ka-t cams!!!!

[240man91]

ok to start out i have been puting together a ka block for a bit now an have came to the cams ani am un sure of what size valves to go with so i need some help from the guys that have been down this road. Here is my bulid break down so far.

I have wesco forged pistons manly hand filed forged rings, eagle h-beam forged rods arp rod bolts new stock crank acl bearrings. Bottom end has all been machine balanced. Block has been decked an the it has been bored .020 over to. Ok now for the head, i have bc 264/264 cams coming for it with titanium seats, retainers an dual valvesprings, but i dont know what size valves too get. They will be stainless steel, any help would be sweet. Oh an i am going to be running 810cc injectors with a 340lph fuel pump all on a rom tune. looking too run 18psi on this motor. I hope this is enouf info if just ask, i am looking for 400rwhp.

[240man91]

oh! i am running a tdo-5 18g tubo, it is a 57trim

[240man91]

any one?

[240man91]

Dam alot of people have looked at this an no one has any input?

[S133P3R]

I wAs mislead by the thread title and thought this was information on cams. Question marks may have helped here. I would suggest looking over various build threads or seeking the advice of a local tuning shop.

[Promise Land]

I continually hear the KA head flows well from the factory, so why go bigger than OEM with a clean-up job done? 400hp is feasible with stock valve sizing.

[S13_RB25]

Im not KA-t yet but i always planned that I was gonna run .5mm bigger valves on the exhaust side, leave the intake stock. That way the motor will breath easier and will help the turbo spool a little faster! Hopefully someone else can chime in on that lol! =)

[Razi]

Well if you want the turbo to pump more air into your engine and for your motor to breath easier, wouldn't you want to get larger intake valves too?

[WDRacing]

No need for bigger valves. Total waste of money...total. There are guys making over 400whp with the factory cams and head.

Invest the money somewhere else is my best advice. If you do buy over sized valves, there aren't a ton of options iirc.

[240man91]

Thanks guys i went with .5mm bigger an i am running the bc 264/264 cam kit so over size did cost me any more then the stock ones would have. An as for the guys putting out over 400whp with stock head hope it last, the reason fo larger cams is so you can make more power with less boost.

[s13drifter88]

It's not necessarily more power with less boost but to make more power period when the stock cams become restrictive to the engine. Same reason we replace small hair dryers with big leaf blowers. Small turbos can only move so much, throttle bodies can only flow so much and manifolds can only feed and expel so much.

[sunnys14]

No need to get bigger valves for a 400whp or less setup. It's been proven for years that you can still make power on stock head.

[s13drifter88]

stock ka head can make some really good power. with an 18g you may want atleast a 248/248 setup though but some drop in jwt's would be nice but no need to build the whole head. maybe spings if you plan on bigger than stock cams but theyre not entirely necessary for the drop in sticks, just added help

[240man91]

Yeah. I wrnt with bc 264/264 cam kit with over size valves. Well worth 1200 bucks an with may 820cc injectors an the jwt tune this car runs like crazy.

[240man91]

The car runs great!! I have more power with just a headder then i did with my t25 setup. I havent put the turbo on yet breaking it in na frist. But a small bore an cames an a tune pluse injectors. The car is quick caint wait to put 18psi to it.

[neverlift]

its the cams

[240man91]

Yeah and cause its bored .020 over

[neverlift]

no, its the cams. boring a ka yield little gain.

[240man91]

Yeah well i hope its mostly the cams haha. Cause i payed 1200 for them pluse 500 to have them put in.

[s13drifter88]

Cams are neat man, they havr a funny way of waking an engine up. I have Tomei's in mine

[neverlift]

you paid what for cams? how?

man that really put me off cams, I see them listed online for like 400~700ish was that the valve work and springs etc..?

[240man91]

I got brian crowder 264/264 cams .5mm over size stainless steal valves, and dual titanium springs with titanium seats an retainers.

[neverlift]

oic

[S&C cUSTOM rIDES]

Very misleading thread. Is this engine you are building in a street car? Are you running under 400hp and 410tq? My experiance has been running stock internals on my sons 240sx with 380hp with no problems. He has put over 35k miles on it with no problems other than a fuel pump. The engine you are building is awsome and exactly what I am looking to do only as a weekend warrior as I worry about the reliability. What are your hp and tq goals and will this setup be reliable? The only difference I was looking at was 272 cams but I think your 264s might be a better choice. Can you tell me more about your setup and goals for this build please?

[240man91]

Yes this set up is a strong set up it could handle 20psi all day every day. An my power goals is just 400whp an tq never realy mattered to me. But i could run 30psi on the track an get around 500ish whp out of it with out killing the motor but the motor is not broke in enouf to take it to the dyno an play with it for a day. Are you running 380 every day out of yours or only in hi boost? An the cost of this bulit i have was a little more then 6k but i bulit the lower end myshelf.

[240man91]

An yes this a car i drive everyday on the street. An still get around 25mpg

[S&C cUSTOM rIDES]

Yes this set up is a strong set up it could handle 20psi all day every day. An my power goals is just 400whp an tq never realy mattered to me. But i could run 30psi on the track an get around 500ish whp out of it with out killing the motor but the motor is not broke in enouf to take it to the dyno an play with it for a day. Are you running 380 every day out of yours or only in hi boost? An the cost of this bulit i have was a little more then 6k but i bulit the lower end myshelf.

That was probably under high boost on the dyno pulls. I think he runs it at 15 normally not sure what he sets it at when he goes on his midnight runs with his friends. I know hid friends coupe pulled 650 on the dyno but it had all the bells and whistles and it hasnt seen the roads legally. Sounds like your setup should easily hit 550, Keep us posted on the results.

[240man91]

Ok will do.

[240man91]

heres some pics of my bulid.

[s13drifter88]

my Tomei's were $500 before my Tomei valve/spring kit. it only cost me a grand total. that sure sounds a little high... where did you order from?