Bianca Engine Work

[revmax]

Yes, disturbing the bottom end is creating unessary work and risk.
a simple valve leak test.
http://www.youtube.com/results?search_q ... -4.3.1l8l0

I am still confused as how you blokes think cutting a piece of foam is so difficult. Cause if you were to hone the cyls then cutting the foam is the only exta thing that would be necessary when done as I have described above.
Steptoe you went of on a tanget as I never mentioned anything about honing only above the rings.

[Brumby Kid]

Cool, will do that in a minute.
Thanks Revmax!!!
Hoping i find leaky valves (touch wood)
If not i hope it was the gasket failure.

Cheers Cam

[revmax]

if there wasen't any blowby before the gasket failure then it is VERY likley the be compression leaking into the case when the gasket failed.
How many K's has it done.
Edit the gaket and cyl photos show a compression leak.
The amount of carbon on the pistons makes me think the oil rings are worn, is there much carbon build up in the exhaust ports and was it using much oil.

[Brumby Kid]

if there wasen't any blowby before the gasket failure then it is VERY likley the be compression leaking into the case when the gasket failed.
How many K's has it done.
Edit the gaket and cyl photos show a compression leak.
The amount of carbon on the pistons makes me think the oil rings are worn, is there much carbon build up in the exhaust ports and was it using much oil.

Not sure
295,000km
Yes
Not sure, i stopped using it soon after the gasket failure, when water was filling up the sump.

[Brumby Kid]

Tested the valves as said with brake fluid.
Perfect!!!
But there is a lot of carbon everywhere (Pistons, valves, spark plugs etc)

Cheers Cam

[El_Freddo]

Engine Blow By/Back. Is this where you can feel air coming out of the air cox instead of sucking?
What can you do? Coz iz I have to split the block for that im gonna be pissed.

No. Blow by is when you can feel positive air pressure coming out from the oil filler when you remove the cap. It can also be blue in colour as it burns a little bit of the crank case oil.

Excessive, oil rings will be shot shortly after this and you'll see that as blue smoke out the back of the car when you start it/drive/use the engine at any time...

Yeah ok,
How would you get the pistons out?
Splitting the block sounds easier.
What are the cons of doing so? Im looking at Sam in particular.
Now is there a way to test for the piston rings, as i know it could also have been the head gasket, or an impropely seated valve, or valve seal thingy.
Thoughts Please.

Hex keyholes on the side of the block beside each cylinder, I think Sam's gone into this. Splitting the block is done to change the cam (for a better one, your cam shouldn't be worn out yet), replace main bearings and big end bearings.

A full engine rebuild like this will give you the best stock compression you can get without starting on other mods you'd go for if building a real performance engine. The cam is a big part of this.

If you follow the instructions, have everything measured as instructed and the appropriately sized parts used in the rebuild. Double check tensions are as they should be and that things are clean when you do the rebuild. The other important thing is to make sure you place the bearings in the correct way around if you go the full rebuild.

Is there anyway to test to see if there is anything wrong?
So i don't end up like Sam?

Cam, that's a bit harsh. It was Sam's first build and he needed it done. He may have missed one big end bearing not being seated properly or was in the wrong way around - we'll never know. But it was a gutsy move and I hope that he has another go at it soon, just slower and more thorough/attention to detail used.

Apart from gasket issue.
I do have some blow back.
Possible causes...
Head gasket
Valve issue
piston rings
How can i tell which it might be without putting it back together and taking it apart again?
I would like to fix that to get better compression and performance.

Blow by can't result from a head gasket - that's a leaking head gasket and is different to blow by. Blow by is the compression rings no longer holding the burning fuel mixture in the cylinder, the way to find this is by a compression test before you pull it a part or to inspect the bore once you've got the heads off and read up on a guide as to what the bore is telling you. Note: Subaru engines are good at still showing the hone markings at +300K but they're no good anymore for bedding in the rings as this would have occurred ages ago.

Yes, disturbing the bottom end is creating unessary work and risk.

Dunno about the "unnecessary work and risk" bit. If you're going for mild performance an engine rebuild is the best way to get the most from your engine. Personally if I was going to hold on to this engine for some time I'd be going the whole hog with a mild cam dropped inplace of the stock unit for a bit more pep while driving.

Steptoe you went of on a tanget as I never mentioned anything about honing only above the rings.

Steptoe was sharing a story of how not to do it. 1) honing is good for new rings to bed in, I wouldn't be pulling the pistons out if you weren't going to hone the bore and throw in new rings. But then again I wouldn't putting an engine back together without having the bore checked out for roundness and straightness (for the want of a better term).
2) You don't ever hone the bore with the piston still installed. Not only can you not hone the whole bore stroke you also can't clean out all the debris created by honing the bore.

ALWAYS wash the block after having honing work/re-bore work done, you'll be surprised how much debris comes out in the wash!

if there wasen't any blowby before the gasket failure then it is VERY likley the be compression leaking into the case when the gasket failed.
How many K's has it done.
Edit the gaket and cyl photos show a compression leak.
The amount of carbon on the pistons makes me think the oil rings are worn, is there much carbon build up in the exhaust ports and was it using much oil.

Yeah this is always a hard one to say. The engine could have been running rich... or this could be normal carbon build up for a petrol drinking engine with almost 300k km on the clock:



It's hard to tell by photos and without seeing the engine run before it was torn down.

It's always a complex equation as to what you do - if you were just pulling it down due to a leaking head gasket and that's all you want then just do that work.

