedit]

Okay things don't look so sweet.. on first impressions..

Looks like the stalled engine on approach to traffic lights was basically the CAS saying wooooooo something's up!

Looks like the idler pulley for cambelt loose and the bad noise might have been that moving around inside..

Bad bad bad the fact camshafts are not in sync..

Bad bad bad that I tried to keep turning the engine over via starter..

Can anyone weigh in with respect to a starter motor having enough power to bend valves?

I remember even on the half turn the engine was not firing to have a combustion cycle.. so interesting to see if the starter motor would just slightly gouge the pistons..

Time will tell when I go deeper..

Images here in Imgur gallery

https://imgur.com/a/yNRWr3V

 

Last thing..... Question...

Photo where the balancer pulley is.. since the engine is freely rotating half  to 3 quarters of a cycle... Is the 10mm screw being held by a ratchet bar a typical way to keep the engine crank still while ratcheting off the bolt?

I have ensured there is at least another 30-45 degrees of rotation left from where it's being held..

Or am I suppose to use a longer 10mm bolt and screw it in all the way and let it catch on the engine??

I forgot how the boys use to do this..

I kind of remember using my method haha

[r32-25t]

Did you change the timing belt recently?

[ifixedit]

About a 2 years ago

Have done maybe 15k since

[iruvyouskyrine]

Unfortunately that engine is toast by the pics provided. yes the starter is geared low enough to be able to bend valves pretty easily.

How far out of phase are the cams? Can you post a front on picture please.

Continuing to try and start it has definitely done more harm than good.

[GTSBoy]

Time to dismantle it.

[ifixedit]

5 hours ago, iruvyouskyrine said:

Unfortunately that engine is toast by the pics provided. yes the starter is geared low enough to be able to bend valves pretty easily.

How far out of phase are the cams? Can you post a front on picture please.

Continuing to try and start it has definitely done more harm than good.

  based on the little dot on cam gear and marker.. 

The intake and exhaust would be no more then few teeth out of allignment.. 3-5 teeth out maybe.. and that might be since I released the belt.. and seen it slip. 

The main concern in the crank position in relation to the cams.. considering the idler pulley that's no longer mounted would have allowed the crank and cams to misalignment..

 

I'm going to hazard a guess best chances are... The loose timing belt pulley was jamming the whole thing from turning.. I forced it by forcing the starter motor and heard a terrible grind and stopped instantly.

The grind might have been the pulley.

I'll slowly take her apart..

 

[Slap]

As far as im able to tell.....Those timing cam gears are completely misaligned if you have that at tdc cyl. The dots on the teeth of the gears should align to the whitelines on the back cover as they indicate where the markers are approximately.

[Slap]

Tdc cyl 1*

 

 

Do a search in the forrums I'm sure I learnt that here