dip stick blown out
 

So what can cause the dipstick to get blown out of the tube, spraying oil all over my engine bay? i am not noticing any crazy oil pressure on the gauge.

bad rings?

or hopefully something easier.

Your crankcase is getting pressurized, could be rings, but I'd try a PCV valve first.

just a regular stock pcv valve or do i need something special or put a 1-way check valve on it or what?

Most people switch to the valve for a 323 GTX, since it was designed for turbo motors. They have a sketchy reputation though, so it's recommended that you test it by blowing on each end to make sure it works before installing it.

needs more pcv.

snap of pic of your vacuum routing.

well currently the turbo is off the car awaiting the install of the twins.

http://www.miatamx5.com/turbo_out_2.jpg

then blame it on forgetting to seal it good. unless it happens again, then the rings are letting compression past and pressuring the crankcase.

the valve should rattle if its not clogged...but my question is this, when you blow in it, which way should it blow by which way should it not?
from valve cover to intake or vice versa

you should be able to blow in the valve in the direction from valve cover to intake and have air pass through. The intake should be able to suck vapor out of the valve cover, it should not be able to allow boost to enter the valve cover(and therefore the crankcase).

let me clarify. the dipstick blew out while i was still boosted. i was on the way to Shore Motorsports to remove the turbo. Just mentioned it was out because Scott asked for a pic of vacuum routing.

Of course, if your PCV is bad the pressure in your crankcase would blow the stick out, hell sometimes it will dent your hood supposedly.

I'd check the PCV valve first. Don't get the cheapo autozone/pepboys stuff, get the real deal Mazda 323 valve. In a pinch, you could cut the hose between the PCV and intake manifold and clamp off the ends temporarily. The shaking/blowing thru it thing to check your PCV does not work as how many of us can blow 12 psi of pressure. Granted, if you can blow thru your PCV then it's done.

Scott asked about vac line routing b/c sometimes people put the line coming out the drivers side of the valve cover to a pressurized source instead of to pre-turbo intake.

You could always do a quick compression test to r/o the rings.

Sounds like your rings are not sealing properly.
But
If you have enough room you can fit a vac pump that runs off the water pump belt . These are supposed to create a real vacuum in the sump, the outlet then goes to a catch tank with an outlet filter.

These are not to seal bad rings but will help bypass on high boost engines.
You can buy propper ones or just use the pumps off 70 through 80's cars , but as I am from Aus our models are different. If you ask at a wrecker for a pollution controll vac pump I'm sure he can help.
Hope this helps.
Col

Don't assume its the rings, check PCV first. Ring's don't just go bad all of the sudden. From your previous posts of you boost spiking after the intake install I would put my money on your PCV going bad from it.

Personally on the motor I'm building I am totally eliminating the pcv valve and I'm going to run a catchan that with VTA 100% of the time. That is the only way to get as close to 0psi as possible on a modern boosted car. Luckily emissions are not something I have to deal with here in mid/southern VA.

A catch can is ok but you still wont get 0psi in the sump on highly boosted engines.
Having a vac in the sump has been proven to increase the hp by getting the rings sealing better.
Having said that not everyone wants to have extra stuff hanging off the engine.
So I would have to agree that the best simple way is to fit a catch can.
Col

well i'm not that stupid. besides, i don't have a line coming out the drivers side of the valve cover(see pics below). its a protege cover so it's in the back on the passenger side right where i would have loved to mount my coil pack. anyway, that's just fitted with a small K&N on a hose.

i'll try the pcv valve once the car is running again, hopefully monday.

http://www.miatamx5.com/twinturbos/tt_01.jpg

http://www.miatamx5.com/twinturbos/tt_02.jpg

that's a whole lotta turbos there!

with my single, lonely turbo, and a k&n on the breather I don't have any oil consumption issues of any kind.

Nice, pretty sure that is Tims kit, i had no idea you were getting it off him if so.

that be the one. we'll be rerouting the charge pipe to the IC since there is no need to go through the fender on my car, everything else is about the same.

has happened to me before, pcv valve fixed it.

People not running PCV's (just little breather filters), are you worried about sludge building up inside your engine? I am running a catch can to the PCV line so I don't get goo in the inside of my new intake, but still using the pcv valve to suck out any sludgy vabors.

well, are you talking about the passenger or driver's side? cuz i HAVE a pcv on the passenger's side, but a breather on the driver's side (laziness on my part, i need ot put a port on my preturbo intake tube and plumb it properly...)

If you build up sludge then you aren't boosting enough.

True :) I have the PCV on the passenger side and an open hole on the driver's side.

I plugged the passenger side and will only be running a catch can on the breather on the driver side, which I have also modded for higher flow.

Yah. I wasn't planning on selling it but I'm working on something 'different' and money in the pocket is always better than dusty parts in storage. Plus this way i'll be able to install it correctly and keep track of it. And I think it's a killer auto-X setup if he sets up TPS referenced boost control like I did with the AEM. I will also see what a larger intercooler, i/c piping, 99 head and intake do for power, see if that stuff is worth the effort and cost.

last time that happened to me, the oil landed on my header and burst into flames. I was in the middle of nowhere at 1am in the morning with my engine bay on fire. Luckily a passerby had a bottle of Mtn. Dew and i was able to get the fire out :) No BS!!!

(ps, how much power did you end up getting from the MSM turbo?)

When I cracked cylinder 4 piston at a track event, the JRSC I had at the time pressurized the crankcase, blew out the dipstick, flung oil all over the header, caught fire, thank goodness a corner worker was within 3 seconds of me to put it out. Only fried an O2 sensor wire. Was a real PITA to clean off the extinguisher powder.

If you're running the PCV and just have a filter on the other end you are sucking in unmetered air into the intake. Doesn't affect things if you deleted the MAF or AFM. If you have the MAF or AFM intact, then plugging the PCV and running the other hose to the turbo inlet pipe before the meter would be a better idea. No unmetered air that way.

never got a chance to dyno it unfortunately.