The Lobster

finally got the swap done...started it up...and this crazy noise scares the **** out of us. Its not the block i have about 80 psi of oil preassure. We are pretty sure its the head.

sounds like a fing disiel for sure...it def sounds like the valve train hitting the valve cover, but i checked and its not.

I pull the head 3 months ago while short block was getting built and it didnt sound liek that before.

Head:900 miles
y8
crane turbo cam
crane springs/retainers
crane gear
oem valves with 3 angle valve job

block:fresh rebuild
9.1 cp pistons
eagle rods
aebs sleeved
crank balanced/micro polished

so does anyone with a crane cam sound liek this?

im scared shitless i havent started it for more then 2 mins trying to see where the sound was.

when i crank it without the ecu the sound isnt there so its not hitting anything.

http://www.youtube.com/watch?v=4mL73rdXxzs

Tippyman

Sounds like a diesel?

Sounds like good ole' forged piston slap to me. My vitaras do it too...

The Lobster

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tippyman &raquo;</TD></TR><TR><TD CLASS="quote">Sounds like a diesel?

Sounds like good ole' forged piston slap to me. My vitaras do it too...</TD></TR></TABLE>

is that what it sounds like?

The builder wanted me to bore to the next size on teh build but i already had these pistons. He told me he would just lightly deglaze? them so i wouldnt have to buy new pistons.

i havent kept it running long enough to reach operating temps. So you think i should at least try that? wait till its warmed up? see if the sound goes away?

SovXietday

Putting a cam in an SOHC makes it very noisey. Sounds like a deisel with a loud tap right? If so, it's normal.

The Lobster

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SovXietday &raquo;</TD></TR><TR><TD CLASS="quote">Putting a cam in an SOHC makes it very noisey. Sounds like a deisel with a loud tap right? If so, it's normal.

</TD></TR></TABLE>

i have the video at the end of my post.

i just went through youtube with people vitaras...it sounds similar cept mine are about 3 times louder

when it reachs operating temps it should go away right? if so ill let it idle till its at operating tomorrow

Tippyman

Warmer the engine, bigger the pistons, quieter the noise. (If it is piston slap.)

batboyvaj

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by The Lobster &raquo;</TD></TR><TR><TD CLASS="quote">

is that what it sounds like?

The builder wanted me to bore to the next size on teh build but i already had these pistons. He told me he would just lightly deglaze? them so i wouldnt have to buy new pistons.

i havent kept it running long enough to reach operating temps. So you think i should at least try that? wait till its warmed up? see if the sound goes away?</TD></TR></TABLE>

wait a min here. so you bored it .20 over and used a stock bore piston?

The Lobster

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by batboyvaj &raquo;</TD></TR><TR><TD CLASS="quote">

wait a min here. so you bored it .20 over and used a stock bore piston? </TD></TR></TABLE>

no sir....read please

the builder thought it would be safer if i went to one size up...i told him i couldnt afford it so please used the OG CP pistons. he said he can do it(deglaze)i am still at stock bore.

so piston slap it is???

cause im am going to sit there tomorrow and bear the noise and hopefully when its warmed up itll go away...


Modified by The Lobster at 9:27 AM 8/9/2008

champLSinteg

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by The Lobster &raquo;</TD></TR><TR><TD CLASS="quote">
the builder thought it would be safer if i went to one size up...i told him i couldnt afford it so please used the OG CP pistons. he said he can do it(deglaze), carefully
</TD></TR></TABLE>

I dont understand what you or he means by deglazing carefully...

b20vtechb

ummm valve lash.... any time you change out cams it has to be set

The Lobster

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by champLSinteg &raquo;</TD></TR><TR><TD CLASS="quote">

I dont understand what you or he means by deglazing carefully...</TD></TR></TABLE>

sorry drunk...but builder said he would deglaze instead of hone so he wouldn't take much material off since i didnt want to go up another size since i wanted to use the stock bore piston.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b20vtechb &raquo;</TD></TR><TR><TD CLASS="quote">ummm valve lash.... any time you change out cams it has to be set</TD></TR></TABLE>

The valve lash was set when the cam was installed. This noise wasnt there 3 months ago when i pulled the head off the old running motor. Which baffles me since i havent touched the head teh whole time it was off.

The Lobster

well i just tried to warm it up...

the noise gets louder as i gave it some gas.

it started to idle normal,
i dont think its piston slap now...i am going to adjust the valves tomorrow thats teh only thing i can do now.


Modified by The Lobster at 11:36 AM 8/9/2008

The Lobster

i am throwing a TPS and MAP code so i switched the two plugs around and the car wont start.

this video is with me throwing code 5 and 7

anyway i think its more valve noise now more then anything. Listen to the other sound there sounds like there is knocking? motor is brand new so rod knockshouldnt set in so quick.

http://www.youtube.com/watch?v=4Sbi9E9vRNY

eh3 93

Doesnt sound like rod knock. I would re-check the valve lash. What is your car idling at? Sounds kinda high. Btw, this is what my car sounded like when the valve lash was off.
http://www.youtube.com/watch?v=8TVHZc5ifmQ

The Lobster

Thanks for the video.

i watched it couple times i hear teh ticking sounds sorta like mine.

i THINK i also hear that knocking sound.

so you just adjusted your valve lash and everythign was well afterwards?

thanks agian for the video i searched high adn low for every sound possible on youtube must of missed yours.

The Lobster

just redid all the lash specs

sound still there...

eh3 93

Drain your oil. See if you see any metal chips.