If you're after some solid reliable performance a complete rebuild will look after you so long as you do it carefully with attention to detail. Find a good build guide and follow that - and ask questions as you go

Cheers

Bennie

[Brumby Kid]

No. Blow by is when you can feel positive air pressure coming out from the oil filler when you remove the cap. It can also be blue in colour as it burns a little bit of the crank case oil.

Cam, that's a bit harsh. It was Sam's first build and he needed it done. It's always a complex equation as to what you do - if you were just pulling it down due to a leaking head gasket and that's all you want then just do that work.

If you're after some solid reliable performance a complete rebuild will look after you so long as you do it carefully with attention to detail. Find a good build guide and follow that - and ask questions as you go

Cheers

Bennie

Ok So, it's air coming out of the air cleaner backwards. I was told it was blow back/by.

Sorry, Wasn't meaning it to come out like that, it was just easy to say so people knew what i ment. I take my hat off to Sam for doing what you did, but sorry Sam I really don't want my engine to fail.

Yes just a head gasket, but while the engine is out....

Yes I am after some solid reliable performance.

Where might I find a good build guide Bennie, never really knew it was written.

Cheers Cam

[Silverbullet]

Cam, that's a bit harsh. It was Sam's first build and he needed it done. He may have missed one big end bearing not being seated properly or was in the wrong way around - we'll never know. But it was a gutsy move and I hope that he has another go at it soon, just slower and more thorough/attention to detail used.

Don't think he meant it to be harsh there Bennie I won't mind if he doesn't rebuild the whole thing himself based on what happened to me if it means he doesn't end up with a busted motor like I did.

That picture of the engine with the piston tops exposed, does that residue look oily to anyone else? Mine were straight carbon from running with the choke out constantly and the residue was black powder. Unless Cam got coolant on his pistons which made it slimy.

[Brumby Kid]

Well, yes i think there could have been coolant, but it is more likely to be WD40.
Daniel said spray WD40 in the bores daily to stop them rusting.

[mud_king91]

even weekly is fine they were oily as i rubbed before anything else went into the bores the exhaust prts were a tad oily as well and i have lots of foam.... found it in the bin at work along with 4M of double core wiring and a heap of mesh

[El_Freddo]

Yes just a head gasket, but while the engine is out....

Yes I am after some solid reliable performance.

Sounds like you need to make a big decision - the easy one is to fix the head gaskets and leave it at that...

Daniel said spray WD40 in the bores daily to stop them rusting.

I'd say spraying it thoroughly once would have done the job - the WD40 stays on the surface unless it's washed off.

Cheers

Bennie

[Brumby Kid]

Ok so it's been a loooooooooooooong time since a proper update.
Some of you super detectives may be able to have worked out whats happening.

So Head Gasket went, took it out, found rings needed doing.
So after contemplating what to do we sent it to an engine doctor.
Knight Engines (Tony Knight) Defianatly reccomending!!!!!
And the radiator got done somewhere.

So heads are having the full Monty.
Even port matching and some other stuff.

My Bores where sort of elliptical, so a good hone and oversized pistons.
Crank linish, Cam grind, with this he has sent it interstate, (think it got there today). They will collaborate and work out the best profile.
And the compression is going to be bumped up to 10:1.

Think thats about it for now, oh and looking for 2nd hand webers on fleabay.
This thread is useless without pics so some random pics for your enjoyment. (please control yourselves) Unfortunately there all old. New ones soon!!!






This was easy to remove without braking.



Complicated much.


Piece of crap! Looks sexy now


Daniels Arms.




Cheers Cam

[El_Freddo]

If you go the webers, what are you doing with the old carb? I'm after one of those, I'm starting to think the EA82 intake/carb is too much at the moment.

Let me know a price if you're not going to be using it!

And the whole thing sounds good mate! I bet you can't wait to get it back together!

Cheers

Bennie

[Brumby Kid]

Ok, will do, (you have a weber atm?)
Can't wait!!!
Going to vietnam in mid june for school.
May be able to get it in before then.

[AshR]

that looks like a major overhall good luck with it.

while the other parts are off the block you can get the toothbrush out and clean it all up

[Brumby Kid]

Thanks,
Yeah hes cleaning everything for me, i dont have much in my shed atm.
costs a lot for all this but worth it.
Ive painted the sump and rockers and some other stuff already.

[d_generate]

So did your mum let you lick the cake tins clean? Look bloody tasty.

[Brumby Kid]

So did your mum let you lick the cake tins clean? Look bloody tasty.

My rockers? Yeah it's an awesome mixture of oil and water!

[Silverbullet]

I remember seeing that scene in my shed, almost exactly the same Lots of fun pulling an engine down I think.

Bennie if Cam holds on to his Carb I've got one spare in the shed, well 3 actually but 2 of them are reserved I pulled the spare one off a Sedan at wreckers yard because it looked really clean and in case I needed it. Never needed it so I haven't tested it though.

[El_Freddo]

Ok, will do, (you have a weber atm?)

Stock carb with a shot auto choke on it - the previous owner had pop riveted the choke cover back on it, this came loose and wore a grove in it so that it no longer goes back together properly, and I can't get it operating at all. It's a PITA to start on a cold morning!

while the other parts are off the block you can get the toothbrush out and clean it all up

Or have it chemi washed - comes up like a new engine and is a great time to paint it - painting an engine makes it a pot load easier to keep it clean if you do it properly the first time around.

Bennie if Cam holds on to his Carb I've got one spare in the shed, well 3 actually but 2 of them are reserved

If it's got the auto choke and Cam does hold on to his carb, I'll be keen on this.

Cheers

Bennie