Unicorn II update.... - Page 3

NightHawk756 · 12-12-2006, 11:20 AM

Quote:

Originally Posted by QWKSNKE

Where do you have your PCV valve venting too. I learned the hardway not ot vent back into the induction system. Need to run it to a catch can

It's actually routed back in. No problems yet....the seperatorjust has to be emptied occasionally.

QWKSNKE · 12-12-2006, 04:41 PM

Quote:

Originally Posted by flashbang756

It's actually routed back in. No problems yet....the seperatorjust has to be emptied occasionally.

Just an FYI, oil fumes are just as bad at lowering octane in the combustion chamber as actual oil is.

Ask me how I know

NightHawk756 · 12-12-2006, 05:21 PM

Quote:

Originally Posted by QWKSNKE

Just an FYI, oil fumes are just as bad at lowering octane in the combustion chamber as actual oil is.

Ask me how I know

Roger that!

Yeah, it seems that it's just barely any oil and mostly water from condensation that ends up in the seperator. But any oil is still worse than none. I'll have to keep in mind that I may have to eventually go the route you did with a catch can.

QWKSNKE · 12-12-2006, 08:10 PM

Quote:

Originally Posted by flashbang756

Roger that!

Yeah, it seems that it's just barely any oil and mostly water from condensation that ends up in the seperator. But any oil is still worse than none. I'll have to keep in mind that I may have to eventually go the route you did with a catch can.

normal driving and a little boost will be 'ok' but don't hammer on it a whole lot until picking up a catch can.

I shot the #3 fire ring out from underneath the head earlier this year because of detonation from oil fumes coming into the induction

NightHawk756 · 12-12-2006, 09:18 PM

I think my o-ringed heads helped a good bit. I put about 800 miles on the car after about 5 dyno pulls. And those miles weren't all just babying it. And then it made about 12 dyno runs all while increasing boost before the gasket blew on #8. And that was before the intake baffle/seperator was added.

Do you have any other type of crankcase evac like a valve cover breather or anything???

QWKSNKE · 12-13-2006, 05:05 AM

Quote:

Originally Posted by flashbang756

I think my o-ringed heads helped a good bit. I put about 800 miles on the car after about 5 dyno pulls. And those miles weren't all just babying it. And then it made about 12 dyno runs all while increasing boost before the gasket blew on #8. And that was before the intake baffle/seperator was added.

Do you have any other type of crankcase evac like a valve cover breather or anything???

yeah. LH valve cover has a breather and I had another PCV on the RH valve cover.

-but-
Going to the standard tension rings (the only reason I tore the engine down a month or so ago) has helped my problem tremendously. Paul had ordered me low tension rings originally and I didn't know it until it was to late

NightHawk756 · 12-13-2006, 05:51 AM

Quote:

Originally Posted by QWKSNKE

yeah. LH valve cover has a breather and I had another PCV on the RH valve cover.

-but-
Going to the standard tension rings (the only reason I tore the engine down a month or so ago) has helped my problem tremendously. Paul had ordered me low tension rings originally and I didn't know it until it was to late

Ahh ok.

I wonder if he knew he ordered those or if that's just what his distributor sent and he didn't know it? Makes me wonder what rings I have.

How do you know? Does it have an affect on combustion? Or excessive blow-by or something?

QWKSNKE · 12-13-2006, 07:12 AM

Quote:

Originally Posted by flashbang756

Ahh ok.

I wonder if he knew he ordered those or if that's just what his distributor sent and he didn't know it? Makes me wonder what rings I have.

How do you know? Does it have an affect on combustion? Or excessive blow-by or something?

my machinist noticed it when reviewing the part number when the engine was being built. Also, that is when my car started having boost issues. Since they were low tension, the boost was collapsing the rings and going past the rings causing excessive pressure in the crankcase. This in turn was forcing more oil and oil fumes out the PCV system and going into the intake track. I killed 3 sets of head gaskets due to this over the course of a year. Unfortunately it took me over a year to figure this out.

NightHawk756 · 04-07-2007, 08:50 AM

Update:

Carried the car back to the dyno for some more minor tuning. It made 482/526 at 10lbs. Which is right at what it was making at 15lbs. with the oiling problem. And that's with pretty conservative timing/fuel for the moment.

Here soon I'll be installing a 3 bar map and turning the boost up.

Lee: I'm now using an evac system like we were talking about. No canister yet, just a filter on the end of the evac line for the moment. This in conjunction with the oil seperator that was already installed. Thanks for the advise!

QWKSNKE · 04-07-2007, 09:16 AM

Quote:

Originally Posted by NightHawk756

Update:

Carried the car back to the dyno for some more minor tuning. It made 482/526 at 10lbs. Which is right at what it was making at 15lbs. with the oiling problem.

Here soon I'll be installing a 3 bar map and turning the boost up.

Lee: I'm now using an evac system like we were talking about. No canister yet, just a filter on the end of the evac line for the moment. This in conjunction with the oil seperator that was already installed. Thanks for the advise!

No problem. Hope that clears any potiential issues up.

12-12-2006, 09:18 PM	#25
NightHawk756 Si vis pacem, para bellum Join Date: Dec 2004 Location: Tick-Tock, Tick-Tock....... Posts: 5,146	I think my o-ringed heads helped a good bit. I put about 800 miles on the car after about 5 dyno pulls. And those miles weren't all just babying it. And then it made about 12 dyno runs all while increasing boost before the gasket blew on #8. And that was before the intake baffle/seperator was added. Do you have any other type of crankcase evac like a valve cover breather or anything??? __________________ 1989 Saleen SSC 1988 AL DPS SSP

04-07-2007, 08:50 AM	#29
NightHawk756 Si vis pacem, para bellum Join Date: Dec 2004 Location: Tick-Tock, Tick-Tock....... Posts: 5,146	Update: Carried the car back to the dyno for some more minor tuning. It made 482/526 at 10lbs. Which is right at what it was making at 15lbs. with the oiling problem. And that's with pretty conservative timing/fuel for the moment. Here soon I'll be installing a 3 bar map and turning the boost up. Lee: I'm now using an evac system like we were talking about. No canister yet, just a filter on the end of the evac line for the moment. This in conjunction with the oil seperator that was already installed. Thanks for the advise! __________________ 1989 Saleen SSC 1988 AL DPS SSP Last edited by NightHawk756; 04-07-2007 at 11:22 AM.