KA-T Setup

[JRex]

Well after going back and forth between KA-T and SR I think I've decided to try out my luck with the KA. Motor has roughly 155k Miles. So I was going to go ahead and get a Felpro head gasket, ARP studs, FRsport timing chain kit, and possibly a new oil pump to freshen it up. Or should I try and fine a lower mileage motor first? Trying to refresh my memory on everything.

Shooting for roughly 250-300whp, nothing ridiculous cause it's my DD.

t3/t4 or rb25 t3 flanged t28eBay manifold440cc DSM Injectors? (opinions?)walbro 255lph fuel pumpTial 38mm w/10psi springEVO BOVJGS feed and drain line kitZ32 maf (necessary?)FMIC3" Downpipe to Apexi N1 exhaust open / wastegate dumpEFI Specialists ECU

[RunninMeBrokeS13]

Well after going back and forth between KA-T and SR I think I've decided to try out my luck with the KA. Motor has roughly 155k Miles. So I was going to go ahead and get a Felpro head gasket, ARP studs, FRsport timing chain kit, and possibly a new oil pump to freshen it up. Or should I try and fine a lower mileage motor first? Trying to refresh my memory on everything.

Shooting for roughly 250-300whp, nothing ridiculous cause it's my DD.

t3/t4 or rb25 t3 flanged t28eBay manifold440cc DSM Injectors? (opinions?)walbro 255lph fuel pumpTial 38mm w/10psi springEVO BOVJGS feed and drain line kitZ32 maf (necessary?)FMIC3" Downpipe to Apexi N1 exhaust open / wastegate dumpEFI Specialists ECU

looks good few things i would change would be the ebay mani. it will crack and you will run into problems with break clearance. also z32 isnt necessary for 300 hp an n60 would be fine for half the price they are good to 350ish hp. the dsm injectors would work but keep in ind you would have to convert to top feed and wire in a resistor box. imo plug and play side feeds would be easyer.

[JRex]

I'll look into some other manifolds. So I can skip out on the z32 MAF and get away with a stock one or should I still get a N60? As far as injectors what do you suggest? Some 550 or something? I was only considering the DSMs cause they are cheap. But I guess not worth it after having to change the rail and such.

[Elbowblk]

stock maf maxes at around 260. i dont see a problem in running dsm injectors. 440cc should be okay for that range.

[JRex]

Oh ok. So I guess I'll go ahead and get a different MAF. But I think I'm gonna go with some injectors I can drop in.

[GTR PrYdE]

Your plans are very similar to what I have, which have been great to me.

+1 on ditching the ebay mani, I run a JGS and love the piece of mind that my mani will never crack!

z32 mafs go for around 100... I'd go ahead and get it- headroom for 500whp...

the injectors should be fine, you'll have to run resistors I believe, but they should be good for your power goals. I went with DW550's and are very happy with them.

PS- make sure you get an Evo IX metal BOV- they are awesome! (evo8 bov's leak like crazy)

[JRex]

Only reason I don't want to get a JGS manifold is the price. Do you have just a stage 1 kit?

I think a buddy of mine actually has a z32 MAF he isn't using so I may just go ahead and pick that up.

I'm gonna keep my eyes open for some DW550s cause I don't want to have to change the rail cause it would probably end up costing the same as just buying some 550s.

[GTR PrYdE]

Personally,

I had a Project Nissan Fuel rail/Evo 8 550cc injector's/JGS resistor setup, which I had for about 200 bucks, and I sold it all because I thought my POS emance tune couldn't control them. It turned out to be a severe idle issue- but regardless, that setup would've worked great had a just switched tuner's earlier.

BUT... it doesn't get any easier than dropping injectors from DW...

I don't run a JGS kit- only their mani/downpipe/wg dump/oil line kit

[240sxvaj]

DW injectors are good but they tend to have around 2% error in flow compared to something like Nismo/tomei injectors which have about 1% error(correct me if i'm wrong). it shouldnt be a problem for efi specialist to tune for it but usually they warn you for using those injectors. However i ran 450cc DW without a problem so its just something to keep in mind. now i'm 740cc Nismo.

Your best option is JGS manifold, they are proven to work under heavy driving conditions.

Just make sure you recirculate your BOV or blowthru to prevent any stalling issues. I got away without recirculating it but some people dont.

Get a walbro fuel pump while you're at it, make sure you have good amount of fuel going to the injectors. the other thing is you would have to upgrade your fuel pressure regulator to compensate for the high flow pump. my stock one crap on me after a month.

[JRex]

I actually mean the JGS stage one manifold. Not the whole kit. haha

Defiantly getting a walbro, don't know how I left that out. I'll add a FPR to the list as well. Thanks for the info.

[RunninMeBrokeS13]

Only reason I don't want to get a JGS manifold is the price. Do you have just a stage 1 kit?

I think a buddy of mine actually has a z32 MAF he isn't using so I may just go ahead and pick that up.

