13 second 240...help

[themeaningfulsn]

i am getting more and more speed hungry and i want to bring my car down to mid to high 13s with a ka24e. My first idea was to turbo it and run a high compression pistons and connecting rods but thats looking more and more expensive to get to the power levels i want. Another idea was a moderate turbo boost plus a 75 dry shot. Still undecided, and i want to keep it ka none of this jdm bull. And yes cost is an issue i don't want to spend a ridiculous amount of money

[Hijacker]

high compression pistons + turbo = blown motor if not careful.

do your research before getting "speed hungry". the amount of money needed to reach 13's might sober you up if cost is that big of an issue.

you could slap a turbo on the KA and do no extra work to strengthen it up and pull 13's, but you won't be able to do it for too long. go to your library and look up books on turbo chargers. A good one is Maximum Boost. I've read that book and it has a very good turbo philosophy in it.

[nnkfws333]

You can even go to howstuffworks.com I think and try reading up on turbochargers. It's not that detailed but gives you some great info.

[themeaningfulsn]

yeah i know how turbos work and everything. And i can hook up a turbo kit for about 500 with a used but rebuild volvo or saab turbo and intercooler and custom manifold and so on. I just want to be able to run 13s when i need to, so like on a daily basis i'd run a low 5 psi or so and when i race bump it up to 10 or 11. One fear of doing that though is blowing the piston rings because from what i have read many people blow piston rings once they hit 10psi

[Zydeco]

maby if they got 100,000+ miles on there car.

[GEO]

wait, i plan on going turbo in sring and having a 7-8 psi dialy driver. I mean, how long will this last for as a dialy driver?

[HIGHLIFE1]

if its properly tuned and maintained it should last a good while. but things break on cars its a fact of life, so don't get bummed when stuff goes wrong, it takes time to work the bugs out.

J

[themeaningfulsn]

alrite i think i am just gonna man up and slap on the turbo, but say a piston ring broke should i just get new rings or get new pistons

[Hijacker]

you you blow a piston ring, you'll need new pistons as well. i don't think i've ever seen an instance where the piston was reusable after a blow out

i am currently running 14 psi on my motor and I'm having no problems. I believe Nissan went ahead and put forged components in the KA (not 100% sure on that statement), so you should be fine on boost. The only issue you'll have is that KA's came with higher compression ratios, so your boost will need to be lower to compensate for that fact. Consider topping your boost cravings at around 7 or so. Droppin the CR will give you more headroom to work with higher boosts.

Things always break, especially when you tinker with them. Example: I just finished upgrading my fuel pump, but the o-ring blew out and stripped one of the bolts on my cover. Now I get the fun task of extracting that bolt AND retapping the hole.

[240SXer]

I hear about KAs breaking all the time with high boost. I wouldnt do more than 7psi if I were you. No nitrous. Do you want to make a single 13 second pass or do you want your car to actually last

[Turb0wned]

does your ka24e have alot of miles on it? maybe u should swap it for a low milage ka24de first...

[SHIEF]

does your ka24e have alot of miles on it? maybe u should swap it for a low milage ka24de first...

Not a good statement. Just stick with the E not the DE, that just seems like a wasted swap IMO. There's nothin like that extra 15 horsepower woo hoo. Find a E motor cheap, put some rings in it, hone the block, put some better valves, valve guides, etc., do a lil head work then you should be fine for 13's and be able to drive the car daily. Hell you can probably get into the 12's with good tuning.

[Hijacker]

also, another thing you'll have to consider in the KA-T route is spinning bearings. there's an increased amount of leverage on the rod bearings in a KA due to the stroke length, so it's easier to spin bearings. do some searching in the ka-t forums, those guys should be able to answer all your questions on turboing a KA

[SeVa-S13]

I hear about KAs breaking all the time with high boost. I wouldnt do more than 7psi if I were you. No nitrous. Do you want to make a single 13 second pass or do you want your car to actually last

High (20+) boost on a stock block probly isn't a great idea, but the block can handle up to 15psi safely, aslong as you have it proeperly tuned.

[themeaningfulsn]

nitrous is looking much more affortable and better...any opinions?

[Structure240sx]

either turbo or nitirous will destroy your engine without proper fuel and tuning. theres plenty of guys runnign 9-10psi on stock block KA's which is more than enough to get into the 13's with a decent launch. i forget who but theres at least one guy here that has been funning a stock block on 15psi@350hp with a jwt ecu and some good injectors