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-   -   Jay'Z Built Engine Health Diagnosis needed!! Engine Builders Opinions Pls!! (https://my350z.com/forum/forced-induction/454336-jayz-built-engine-health-diagnosis-needed-engine-builders-opinions-pls.html)

Jay'Z Sep 4, 2009 07:46 AM

Jay'Z Built Engine Health Diagnosis needed!! Engine Builders Opinions Pls!!
 
I am noticing this noise become more prominent and not sure if its coming from the cam area.. Is this noise normal on a built engine? I would like Engine Builders opinions and Built engine owners opinions.. Id like to be reassured its healthy.. Its been about 30k miles, the car is running normal at 35-40psi oil pressure at idle, 170-190 water temp even on hot days, and 15psi high boost.

Vid of noise..


<embed width="448" height="361" type="application/x-shockwave-flash" wmode="transparent" src="http://s40.photobucket.com/player.swf?file=http://vid40.photobucket.com/albums/e218/jonb7777/Enginenoise002.flv"></embed>

Sharif@Forged Sep 4, 2009 07:51 AM

Hmm...sounds like a normal built motor. I do hear some piston slap or valvetrain type noises, but nothing really alarming.

This was an SGP motor, if I remember correctly, and so far it seems to be holding up well, making good power, good oil pressure, and low oil consumption. I wouldnt worry.

thom000001 Sep 4, 2009 08:11 AM

got noisy injectors like me too lol

tom

Jtran Studios Sep 4, 2009 08:16 AM


Originally Posted by Sharif@Forged (Post 7715930)
Hmm...sounds like a normal built motor. I do hear some piston slap or valvetrain type noises, but nothing really alarming.

This was an G and G motor, if I remember correctly, and so far it seems to be holding up well, making good power, good oil pressure, and low oil consumption. I wouldnt worry.

fixed for ya sharif

Jay'Z Sep 4, 2009 08:23 AM


Originally Posted by Sharif@Forged (Post 7715930)
Hmm...sounds like a normal built motor. I do hear some piston slap or valvetrain type noises, but nothing really alarming.

This was an SGP motor, if I remember correctly, and so far it seems to be holding up well, making good power, good oil pressure, and low oil consumption. I wouldnt worry.

Ok, thanks.. They didnt build the engine it was done at some shop in Houston, SGP just put it together, and I saw the heads etc were wrapped in plastic/ built from what I saw.. :dunno:


Originally Posted by thom000001 (Post 7716001)
got noisy injectors like me too lol

tom

They are RC 750cc.. Never could compare with anyone elses built engine so Im all alone in Missouri here with the FI/Built Z.. lol


Originally Posted by Overdrive/Jtran (Post 7716022)
fixed for ya sharif

I dont get it? What is G and G? If its a joke let me know so I can laugh.. :confused: I think the Built block itself was from a Nissan Pathfinder, thats what Sharif said if I remember correctly..

Jtran Studios Sep 4, 2009 08:27 AM

g and g did all of there motors. assembly, balance, blueprint, setting cold lash, porting of heads, everything. all sgp did was bolt the head to the block and set the timing chains up. anyone that needs a good vq machine shop, go to them. joe is the owner, tell him jtran sent yall!

thom000001 Sep 4, 2009 08:28 AM

I have their 1000's......but still batch firing of them with the pro-efi 48 so with 3 firing at a time its noisy lol

tom


Originally Posted by Jay'Z (Post 7716049)
They are RC 750cc.. Never could compare with anyone elses built engine so Im all alone in Missouri here with the FI/Built Z.. lol


Jay'Z Sep 4, 2009 08:31 AM


Originally Posted by Overdrive/Jtran (Post 7716061)
g and g did all of there motors. assembly, balance, blueprint, setting cold lash, porting of heads, everything. all sgp did was bolt the head to the block and set the timing chains up. anyone that needs a good vq machine shop, go to them. joe is the owner, tell him jtran sent yall!

