KAT build up instead of RB? Perhaps ;)

[Nathan]

Well, my RB25 clip just fell through (low compression) and there are VERY few available in the US, none of them available now...I would very much like my car to be running within 6 weeks and I am thinking strongly of doing a KAT buildup. To get the RB25 how I wanted it I had the price worked out to about 5500. I think I can do a KAT for about the same amount, here's what I was thinking:

Engine and Transmission: 750Ross Pistons: 489Pauter Rods: 689Turbo: 700Wastegate: 300Exhaust Manifold: 400Machine shop work (clean up, bore, hone, valve job with guides): 400S-AFC II: 280300zx 370cc injectors: FreeFuel Pump: 100Clutch: 300Exhaust: 300Headgasket: 100 (stock one should work for what I'm doing)Fuel Pressure regulator: 100Incidentals (bearings, bolts, random crap): 400

This puts me at: 5308

I would tune it on a dyno and up the boost until I got to about 90% duty cycle on the injectors and call it quits. I'm guessing it'd be 11-13psi. Oh, and I forgot to mention...I allready have a fmic, bov, vlsd, and 300zx MAF. I've searched and read up on the KAT and I think it's doable for this much if I do the labor all myself. Thanks for the opinions I'm sure are to come

[SingleCamSam]

Why build the bottom end for 13psi?

[Nathan]

Because I want things to be like new...I want to know the full history of the engine from the time it was put together on...call it insurance if you will

[TurboKA37]

yes that will work nicely. what turbo do u plan on using?

[scotty-2-forty]

http://www.nissaninfiniticlub....29301

[Nathan]

No offense scotty...but I'm to the stage where absolutely nothing has gone right with building the car...so I just want to do almost all the work myself and start over with a fresh engine that I know the history of. Besides, then when I screw up I can only blame myself TurboKA...I havent decided yet but I'm going to start looking at T3/T4's and see which one meets my needs best And I'll read the threads on turbos on here!

Edit...Do you guys think this thing could at least be running NA within 6 weeks if I ordered all the parts on monday and picked up a new engine and transmission this weekend?

Edit again...I looked at turbo's and read a bit on here...I'm thinking: T3/T04E 57 trim .60 A/R compressor side with .63 A/R Turbine side with stage 3 wheel. Basically, this: http://store.yahoo.com/cheaptu....html with the 360 degree thrust bearing upgrade. I dont know what the wet bearing upgrade is, does anyone know if it means it is also water cooled? If so I'll do that as well.I think it'll spool reasonably quickly and give me the power I'm looking for with a little room for expandability Oh...and best part...even with upgrades it fits in the budget

[TurboKA37]

yes thats a nice choice. what kind of hp are u looking for? ive read that some people on these forums that use the same turbo wish they had gone with the 50 trim for a lil better spool up.

[Nathan]

Well, I think one of the limiting factors for now is the 370cc injectors. I think that by raising the fuel pressure I can MAYBE get 300hp out of them but I am not certain, it'll have to see what it can do while being dyno tuned. The reason I was considering the 57 trim over the 50 is because I didnt think there would be a sizeable enough difference in the spool up to matter and the 57 would give me just that little extra if I decide to upgrade the fuel system more down the road and go for more power.

Another question: Does anyone have an opinion on ETD racing? They have a nice manifold at a good price, they also offer rods at what looks to be a VERY nice price, I'm going to e-mail to verify that their pricing on the website is accurate...but if so...under 500 dollars for forged rods would be great.

[huguetpj]

This is why I went with the 60 trim.

http://www.geocities.com/hugue...n.htm

I believe the 50 or 60 trims are a better choice because of a better eficiency island. I went with the 60 cause I think it's just a bit better, and it'll help me when going to higher boost.

[Nathan]

Wow, I hadnt actually looked at the maps (yes, I know I should have ) The 50 trim has quite a nice efficiency island and is probably what I will go with Although the 60 trim is nice too...so we shall see. When does the boost really come on for you?

[huguetpj]

The boost will come on in about 2 weeks ... actually I've been saying that for the past month

Anyway, I believe PornFlakes was the one who told me that he gets 6PSI by 2.5k rpms and full boost - don't actually remember the #s but I know it's more than 12PSI - by 3.5k, which I believe to be great. He is using the T3/TO4E 60 trim. If I'm not right I'm pretty sure he'll come in and correct me.

[Nathan]

I hear ya on when the boost will come on...I dunno if you've heard the debacle I've gone through...but it was all supposed to be running with a built CA about 3 months ago...then an RB within a month from now...and now god knows when, I'm hoping quickly...I'm looking at an engine on saturday and I'm hoping its what I'm looking for. Yeah, that 60 trim sounds like it'd work pretty well. I'll talk to a few more people but it'll probably be that or the 50 trim. Thanks again for the help.

[huguetpj]

All the best of luck to ya, it just takes patience :pface

[Nathan]

Thanks I'll keep everyone updated on how it goes Oh, and that ETD racing manifold wont be done until winter...and they dont have eagle rods for the KA.

