Lets talk about blow-by

[Lex]

Gotcha, so now the VC is vented and before it was going to the TIP. Are you running the other line to the intake? That would cause a bit of an intake leak.

[atvfreek]

Originally Posted by DISIindahead Been out of the loop for a minute but monitoring this thread very closely. Started noticing smoke puffs sometimes at take off at a light or stop sign. Check fluid level and it was normal. Now I've never had to drain my OCC before at all but my buddy noticed the other day what looked like oil seeping out of the cold pipe of my top mount. Me thinks its the OCC and its not allowing proper exit for all the remaining pressure. I'm still trying to figure it out. I know @rfinkle2; had me do a compression test but couldnt do it accurately because the battery kept shitting out. Still have to get a new battery but also watching to see if this issue I am having is either caused by my PCV or the OCC. @atvfreek; @Lex; @802MS3;

Is your VC vent routed to the tip

[802MS3]

ha I'm no expert, but oil in your coldpipe is no bueno. do you think it made it all the way through the intercooler? where is the catch can?

[atvfreek]

Originally Posted by Lex Gotcha, so now the VC is vented and before it was going to the TIP. Are you running the other line to the intake? That would cause a bit of an intake leak.

I have tip capped off and both VC ports going to the occ

[Lex]

Originally Posted by atvfreek I have tip capped off and both VC ports going to the occ

You'd think that the dipstick is less likely to blow/have less CC pressure with the TIP connected to the VC rather than just the VC being VTA. That is unless those SM OCCs had some pretty large restrictions.

[atvfreek]

Originally Posted by 802MS3 ha I'm no expert, but oil in your coldpipe is no bueno. do you think it made it all the way through the intercooler? where is the catch can?

That's how I ended up with the thread. Lol

I had VC to TIP. Was getting oil pushed into the tip, through the turbo, intercooler etc.

The I stuck an occ between the VC and TIP. The pressurized can would still push the oil to the TIP and through everything else.

Then I blocked the TIP and vented my can. Still pushing oil from the VC put the occ filter. Lol

Complete shit show.....

Originally Posted by Lex You'd think that the dipstick is less likely to blow/have less CC pressure with the TIP connected to the VC rather than just the VC being VTA. That is unless those SM OCCs had some pretty large restrictions.

I bet those cans are pretty restrictive, and probably only meant to be used for vacuum and not as a vented can. But JBR makes is Vta kit for them and they seem to be having good success. But who knows. Lol

[DISIindahead]

Originally Posted by atvfreek Is your VC vent routed to the tip

No running VTA down to the ground.

Originally Posted by 802MS3 ha I'm no expert, but oil in your coldpipe is no bueno. do you think it made it all the way through the intercooler? where is the catch can?

I don't know if it made it all the way through the intercooler or not but there was a while that look like it was coming out of the cold pipe. The OCC is mounted under the intake as per Matt Damon's instructions.


Sent from my Motorola DynaTAC 8000X

[Lex]

Originally Posted by DISIindahead No running VTA down to the ground. I don't know if it made it all the way through the intercooler or not but there was a while that look like it was coming out of the cold pipe. The OCC is mounted under the intake as per Matt Damon's instructions. Sent from my Motorola DynaTAC 8000X

If the VC is not attached to the TIP, the only place where oil would be coming through the IC is from the turbo itself.

[rfinkle2]

@SLOWHATCH; has been running methanol consistently in tank for quite a while now.

[atvfreek]

Exactly what Lex said, If the TIP is not connected to the VC, the only place for the oil to come from is the turbo itself

[DISIindahead]

Originally Posted by Lex If the VC is not attached to the TIP, the only place where oil would be coming through the IC is from the turbo itself.

Ok let me get back on my computer to read more up on it because I think I saw where someone was running it from the VC to the OCC. Might just try that.

Sent from my Motorola DynaTAC 8000X

[SLOWHATCH]

Originally Posted by rfinkle2 @SLOWHATCH; has been running methanol consistently in tank for quite a while now.

You smoking that stuff again? Or did I miss something? lol

Yes, I've been kinda poor lately so really only been running about 1/2 gallon on top of the spray with good results. Although I haven't ran any logs in a while. Maybe i'll do that soon.

[rfinkle2]

Originally Posted by SLOWHATCH You smoking that stuff again? Or did I miss something? lol Yes, I've been kinda poor lately so really only been running about 1/2 gallon on top of the spray with good results. Although I haven't ran any logs in a while. Maybe i'll do that soon.

Things veered in a different direction, but there was some talk about in tank meth use.

[Voltwings]

Small sidetrack here, since i suppose its semi relevant to this thread. Unfortunately i do not have clean before / after logs because im just not terribly good about keeping them organized, but switching to apply a vacuum on the Crankcase / VC dropped spool on my 35r about 200 rpms it seems.

