I got my head on and the engine running. I also put on an underdrive pulley, 310cc injectors, a Yank converter, and full exhaust, and I already had an HO intake and bigger throttle body. Unfortionately I kept my factory cams cause my others didnt come in time. at first i started it and it was making this terrible tapping noise which wound up being the timing tensioner. So I reset that and now I notice another uncomfortable noise. At first I noticed it after a hard pull when I let off the gas at about 5500 rpm. It sounds kind of like gears grinding and kind of like somthing vibrating and kind of like an echo all at the same time if that makes sence. Doesnt do it while accelerating or decelerating while normal driving or getting on it. It does when you rev the engine to about 3000 rpm in park or neutral and letting off at high rpms. Im lost what could it be?
what kinda gas are you running in it?
The High octane. I hooked it up to HP tuners scan and it isnt showing any spark knock .
It sounds similiar to my problem after everything was assembled. Turned out the torque convertor was coming loose. You may want to recheck it to make sure it is on the flex plate nice and tight. Did you tighten the bolts to the torque specs?
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"Youth in Asia"...I don't see anything wrong with that.
Thanks again Brian. Definitely easier to check than the timing chain again.
so whats the 086 head like? you did all that work and your letting it breathe hot engine bay air?
Its a lot peppier than the stock 2.4 head. Like i said above I havent changed my cams yet so the large ports arent being used at their full potential. As for the hot engine air I plan on rerouting my intake eventually.
But lemme guess, you're not gonna dyno it, until you wait for the stars to align, and we will yet again have to wait for somone else to dyno to see what kind of difference it makes.. right?
Beau wrote:But lemme guess, you're not gonna dyno it, until you wait for the stars to align, and we will yet again have to wait for somone else to dyno to see what kind of difference it makes.. right?
It's been discussed before. The biggest difference will come from larger cams (ie HO cams or larger). I wouldn't hold your breath on dyno results anyways. No one will dyno a before and after of
JUST the head. It's nowhere near as easy of a task as removing an ECO or OHV head...so people tend to upgrade or replace parts while the motor is apart.
And to keep this in perspective: There aren't many who have done this swap, but there are hundreds of members who have done HO manifold swaps and we have still yet to see any dyno results from that.
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"Youth in Asia"...I don't see anything wrong with that.
Yeah im probably not gonna dyno the car until I get a new bottom end built and have my HO cams in. I just dont have the money for that right now as curious as I may be. I am however probably going to take it to the track with just the head and no cams if the stars alighn n I get a friday night off.
Well... When you are adding 20-40 cfm worth of flow, it should be As THOUGH your adding a set of cams... Even with a stock set of cams, it should significantly improve performance.
ANd it is a shame people always wait to until the day that never comes to spend $70 to get a dyno done, to prevent or encourage people in the right or wrong direction.
Its definitely a noticable difference from before. I just dont have the money to spend on it right now. College is starting soon and I need to buy books, which isnt cheap. If I did have the money I would definitely Dyno it just out of curiosity and becasue I know a lot of people are curious. I might end up doing it before the cams and bottom end but I cant promise anything.
As far as the strange noise, It isnt the torque converter bolts and it isnt the timing chain. Im stumped. Could a cam or valves be making that noise? I dont know why they would be only making noise only when the engine wasnt under a load or at high rpms. Im so lost and kinda mad.