Thats exactly what I saw/thought...... :cool: I kinda knew SGP only put the new heads on, re installed engine etc.. I knew they didnt actually build it.. But they never told me that.. I just figured it out..

Chris@FsP Sep 4, 2009 08:50 AM


Originally Posted by Overdrive/Jtran (Post 7716061)
g and g did all of there motors. assembly, balance, blueprint, setting cold lash, porting of heads, everything. all sgp did was bolt the head to the block and set the timing chains up. anyone that needs a good vq machine shop, go to them. joe is the owner, tell him jtran sent yall!

Hmm, yeah SGP led me to believe that they did all assembly themselves. Well, it's best that they didn't considering the cleanliness of their shop :icon17:

djamps Sep 4, 2009 12:16 PM

Sounds great to me.

My stock heads make more noise up top than that, but I think it's mostly the injectors.

If you close the hood and walk back about 10 feet and can barely hear it or not at all, then you should be OK.

doug Sep 4, 2009 12:21 PM

turn the radio up brotha.. thats what i do anytime i hear something i don't feel like worrying about :D

Jay'Z Sep 4, 2009 12:36 PM


Originally Posted by djamps (Post 7716898)
Sounds great to me.

My stock heads make more noise up top than that, but I think it's mostly the injectors.

If you close the hood and walk back about 10 feet and can barely hear it or not at all, then you should be OK.

I wanted some opinions from Builders/Built Owners, as I have never heard any other built engines on idle close up.. Thanks though!


Originally Posted by doug (Post 7716921)
turn the radio up brotha.. thats what i do anytime i hear something i don't feel like worrying about :D

I do, I just dont want to ignore if its bad and end up with a blown engine.. Now is not a good time for me as I am relocating to TX.. :hello:

Cass007 Sep 4, 2009 12:40 PM

Jay, my vid is on page 32 of my thread. I thought they sounded similar, but after listening to yours again I would say that mine was MUCH louder, it sounded like a tractor motor :icon14:.

djamps Sep 4, 2009 12:44 PM


Originally Posted by Jay'Z (Post 7716978)
I wanted some opinions from Builders/Built Owners, as I have never heard any other built engines on idle close up.. Thanks though

Well if a stock block (mine) sounds like a tractor compared to yours, which it does up close, I'd hope that eased your fears a bit. Anyhow, good luck anyways!

Jay'Z Sep 4, 2009 12:54 PM


Originally Posted by djamps (Post 7717005)
Well if a stock block (mine) sounds like a tractor compared to yours, which it does up close, I'd hope that eased your fears a bit. Anyhow, good luck anyways!

Thanks you have, do you have upgraded cams? I forgot how a stock block sounds too.. lol

ToastZ Sep 6, 2009 02:25 PM

Sounds like a built motor with aftermarket cams and injectors.

I have BC-Stage2 cams and HKS injectors (1000cc) and at idle you can definitely hear some valvetrain noise with the hood open and hovering around the top of the engine like in your video.

If you have healthy oil pressure and good power under boost, not burning oil or any smoking or missing coolant,... then I vote no worries and enjoy the car :)

Jay'Z Sep 6, 2009 02:34 PM


Originally Posted by ToastZ (Post 7721448)
Sounds like a built motor with aftermarket cams and injectors.

I have BC-Stage2 cams and HKS injectors (1000cc) and at idle you can definitely hear some valvetrain noise with the hood open and hovering around the top of the engine like in your video.

If you have healthy oil pressure and good power under boost, not burning oil or any smoking or missing coolant,... then I vote no worries and enjoy the car :)

Thanks ToastZ!! :thumbup:

SmallTuner Sep 6, 2009 04:34 PM

normal on built VQs, dont worry

Blackbird CPV35 Sep 6, 2009 07:44 PM

That isnt **** compared to mine, which sounds like someone is hitting the manifold with a hammer.

And no its not rod knock or anything, Ive been driving with the noise for ~10k miles

Jay'Z Sep 6, 2009 07:51 PM

Ok, anyone care to post vids of their engine on idle? Just for true reassurance.... :hello:


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