Pinging noise after a race, please help

[ZUL8R]

So last night we were at the pavs (an AZ spot) hanging out with Greg AZHITMAN (the man ). I went for some races in dear valley with my AZ350Z.com crew. Well i was racing a 513WHP SRT4 . We raced all the way to about 140. Well by the time I got to 140 i started hearing a pinging noise. Pulled over, opened the hood and the turbo was glowing red. There is a pinging noise coming from inside the motor. Its a KA motor with a Greddy Turbo. Well i just bought this car not even two days ago from North Carolina. I dont know much yet about 240's and i was hoping you guys can help me out. I am going to Pitstop performance on tuesday and i will let u guys know what happened. Well i need help knowing what Rods i should get, Valves, Valve springs, and cams in case i need to buy all that. I tuned the car when i first got it to AZ. It put down 388WHP and 386 Tq. Also, where do i go for all these parts. Cheap but mainly fast shipping and stuff. I reall appreciate u guys helping out.thanks guys, Peace

PS. 240's RULE THE WORLD, by the time we both hit 140MPH he had not even one car length on me and he is pushing 130 more WHP then Me
Modified by ZUL8R at 1:30 PM 12/24/2006

[ISUJinX]

Umm.. Was the car still running? Do you have a turbo timer installed? Did you remember to let the turbo cool down slowly before you turned the car off?

That pinging,popping noice is probably your turbo crying out from being thrashed and then put to bed wet... as the saying goes. If your turbo is glowing red, and you are looking at it, and the engine isnt running... you did something wrong :-p.

[adrianfromthecastle]

check your turbo lines... any coolant leaks? i remember one of my turbo lines was efffed up and was making a weird noise when boosting, not sure if its a "ping" but it's abnormal, thats for sure.

[ZUL8R]

No it has nothing to do with the turbo. It was glowing, offcourse i didnt turn the car off. I let it sit until the tubo cooled off. I drove the car for about ten miles after that cause a towin company was probably a couple hundred bucks from where i was. The pinging noise is coming from inside the motor. There is no leaks or nothing. Something inside the motor came lose or broke.

[KFL]

No it has nothing to do with the turbo. It was glowing, offcourse i didnt turn the car off. I let it sit until the tubo cooled off. I drove the car for about ten miles after that cause a towin company was probably a couple hundred bucks from where i was. The pinging noise is coming from inside the motor. There is no leaks or nothing. Something inside the motor came lose or broke.

detonation.. possibly advanced timing/fuel/afr's.. odds are damage can vary.Only way to find out how much is to tear it down. Post up in the Ka-t forum

[Florida240sx]

Do a compression test. Does it smoke? Does it ping at idle, under load?

[ZUL8R]

Do a compression test. Does it smoke? Does it ping at idle, under load?

I am going to the shop tom morning. Hope i didnt do too much damage. The car does the pinging at idle but louder at load. I dont think there is any smoke though. I will keep u guys updated. Peace

[EstoMax]

if it sounds like this:

then rod bearing (#3 cylinder in my case)

http://media.putfile.com/rod-bearing-ka24de

thrust/main bearings (spun all mains including thrust bearing, my bad.):http://media.putfile.com/transmission-noise

just something to help you diagnose Marko

[Swedish Mike]

The KA´s never bend their rods huh? Always broken off and out the block?A bent rod hitting the crank can make a noise as you describe.

/Mike

[DammitBobby]

I am betting bent rod too!

[C-Kwik]

Rod bearings, bent rods, even damaged pistons can make a knocking type of sound. Doesn't sound like detonation as it would be unlikely to occur at idle. Detonation could have been a cause though...

[ZUL8R]

Well it does not sound that loud at all like the Videos. But kinda similar. The shop heard the car today and they think it might have something to do with the vavles. Well, they r gonna let me know what the deal is tom. I will keep u guys updated.

[GlacierFreeze]

Good luck! If it's a bent rod, time for forged pistons, rods and more boost! hahaha

What turbo ya running anyway? Pretty good power so far.

[ZUL8R]

Good luck! If it's a bent rod, time for forged pistons, rods and more boost! hahaha

What turbo ya running anyway? Pretty good power so far.

I am running the Greddy T606-20G turbo with FMIC. Love the power and torque. I think the boost shot up during the race because i need a wastegate actuator. The old spring couldnt hold.

[Bosrudorfer]

350hp+ on stock motor... wow!

