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professor245
03-15-2011, 04:10 PM
So my buddy had some issues with crank ventilation on hos B21 after head swap, since the head is 530 and there's no PCV system on the '79 B21, he put the B20 oil cap, but that wasn't enough, engine blew out cam seal...also spitted oil out of the hole in the cap (has blow by), so catch can was needed....didn't work well...so I came to the solution:-P:nod:
Today I realized my idea of double valve cover and here we go:

First took off the valve cover (obviously):-P

http://i847.photobucket.com/albums/ab40/milosprotic/Slika032.jpg

Than cut a piece of sheet metal to cover the cam and valves, to stop the cam from throwing oil trough the cap,, so it would be wedged in over the oil feed and return channels and pressed down by the OE valve cover
made him prep it:nod:

http://i847.photobucket.com/albums/ab40/milosprotic/Slika036.jpg

Then I test fitted and cut it like so (sorry for bad pics, my phone camera was oily)

http://i847.photobucket.com/albums/ab40/milosprotic/Slika038.jpg

http://i847.photobucket.com/albums/ab40/milosprotic/Slika039.jpg

Then put the oe valve cover over it to seriously press down the curved sheet metal
and it looks like this

http://i847.photobucket.com/albums/ab40/milosprotic/Volvo/Slika013.jpg

http://i847.photobucket.com/albums/ab40/milosprotic/Volvo/Slika006-2.jpg

And all is fixed :oogle: car blows pressure out, but not the oil:nod: oil cap is not even needed:nod: no way oil can be pushed trough, we also made the cap as free flow as possible (gutted it)
It works like a charm, test drove it, awesome!

JohnMc
03-15-2011, 04:15 PM
What in the....


Good job treating the symptom, I guess! :-P

RvolvoR
03-15-2011, 04:16 PM
What in the....


Good job treating the symptom, I guess! :-P

yeah....yikes...

professor245
03-15-2011, 04:18 PM
It works great!
It's so wedged in and cut and pressed by valve cover it can't move a millimeter, but also has a lot of room for the cam to spin and bathe in oil:) Also has more than enough room for topping up with oil...

thebornotaku
03-15-2011, 04:30 PM
wait, you put a dirty old piece of scrap metal in your engine without bolting it down?

well hey, whatever works for you.

professor245
03-15-2011, 04:34 PM
wait, you put a dirty old piece of scrap metal in your engine without bolting it down?

well hey, whatever works for you.

Not in my engine:-P
And there's no need to be bolted, think about it, can you see the way it's cut to fit the head casting, and it's pressed down hard by valve cover...also it's galvanized piece of sheet metal, and it has been cleaned.
It's a great way to relieve engine from pressure, without catch can...

professor245
03-15-2011, 04:35 PM
This is TB keep an open mind.

500dollar744ti
03-15-2011, 04:51 PM
actually, the volkswagen 8v motors have the same thing.

if there's so much pressure that the b20 cap doesn't fix it, you have another problem, especially in that n/a motor. if you get the valve cover sealed, it's just going to blow something else out, once you fix that, it will blow something else out, once you fix that it will start popping the dipstick out.

i think there's an underlying problem.

what you have done may work though, it does on the vw engines.

vucko83
03-15-2011, 04:53 PM
It's my car, the B21 in the thread. I tried this and that, catch cans and all, never worked as well as this solution professor245 made, always had too much pressure, oil leakages, even before the blow by,car runs great now, no oil leakages, no blown seals...:)

professor245
03-15-2011, 04:56 PM
actually, the volkswagen 8v motors have the same thing.

if there's so much pressure that the b20 cap doesn't fix it, you have another problem, especially in that n/a motor. if you get the valve cover sealed, it's just going to blow something else out, once you fix that, it will blow something else out, once you fix that it will start popping the dipstick out.

i think there's an underlying problem.

what you have done may work though, it does on the vw engines.

Valve cover is not sealed, the sheet metal only keeps the oil from getting trough B20 cap, it acts like oil separator and nothin more, like I said engine has some blow by, but now the pressure is freely being removed to atmosphere...

skunked
03-15-2011, 04:58 PM
oh wow

professor245
03-15-2011, 04:58 PM
oh wow

lol:-P

professor245
03-15-2011, 05:03 PM
if there's so much pressure that the b20 cap doesn't fix it,
B20 did fix it, but it didn't keep the oil from being pushed trough....so we figured, gutted B20 cap and sheet metal and no problemo:) and truly there's no problems at all. Works like a charm!

vucko83
03-15-2011, 05:08 PM
Works like a charm!

:-D :nod:

mavawreck
03-15-2011, 05:13 PM
What in the world of dope looking waterpumps is that?

professor245
03-15-2011, 05:18 PM
What in the world of dope looking waterpumps is that?

What? it's a normal water pump...maybe the old style clutch fan confused you...

professor245
03-15-2011, 05:24 PM
.

badvlvo
03-15-2011, 05:45 PM
One word, silicone.

badvlvo
03-15-2011, 05:46 PM
One word, silicone.