[fredb]

If your goals are only about 11-13 psi that will only put you somewhere around 275-300 hp, maybe a little more. The stock bottom end has been proven to be good for about 15psi and around 350hp Why don't you just put in some nice new stock rods and pistons if you want to know the history of your engine internals? That'd save you quite a bit of money.

my thoughts,fredb

[Nathan]

Yeah, but why go halfway? I can afford to go forged and it provides peace of mind...so I'm just going to go for it Besides...I have a nice stock rod...here it is: I dont have a lot of faith in the stock rods after seeing the way that one deformed when it was thrown. Look at how the rod cap is actually folded over on itself...the rod is snapped in half, and at the small end it is bent about 30 degrees

[Nathan]

I just got my motor back from the machine shop and I thought I'd give a full update on how things have changed and what everything has cost me now:Engine and Transmission: around 750 from a junkyardRoss pistons: 499 shippedPauter rods: 750 shippedTurbo: 650 (Garrett t3/t04e 50 trim compressor, .63 a/r stage 3 turbineWastegate: 150Manifold: 650 shipped, IAP equal length.Machine shop work: 683 (bore, hone, deck block, check main alignment, clean, balance, assemble, new bearings)Engine Management: 500 jwt ecuInjectors: 240 (72lb. delphi)Fuel rail: 130Fuel Pump: 110clutch: 300flywheel: 300Fuel Pressure Regulator: 130random clips, resistors etc for injectors: 20Intercooler: 320Oil lines: 90

This is all the stuff I have bought so far, the total is: 5972 and I haven't gotten an exhaust or intercooler piping yet. The guages are also not in that total. Let this be a lesson to ANYONE who thinks they will actually keep things within the budget I anticipate the total coming out to around 7000 to have a running, well built 350whp KAT.

[90lkn4swp]

sounds great nathan thank you for going KAT now i finally i have a list i can work off of

if you dont mind my asking where did you get the pistons and rods that cheap?

also are you going to go with some suspension/wheels/tires/brakes etc... or do you already have those installed?

[Nathan]

I got the pistons, rods, mani, oil lines, and fpr from http://www.import-autoperformance.com they have fair pricing considering the prices are shipped and offer NICO discounts on some things. Not to mention, Marc's a really nice guy. I will be going with a brand new set of tires (yoko es100's) when I get everything running hopefully in a couple weeks. No wheels, and the brakes were freshly done so I'm going to wait to wear out what I have...same goes for suspension, if it wears out I'll upgrade which probably wont take long since the dust boots are gone and it looks like all stock stuff that I know has taken a beating. When I do upgrade suspension, it'll be to suspension techniques springs and sways with agx struts and possibly custom strut braces of my own design.

[WDRacing]

Your movin in the right direction Nathan, just somthing to think about though. I didn't see anything to retard timing. I suggest the MSD BTM. Having fuel is one thing, running the NA ignition map under boost is a bad idea.

WD

[C-Kwik]

He is planning to use the JWT ECU.

[KApwr]

Looks good Nathan, keep us posted on your project. BTW, what fuel rail did you end up getting? I've heard that the ones available for the KA don't fit worth a damn. Anyways, keep up the good work.

[tl1000sga]

Nathan, Where does the manifold you got position the turbo? Oh, and does it allow the A/C to stay?Thanks

[Nathan]

It's the one from JGY customs, which is where I ordered the ECU from as well (it's cheaper, 500 instead of 600). I haven't test fit the fuel rail yet but I'll be sure to tell everyone if it doesn't fit right! WD, read the list of parts I allready have ya dunce

[Checkered-Member]

NathanInstead of JWT ECU consider (well at least don’t rule it out) greddy e-manage. Here is a good resource link: http://www.mohdparts.com/emanage/index.html

[Nathan]

Dude, people...read the thread, I've ALLREADY BOUGHT AND PAID FOR the parts listed in the update post. Here, I'll copy and paste them so you can see again. I thought I'd give a full update on how things have changed and what everything has cost me now:Engine and Transmission: around 750 from a junkyardRoss pistons: 499 shippedPauter rods: 750 shippedTurbo: 650 (Garrett t3/t04e 50 trim compressor, .63 a/r stage 3 turbineWastegate: 150Manifold: 650 shipped, IAP equal length.Machine shop work: 683 (bore, hone, deck block, check main alignment, clean, balance, assemble, new bearings)Engine Management: 500 jwt ecuInjectors: 240 (72lb. delphi)Fuel rail: 130Fuel Pump: 110clutch: 300flywheel: 300Fuel Pressure Regulator: 130random clips, resistors etc for injectors: 20Intercooler: 320Oil lines: 90

This is all the stuff I have bought so far, the total is: 5972 and I haven't gotten an exhaust or intercooler piping yet.

Please dont suggest any thing that is a replacement for something I have allready bought because well, I couldn't care less I did my homework and I bought what I did for a reason: I do NOT want to do any kind of tuning myself and these were the things I felt were necessary. I only intended to bring this thread back to life so maybe some people considering a higher powered KAT project could have some idea of the costs incurred as well as the fact that budgets will NEVER be exact.