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High crankcase pressure? #1281444 08/08/12 01:45 PM 08/08/12 01:45 PM
Joined: Feb 2003 Posts: 1,942 Metro Detroit OUTLAWD OP top fuel
OUTLAWD OP top fuel Joined: Feb 2003 Posts: 1,942 Metro Detroit	I have noticed that I am blowing oil out of the dipstick tube, and pushing the dipstick out. Is this an issue of high crankcase pressure or oil level too high? The car sat a few years, and I just started driving it alot lately. now that I think back, I used to run the oil a little "low" and picked up a few tenths with no adverse effects. 360 stock pan/pickup hi volume oil pump PCV (new valve) breather in other valve cover No signs of excessive blowby out of the breather. Engine has ~7k miles, <100 passes. I am worried that sitting may have messed with how the rings are sealing...but it doesn't smoke at all, even at the track. So should I just stop worrying and drain a 1/2 qt out of it?? Thanks! Dave Faster, Faster until the thrill of speed overcomes the fear of death... 71 Swinger - slowly collecting dust/parts 66 Belv. II - just a streetcar 88 Mustang - turbo LS beater

Re: High crankcase pressure? [Re: OUTLAWD] #1281445 08/08/12 01:51 PM 08/08/12 01:51 PM
Joined: Jan 2004 Posts: 13,247 Mt. Vernon, Ohio dartman366 I Live Here
dartman366 I Live Here Joined: Jan 2004 Posts: 13,247 Mt. Vernon, Ohio	I would dump a little out of it and give it a try. Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.

Re: High crankcase pressure? [Re: OUTLAWD] #1281446 08/08/12 01:54 PM 08/08/12 01:54 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Easiest thing to do is drain a little oil out then try it again.... but my opinion is the pressure getting past the rings... but see if they set in... you dont want to do what I'm doing now unless its needed

Re: High crankcase pressure? [Re: MR_P_BODY] #1281447 08/08/12 02:28 PM 08/08/12 02:28 PM
Joined: Feb 2003 Posts: 1,942 Metro Detroit OUTLAWD OP top fuel
OUTLAWD OP top fuel Joined: Feb 2003 Posts: 1,942 Metro Detroit	Quote: Easiest thing to do is drain a little oil out then try it again.... but my opinion is the pressure getting past the rings... but see if they set in... you dont want to do what I'm doing now unless its needed It looks like I'll be pulling the heads over the winter to do head gaskets...weeping a little water out of the front...figure at that time I might as well upgrade the bumpstick, etc...but I'd really like to be able to leave the bottom end alone for now, and focus time/energy on a new build instead of rehashing this one... will do comp/leakdown when I remember to borrow the kit from work. but the oil level is an easy check for now Faster, Faster until the thrill of speed overcomes the fear of death... 71 Swinger - slowly collecting dust/parts 66 Belv. II - just a streetcar 88 Mustang - turbo LS beater

Re: High crankcase pressure? [Re: OUTLAWD] #1281448 08/08/12 06:27 PM 08/08/12 06:27 PM
Joined: Aug 2003 Posts: 43,116 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,116 Bend,OR USA	Pull the breather cap and see if it blows oil out of it when revving it under a load, like a full pass I have taped a shop rag folded up over the oil filler holes to see if te motor was blowing oil do to crankcase pressure BTW, some breather caps have very little holes in the bottom to let the crankcase pressure out, I switched my stroker motor over to a set of Mr Gasket breather caps and that cured my oil dipstick from blowing out after several runs with the other breather caps Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: High crankcase pressure? [Re: Cab_Burge] #1281449 08/08/12 08:55 PM 08/08/12 08:55 PM
Joined: Feb 2003 Posts: 1,942 Metro Detroit OUTLAWD OP top fuel
OUTLAWD OP top fuel Joined: Feb 2003 Posts: 1,942 Metro Detroit	Thanks! Can't hurt to try... I had one of the on the pass side with a baffled gromet and a PCV on drivers side. Just replaced the fill cap with one of these I had laying around Faster, Faster until the thrill of speed overcomes the fear of death... 71 Swinger - slowly collecting dust/parts 66 Belv. II - just a streetcar 88 Mustang - turbo LS beater

