2003 SVT motor Blowin' smoke in Hard left hand corner - Help

[951n914]

Hi friends

Not on here much ..as not much to Contribute as not mechanically astute

 

As a few fellow 7 'rs saw and were mystified by ...

At Last 7 get together at NJMP ...had me being Black Flagged ..as car blew smoke coming out of Turn 7 ( Hard braking on slight decline with har Left turn / acceleration headed up to Bowl ..headed towards the Bowl ......

No obvious exterior leaking around Motor .. and Full backside of car covered in Oil Spray at end of event

Cannot Duplicate on Street

 

Maybe bad valve guide(s) ..allowing oil to be sucked past and burnt ... Or Oil Pan issue { been replaced ( sadly ) } in past and same mechanic says appeared properly baffled .....

OR ??

Just looking for some direction PLEASE ...as figured we would start w/ pulling head off

 

Happy Holidays

Hoping to see some of ya' at LOG ..and then back up at NJMP in 2017

 

Scott

2003 Superlight R SVT

[Davemk1]

Windage tray not in place?

 

dave

[Ferdl]

Crankcase breather (on right side of block) sucking oil ?

 

ferdl

[Croc]

Hi Scott - Hope you are doing well?

 

A piece of additional data possibly relevant for others here - you have a rear exhaust exit from memory? So the oil was passing through the exhaust for oily residue on the rear of the car.

 

I know if you modestly overfill a standard non-SVT zetec with oil it will blow smoke on one long right hand corner at NJMP (e.g. the banked bowl the ) under throttle similar to what you were experiencing. If the oil level is spot on at midpoint with my maroon car it does not blow smoke but it will if the oil is at the top of the dip stick marking range. So I suspect your oil level is a factor in this discussion. When that happens my oily residue is just aft of the side exhaust exit.

 

For me the smoke/residue is a byproduct of oil in the combustion process and yours looked identical (no engine leaks, no oil pressure concerns). What I never did understand that day is why my maroon car (non-SVT zetec) was having right hand smoking moments and yours (SVT zetec) was having left hand smoking issues?

 

So with that additional information I turn it back to the other members here to help group-think the problem

 

Cheers

mike

[slomove]

How is the crankcase vent plumbed? Does it go back into the intake like many cars have or does it go into a catch can. In the first case I would agree with previous opinions, in the latter case it may have a more ominous meaning.

 

In any case, high revs tend to foam/atomize the oil in the crank case and lateral acceleration in right hand turns will slosh the oil against the breather opening (after all, the engine was designed to be mounted perpendicular to a Seven installation). Then it needs only a little piston blow-by to force the oil into the breather tube.

[1turbofocus]

Have you removed/replaced the stock black metal PCV canister that bolts to the side of the block behind the header ?

 

Tom

[951n914]

Appreciate the INPUT VERY Much !!

will take ALL into consideration ...and get back over to storage unit to check

 

Sincerely

Scott

 

HAPPY HOLIDAYS ....TO everyone !

[d15b7]

hi! oil control concerns in a Seven on track are a BIG DEAL; even with a race baffled pan and a big Accusump I can barely keep oil pressure in my xflow powered Super Seven. honestly going to dry sump is the only for-sure method of proper control (and quite expensive; that's why i've not done it either!).

 

first thing for you to do is install a proper 'race' style breather system; I use a big Peterson catch can with filtered vent on top, mounted to the firewall. routing of the hose(s) is important; I have a fitting in my lower block which routs to the back of the valve cover. then another fitting in the front of the valve cover attaches to another hose and loops up til it touches the bonnet, and then is run all the way back along the frame rail to the big Peterson catch can on the firewall. I have it mounted so that I can easily reach under it and drain it into a small pan with no tools (it's a thumbscrew). oil level in the engine is critical in my xflow to have it just so; just a touch under the Full mark is just right; any more than that and it blows right into the catch tank within 15 mins. much under Full mark and the engine will starve for oil (the accusump will have to take over to supply at least SOME oil pressure when this happens). when the oil level is just below Full on the stick (it's happy place) I get the best combination of good oil pressure and not to bad blowby into the catch can.

 

after you install this type system, be sure to plug up any of the factory breather hoses going into the intake manifold; you don't want any vacuum leaks or any way for oil to get into the intake.

 

oh, and part of your 'looking the car over after each run group' should be to drain the catch can and see what's in there. typically I get a few ounces after every run group. more or less depending on the track (certain tracks are better or worse for oil starve/slosh than others).

 

good luck! and I'd def try the proper breather system before I tore into the head or any other internal engine mods!