IRVINE

iTrader: (3)

hey guys, I have just completed a complete rebuild, port/polish(pineapple racing's medium street port) and single turbo upgrade. I am still running stock injectors, fuel pump and computer until I break the engine in. I have fired the car up about 10 times now, i was having exhaust leaks and flooding issues so i had to take care of that but I just noticed tonight that it is making a weird klunking noise. I took a video of the car idling but it wont allow me to attach it to this thread. the only thing i could compare it to is an old tractor engine at idle....just not as loud! the car idles around 1100rpm and hasnt dropped below that since the rebuild. I havent put it in gear yet so its not like i ran it too hard. The sound seems to be coming from the engine itslef but im not 100% positive. does anybody know what this might be? thank you,

Alex

asianguy02

iTrader: (4)

post vid to youtube and put the html link in the post box. It'll load right up. That being said, I have no idea what the problem is, but good luck.

IRVINE

iTrader: (3)

thanks asianguy02 i just put the video on youtube.

here is the link: http://www.youtube.com/watch?v=J0PR7AZTwOo

the video is too dark to see anythin g but the sound is pretty good (iphone video)

rx7rcer09

the problem is your running a ported motor on a stock computer. you need to upgrade you unit the stock ecu cant compensate with the new intake and exhaust amounts.

IRVINE

iTrader: (3)

that would cause the noise coming from the engine? The car ran without that noise for the first 8 - 10 times. im guesing that i would have to get the new computer tuned right away? thanks for your help,

alex

KKMpunkrock2011

iTrader: (5)

you'll need the new ecu and a tune anyways. kinda sounds like something is loose and is vibrating, at least that's how it sounds in the video, exhaust maybe?

GoodfellaFD3S

iTrader: (213)

Who built the motor?

That exhaust note doesn't sound right. Hard to diagnose over the net, but a compression check wouldn't be a bad idea.

IRVINE

iTrader: (3)

thanks for your input guys....i am going to contact a guy about a tune and computer tonight. The motor was built by myself and a friend with a lot of help from the information on this site. I will go over everything again to make sure nothing is loose and i will try to fire it up again tomorrow.

Alex