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post #1 of 12 Old 06-29-2011, 06:48 PM Thread Starter
marvinb
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1991 YJ Wrangler 
 
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Dipstick

I know this might be a couple dumb questions but what's the best way to "vent" a V8 engine? I have a PCV valve installed in the passenger side valve cover. I don't think it's workin correctly, I'm unsure. The reason I ask is because I have a passenger side mounted dipstick&tube and everytime I'm in the throttle I can smell burning oil and when I check to see where the oil might b coming from, it looks as if it's coming from the dipstick tube.
So.... What's the best way to vent the engine?
And.... Where can I get a good, non leaking, matching dipstick & tube that seals to the block really well?


1991 jeep wrangler.SOA. Chevy 305/ 700R4 tranny/ NP231C/J Transfer case, B&M Z gate shifter, Autometer gauges. Mickey Thompson Classic Lock 2s/ 33x12.5x15 federal couragia's. Bushwacker flares.
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post #2 of 12 Old 06-29-2011, 08:43 PM
superj
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are you sure your not dripping a little oil from the valve covers?

you can buy chevy aftermarket small block dipsticks from any auto parts store on the performance wall

I don't feel like working on anything at this time so i sold my yj.
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post #3 of 12 Old 06-29-2011, 08:53 PM
dodger889
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If it's blowing out the dipstick you have more problems then the smell of burning oil. You really should do a leak down on the engine your rings are shot or almost there unless this is a new rebuild then did they turn the rings 180* out from each other 90* on the oil rings.

A 89 yj with a 4.0 aw4 sye out of an 92xj. Now the hard part is done time to get it up in the air just a bit. Working on 8.8 with 3.73 and lsd for the rear. and new D30 hp with 3.73 .
For those who have not figured this out I'm old school but can handle the new too.
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im just cheap, and cheap makes you creative.
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post #4 of 12 Old 06-30-2011, 02:12 AM Thread Starter
marvinb
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It's a fresh rebuild with new rings. Yes they are 180 out. I put them together personally. And yes around the valve covers looked a lil wet, I'll just have to dig deeper I guess.

1991 jeep wrangler.SOA. Chevy 305/ 700R4 tranny/ NP231C/J Transfer case, B&M Z gate shifter, Autometer gauges. Mickey Thompson Classic Lock 2s/ 33x12.5x15 federal couragia's. Bushwacker flares.
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post #5 of 12 Old 06-30-2011, 07:01 AM
dodger889
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Ok on a fresh rebuild until you get about 3000-5000 miles on the engine. Your rings have not seated real good so you could get blowby. Just make sure that you do not have a leak in the valve cover. Also check your PVC and venting on the valve covers. This will keep the internal pressure in check.

A 89 yj with a 4.0 aw4 sye out of an 92xj. Now the hard part is done time to get it up in the air just a bit. Working on 8.8 with 3.73 and lsd for the rear. and new D30 hp with 3.73 .
For those who have not figured this out I'm old school but can handle the new too.
Quote:
Originally Posted by bigsquat View Post
im just cheap, and cheap makes you creative.
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post #6 of 12 Old 06-30-2011, 08:36 AM
vadslram
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If your PCV valve is hooked up right and working you should have a slight negative pressure inside your engine. If you don't then your rings or exhaust valve stems aren't sealing correctly.
Check to make sure your PCV is actually sucking. Could be clogged or into the wrong port on the manifold.
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post #7 of 12 Old 06-30-2011, 10:06 AM Thread Starter
marvinb
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It's a new pcv valve and it's hooked to a vacuum on the bottom front of the edelbrock carb. Is that the right way or should I find a port in the manifold?
The motor may only have about 1000 miles on it since the build.
If you look at the pic of the new carb the hose runs back down the drivers side. It actually runs from the same port on the carb but now it runs to the passenger side valve cover. In the other pic you can see the small red filter sticking out the top of the valve cover. Thats where my pcv valve and grommet are installed. Is this the right set up? Help me guys. Like all of you guys, I have way to much money invested in this jeep for it to not be right.
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1991 jeep wrangler.SOA. Chevy 305/ 700R4 tranny/ NP231C/J Transfer case, B&M Z gate shifter, Autometer gauges. Mickey Thompson Classic Lock 2s/ 33x12.5x15 federal couragia's. Bushwacker flares.
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post #8 of 12 Old 06-30-2011, 10:43 AM
vadslram
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I'm not sure on Edelbrocks, I'm a Holley fan myself.
Does that port pull full vacum no matter what the butterfly position?
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post #9 of 12 Old 06-30-2011, 01:53 PM Thread Starter
marvinb
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I'm not sure about full vacuum all the time. I haven't dug into it that far as of yet. Im off work the next 5 days so I guess I'm going to Dive into it this weekend.
If it doesn't have full vacuum all the time, I'm guessing I should find another vacuum source. Lol

1991 jeep wrangler.SOA. Chevy 305/ 700R4 tranny/ NP231C/J Transfer case, B&M Z gate shifter, Autometer gauges. Mickey Thompson Classic Lock 2s/ 33x12.5x15 federal couragia's. Bushwacker flares.
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post #10 of 12 Old 06-30-2011, 08:21 PM
dodger889
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Where that red filter is should be the oil fill. The other side should be where the PVC is installed.

A 89 yj with a 4.0 aw4 sye out of an 92xj. Now the hard part is done time to get it up in the air just a bit. Working on 8.8 with 3.73 and lsd for the rear. and new D30 hp with 3.73 .
For those who have not figured this out I'm old school but can handle the new too.
Quote:
Originally Posted by bigsquat View Post
im just cheap, and cheap makes you creative.
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post #11 of 12 Old 07-01-2011, 04:14 AM
vadslram
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personal preference on which side the filter and which side is PCV. it should be open all the way through from one side to the other.
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post #12 of 12 Old 07-01-2011, 02:20 PM Thread Starter
marvinb
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Well i think i got her all fixed.... I got a stock dipstick and tube from an 85 chevy 350, this tube fit nice and snug with some sealant on it... My PCV valve is working and has good vacuum on it thru to full throttle, its still connected to the front bottom of carb and for now thats where im leaving it... After finishing everything i took it out for about a 30-40 mile road trip, ran the crap out of it.. stopping frequently to check under the jeep for any leaks, so far so good.. Thanks again guys for your help

1991 jeep wrangler.SOA. Chevy 305/ 700R4 tranny/ NP231C/J Transfer case, B&M Z gate shifter, Autometer gauges. Mickey Thompson Classic Lock 2s/ 33x12.5x15 federal couragia's. Bushwacker flares.
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