[WDRacing]

I'll almost guarantee rod knock. Makes the noise at idle and increases under load...sounds JUST like rod knock. It's not bad if fixed now. Youll need a new set of bearings and might as well upgrade the rods. Have the Crank inspected while the motor is apart. At this point, you might as well go with a full forged internal rebuild. So find a set of pistons and rods that you like and buy them. Then have a machine shop handle the measurements and get the proper bearings.

The good part is this, you'll be able to put down copious amounts of power without hurting anything now. You just need some bigger injectors and a fresh tune.

Keep us updated. If you see Greg, smack him on the *** for me and tell him Brian says hello.

[Bosrudorfer]

Would that cause his turbo to glow red though? I thought timing could cause that and I know the Greedy Emanage screws with timing.

[WDRacing]

The turbo glows red because of the 1400 degree exhaust flowing through it...lol. If I'm drag racing and I make more then one run in a row, my turbo is GLOWING hot when I pop the hood and thats after I make it back around to a stop. The manifold and turbine section are super heated every time you're in boost for longer then a few seconds. This has nothing to do with the noise though, not directly anyway.

The long race and extended time under peak torque and high rpm will beat up some bearings that may have already been on the way out. Or possibly lack of oil pressure.

WD

[ZUL8R]

Well guys, the motor is a KA stage 2 built by Tophat performance. Whats wierd is it says on their website that there is Rods but the guy i bought the car from says it doesnt. The car does have 750 injectors in it. Its a beast, but doesnt run

[Bosrudorfer]

Hmm my turbo or manifold have never glown red.

[ZUL8R]

Ok so the shop called me like a half hour ago. They did a compression test and Cyliner 3 is lower than the others. They think its the vavles. So i need to upgrade the valves. One shop told me that they need to take the motor out and another said they need to take the heads off and take it to a machine shop to install the valves. I am located in Arizona. If you guys know of a good shop i can deal with that you have done work with before and didnt try to rip you off please let me know. I really need help on this. I just got the car and dont know any shops for the 240 yet. Thanks

[GEO]

Maybe the turbo acted like a heat pump

[Florida240sx]

My engine makes a strange noise. I've been ignoring it.... started 2months ago...since then I've boosted 5k miles at 17psi.... If it was a bent rod then it would of come out by now right? Hasn't gotten louder, and at times it's quieter.... I have crower v2 cams and I know he didn't reshim them, even though it says no need to but people have had to.... Maybe it's just my timing chain...

[Bosrudorfer]

Yep the timing chain noise sometimes freaks me out too.

[ZUL8R]

Well they did a compression test and Cylinder 3 was much lower than the others, so there hs to be something wrong with the motor

[Swedish Mike]

Well they did a compression test and Cylinder 3 was much lower than the others, so there hs to be something wrong with the motor

Ask them if they added some oil to that cylinder and made a second test, that way you know if the piston rings are ok or fried.The oil will seal the rings if they are bad and give them more compression.

Sorry for my crappy english...

[ZUL8R]

They did another compression test today at SRD and they are 99.9% sure that i messed up one of the valves so they are gonna replace it. I wanted to replace all of them with some nice aftermarket ones but it wwill cost much more so i will just fix the problem for now.

[ZUL8R]

So I am going to be changing the Valve springs, retainers, and Valves. I am going with the Brian Crower Valve springs, and retainers but the Valves are out of stock for a couple of weeks. Well i really need to get my 240 on he road. So, wht do u guys think of Supertech Valves?? I found these ones available. If u know of any other good brand please lmk. I need those Valves ASAP. thanks

[halnfl]

Supertech are good quality parts. I've had them in my ka with their complete valvetrain with 530 whp for almost 10 months and haven't had any problems. You can get them on ebay from dirkslyder( I think thats his ebay name) for like $675 for springs, locks, valves and all. You can also get the econel exhaust valves for a little more. I'm also using their pistons, I'd definetly trust their products.

[ZUL8R]

Supertech are good quality parts. I've had them in my ka with their complete valvetrain with 530 whp for almost 10 months and haven't had any problems. You can get them on ebay from dirkslyder( I think thats his ebay name) for like $675 for springs, locks, valves and all. You can also get the econel exhaust valves for a little more. I'm also using their pistons, I'd definetly trust their products.

Well here is the latest news fellas. When they took the head off they found out that i blew a head gasket and something broke between the exhaust and the turbo came loose or something. So hopefully i will have my car back in the next couple of days.