[Shotimes] Oil blow-by?

[Paul Nimz]

All engines have blowby, what you are experiencing is more blowby than the
PCV system can handle, therefore you have pressure on your crankcase which
will force the blowby out and condense on the motor where it comes out.

This excessive blowby is mainly caused by carbon between the rings and the
pistons.  Auto-RX or new rings are the cures.

Paul Nimz
'97 TR
'93 EG mtx


----- Original Message ----- 
From: "Mark Mucher" <mmucher@bellsouth.net>
To: <shotimes@autox.team.net>
Sent: Thursday, June 17, 2004 8:16 AM
Subject: RE: [Shotimes] Oil blow-by?


> Me too!
>
> Also, I don't know that I have blow-by - I'm just trying to explain the
oily
> spots on the motor.
>
> (No smoke on hard acceleration, BTW.)
>
> Thanks,
>
> Mark
>
> P.S. Paul - I got some Auto-RX but haven't put it in yet, 'cuz it's
full...
>
>
> -----Original Message-----
> From: shotimes-admin@autox.team.net [mailto:shotimes-admin@autox.team.net]
> On Behalf Of Carl Prochilo
> Sent: Thursday, June 17, 2004 9:09 AM
> To: Paul Nimz
> Cc: shotimes@autox.team.net
> Subject: Re: [Shotimes] Oil blow-by?
>
> I guess I'm in the camp that doesn't understand this.  Would you please
> elaborate why you do this?
> --
> Cheers,
> Carl Prochilo
> 92 Ultra Red Crimson
>
> On Thu, June 17, 2004 1:33 am, Paul Nimz said:
> > I plug my PCV input hoses.......
> >
> > Paul Nimz
> > '97 TR
> > '93 EG mtx
> >
> >
> > ----- Original Message -----
> > From: "Leigh Smith" <leighsm@comcast.net>
> > To: "Mark Mucher" <mmucher@bellsouth.net>; "'Shotimes@Autox. Team. Net'"
> > <shotimes@autox.team.net>
> > Sent: Wednesday, June 16, 2004 5:59 PM
> > Subject: Re: [Shotimes] Oil blow-by?
> >
> >
> >> I'd certainly check all the things everyone mentioned, but it is also
> >> possible the rings are just getting tired by now. You didn't mention
> >> mileage, but I'll assume it's 100k or more by now.
> >> Old solid lifter "musclecar" engines had a serious problem with
> >> blow-by, even when brand new and properly blue-printed, because the
> >> pistons were forged and installed so "loose". They would literally
> >> puff smoke from the valve cover fill cap if you opened it and
> >> disconnected the PCV. The SHO is built MUCH tighter, but with those
> >> miles your rings are still well worn.
> > To
> >> check, pull the PCV hose, and vent hose, and open the oil fill cap,
> >> and
> > see
> >> how much smoke or puffing you get. None would be ideal. Put the PCV
> >> hose back on. Make sure the hose itself pulls a vacuum. Then hold
> >> your hand
> > over
> >> the cap opening and check to see if the system can pull a vacuum thru
> >> the crankcase while the engine is running.
> >> Blue smoke that only appears at full throttle means the same thing.
> >> A more sophisticated test would include a leak-down tester.
> >> Race cars run vacuum hoses from the header collectors to get big
> >> vacuum readings inside the crankcase, even at full throttle.
> >> I remeber tests where that alone was worth 20HP.
> >> Lee
> >> ----- Original Message -----
> >> From: "Mark Mucher" <mmucher@bellsouth.net>
> >> To: "'Shotimes@Autox. Team. Net'" <shotimes@autox.team.net>
> >> Sent: Wednesday, June 16, 2004 8:58 AM
> >> Subject: [Shotimes] Oil blow-by?
> >>
> >>
> >> > I posted this on TechSHO but didn't get any bites...
> >> >
> >> >
> >> > My "new" '90 has some damp oil spots on the top of the engine
> >> >
> >> > One area is to the left of the filler cap and another is towards
> >> > the
> > front
> >> > of the throttle body on the intake joint.
> >> >
> >> > It kinda looks like the crankcase is not venting properly.
> >> >
> >> > Any ideas?
> >> >
> >> > (pix available)
> >> >
> >> > Thanks,
> >> >
> >> > Mark
>
> ---
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