No evac on this,just two breathers
Quote:
he was having alot of problems with pinging up around 4500 + . I set the timing at 36 total with the heaviest msd springs in the pro billet distributor. It still pinged BAD. He talked to someone and the guy put the timing at 31 degrees total,does that seem right ??????/
Guessing he did some damage to the motor when he was trying to get rid of the ping
Quote:
With 2 breathers I'm thinking he has broke some rings
.... pull the breathers and run without them and see
if the valley pan still bows up(push it down first)
It's probably is wounded and is pinging because it's burning oil. Are the plugs oil fouled?
Quote:
With 2 breathers I'm thinking he has broke some rings
.... pull the breathers and run without them and see
if the valley pan still bows up(push it down first)
Quote:
Put a nerf football between valleypan and bottom of intake and it will keep from inverting the valley pan.
Quote:Quote:
With 2 breathers I'm thinking he has broke some rings
.... pull the breathers and run without them and see
if the valley pan still bows up(push it down first)
Is he running the breathers into the exhaust with the check valves? He may have had them go bad. I had it happen on my car. Street driven and bulged 2 pretty close back to back time frame. Took the breather hoses and went to free air. Been fine ever since. Mr. P Body did tell me in another post on this to check the check valves and the tubes that go into the exhaust to confirm there is no problems there.
Quote:
I think proper cyl wall fiinish to ring choice is one of the hardest parts of engine building, done right makes major power done wrong makes for lots of blow by, I think thats what makes some builders combos run stronger than others with the same specs, Nerf football....?
.JPG "5413622-IMG_1128(Small).JPG")
thats something I never thought about, my breather pipe nipple is kinda close to the baffle, we run a header evac so there is negative pressure helping relieve crankcase pressure but the amount of space in between the too can cause a bottle neck in the crankcase, I would think that rpm and cid would effect the space needed?
Quote:
I understand that it could be all of the issues mentioned above but I found out first hand it doesn't take a lot to destroy the valley pan. This picture of the valley pan I just removed. Yes that is a hole(crack). This was all due to my breather caps being to close to the valve cover baffle. They seemed ok but they were not. The engine was and still is running great. This has nothing to do with the pinging but swollen valley pan does not necessarily mean big problem.
Quote:Quote:Quote:
With 2 breathers I'm thinking he has broke some rings
.... pull the breathers and run without them and see
if the valley pan still bows up(push it down first)
Is he running the breathers into the exhaust with the check valves? He may have had them go bad. I had it happen on my car. Street driven and bulged 2 pretty close back to back time frame. Took the breather hoses and went to free air. Been fine ever since. Mr. P Body did tell me in another post on this to check the check valves and the tubes that go into the exhaust to confirm there is no problems there.
Just for terminology, when a person says breathers
I take that to be it is venting to atmosphere and
if its hooked up to the exhaust I call that a evacuation
system and in this case he stated breathers
Quote:
Home of the 149mph Nerf Football
....
Quote:It really was that simple for me. The breathers seemed ok when I put them in but there was enough vertical movement that they could work them selves down to the baffle. I also don't understand why someone would think normal crank case pressure without anything wrong couldn't swell .013 tin. It will push out seals.Quote:
I understand that it could be all of the issues mentioned above but I found out first hand it doesn't take a lot to destroy the valley pan. This picture of the valley pan I just removed. Yes that is a hole(crack). This was all due to my breather caps being to close to the valve cover baffle. They seemed ok but they were not. The engine was and still is running great. This has nothing to do with the pinging but swollen valley pan does not necessarily mean big problem.
hmm, my friend i was talking about also noticed the pcv was really really close to the baffle as well. could just be that simple
Quote:Quote:Quote:
With 2 breathers I'm thinking he has broke some rings
.... pull the breathers and run without them and see
if the valley pan still bows up(push it down first)
Is he running the breathers into the exhaust with the check valves? He may have had them go bad. I had it happen on my car. Street driven and bulged 2 pretty close back to back time frame. Took the breather hoses and went to free air. Been fine ever since. Mr. P Body did tell me in another post on this to check the check valves and the tubes that go into the exhaust to confirm there is no problems there.
Just for terminology, when a person says breathers
I take that to be it is venting to atmosphere and
if its hooked up to the exhaust I call that a evacuation
system and in this case he stated breathers
The original post says no evac, just breathers.. I had the same problem with my 440. Kept blowing valve cover and oil pan gaskets. Put in a evac system and the problem went away.
and we weren't having any back pressure problems but like having more
Quote:Done the same thing plus gave the baffle a little tweak.
Well I had to measure the installed clearance from my breather nipple to the baffle and found less than a 1/16, I thru a vac gauge on it and get 2.5" @ 1200 rpm, pull it back so its almost coming out of the rubber and get 3" so there is definitely something to it, I will grind another 1/16 off the nipple for now and hunt a shorter breather, who would of thought