Looking for advice on my KA-T build...

[AZhitman]

Look into shimming the pressure relief valve as well.

Tell me more, Cory.

[Florida240sx]

Ordered high-volume oil pump today as well - Added insurance....

From??

[nissanfanatic]

When you are installing the oil pump, there should be a small valve. It contains a spring that holds a ball into a socket. That keeps oil pressure from going too high. If you put a washer behind the spring, pressure raises a little. It would be best to ask someone who has done this tho as I speak only from what I have read.

[AZhitman]

Interesting... Anyone else have some insight on this "ghetto oil pump" modification?

Got the 2nd engine out of the car this weekend, so now both engines are at the builder's place... He'll have 2 of everything to choose from.

Planning on picking up the studs, gasket kit, water pump, oil pump, and other misc stuff this week.

Still keeping an eye out for a Z32 MAF and some 50-lb injectors...

[slipnfall]

You are supposed to retorque head studs, even OEM ones.

Just to avoid confusion, you do mean *only* studs, not head bolts(stock KA's) right? You don't want to retorque torque-to-yield bolts

[AZhitman]

Well, what sort of turbo are you running? 220-240whp on 7-9psi is a fairly small one.

Also, your rods won't break or bend at that power level.

One last thing, too: stock KA24DE compression ratio is 9.5:1, not 9.0:1

Wrong, wrong and wrong.

Turbo I'm running is fairly large, see specs elsewhere in this thread.

Rods can fail at 200whp - Seems they're actually one of the "weak links" in the KA (the more we look at it).

Stock KA24DE CR is actually 8.6:1. (see below)

Apparently, I ordered HIGHER compression pistons (9.0:1).

Oh well. More power.

[slipnfall]

Wow, really? I always thought it was 9.5:1... don't know where I picked that up...

[slipnfall]

Whoa whoa whoa...this is from my "91-94" FSM: looks like they must have carried over the CR from the older KA24E advertisement...
Modified by slipnfall at 11:29 AM 2/22/2006

[Craving4Boost]

it is 9.5...8.6:1 is impossible unless they were planning to go turbo.

[Florida240sx]

Def 9.5 Ain't going to have the Ka torque if it was 8.6

[AZhitman]

Scary - That's a scan right from a factory brochure... Big Nissan screw-up!

[fiznat]

Yeah Greg, compression is definitely NOT 8.6:1. My FSM also states 9.5:1, and I'm much more inclined to beleive that over that Socal clipping. Besides, 9.5:1 makes more sense for a NA motor like the KA.

[AZhitman]

Started on the build today...

Mainly, disassembled the original motor completely so the block can go to the machine shop... All surfaces are flat (to .001) and the bores look fantastic. Block is on a pallet and going in for machining next Saturday.

Crank will require polishing.

New rods and pistons are beautiful... I sat and marveled at the intricate detail and workmanship for quite a while...

Also, this engine's gonna have some "bling" - Polished the t-stat housing, the front upper cover, and a few other parts to a chrome-like luster. Will post some pics next week.

Buying a plating kit from Eastwood to re-plate ALL of the engine's fasteners with zinc (which can then be polished as well). Should be here in a week.

All in all, a productive day.

Next Saturday, we're disassembling motor #2 and doing some more polishing / painting / plating.

[white90esex]

I dont want to sound like an ***, but its pointless to even get new rods, bearings, pistones, valves, new gaskets, all that exspensive *** usless stuff for driving your car 2000 miles a year at 8psi.

You can run 12psi safely on stock internals if you dont drive it like a complete idiot taking it into redline every time you shift.

I drive my car a good 2000 miles a month and for moneys sad I would just say to go with stock internals, get an FMU, booste it, intercool it, and run 8 lbs safely like that.

Ran 5psi with no intercooler for a good year and a quarter till we turned it to 11 psi and then there was accouple problems because the fuel management system was poor, no intercooler, and to tuning

She made 226 HP and 257 lb ft at the ground at 7 psi. Id say thats pretty deas.

