***7.450 push rods***
Team Owner
Joined: May 2006
Posts: 21,473
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From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
AVB..I sent you a PM on what went on with the startup tonight...
The YT has made the sewing machine sound quieter and bearable. All I hear is the even sound of a near stock sewing machine sound along with the intake noise.
I can hear the fans when they come on now
The p-rods were checked without the p-rod checker because it hasn't arrived yet. I will use it when it comes in just to see how close Iam to having the correct p-rods
Again a big THANKS to you and everyone who helped me on this project.
Sleeper
The YT has made the sewing machine sound quieter and bearable. All I hear is the even sound of a near stock sewing machine sound along with the intake noise.
I can hear the fans when they come on now
The p-rods were checked without the p-rod checker because it hasn't arrived yet. I will use it when it comes in just to see how close Iam to having the correct p-rods
Again a big THANKS to you and everyone who helped me on this project.
Sleeper
What was the exact thicness on the shims you used?
I was thinking of checking my swipe pattern and seeing if it is off as well and if I'll need to shim up my HS RR's or also go to the YT's!
Let me know when you can!
Thanks,Matt
Melting Slicks
Joined: Jun 2006
Posts: 2,983
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From: Redondo Beach Ca
Thread Starter
Le Mans Master
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
I think they are .045 ..the swip pattern is in the center.
I'm quieter now, but I'm waiting for the p-rod checker to come in to see exactly what lenght p-rods I need.
Sleeper
Last edited by SLPRC5; Sep 7, 2007 at 06:03 PM.
Thread Starter
Le Mans Master
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
Thread Starter
Le Mans Master
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
This the sound after I installed the YT with the shims.
Still running the 7.425 p-rods until the checker comes in.
On the video it sounds about the same, but live it has quieten down some.
Hood down sound:
Under Hood:
Still running the 7.425 p-rods until the checker comes in.
On the video it sounds about the same, but live it has quieten down some.
Hood down sound:
Under Hood:
Last edited by SLPRC5; Sep 4, 2007 at 03:12 AM.
Thread Starter
Le Mans Master
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
I view it opposite, shims will set the wipe pattern. Once set, measure for pushrod. However, using the shims will definitely affect pushrod length. We measured this morning and he needs a 7.475 or 7.500" pushrod to get the correct preload. So to say the least, we are at all stop 
Went out and took the measurment needed. What a surprise.
The p-rod checker comes 6.800 and it took me 12 turns to have it snug w/o pressing the lifter or the rocker 12x.050= 0.6+6.800=7.4+.075=7.475. So I also need the 7.500 p-rods
I lucked up and the shop that did some work on my car has a set of 7.500 and he is willing to swap me for the 7.425s that I have. So I'll be up and running this weekend
Thanks VN for all the help..
Sleeper
Last edited by SLPRC5; Sep 7, 2007 at 06:10 PM.
Thread Starter
Le Mans Master
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
The cam we installed has very aggressive lobes. It has some noise that I can only describe as "well oiled mechanical" like an old open factory machine. It has no valve train noise. The noise we hear is radiating through the intake. When you shut the hood, you can't really hear it.
Sleeper
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Racer
Joined: Sep 2000
Posts: 373
Likes: 0
From: Wakefield R.I.
Received my p-rod checker this AM.
Went out and took the measurment needed. What a surprise.
The p-rod checker comes 6.800 and it took me 12 turns to have it snug w/o pressing the lifter or the rocker 12x.050= 0.6+6.800=7.4+.075=7.475. So I also need the 7.500 p-rods
I lucked up and the shop that did some work on my car has a set of 7.500 and he is willing to swap me for the 7.425s that I have. So I'll be up and running this weekend
Thanks VN for all the help..
Sleeper
Went out and took the measurment needed. What a surprise.
The p-rod checker comes 6.800 and it took me 12 turns to have it snug w/o pressing the lifter or the rocker 12x.050= 0.6+6.800=7.4+.075=7.475. So I also need the 7.500 p-rods
I lucked up and the shop that did some work on my car has a set of 7.500 and he is willing to swap me for the 7.425s that I have. So I'll be up and running this weekend
Thanks VN for all the help..
Sleeper
Thread Starter
Le Mans Master
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
That was the length we went to with the Yella Terras. BE sure to check the p.rods when you get them for the center oiling hole in that the size is a std. size for Mopars and some Mopars don't need the hole in the p.rods so there are both pieces out there. If you are using Comp cams P.rods the part # 7957-16 is the one for LSX engines.
I got the p-rod checker and after the check it was determined I needed 7.475 or 7.500 push rods.
So here is the sound of the 7.500 push rods. This as close as it will get to stock sounding.
The injectors can be heard..this was taken inside my garage and this location may add to the sound also.
Racer
Joined: Sep 2000
Posts: 373
Likes: 0
From: Wakefield R.I.
Deno
The engine sounds just like mine. Still trying to get use to it. Hope you are happy with the out come after all your work. I know I am very happy with the performance we got out of my setup.
Good luck
The engine sounds just like mine. Still trying to get use to it. Hope you are happy with the out come after all your work. I know I am very happy with the performance we got out of my setup.
Good luck
Thread Starter
Le Mans Master
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
What size cam are you running?
Thread Starter
Le Mans Master
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
What size p-rods did your checker say to go with? Yes I only hear the injectors through the intake. I might get one of those engine covers to see what that would do, but I'm worried about the heat it will hold in over the coils and the fuel rails.
Racer
Joined: Sep 2000
Posts: 373
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From: Wakefield R.I.
How did the test run go?
Thread Starter
Le Mans Master
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
I'm going to have mine re-dyno'd after I install a CAI box.
I was at your numbers with the A4.
The run went great..took it by the shop that had did the work and they said (also my neighbor) didn't hear it when I pulled up.
No sound inside the car only hear the headers when next to other cars at a light.
Cam has a nice lope to it, the Tis sound off when you floor it.
So I guess that part is done and I'm satisfied with the outcome
Last edited by SLPRC5; Oct 28, 2007 at 04:06 AM.
