Lopin`s Ka24e-t Building

[Lopin18]

8) Well well, today i did..... nothing :P they did all the work, took pictures of everything, dont mind the mess, and the custom weird things :P, btw the manifold looks great, i was wondering about the penetration but since this guy has made tons of manifolds before without cracking.... im trusty, (toyota 20v engine revving over 8500rpms and not cracking from drifting like that? **** it, its a job well done xD )

dont mind the nasty *** head and engine and car and everything.......

Hmmm we WERE gonna make the int wastegate open dump, but since the machine shop didnt do the whole ill just forget about it, gonna weld a pipe in the "wall" or whatever that ull see in a pic.

still missing inyectors, oil return work (its easy...) fuel pump, but thats just ask, pay and install :P

Everything custom fabbed!

pics pics pics

Manifold/Engine Flanges

Log manifold almost done and the downpipe wall

interior of the log style

SO CUTE!!!

Oil feed line!

Oil Restrictor

my second engine

my car and my engine storage room

[Lopin18]

btw im a lil scared of blowby, what is it all about? how to detect, fix, avoid...

[driftin_sr20det]

Please tell me your rebuilding that thing before you throw a turbo on it. Because if you have worn rings, you're sure to have blowby.

[WDRacing]

There's a thread in here that expalins in depth about crankcase ventilation and blowby. Basically all LAT's suffer from it because the stock PCV and CCV system aren't meant for a boosted engine.

Keep the updates rolling on the build. I love seeing guys build the SOHC up.

WD

[Lopin18]

Well as i said my engine (not the one on the picture.....) was compression tested and it gave 150-150-151-150, been drifting it and ive never had any weird problems. ill be rebuilding the other 2 engines, meanwhile ill taste the boost for a lil bit :P

Today im gonna take pics as i got a new intercooler and gonna assemble everything today.

how can i detect blowby, also is the hole on the valve cover in relation with crankcase ventilation? cause since a while i opened that hole and its vented open air, and i can feel light pulses of air comming out of it...

Wd, help! so the current new issue i wanna get some knowledge about is Blowby, i read pcv valve works with vacuum (after boost theres none so i lose the PCV valve function) so WD, plz refer the SOHC PCV system thread to me i wanna fix this PCV thing before i complete the build.

Modified by Lopin18 at 6:00 AM 11/3/2008
Modified by Lopin18 at 6:21 AM 11/3/2008

[nelson8708]

Do a cylinder leak down test to see how well the cylinders are sealed. As long as they are not super bad i really wouldn't worry about it. Unless you plan on running upwards of 12psi on a motor with crap compression and poor leak down test results i wouldn't worry. An easy way to setup a simple pcv setup would be to Y together the valve cover breather tube with the pcv box and run them to the turbo intake at a 45 degree angle and have a oil catch can in between the Y and the turbo intake so you dont gum up the turbo. I just keep my system stock with the breather tube going to the turbo with no catch can for now. I dont really run enough boost to worry about it yet.....but i plan to by the end of the up coming season .

If you really want to learn more about pcv systems check out homemadeturbo.com.......Since we have a mafs system ours will be alittle different....(cant run everything to a breather filter and call it good.)

Edit:I feel like being nice + i'm bored. I took this from HMT but, made a few changes to the way they had it setup. Just make sure if you use this to have the 45 on the turbo intake after the mafs.



WD...anything i missed? It seems to me like a lot of people make this more complex than it really is or needs to be. I think unless you are running a lot of boost that your stock pcv system is fine as long as it function-ing properly and not all gummed up.
Modified by nelson8708 at 7:43 PM 11/3/2008

[Lopin18]

I recommend this lil thing nelson did to go to a sticky somewhere, im not even near the engine nor i knew anyhting about pcv and even in that situation i managed to understand it all clearly in a snap! Turbo sucking is the vaccum that actually sucks pcv valve into working right? oh well, i just know i know how to do this stuff now Thanks man

[nelson8708]

There is actually no one way valves in this setup (or the stock pcv valve for that matter). You need to put a vacuum on the crank case when you are in boost more so than cruising. So when your in boost the turbo creates a small vacuum and would pull any pressure build up out of the crank case. The important thing to to have a decent size line going to the turbo inlet becase the vacuum is not great you need to have low restriction through the system, just incase you have a lot of blow by the pcv system can handle the volume. I plan on using 1/2" line when the time comes.

[Lopin18]

ahhhh damn....

Blew 2 headgaskets on the dyno, the head was decked so we thought it was them block, the engine was working GREAT, so smooth.

We tore it down to find piston rod #3 bent, piston ringlands #4 broken, its amazing that the engine didnt show any signs on the dyno...

178hp at 7 psi on a rb20 turbine headgasket crapping, changed to a new crappy headgasket to test, 180 hp at same 7 psi, then we went 16 psi lol, giving 187hp @ 3000 rpms climbing then at 3000 we cutted the gas as the headgasket started leaking again there

Oh well, im buying eagle rods, wiseco pistons, acl bearings stuff, arp stuff, balblaba.... :S damnit...