Hugh,
I put an aftermarket PCV valve on my '72 as an experiment. After one
drive in the mountains I had oil everywhere on top of the engine. Sure
showed me where all the "gaskets" weren't. I took it back off.
I don't know what the factory original looks like or how big the hoses
are. I put on one I got at NAPA, I suspect it was originally designed for
vertical installation as opposed to the horizontal one in the TR. The
horiz. install may have kept it from working properly and caused the
"oiling" my engine got.
I did not notice any change in idle stability with the valve in or out.
I've got mine to be more stable by replacing all hoses and putting clamps
on them. The biggest single improvement was replacing the and clamping
the hoses that run from each carb to the valve cover and carbon canister.
Most of them have barbs but adding the clamp really seems to have sealed
them better.
Steve
-----Original Message-----
From: owner-6pack@autox.team.net [mailto:owner-6pack@autox.team.net]On
Behalf Of Hugh Fader
Sent: Friday, December 06, 2002 5:22 AM
To: 'R. Ashford Little II'; 'Timothy Holbrook'; 6pack@autox.team.net
Subject: RE: RE: RE: PCV on a Good's Triple intake?'s
I am trying to get back to the stock setup on my 72 TR6. It was set up
like
yours and I think without a PCV valve this may affect idle stability.
The vacuum hoses from the carbs go through orifices to the crankcase vent
and also to another orifice on the canister. The correct orifices for the
carbs are NLA, so I have modified the larger adaptors used in later years.
I'm not sure, but I'm guessing that under some conditions such as wide
open
throttle, the orifices may be sized so that crankcase gas flows into the
canister rather than the carbs. Just a guess though.
- Hugh
> -----Original Message-----
> From: owner-6pack@autox.team.net [mailto:owner-6pack@autox.team.net]On
> Behalf Of R. Ashford Little II
> Sent: Thursday, December 05, 2002 10:36 PM
> To: 'Timothy Holbrook'; 6pack@autox.team.net
> Subject: RE: RE: RE: PCV on a Good's Triple intake?'s
>
>
> I would like to hear a little more feedback on this whole carbon
> canister thing since my current setup doesn't have one. The crankcase
> is vented to one of the carbs. What are the results of this
> vs. venting
> to a canister in real terms, if any?
>
> Thx,
>
> R. Ashford Little II
> www.geocities.com/ralittle2
>
>
> -----Original Message-----
> From: owner-6pack@autox.team.net
> [mailto:owner-6pack@autox.team.net] On
> Behalf Of Timothy Holbrook
> Sent: Thursday, December 05, 2002 9:52 PM
> To: 6pack@autox.team.net
> Subject: Fwd: RE: RE: PCV on a Good's Triple intake?'s
>
> I didn't realize I was coming off as being irritated. I simply didn't
> want your email to scare off potential Goodparts customers.
> I think he
> makes a great product.
>
> Also, I don't see any issue with running a hose from the valve cover
> directly to the carbon canister. No vacuum source is
> necessary to pull
> the gases from the crankcase, they belch out of the valve cover on
> their own. I didn't want this muck sucked back into the engine, so I
> ran the hose directly to the carbon canister. The canister soaks up
> any moisture in the crankcase gases, cleans up the air a bit, and the
> excess air pressure comes out through the vent hole in the bottom of
> the canister. I think it works nicely (the EPA might
> disagree, but I'm
> not too worried about it!). Racers often use a similar setup, running
> a hose from the crankcase to a canister of some sort (often a coffee
> can full of rags!), which is sealed except for a small hole on top to
> which a small air filter is affixed. The rags (or other substance
> inside the canister, perhaps charcoal) soak up the moisture and dirt
> from the crankcase gases, the pressure comes out through the
> air filter
> up top. Crankcase is vented, no muck goes back into the engine, and
> there's no mess all over the engine bay.
>
> What's "all wrong" about my system? If I'm messing something up, I'd
> like to correct it.
>
> Tim Holbrook
> 1971 TR6
>
>
> --- Jim Swarthout <jswarth1@tampabay.rr.com> wrote:
> > From: "Jim Swarthout" <jswarth1@tampabay.rr.com>
> > To: <6pack@autox.team.net>
> > Subject: RE: RE: PCV on a Good's Triple intake?'s
> > Date: Thu, 5 Dec 2002 18:44:35 -0500
> >
> > Tim,
> >
> > Calm....Calm...Take a deep breath!
> >
> > I never suggested that Richard Good does not make superior products.
> > I
> > have no idea who Richard Good is!!! I've never met him! I'm certain
> > that
> > he has engineered his products to be beneficial to the TR
> > enthusiast...otherwise he would not be in business!!!
> >
> > That's why I suggested that the manufacturer be contacted first
> > regarding any installation issues!
> >
> > Don't attach the engine breather tube to the charcoal canister!!!
> >
> > This is all wrong...
> >
> > Jim
> >
> > -----Original Message-----
> >
> > When fitting a Goodparts triple manifold (as I have done),
> you simply
> > need one more T fitting and a bit of extra hose. The
> > 1969-model-year-only "PCV" valve (which is not really a PCV
> valve) is
> > not used. Run hose from the valve cover to the first T piece. From
> > this T piece, connect a hose to the rear carb breather fitting, and
> > another hose going to another T piece. From this T piece,
> run a hose
> > to the middle carb breather fitting, and another hose going to
> > another
> > T piece. From this final T piece, run a hose to the front carb
> > breather fitting, and a hose to the carbon canister. And you're
> > done.
> >
> > The "PCV" valve (which was only fitting on 1969 cars) simply applies
> > a
> > vacuum to the crankcase ventilation circuit, since 1969 cars did not
> > connect the crankcase tubes to the carb breather fittings. On cars
> > after 1969, there is no PCV valve at all, the crankcase vent is
> > simply
> > connected to a breather fitting on each carb, which
> provides vacuum.
> >
> > However, it's a lot cleaner just to run a hose from the valve cover
> > to
> > the carbon canister (which is what I have done). This keeps your
> > carbs
> > cleaner, and still allows the crankcase to vent. After all, why
> > would
> > you want your engine breathing in all that dirty crankcase air!
> >
> > By the way Jim, Richard Good's triple manifold fits perfectly, and
> > comes with everything the installer needs. It's an excellent
> > product.
> >
> > Tim Holbrook
> > 1971 TR6
>
>
> __________________________________________________
> Do you Yahoo!?
> Yahoo! Mail Plus - Powerful. Affordable. Sign up now.
> http://mailplus.yahoo.com
[demime 0.99d.1 removed an attachment of type application/x-pkcs7-signature
which had a name of smime.p7s]
|