Re: High crankcase pressure? [Re: OUTLAWD] #1281450 08/08/12 10:55 PM 08/08/12 10:55 PM
Joined: Nov 2006 Posts: 635 mississippi bentwheel43 mopar
bentwheel43 mopar Joined: Nov 2006 Posts: 635 mississippi	I had to put a spring on my duster it was blowing the stick out 3" every pass and blowing oil out of Hughes valley pan.I put a pump off of a 2000 firebird it stopped all of it. 7328074-002.JPG (115 downloads) Section 8 Racing We are nuts about racing.

Re: High crankcase pressure? [Re: bentwheel43] #1281451 08/08/12 11:02 PM 08/08/12 11:02 PM
Joined: Nov 2006 Posts: 635 mississippi bentwheel43 mopar
bentwheel43 mopar Joined: Nov 2006 Posts: 635 mississippi	this is the other side and I put the stock valley pan back on. 7328087-003.JPG (104 downloads) Section 8 Racing We are nuts about racing.

Re: High crankcase pressure? [Re: bentwheel43] #1281452 08/08/12 11:50 PM 08/08/12 11:50 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: this is the other side and I put the stock valley pan back on. Why run a breather on it with a vac pump.... just put a adjustable relief valve set at a point IF that pump can pull enough vac

Re: High crankcase pressure? [Re: MR_P_BODY] #1281453 08/09/12 12:20 AM 08/09/12 12:20 AM
Joined: Nov 2006 Posts: 635 mississippi bentwheel43 mopar
bentwheel43 mopar Joined: Nov 2006 Posts: 635 mississippi	when I pull the breather off and put my hand over it it sucks good and speeds the pump up when the cap is off.It got the pressure out of the motor.It also pull the water out as well as some oil maybe 3 oz in 8 or 9 passes.Stopped all the leaks it problilly would suck harder and maybe hurt the pump maybe becauce it will slow it down alot if I put a cap on it..I thank it cost about $125 for every thing. Last edited by bentwheel43; 08/09/12 12:25 AM. Section 8 Racing We are nuts about racing.

Re: High crankcase pressure? [Re: bentwheel43] #1281454 08/09/12 12:34 AM 08/09/12 12:34 AM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Isnt that the GM vac pump..... what car/truck is it for

Re: High crankcase pressure? [Re: MR_P_BODY] #1281455 08/09/12 01:23 AM 08/09/12 01:23 AM
Joined: Nov 2006 Posts: 635 mississippi bentwheel43 mopar
bentwheel43 mopar Joined: Nov 2006 Posts: 635 mississippi	2000 firebird,it works real good keeping the water out of the valve cover.On a friend sb chevy it pulls 5# @ the stick tube.I don't know if he has a breather on it. Section 8 Racing We are nuts about racing.

Re: High crankcase pressure? [Re: MR_P_BODY] #1281456 08/09/12 11:39 AM 08/09/12 11:39 AM
Joined: Sep 2006 Posts: 1,305 Hobart,Indiana MoparPitBull Hollywood
MoparPitBull Hollywood Joined: Sep 2006 Posts: 1,305 Hobart,Indiana	Yes Mr.Body...GM smog air pump used on '99 Corvette.Used them on a few alky motor cars to remove condensation from oil...a poor mans vacuum pump so to speak.Must be mounted in correct position to work best.Advance Auto part #32-2600M @ $95 w/warranty.