500dollar744ti
03-15-2011, 05:47 PM
two posts, but not silicon.

Yellow240
03-15-2011, 05:51 PM
You can't deny being a professor.

euroshark
03-15-2011, 05:56 PM
This is why we can't have nice things.

dl242gt
03-15-2011, 06:15 PM
Way to go Milos. :cool: You may also want to make up a plate for the back of the cylinder head. It will help retain the plug in the back of the head so it won't push out with crankcase pressure. You can use the two bolts the usually hold the head mount distributor to hold the plate on. If you look at the IPD site they may have a picture of it.

DNAsEqUeNcE
03-15-2011, 06:19 PM
gedder done!

professor245
03-15-2011, 06:22 PM
You can't deny being a professor.

:-D

professor245
03-15-2011, 06:24 PM
Way to go Milos. :cool: You may also want to make up a plate for the back of the cylinder head. It will help retain the plug in the back of the head so it won't push out with crankcase pressure. You can use the two bolts the usually hold the head mount distributor to hold the plate on. If you look at the IPD site they may have a picture of it.

Thanks Dave!
We had the plug custom made of solid aluminum for all 240's we drive here;-)

Tom Clark
03-15-2011, 07:17 PM
to all those that don't have faith in this solution, i have done this on a 22r and i know it works like a charm

volvomaniac
03-15-2011, 07:19 PM
That's what I call ''Serbian Fix''! :lol:

professor245
03-15-2011, 07:22 PM
to all those that don't have faith in this solution, i have done this on a 22r and i know it works like a charm

Finally, a believer...:-P

professor245
03-15-2011, 07:23 PM
That's what I call ''Serbian Fix''! :lol:

:rofl::rofl::rofl::rofl::rofl::rofl::rofl::rofl::r ofl: soooooo true!!!

Mr. Blewregaurd
03-15-2011, 10:36 PM
what, no valve cover gasket on hand?

Volvorules
03-15-2011, 10:45 PM
How many tubes of orange RTV is that?

professor245
03-16-2011, 07:29 AM
How many tubes of orange RTV is that?

It had to be like that, and yeah no gasket on hand, it was a a quick fix on the sidewalk:rofl: it's this guys DD and I didn't wanna drive to the shop in rush hour to get the gasket, gonna get today...we wanted to see first if the solution works.:-P

Cojones
03-16-2011, 09:05 AM
It had to be like that, and yeah no gasket on hand, it was a a quick fix on the sidewalk:rofl: it's this guys DD and I didn't wanna drive to the shop in rush hour to get the gasket, gonna get today...we wanted to see first if the solution works.:-P

Damn that's ghetto :lol:

professor245
03-16-2011, 09:08 AM
Damn that's ghetto :lol:

Sure is:rofl:
I don't work on my car like that though :rofl:

smokeyfan1000
03-16-2011, 11:20 AM
Why not use the OEM B21 n/a cam cover with the "snout" & hose that runs to top of air box like Volvo made them? I presume it doesn't fit the head being used?

professor245
03-16-2011, 11:23 AM
Why not use the OEM B21 n/a cam cover with the "snout" & hose that runs to top of air box like Volvo made them? I presume it doesn't fit the head being used?

No it doesn't fit by far:nod:

Ziko
03-16-2011, 11:58 AM
I like it! Real Serbia style! :oogle:

professor245
03-16-2011, 12:00 PM
I like it! Real Serbia style! :oogle:

:rofl::nod:

nathaninwa
03-16-2011, 01:03 PM
Not much love in this thread!.....simple oil baffle, simply works. I usually weld them to the underside of the cover but this works just as well.

GMS
03-16-2011, 01:16 PM
lol thats definatly Turbobricks! :rockon:

500dollar744ti
03-16-2011, 01:16 PM
Not much love in this thread!.....simple oil baffle, simply works. I usually weld them to the underside of the cover but this works just as well.

exactly, while most of the people on this site benchrace where to put their gauges, this guy is actually fixing his problem.

professor245
03-16-2011, 01:19 PM
exactly, while most of the people on this site benchrace where to put their gauges, this guy is actually fixing his problem.

Thanks;-)

volvogeek
03-16-2011, 02:44 PM
I've always taken them out of the valve covers I've owned, they never seem to want to stay in place and make a HELL of a racket bouncing against the cam. But if this thing works, kudos! Nicely done.

professor245
03-16-2011, 03:08 PM
I've always taken them out of the valve covers I've owned, they never seem to want to stay in place and make a HELL of a racket bouncing against the cam. But if this thing works, kudos! Nicely done.

It can't budge, I cut it to fit the head casting it self, and really pressed it down with valve cover, so it's under a lot of pressure.

propav8r
03-16-2011, 03:10 PM
Junkyard engineering at it's finest. Nice quick fix

professor245
03-16-2011, 03:13 PM
Junkyard engineering at it's finest. Nice quick fix

That was needed :-P