Its actually not as bad as it sounds. Ok, about two weeks ago I just finished my ka24de custom turbo kit, on my 95 s14. The kit consisted of jgs log mani, saab t3 turbine, 2,5 inch down pipe, stock exhuast, maf hacked to 2.7 inches, 370's stock fuel pump, non intercooled setup, with a dsm bov and a custom valve ontop of the bov, that prevents stalling. I ran pressure side to waste gate, which was like 3-4 lbs. First run can ran beautifully, pulled very swell at low boost I was a happy camper.
Then me and my bro wanted to see what the would pull like at higher boost we had no boost controller(dumb idea), so we just pulled the wastgate line. Next run out, carfully watching the boost gauge as we drove it. As i was slowly acellerating, 1k like 2 lbs 2k 4-5 then bam I creep up to 3k and boost shoots up to 14 lbs, before I could back off the throtle. I got scared thought the engine was done. But the car seemed fine. Later that day we took it out, with wastegate line on. After a couple runs, the car started driving funny. We pop the hood, we see oil, from the cam breather, I was like Oh no. We hurry back to the shop, to check compression. 1-3 was 150+ then #4 piston 65psi!. After that I realized that we hadn't kicked the timming yet down to 16. And was still rocking stock fuel pump. A dumb thing to do. But you know how it is, you just goota test it out. Im positive that that one time of hight boost is what killed the engine.
Well anyway, I found a nice s13 longblock for $50 locally, it turned out to be freashly rebuilt with new timing chain just what I needed. This time around, I got an safc, wideband o2 setup, walbro fuel pump, egt fuel pressure gauges, 3 in exhaust. And knock sensor alert. Ill keep you posted when drop the engine back in.
Vadem
Blown ka24de-t engine, please read.
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bruinbear714
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Re: Blown ka24de-t engine, please read.
vadem wrote:Its actually not as bad as it sounds. Ok, about two weeks ago I just finished my ka24de custom turbo kit, on my 95 s14. The kit consisted of jgs log mani, saab t3 turbine, 2,5 inch down pipe, stock exhuast, maf hacked to 2.7 inches, 370's stock fuel pump, non intercooled setup, with a dsm bov and a custom valve ontop of the bov, that prevents stalling. I ran pressure side to waste gate, which was like 3-4 lbs. First run can ran beautifully, pulled very swell at low boost I was a happy camper.
Then me and my bro wanted to see what the would pull like at higher boost we had no boost controller(dumb idea), so we just pulled the wastgate line. Next run out, carfully watching the boost gauge as we drove it. As i was slowly acellerating, 1k like 2 lbs 2k 4-5 then bam I creep up to 3k and boost shoots up to 14 lbs, before I could back off the throtle. I got scared thought the engine was done. But the car seemed fine. Later that day we took it out, with wastegate line on. After a couple runs, the car started driving funny. We pop the hood, we see oil, from the cam breather, I was like Oh no. We hurry back to the shop, to check compression. 1-3 was 150+ then #4 piston 65psi!. After that I realized that we hadn't kicked the timming yet down to 16. And was still rocking stock fuel pump. A dumb thing to do. But you know how it is, you just goota test it out. Im positive that that one time of hight boost is what killed the engine.
Well anyway, I found a nice s13 longblock for $50 locally, it turned out to be freashly rebuilt with new timing chain just what I needed. This time around, I got an safc, wideband o2 setup, walbro fuel pump, egt fuel pressure gauges, 3 in exhaust. And knock sensor alert. Ill keep you posted when drop the engine back in.
Vadem
No fuel control + no timing control = KAboom!
If you're lucky, you might be able to change out just the headgasket.
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MikeMurphy
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No listen, the only dumb, retarted thing I did that I regret now is doing that one run with no boost controller, dude im sure u'd be itching to do the same. Now I have an electronic boost controller. Ive done my research, the engine was on its way out, anyways, this was a good reason to change it out. Call me stupid, I dont care Im sure im not the only one to blow a KA on this board. The only reason I posted this, was to tell the noobs what happends with no boost controller. I wasn't that mad now I can say im JDM tyte yo, and say Ive swapped My engine hehe, Jk. I have a volvo intercooler at my shop, Im doing this step by step to see the improvments. And I got my engine because supposidly had a blown hg but they gave a good engine instead. Later.
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Checkered-Member
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2003 Audi A6 2.7T (stock) - Contact:
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:: orion ::
- Posts: 1483
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- Car: '96 240SX, with KA-T @ 12psi...
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tic tac -
Detonation killed your pistons. The timing chain would break before it jumped. You have to pry that sucker off even with no oil pressure (when you disassemble a motor), so it's really not possible that it jumped timing.
Go ahead and realize that bad tuning caused detonation and destroyed your piston. Happens with too much timing on a KA...you can even run it pretty lean under boost and not detonate, until you feed it too much timing.
- Brian
Detonation killed your pistons. The timing chain would break before it jumped. You have to pry that sucker off even with no oil pressure (when you disassemble a motor), so it's really not possible that it jumped timing.
Go ahead and realize that bad tuning caused detonation and destroyed your piston. Happens with too much timing on a KA...you can even run it pretty lean under boost and not detonate, until you feed it too much timing.
- Brian