Re: High crankcase pressure? [Re: MoparPitBull] #1281457 08/09/12 11:48 AM 08/09/12 11:48 AM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: Yes Mr.Body...GM smog air pump used on '99 Corvette.Used them on a few alky motor cars to remove condensation from oil...a poor mans vacuum pump so to speak.Must be mounted in correct position to work best.Advance Auto part #32-2600M @ $95 w/warranty. Any idea what the amp draw is on them... what size fuse they run

Re: High crankcase pressure? [Re: MR_P_BODY] #1281458 08/09/12 12:11 PM 08/09/12 12:11 PM
Joined: Sep 2006 Posts: 1,305 Hobart,Indiana MoparPitBull Hollywood
MoparPitBull Hollywood Joined: Sep 2006 Posts: 1,305 Hobart,Indiana	No...don't know the amp draw. Had it set up with its own toggle w/20 amp fuse. Only problem ever had was the foam on the inside of pump would get mushy from combination of oil/condensation...started bringing it back at beginning of season taking advantage of warranty. And sorry, its Mr.P Body..lol

Re: High crankcase pressure? [Re: MoparPitBull] #1281459 08/09/12 06:29 PM 08/09/12 06:29 PM
Joined: Feb 2003 Posts: 1,942 Metro Detroit OUTLAWD OP top fuel
OUTLAWD OP top fuel Joined: Feb 2003 Posts: 1,942 Metro Detroit	hmm...I may try that pump out regardless of my problem, always wanted to try out a vac pump. Mr.P, what kind of vacuum should I look for if I am setting a relief valve? Too much is a bad thing in this case, correct? Faster, Faster until the thrill of speed overcomes the fear of death... 71 Swinger - slowly collecting dust/parts 66 Belv. II - just a streetcar 88 Mustang - turbo LS beater

Re: High crankcase pressure? [Re: OUTLAWD] #1281460 08/09/12 06:55 PM 08/09/12 06:55 PM
Joined: Nov 2006 Posts: 635 mississippi bentwheel43 mopar
bentwheel43 mopar Joined: Nov 2006 Posts: 635 mississippi	I suck 3 or 4 oz. of oil on 8 passes with a breather may suck more if I cap it.The cool air gose in the motor it never blow the stick out again,keeps the water out.I drilled a hole and got that fitting from Star mach about $37 bucks toggle with 20amp. pump was about $27 ebay $8 for shippng.You won't want to run it all the time just running it.We do the burnout then turn it on. Last edited by bentwheel43; 08/09/12 06:57 PM.

Re: High crankcase pressure? [Re: OUTLAWD] #1281461 08/09/12 08:34 PM 08/09/12 08:34 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: hmm...I may try that pump out regardless of my problem, always wanted to try out a vac pump. Mr.P, what kind of vacuum should I look for if I am setting a relief valve? Too much is a bad thing in this case, correct? It would depend on the pump.... on my dry sump I can get 12"HG with just the pump so I dont run a vac pump on it... if I were to use that I might set it at 5" to 6"HG... because I would think (from what the others are saying it might not like more) but I would have to see what the pump can do

Re: High crankcase pressure? [Re: OUTLAWD] #1281462 08/09/12 08:53 PM 08/09/12 08:53 PM
Joined: Jan 2003 Posts: 344 Burlington, Ontario Canada Dave_S enthusiast
Dave_S enthusiast Joined: Jan 2003 Posts: 344 Burlington, Ontario Canada	From listening to the radio chatter from the Denver NHRA race, someones crew member reported " data logger on, vacuum pump on" So I assume they are also useing an electric vacuum pump. Not like the one mentioned here, I'm sure, but be looking into one for my car too. Dave Stillie '73 Swinger 5.7 Hemi, 88mm turbo, powerglide, cal-tracs & 8 3/4 Mega-Squirt EFI [email]8.93@149 [/email]

Re: High crankcase pressure? [Re: Dave_S] #1281463 08/10/12 12:50 PM 08/10/12 12:50 PM
Joined: Feb 2003 Posts: 1,942 Metro Detroit OUTLAWD OP top fuel
OUTLAWD OP top fuel Joined: Feb 2003 Posts: 1,942 Metro Detroit	Doing some msg board searching, it appears as if a similar ford part off a 90's Cobra might be better. Didn't find it available anywhere though... F6ZZ-9A486-DA One guy seemed to be blowing 20A fuses, Buit I'm not sure on his setup. There is some internal foam on the GM units that may restrict it, and it is suggested to remove it. Faster, Faster until the thrill of speed overcomes the fear of death... 71 Swinger - slowly collecting dust/parts 66 Belv. II - just a streetcar 88 Mustang - turbo LS beater

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