Got 514 problems!

Back in Black · #1 (**permalink**) 07-02-2006, 09:48 AM

Quote:

Originally Posted by FUNFER2

Just do a simple "leak down test". You'll be able to see if the rings are set and if there's any blow by. Then do a compression test. Also, read your plugs.
What was the fuel curve results on the dyno ?

The fuel curve results I do not yet know, but I'll ask when they reopen on Wednesday

The Dreamer · #2 (**permalink**) 07-02-2006, 11:29 AM

Blue smoke (oil leak) out of the sidepipes could be the result of a intake gasket leak. This is especially true if you were using the Fel-Pro gaskets. Speculation of my part is people using the printoseal gasket still put RTV on them and it is causing the gasket to get too compressed. The gaskets get mangled and you get an intake leak. I switched to some Victor Reinz Nitro Seal gaskets and it cleared up my oil in the sidepipe problem.

Back in Black · #3 (**permalink**) 07-02-2006, 11:34 AM

So you're thinking the rebuilder used the end gaskets and put RTV on them, or I otherwise have an intake gasket leak due to something else? That would be way better than the alternative scenarios..

Back in Black · #4 (**permalink**) 07-03-2006, 10:22 PM

Bump!

Back in Black · #5 (**permalink**) 07-05-2006, 04:23 PM

Great news, we did a complete compression test and all cylinders are virtually identical, two pumps per cylinder made 150 PSI, more pumps much higher and still identical across the board, less than 2 PSI difference!

Plugs look a bit rich but not wet at all, no oil usage.. what I thought was slight oil smoke out the sidepipes was likely mostly slightly rich running, possibly due to the PCV valve being disconnected

Shop that was doing the work seems to be the problem.. no understanding of these large bore super stroker engines. Many people have told me these engines must have a PCV valve or they will have problems (which is why I installed it in the first place)

fordracer · #6 (**permalink**) 07-05-2006, 06:54 PM

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No offense here but I see a couple of things in this picture. The breathers on the valve covers suck. You need some open element type push in breathers.

Remember, an engine is an air pump. You have a large chamber above the piston correct? You also have a very large chamber under the piston. It's called the crankcase. A piston moving up and down is going to cause pressure in the oil pan. When you removed the PCV the pressure built to a point that it had to go somewhere. Lucky for you all it did was blow the breathers off. The PCV draws in fresh air through the breather.

Look at your everyday driver. There will always be a tube goint from one valve cover to the air inlet tube or air cleaner box. This allows the PCV to draw in as much filtered air as possible.

Back to your Cobra. If the breather is restricted the PCV will start sucking oil thus causing your slight oil burning.

Ask your mechanic friend, I am an ASE Master with an L1 Advanced

Back in Black · #7 (**permalink**) 07-05-2006, 09:22 PM

No offense taken, thanks for the advice..that's a very old picture of the original junk breathers that came on the original crate. 4 year old pics

I have billet aluminum breather/PCV valve with all an fittings/SS braided lines now.. got them from JEGs

I drove it home today across town, wonderful feeling. PCV is disconnected due to the way it was programmed (with PCV way too lean and saw white spark plugs, slightly rich with PCV but driveable) All readings look good and we changed the oil and filter just to be safe

It's going to a different shop for proper tuning before I drive it any more. I have a good lead for a fuel injection specific shop already