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My Monster LIVES!!
https://www.slantsix.org/forum/viewtopic.php?t=52071		 Page 1 of 1
Author:  Dave [ Tue May 14, 2013 7:22 pm ]
Post subject:  My Monster LIVES!!
After nine years of rebuilding, on and off, my engine finally ran for the first time Saturday night. A big thank you to all of you who helped me with various problems along the way. Pictures are here:
https://www.facebook.com/media/set/?set ... ad8c824dac

some relevant specs:

Clifford hydraulic cam
head ported, polished, and shaved .100"
Oversized stainless valves, new seats, and heavy-duty valve springs.
about 20 lbs of Lean Burn wires, hoses, and other crap deleted.
Offenhauser intake manifold
Aussie custom shorty headers, high-temp powder coated
Holley list 6299 4bbl carb, heavily modified.
Holley black electric fuel pump
Heavy-duty water pump and 7-blade fan
Custom dual exhaust with crossover and Cherry Bombs.

It starts and runs like a champ. Thanks again, everybody.
Author:  64DartGT [ Tue May 14, 2013 8:48 pm ]
Post subject: 
Looks sweet!!!!!
Author:  Dart270 [ Wed May 15, 2013 10:47 am ]
Post subject: 
Congrats! Enjoy the Slanted ride.

Lou
Author:  kxracer728 [ Wed May 15, 2013 4:54 pm ]
Post subject: 
Looks like you've done it RIGHT!

What do you have plugged in the pcv grommet? And where did you get it? I would like to do that with my truck since i'm emissions exempt...
Author:  DusterIdiot [ Wed May 15, 2013 5:15 pm ]
Post subject:  Yes, but...
Quote:
What do you have plugged in the pcv grommet? And where did you get it? I would like to do that with my truck since i'm emissions exempt...
Lookin' like a breather like it's big brother at the end of the valve...the only issue with these is: if you get bypass past the rings (improper seating, or just plain worn out), oil getting whipped by the windage in the crankcase...instead of it being drawn into the PCV and being burned up on the combustion chamber side it plugs the breathers, then when you do get positive pressure in the crank case, it creates an oily mess out your sealing surfaces...(just like you see on those oil caked 50,000 mile motors...)...

The reason for it on his vehicle is the Holley 0-6299 is a 390 cfm 4 barrel meant for use on Ford Pinto Hipo applications...it has no 3/8" nipple for the PCV application...Ford uses a different setup with a plate with this nipple sandwiched between the carb and the manifold...you can order a plate for the manifold, but it raises the carb up about 5/8-3/4" and in cars this limits the use of a full size air filter.... Holley discontinued these carbs in the 80's as the 4 cylinder racing kind of took a downturn, turning toward the 0-8007 vaccuum secondary for an "all around smaller 4 barrel and the 390 cfm double pumper for track only applications...Hopefully it has back fire protection installed as Pre-1992 Holleys did not come with the backfire valve and a pop is enough to rupture the power valve and cause some very nice 100% fuel enrichment afterwards...


-D.Idiot
Author:  Dave [ Wed May 15, 2013 7:48 pm ]
Post subject:  Point taken
The plug in the PVC grommet is a ..., well, er, ummm... a plug I pulled out of the end of a lawn chair arm. I had ransacked the shop looking for something improvised because, as D. Idiot rightly points out, there is no longer any pathway from valve cover to intake. This piece just happened to be the right size and fit snugly in the hole. It appears to be delrin and should last forever.
The crankcase breather at the tail end of the valve cover is equipped with a foam filter, and it appears to work well in the limited time I have run the engine. Clearly, I will have to keep an eye on it, but it will clean up easily. I have seen the carb plate with the 3/8" nipple, but again, I am not sure I need it. The rings, valves, and seats are all new so I'm hoping that the limited use that this truck will see will not cause enough blowby to be a problem. If it becomes an issue, I still have lots of room between the air filter and the hood, and jacking up the carb another inch will not be a problem.
Author:  ceej [ Wed May 15, 2013 8:19 pm ]
Post subject: 
The point is to provide sweep air through the engine to keep oil and internals clean for considerably longer than without.

It used to be done with a road tube, but that wasn't very environmentally friendly. The PCV valve, (Positive Crankcase Ventilation valve) was developed to allow the engine to remove particulates from the crankcase, and draw them into the combustion side of the engine. It employs intake manifold vacuum to do the work.
For racing applications, extractors are sometimes used at the headers to draw clean air into the crankcase through the breather.

The breather on top of the valve cover is designed to filter clean air as it enters the engine, not to filter blow-by and fuel vapors from the crank case out to the engine compartment.

2¢

CJ
Author:  kxracer728 [ Thu May 16, 2013 8:07 am ]
Post subject: 
D.I.,

Do you think that the oil being sucked into to carb from the pcv valve affects carb tuning?

I have a holley 1920 on my truck right now and disconnected the pcv valve and plugged the port and the carb tuning especially when you slowly pulled back on the throttle was a lot smoother without some of the gargle and shaking of the motor...I did this because i could see when i removed the pcv hose to the carb that it had oil residue and wondered how that affected carb tuning. Can you get almost perfect carb tuning? Where it just responds with the throttling slow or fast without gargling or motor shaking?

