Bought my old zed back, because race car

PCV system pretty much sorted,

4 dash 8 breathers, two from stock location two from the next humps back

dash8 is 3/4 UNF which once tapped barley leaves any metal left.. i cracked one of them while doing it.. so, scared and shaking, i decided to try my newly aquired ally welding skills (very low skills, but better than last week) to the test on oil impresganted skanky old rocker covers

came out great..




before grinding

after grinding


clearance to the drivers side throttle linkage is super close.. doesnt touch but who knows once everything is heated up.. ill grind it back a tad just to make sure (plus theres no rubber gaskets on the intake rocker cover in this pic.. it will lift her up a mm or so)



progress on intercooler piping welding

(the flange was already done by someone else, the next vertical weld is mine)

although that 1" of good weld is followed by 6" of crap.. but progress is progress

 

That's one or six so far, but all good progress dude. I hope to pick up the same skills shortly too.

 

Andrew, why did you decide to use fittings for the breathers?

I'm planning to simply block off the pcv's completely at both the manifold and the rear passenger exhaust cam cover, and run standard low pressure hose from the push on fittings on the front of the intake covers to a catch can mounted where the battery normally goes, and then of course block off the outlet on the intake pipes.

 

i was going to use pipe to braid fittings off the end of the standard front inlet cover pipes.. decided this will look cooler

hopefully once all finished i can keep it neat and it doesn't end up looking like a dogs breakfast

I wanted 4 though, as after 25000 ks at 24psi all my oil seals are showing signs of weeping.. figured the extra two will help keep sump pressures down

i originally did this setup some 7 years ago, so im going to use the same area (as it is baffled inside the rocker cover) to take the 3rd and 4th line from.. i cant do it like chewys awesome pictures lower in the thread as i have a top mount fuel rail that gets in the way, so right angle fittings will be used

still might do those ones in ally hardline and try and get them under the manifold out to the back like my original configuration but with larger line

http://www.aus300zx.com/forum/showthread.php?t=248418

 

well im not dropping oil at all.. but the passenger side exhaust and the drivers side inlet were all gummied up with greasy dirt, and the rear main seal had a couple of drops past it

and the drivers side inlet rocker cover started leaking into the spark plug hole

i have blown the dipstick out once while on the dyno.. compression is still over 160 on all cylinders, (immediate compression test following the dipstick blowout)

i rekon the fire-arrester/restrictors in the front rubber PCV pipes were to blame.. they're actually quite hard to blow through when i pulled them off and were brand new on the rebuild.. and obviously the rear PCVS are closed once on boost

 

I was going to ask, I assume you've pulled those out?

how do they arrest fire exactly?

 

by blocking the pipes so much nothing can go through them?

 

I thought they were a one way valve like the PCV's?

Ie The PCV's close on boost/open on vacuum.
The front hoses open on manifold boost/(actually open on vacuum due to the intake suction)/close on manifold vacuum.

 

nah the front rubber hoses have some sort of pipecleaner wire brush thing in them, as they go into the turbo hoses in the inlet side of the compressor theyre always under vaccum so dont need a PCV valve

 

I don't see your Taurus e-fan project yet?

 

wow,
love the colour, love the rims,
nice Z.

idk why I havent seen this one before.
its like a lighter version of the brickyard red.

 

Might you try a dry sump arrangement on the VQ?:zlove:

 

nah i hadnt, ive assumed that they were getting blocked up from use.. everything else checked out fine on the motor