T3 on CA18DET?

[themadscientist]

even if that was true that's not worth the expense at the power level you are going for.

[Gisqc1]

Well then u mean its totaly not worth it, cause its the tubular manifold that makes you loose the spooltime.. dunno by how much tho!

[themadscientist]

no, I mean you are doing what just about everyone else here does, concentrating on flash parts and wasting money. YOU ONLY WANT 300 HP!

Do a good rebuild with quality machine work, by this I mean.

hot tank the block

bore and hone to your pistons

have deck checked and corrected if needed on both the block and head

check the valve guides, likely replace them, bronze is nice but not required

if you want a braggable part get some rods, not required for 300 but not a waste either

go with some nice pistons, braggable and lighter, take some rotating mass off

have the whole set dynamically balnanced so it spins with no vibration

new oil and water pumps

stock cams are fine for 300hp, 256 would be better, 264 a bit too much

adjustable sprockets and have the cams degreed straight up

stock timing belts are fine if changed regularly but a kevlar on is good insurance

new oem gaskets all around with a metal one on the head for a little extra

ditch that ****ing 20 year old computer and get a standalone. (yes boys and girls, the CA18 computer is TWENTY YEARS OLD. the AFM is tiny and restrictive, it has a boost cut, a speed cut and the processing power of one of these!)

Now get some fuel, a 255 walboro drop in pump and at MINIMUM so clean 550s but 600s would be better, stock rail with adjustable regulator.

Keep the oe manifold and slap a nice actuated T28 on there with a nice FMIC and real BOV. That's my way of saying the tweetybird BOV is a joke.

full exhaust with a tubular outlet on the turbo and tune it out.

That flash manifold is money for the fuel pump, potentially the regulator.The smaller ports in the oe manifold fill up quicker and will thusly spool the turbo quicker but will choke at higher RPMs (read sustained WOT like drag racing). You and about a million other people care about that, I don't. A tubular manifold is good for me because I do mostly roll ons and top speed work where lag is not noticeable at all. I also lean towards larger turbos that are in their element flowing at the top rather than around town drivability.

[Gisqc1]

Wow i never said i wouldn't do any of these mods... i already know what i want there so no point asking ! I've read enough on Ka-t to know that fueling/tuning is a must.

I was actualy planning to get a megasquirt for standalone, exhaust fuel pump and injectors of course... z32maf

But i'm not sure about all that machine work... that's a good bunch of money... i've read that the stock motor can take 300whp (probably gonna make less more in the 275wrhp range) so will all this expense be justified? Not looking to cheap out on everything, but don't wanna spend where its not needed. Why making it able to rev higher if ur turbo cant keep up in the high rpms? Having a fully rebuilt motor and only running 275 wrhp sounds like a waste... i would just rather put something bigger to use that potential.. but i doubt i would need it!

Guess my questions just makes me sound like everyone else...

[themadscientist]

well for me IMO I would get in ther and sink the money into making your foundation solid. The build I described should do you up until over 400 with just a cam change That way when you want to start ratcheting up the power you don't have to touch the longblock, just pull the turbo and manifold, swap cams, go big on the fuel.

[Gisqc1]

Ya i get ur point on that, but i don't really wanna go bigger... on street use only, theres no point (well for me) in running over 300... and i sure won't buy a turbo twice and injectors twice, either ill go small now or big now, why paying twice in the end?

Guess i should also add i never opened up a motor, and rebuilding it seriously scares me

[float_6969]

The lag on that big ***** T4 was barely noticable, T3 would be fine. A nice ar .63 housing should spool well.

That looks familiar... Oh yea! Its in my garage!

[themadscientist]

You will nut your pants the first time it spools up, the 50 trim E is a great turbo. You get that manifold extrudehoned yet?

[float_6969]

No, I have this engine i bought I'm hoping to get shipped over here