I had @HTP; build me a custom 4" intake with 2 valve cover breather ports, 1 is actually routed to the valve cover, the other its routed to the second port of my perm plate with a CV.

Basically with this set up, i have the IM pulling a vacuum on the crankcase (with catch can) and have fresh air entering the VC via the TIP, just like stock. You will notice i mentioned earlier i have a CV between the crankcase and TIP, the thought process here being that the IM will not be able to pull a vacuum on the intake through the crankcase since IM vacuum > TIP vacuum. Thats probably not something that will ever happen, but the combined effects of Vacuum in the TIP, and crankcase pressure will surely allow it to open and vent at WOT, so better safe than sorry.

Enter boost, and the TIP now pulls a vacuum on the VC and crankcase simultaneously. Obviously this is less than ideal, and i will see about getting some sort of in line cans / filters / etc... but the increase (or is it reduction? whats grammatically correct when saying the turbo spools faster haha?) in spool leads me to believe its doing its job quite well.

I wont be off for several days, but i will try to Vent the VC and CC again and log, then pull vacuum on them and log to back up my claims if anyone is interested.

[kritz]

How about these?

Childs & Albert, Zero Gap Ring Set, 4.130 Bore - Competition Products

[rfinkle2]

I don't think it is ideal, but I'm going to use the oil cap breather to keep my dipstick home and a simple catch can with a stock pcv to do the remaining vapor clean up.

It seems the more complex things get, the more problems arise.

For now, I'm concentrating on keeping my dipstick in place, and CCP as low as possible.

[Voltwings]

Originally Posted by rfinkle2 It seems the more complex things get, the more problems arise.

Shhhh lol i'm trying to justify this rats nest of Hoses check valves and catch cans.

To avoid a pointless double post, why dont we run something like the Supercharged mustangs seem to do? It seems instead of having a can for the contaminants to settle out in (probably ideal...), they just use an inline filter. Find said filter and replace every so often for the sake of a clean engine bay? I could be ok with that.
http://www.summitracing.com/parts/vo...FSRp7AodkWEAuA

[himurax13]

Well I plan on having HTP make me 2 bungs to connect to the valve cover and the perm plate (with a check valve) and to use in conjunction with the the oil fill cap breather and no catch cans since I do not have blow by at the moment to help alleviate high crank case pressure but still maintain oem like vacuum when nit in boost.

Sent via blown passenger side speakers.

[Voltwings]

Originally Posted by himurax13 Well I plan on having HTP make me 2 bungs to connect to the valve cover and the perm plate (with a check valve) and to use in conjunction with the the oil fill cap breather and no catch cans since I do not have blow by at the moment to help alleviate high crank case pressure but still maintain oem like vacuum when nit in boost. Sent via blown passenger side speakers.

Give them a call, Matt started working on my intake that day since it was a 1 off. I really like the guys over at @HTP;, very great to work with.

However, I originally mentioned this idea and it was shot down by a few gear heads because the TIP provides so little actual vacuum during daily driving, you're essentially the same as full VTA during DD at that point. That's why I ended up running my setup the way I did, but as its been said 100x before, what works for one wont work for all.

[atvfreek]

Originally Posted by rfinkle2 I don't think it is ideal, but I'm going to use the oil cap breather to keep my dipstick home and a simple catch can with a stock pcv to do the remaining vapor clean up. It seems the more complex things get, the more problems arise. For now, I'm concentrating on keeping my dipstick in place, and CCP as low as possible.

I simplified the hell out of mine the best I could. IM is back to the PVC as it would be stock. (Although i may put a cc back on there) Then i have the stock VC port and additional VC port going to the vented can.

My dipstick hasn't tried to pop since December when I added the second VC port. But unfortunately the dipstick popping was the beginning of an uphill battle with CC pressure, but think I finally have it. Fingers crossed!

[802MS3]

@rfinkle2; please don't let your dipstick pop and ruin your clean clean engine bay!

[ms3blackmica]

Many great points brought up in this thread. I agree 100% with Ziggo that the good ol compression test is a definite when dealing with these issues. If compression is good, deal with venting more.

Lately from what I have seen and spoken with others about who are low on compression (i.e. 150 PSI at sea level) and are having a very difficult time evacuating CC pressure that no matter how much they vent, nothing will stop it from pushing oil through their vents and still blows the dipstick.

Lowering boost is about the only savior in their situations.

FWIW I have 72,000 miles now (4 years old) and very high compression #'s for an OEM MZR (205-210 PSI in all 4). To this day, I have not once ever had a trace of a single oil film or droplet in my IC or charge tubes. My turbo/TIP has never once collected oil either over these 72,000 miles. Everything stays DRY quite literally.

I do vote yes in that some OEM engines can be "looser" in the same sense that I believe mine is "tighter".