Your choice though, if you aint countin numbers you should send a few my way and give me a hand. Other than that If you REALLY want to trow down the bills go for it, im happy for you that you can waste money on a pointless goal of 2000 miles a year......

[Florida240sx]

Maybe you haven't read the thread.Eventually he is goign to up the boost. He isn't goign to make it a track car.But it may a couple years down the road. He is covering everything to prevent the engine from blowing.Only thign he can do now is is mishift. Other thna that his engine will hold liek a champ. Read the thread before you tell him your opinion. If you got to rebuild and engine Why not spend and extra $500 to get a solid built motor???

[white90esex]

LOL, first of all there are 4 pages of complete rambeling of people asking eachother were they got their stuff and other useless garbage.

Another thing is it isnt only going to cost an extra 500 dollars. Im actually going to start building up a Twin Cam KA myself to handle... well i dont know how much boost but im getting forged internals, upgraded fuels system, and tuning featuers.

Ive allready got what I want planned out and its going to cost me sevral thousand dollars to do it right and make a car that can handle 15 psi on a regular basis.

Oh yeah... if YOU would look at the name of the tread you would see that its clearley says... "Looking for advice on my KA-T build" .... so STFU.

[thekage]

Haven't seen it mentioned.. Don't forget the Colder Thermostat...http://www.courtesyparts.com/M...149DF

[nismofly]

Ive allready got what I want planned out and its going to cost me sevral thousand dollars to do it right and make a car that can handle 15 psi on a regular basis.

psi means nothing without the specs of the turbo

i know several cars that can make over 350 rwhp at 10 psi, i know others that are making less than 200

[AZhitman]

If you saw my car, you'd see why I want to do it RIGHT. It's not only a fun driver, but it's also a calling card" for 240sx.org.

2000 miles or 10K miles, there's nothing pointless about having one of the nation's sweetest S13's with a super-reliable engine.

Just because yours lasted for the past couple years doesn't mean they ALL will.

kage - Got the colder NISMO t-stat and cap already. Koyo radiator with dual Flex-a-Lite pullers and cooling panel... cooling is handled.

[white90esex]

Is urs that black 91-94 convertable thats on the top of the page ever so often?

If so..... That thing is CLEAN!

dont know whats so special about it cause you make it sound godly... well it will be soon ..... but anyways, unless its got less than 40k on the odometer and theres not a scrath on the original paint or a blemish in the windshield then it aint that AWESOME and godly.

Either way if it is your car its clean and I wouldnt want to drive such a clean black car myself.

My car is really really really clean but with 131k on the odometer its almost sadining. I got one hell of a deal though cause the interior, and paint are perfect and it was only 3400 bucks. Only downside is a oil leaking (now knocking) automatic single cam engine.

Anyways, keep it up with the CLEAN 240s!

Hope ur project goes good, I hope mine does cause ive never rebuild an engine and im planing on doing EVERYTHING myself.

[nismofly]

thats his car

i know where hes coming from with the overbuild

no matter what its purpose every car i use for "fun" will be built like a track car, just like this, sparing no expense on reliability

mine had 70,322 miles on it when i bought it, for a mileage comparison, ive put around 10k on it in 2 years and 2 months...i only plan on running turbo on stock engine for less than 10k before tearing down an engine with less than 90k miles for a full rebuild

[AZhitman]

That's an old pic of my car.

Here's a newer pic, and I'm doing something comlpetely different with the body (it's all disassembled - again).

Black paint is perfect, almost no scratches, original and glossy...

[AZhitman]

Started disassembly of motor #2 this past weekend.

Whoever rebuilt this one needs their tools taken away - Pathetic.

I'd also like to kick the piss out of the guy who sold it as a "fresh rebuild"... Yeah. Full of stop-leak and with a crack in the head, poorly welded.

Anyway, things are coming along nicely and we're making (slow) progress.

I promise pics next week.