still bettin on the cap
Oil spew from dipstick
Pro
Joined: Aug 2009
Posts: 725
Likes: 4
From: Plano, TX
This is pretty normal on LT1's to push the dipstick out of the tube. I've had two different LT1's and it happened on both of them when you went above the factory redline rpm. They aren't vented very well.
Thread Starter
Racer
Joined: Aug 2011
Posts: 494
Likes: 138
From: Chesapeake, VA
Wow....lot's of discussion.
It's pretty much stock, but has long tube headers, hi-flow cats, and magnaflows. 87k miles.
Just checked/reset timing yesterday.
Cap on the tube may help, but that doesn't solve the problem. It doesn't leak from the factory so why now?
It's pretty much stock, but has long tube headers, hi-flow cats, and magnaflows. 87k miles.
Just checked/reset timing yesterday.
Cap on the tube may help, but that doesn't solve the problem. It doesn't leak from the factory so why now?
Melting Slicks
Joined: Nov 2008
Posts: 2,765
Likes: 5
Crankcase evacuation pumps are used with low tension to medium tension piston ring sets typical.
And with drilled gas ported pistons.
You have to work closely with your engine builder & follow his advice.
You are high speed road racing.
Much different from drag racing or high performance street driving.
Unless you engine is built & setup right for you racing application,
It will fail in short order.
Stick a drag race engine in your Road race C4,
it will fail likely very soon.
Your engine has to built to last for the long run.
At least 1 year of high speed road racing operating over a very wide power band & ran on the ragged extreme much of the time to win races.
2nd or 3 rd place finishes get old by half season.
Crossing the finish line 1st is where its at..................
Brian
Drifting
Joined: Mar 2009
Posts: 1,253
Likes: 4
From: East Wenatchee (2hours from n e where) WA
Its very possible The Fed approved breather system falls short when used on the track.
Team Owner
Joined: Sep 2003
Posts: 20,179
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From: Freedom is never more than one generation away from extinction.
St. Jude '03 thru '24
Burning Brakes
Joined: Feb 2006
Posts: 1,177
Likes: 0
From: VALENCIA PA
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Burning Brakes
Joined: Feb 2006
Posts: 1,177
Likes: 0
From: VALENCIA PA
i dont think you have a real problem high rpms causes it to puke...aside from what is said here it is my experience that the crankase pressure evac system is inadequate. look at the tennie little hoses that vent the system....if you do have blow by 87k miles it is not imposable to have some worn rings. there isnt a lot you can do but rebuild exept put a breather and a catch can with vent to get the press out... have you wooped on it? how often? enuf press to pop the poorly sealing dip stic tube isnt any thing to worry about you can do a compression/leakdown test but seriously cap it and forget it!!!!!! the ls dipstics have a posotive seal o ring snaps into the tube there dip stic is spiraled to keep oil from creaping up the tube if you had that on there it wouldnt puke...or pop up !!!!
Last edited by TRACKMAN2; Oct 24, 2011 at 12:04 AM.
Burning Brakes
Joined: Feb 2006
Posts: 1,177
Likes: 0
From: VALENCIA PA
Thread Starter
Racer
Joined: Aug 2011
Posts: 494
Likes: 138
From: Chesapeake, VA
Think I am going to buy one of the flexible sticks from Jegs/Summit.
Also think I will do a comp test - it's good info.
Also think I will do a comp test - it's good info.
i dont think you have a real problem high rpms causes it to puke...aside from what is said here it is my experience that the crankase pressure evac system is inadequate. look at the tennie little hoses that vent the system....if you do have blow by 87k miles it is not imposable to have some worn rings. there isnt a lot you can do but rebuild exept put a breather and a catch can with vent to get the press out... have you wooped on it? how often? enuf press to pop the poorly sealing dip stic tube isnt any thing to worry about you can do a compression/leakdown test but seriously cap it and forget it!!!!!! the ls dipstics have a posotive seal o ring snaps into the tube there dip stic is spiraled to keep oil from creaping up the tube if you had that on there it wouldnt puke...or pop up !!!!
Thread Starter
Racer
Joined: Aug 2011
Posts: 494
Likes: 138
From: Chesapeake, VA
I sure feel like a dummy.....I rechecked oil level and it looks like there about 1 extra quart in the engine.........wow, thought I had confirmed this was okay before. Sooooo, guess I will change and fill correctly as well as buying a new dipstick since the top of my tube is bent. I feel better that it looks like I found the cause nonetheless....
Thread Starter
Racer
Joined: Aug 2011
Posts: 494
Likes: 138
From: Chesapeake, VA
Just to follow up on this: Problem solved.
I had purchased an oil catch tank and while planning installation.....I noticed the hose on the passenger side seemed too small as it was stretched to fit on the throttle body fitting. The the end going to the 90 degree fitting into the valve cover had a hose clamp which was obviously squeezing the heck out of the hose. I loosened the camp and when I pulled it apart it was a 1/4 barb fitting - WOW. no wonder, and the clamp was probably squeezing the hose shut (or close too it).
I replaced the vent fitting and hose to 1/2 and no more oil spew. Thank God!
I had purchased an oil catch tank and while planning installation.....I noticed the hose on the passenger side seemed too small as it was stretched to fit on the throttle body fitting. The the end going to the 90 degree fitting into the valve cover had a hose clamp which was obviously squeezing the heck out of the hose. I loosened the camp and when I pulled it apart it was a 1/4 barb fitting - WOW. no wonder, and the clamp was probably squeezing the hose shut (or close too it).
I replaced the vent fitting and hose to 1/2 and no more oil spew. Thank God!