[mrmonk7663]

Is your valve cover routed to your TIP? I took off my intercooler the other day at 37k miles. I have a Matt D catch can setup per his instructions....valve cover routed to tip. My intercooler had not a trace in it either. My intake tract looks good as well. I'm wondering if nasty oil vapors going to intake are not a concern....and when you do find them in the intake, it is a sign something else is messed up. If this is possibly the case, then I see no reason for any type of vented catch can...sealed cans should work fine, even with perm plate routing.

Originally Posted by ms3blackmica Many great points brought up in this thread. I agree 100% with Ziggo that the good ol compression test is a definite when dealing with these issues. If compression is good, deal with venting more. Lately from what I have seen and spoken with others about who are low on compression (i.e. 150 PSI at sea level) and are having a very difficult time evacuating CC pressure that no matter how much they vent, nothing will stop it from pushing oil through their vents and still blows the dipstick. Lowering boost is about the only savior in their situations. FWIW I have 72,000 miles now (4 years old) and very high compression #'s for an OEM MZR (205-210 PSI in all 4). To this day, I have not once ever had a trace of a single oil film or droplet in my IC or charge tubes. My turbo/TIP has never once collected oil either over these 72,000 miles. Everything stays DRY quite literally. I do vote yes in that some OEM engines can be "looser" in the same sense that I believe mine is "tighter".

[ms3blackmica]

Yes routed to the TIP as per OEM.

[Dano]

from the SP oil cap filter thread.

Originally Posted by SLOWHATCH Also fwiw, there are way more 1st gen MZR engines out there cranking out 200 psi compression results vs 2nd gen. Most 2nd gens are always in the 180 psi range.

I concur...my genwan motor hot was 192ish...my brand new motor with PU slugs is 183ish.

if they didn't raise the overall dome height while cutting in the fuel pocket..then compression would go down. I didn't measure them while I had both in my hands

Mazda might have been killing a few birds at once with the PU design.

zoom zoom boom due to VVT and dynamic compression coupled with long highway cruise conditions
lessen cylinder wall wash
better fuel atomization

just a guess on that 1st one but we know 2 & 3 are most likely.

knock wood I am not seeing any blowby with my oversized ring gaps [ for OEM that is] @ 26PSI, PERM Plate and dual OCCs...hahah

I guess I shouldn't see any... but there also is not much oil in the cans.

[Dano]

maybe these ring land posts should go over into the ringland thread.

if we think so, I will attempt to move them or lose them forever..whichever the gods choose on that day.

[pwned]

Originally Posted by Dano from the SP oil cap filter thread. I concur...my genwan motor hot was 192ish...my brand new motor with PU slugs is 183ish. if they didn't raise the overall dome height while cutting in the fuel pocket..then compression would go down. I didn't measure them while I had both in my hands Mazda might have been killing a few birds at once with the PU design. zoom zoom boom due to VVT and dynamic compression coupled with long highway cruise conditions lessen cylinder wall wash better fuel atomization just a guess on that 1st one but we know 2 & 3 are most likely. knock wood I am not seeing any blowby with my oversized ring gaps [ for OEM that is] @ 26PSI, PERM Plate and dual OCCs...hahah I guess I shouldn't see any... but there also is not much oil in the cans.

Link to the SP oil cap thread?

[DTKII]

Originally Posted by Dano maybe these ring land posts should go over into the ringland thread. if we think so, I will attempt to move them or lose them forever..whichever the gods choose on that day.

Didn't mean to derail the thread... But I was experiencing a shit ton of blow by due to cracked ring lands.. If I were to guess prob around 20-25 psi coming out of the catch can at idle it was enough to blow the hose off of the valve cover breather when I put my finger over the hose coming off of the PVC valve... Feel free to move or delete my posts if needed.

[atvfreek]

Originally Posted by DTKII Didn't mean to derail the thread... But I was experiencing a shit ton of blow by die to cracked ring lands.. If I were to guess prob around 20-25 psi coming or of the catch can at idle it was enough to blow the hose off of the valve cover breather when I put my finger over the hose coming off of the PVC valve... Feel free to move or delete my posts if needed.

It's all relative. What is important is if people experience oil trying to escape, especially at a rapid rate, a compression and leakdown needs to be done first, then try to control it.

[Dano]

Originally Posted by DTKII Didn't mean to derail the thread... But I was experiencing a shit ton of blow by due to cracked ring lands.. If I were to guess prob around 20-25 psi coming out of the catch can at idle it was enough to blow the hose off of the valve cover breather when I put my finger over the hose coming off of the PVC valve... Feel free to move or delete my posts if needed.

no not at all....like atvfreak said its all related but to keep thinks organized this info would be great in our ringland thread. more data in one place is the goal which is hard to do on a forum

Originally Posted by pwned Link to the SP oil cap thread?

http://www.mazdaspeedforums.org/foru...ml#post2134830

[Dano]

ringland conversation moved here

MZR DISI Ringland Failures