I'm gonna keep my eyes open for some DW550s cause I don't want to have to change the rail cause it would probably end up costing the same as just buying some 550s.

the dw injectors are iffy to me man. check out power enterprise side feeds they are a little bit more but they have good customer service if you ever have a problem and a good warranty. after all this is your dd so you want it to be reliable.

as for the manifold. the jgs one is one of the cheaper ones. try to find one used from someone or if you have some welding skills you can buy raw material and make your own. thats what i did much more efficient that way, spend about 120.00 on materials and about 3 hours of cutting and measuring assembly wasn't to bad.

[RunninMeBrokeS13]

hey is your motor sohc or dohc?? i found this if ita sohc. though maby you'd be interested. http://www.ka-t.org/forums/viewtopic.php?t=45555 i have a feeling your dohc though.. worht a shot lol

[JRex]

Yea I am dohc.

I was checking out that JGS kit that you weld yourself. I will probably end up getting that one and making my own.

[RunninMeBrokeS13]

yea man thats what i did peek on zilvia or ka-t i see people selling diy mani parts all the time for dirt cheap. saw a hole kit with likr 40 peices for like 100 bucks with a flange and everything. just keep your eyes open.

[JRex]

I don't think I have actually ever seen anyone selling any DIY parts, but I'll search around and see what I can find.

[RunninMeBrokeS13]

yea look on ka-t i see it from time to time. just recently i saw one i'll see if i can find it for you.

[SpecD_240sx]

Hey, so I have no clue where to ask this, but I'm guessing this is the best place. I'm currently looking at going KA-T, but need a bit of insight as to if I'm heading on the right track. After doing some reading and looking this is what my idea is right now for a setup.

ISIS V2 Exhaust ManifoldCircuit Sports Turbo Lines Z32 MAF ISIS Front Mount IC Walbro 255lphISIS Downpipe HKS SSQV BOV Oil Restrictor SR T28 TurboSR Turbo Elbow??

Other than that I'm not really sure what else I would need. I'm guessing some sort of tune or a fmu, but I really don't know. I'm not looking for huge power, but something that will be good for drifting and will be reliable enough for a dd. I'm on a bit of a budget, but I'm not gonna cut corners. Any idea's helps me out.

Thanks

[silverkaturbo]

Well, youre kind of in the right place; prob shoulda started your own thread instead of jackin Jrex's though. But anyway

You're prob gonna wanna add a better fuel pressure regulator to the list; I here the stock ones cant handle the walbro pump for long.

Also if you're planning on running stock injectors the z32 mafs will be overkill since the stock injectors will most likely be maxed out way before the stock mafs. Im running 370ccs and a t28 still with stock mafs, and even at that i would only need to upgrade to a n60 mafs.

If your turbo is ball bearing make sure you get the smaller oil restricter, .030 something or other rather than the .060 something or other.

And as for your "sr turbo elbow??" comment, yes that will work. If you want a cheap stock one I believe I still might have one, but i would suggest getting a better one. Stock ones are cast heavy and all sorts of lumpy on the inside; horrible start for exhaust flow.

For tuning I believe a fmu will suffice with stock injectors for around 7psi, you guys can chime in if im wrong.

[SpecD_240sx]

Thanks for the advice. I'll stay with stock MAF, I'm gonna plan to get either the Greddy e-manage, or the e-manage ultimate. I know the ultimate is more than I need, but if i decide to go top mount at some point it'll save the fuss. I take it i should just buy an aftermarket sr elbow, and then downpipe, instead of the whole "used route". About the oil restrictor, for a t25 is a 0.60 good? and then if i decide to go t28 get smaller like you said?

P.S. Sorry Jrex for jacking your thread. Intentions are good.

[silverkaturbo]

You could get away with using used stock ones if you really don't want to spend the extra money on it, but really, you want as smooth flowing and least backpressure exhaust as possible so for the few extra bucks i think its prob worth it.

And yes .060 is usually good for t25. It really depends on your specific motors oil pressure, but that should do it.

[AE_Racer]

Has anyone thrown a turbo kit on a KA with 150k+ miles? I kinda want to skip the rebuild.

[SpecD_240sx]

thats what i'm doing, engine has roughly 160-170k, if you read threads around here, just do routine checks, and be sure your engine is running really good right now (no leaks, good compression, etc..). If it's not running right, then look for a different motor. If you got problems now, slapping on a turbo ain't gonna help any problems.

[silverkaturbo]

Yep, mine had a little over 180k. Compression numbers werent the best, but good enough. The only thing i had to do was replace valve seals to fix a smoking issue that was intensified with the addition of the turbo, no biggie though.

[lancet913]

I have 173,000 miles on mine and it handles 12 psi on a t3/t04e. It has great compression and no leaks.

[gingerbredman]

Definitely do a compression test. I'm almost to the 200k mile mark but fortunately I've got "backup" engines lol