But by not having the pcv connected to the carb my idle went way down and i could not increase it. The engine idled and stayed running but it was so low it loped.

Here's a link to a PCV Air Breather Vent on ebay i don't know if this would work on the slant 6 or not

http://www.ebay.com/itm/180844422808?ss ... 1423.l2649

I was just curious about what to do with pcv valve in case i try an older Carter BBS at some point that may not have the port for the pcv and if i can get better smoother carb tuning without it being connected to the carb and still maintain a nice idle i would probably run it that way if it didn't hurt the motor...you have to figure with oil being sucked into the carb that you may not be able to tune it out
Author:  Aggressive Ted [ Thu May 16, 2013 10:47 am ]
Post subject: 
kxracer728,

If you worried about oil entering your engine though the carb and polluting the intake and valves, install an air/oil separator. I bought an inexpensive one for fun from Jeg's to try out. I am currently running an old tired shot engine, my $100 barn find that had been sitting 10 years under a pile of hay and stuff....., no fuel pump, distributor or carb. It was very rusty and would barely turn over.....that was 3 years ago!
The first week I installed the air/oil separator it collected a fair amount of blow by but by the end of the week the engine started running smoother. It has been a month now and I installed a SMP V180 PCV which doesn't make any rattling noises like the cheap plastic PCV's. I also switched to 15-50W Mobil 1 synthetic and the blow by has reduced and the engine runs very smooth, especially at idle.

Click on the red link below to view pictures of the install.
Author:  kxracer728 [ Thu May 16, 2013 3:32 pm ]
Post subject: 
Aggressive Ted,

WOW! It's hard to believe that you brought something like that back to life and it's useable...I used the Delo 400 15W-40 this time around. Do you have any oil leaks running the synthetic?

As time goes on i will add stuff like the air/oil separator it will probably take me about 2 to 3 years to get this in descent shape. Where i have a nice running and driving truck

I wasn't as worried about oil entering the engine as much as how oil entering the carb was affecting the carb tuning and if the carb is better off without it...from what i've seen on my truck the carb runs better without the pcv oil but it seems they have designed the carb to have it and you may not be able to get a correct idle mixture.

Right now it seems like something is restricting the performance of the truck especially in 3rd gear it just doesn't move down the road like it should...it could be a lot of things i'm going to take the cat off next and make sure there is not some kind of exhaust restriction. Then i'll check the distributor and timing chain and go on from there
Author:  Aggressive Ted [ Thu May 16, 2013 7:06 pm ]
Post subject: 
Quote:
Do you have any oil leaks running the synthetic?
Yes, but they are not bad for as old as this SL6 is. It leaks a little around the crank snout/front damper and a little out the rear main. It will leak about a quart a month which is about 1200 miles right now. With 10-40 Rotella it leaked like a sieve, 20-50 Valvoline was a better. With the Mobile 1 it slowed down a lot. I think getting the SMP V180 PCV really helped equalize the pressure in the bottom end to where it doesn't leak as much as it did with the nylon V165 PCV. The air oil separator was collecting a lot of oil at first with the V165 but really slowed down with the V180. I guess on a shot engine there is a fine balance on crank case breathing. With out either unit plugged in it puffs a fair amount.
Bottom line the oil consumption went way down with the correct PCV.

This is the 5th SL6 I have resurrected from the junkyard. All have gone on to run another 100,000 or more. They are tough engines! :D
Author:  kxracer728 [ Fri May 17, 2013 7:53 am ]
Post subject: 
I can see that the SMP V180 PCV is being sold on ebay

http://www.ebay.com/itm/SMP-STANDARD-V1 ... 72&vxp=mtr

But when you use the car model numbers to look the part # up at oriellys it list the MicroGard - PCV Valve Part # PCV185A


http://www.oreillyauto.com/site/c/detai ... rd=pcv185a

Are they one and the same? I would like to try the v180 or 185 pcv and see if it helps...

My truck leaks a little from what i believe is the rear main seal it's coming from the back of the motor...I believe that there is an inspection plate underneath i haven't taken it off yet to inspect

I took my cat off yesterday here's a pic of what came out of it...

Image

I will have to see how much this helps some of the performance problems i'm having...i'm glad it get it off and eliminate it as being a problem
Author:  Aggressive Ted [ Fri May 17, 2013 3:47 pm ]
Post subject: 
The 185 looks similar but, so does my SMP V214 High Flow which has entirely different results. I would stick with the SMP V180. Chrysler spec'd this PCV from 1960 to 69 on the SL6 and V8 motors. Just going from the stock V165 is night an day compared to the V180.
Author:  kxracer728 [ Sun May 19, 2013 8:41 am ]
Post subject: 
Wow! I didn't realize a pcv valve could affect engine performance so much...but it makes sense that it does. I'm going to stop by the auto parts store today and try one of the V180's

Right now i'm running the stock V163...

Where did you get the jegs air/oil/water seperator?
Author:  Aggressive Ted [ Sun May 19, 2013 10:52 am ]
Post subject:  Air/oil separtor
I ordered on line thru Jeg's http://www.jegs.com/i/JEGS-Performance- ... tId=763433
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