CURE FOUND!! No More Single Mass/ZF6 Rattle
08-17-2008, 03:11 PM
#1
Safety Car
Thread Starter
CURE FOUND!! No More Single Mass/ZF6 Rattle
Just about everyone here knows how bad a ZF6 makes noise when you put a Alum FW in front of it. 
I have however FOUND THE CURE.
It seems when you put 600HP in front of the Alum FW, even through a Corsa exhaust system, the dreaded ZF6 rattle is not even noticeable.
See for yourself:
I know I haven't said much about my new engine - more than a few pics here and there. Only a few folks here were aware it was even being built. It took a lot of time, knowlege and money to built it.
Still running on the stock tune and it's a bit rich.
Honestly I can't do much more than move it around the yard and idle it. Putting it on the trailer was an experience I'd like to forget - as my Corsa exhaust is going to now need replacement.
Looking to get it tuned in the next few weeks. Soon as I get the time to buy a new Corsa exhaust, put it on the car, set up a tune appointment and trailer it over to a WELL KNOWN CF tuner here in VA.
Will
I have however FOUND THE CURE.
It seems when you put 600HP in front of the Alum FW, even through a Corsa exhaust system, the dreaded ZF6 rattle is not even noticeable.
See for yourself:
I know I haven't said much about my new engine - more than a few pics here and there. Only a few folks here were aware it was even being built. It took a lot of time, knowlege and money to built it.
Still running on the stock tune and it's a bit rich.
Honestly I can't do much more than move it around the yard and idle it. Putting it on the trailer was an experience I'd like to forget - as my Corsa exhaust is going to now need replacement. Looking to get it tuned in the next few weeks. Soon as I get the time to buy a new Corsa exhaust, put it on the car, set up a tune appointment and trailer it over to a WELL KNOWN CF tuner here in VA.
Will
08-17-2008, 04:02 PM
#2
Le Mans Master
Your higher idle might have something to do with quieting the gearbox rattle? Though I think that generally works because it smooths the idle, while that thing sounds lumpy!
08-17-2008, 04:57 PM
#5
Safety Car
Thread Starter
As far as the idle, it honestly won't idle any lower right now due to the stock tune and 40lb injectors.
Even when it's tuned I expect it to idle about the same. The cam is a custom grind from Mike Jones (Jones Cam Designs).
Will
08-17-2008, 05:22 PM
#6
Racer
Just about everyone here knows how bad a ZF6 makes noise when you put a Alum FW in front of it.
I have however FOUND THE CURE.
It seems when you put 600HP in front of the Alum FW, even through a Corsa exhaust system, the dreaded ZF6 rattle is not even noticeable.
See for yourself:
I know I haven't said much about my new engine - more than a few pics here and there. Only a few folks here were aware it was even being built. It took a lot of time, knowlege and money to built it.
Still running on the stock tune and it's a bit rich. Honestly I can't do much more than move it around the yard and idle it. Putting it on the trailer was an experience I'd like to forget - as my Corsa exhaust is going to now need replacement.
Looking to get it tuned in the next few weeks. Soon as I get the time to buy a new Corsa exhaust, put it on the car, set up a tune appointment and trailer it over to a WELL KNOWN CF tuner here in VA.
Will
I have however FOUND THE CURE.
It seems when you put 600HP in front of the Alum FW, even through a Corsa exhaust system, the dreaded ZF6 rattle is not even noticeable.
See for yourself:
I know I haven't said much about my new engine - more than a few pics here and there. Only a few folks here were aware it was even being built. It took a lot of time, knowlege and money to built it.
Still running on the stock tune and it's a bit rich.
Honestly I can't do much more than move it around the yard and idle it. Putting it on the trailer was an experience I'd like to forget - as my Corsa exhaust is going to now need replacement. Looking to get it tuned in the next few weeks. Soon as I get the time to buy a new Corsa exhaust, put it on the car, set up a tune appointment and trailer it over to a WELL KNOWN CF tuner here in VA.
Will
Let us know how you go about taming this beast...
My suggestion is that you go w/ the new 3" Magnaflow cat-back system instead of the 2.5" Corsa...
That way the beast will still 'roar' rather than 'mew'...
Bart
Last edited by 89FX3; 08-17-2008 at 05:32 PM.
08-17-2008, 05:51 PM
#8
Drifting
... People going on your Public Profile to see if your Cam specs are listed.
(I confess). Sounds like about 108 LSA. A good tune will often tame it down some. Bummer about your exhaust though...
(I confess). Sounds like about 108 LSA. A good tune will often tame it down some. Bummer about your exhaust though...
08-17-2008, 07:57 PM
#10
Melting Slicks
What aspect of the cam would yield that exhaust note?
Love how choppy it is, is it because it has a low LSA? I have a 110 on mine and it's choppy, but not quite like that.
What are your cam specs if you don't mind sharing?
Love how choppy it is, is it because it has a low LSA? I have a 110 on mine and it's choppy, but not quite like that.
What are your cam specs if you don't mind sharing?
08-17-2008, 11:46 PM
#13
Safety Car
Thread Starter
Ahh, I saw another post that showed your cam.
Yours ..... 232/238 0.544 112
Mine .......230/230 0.598 110
That choppier sound is due to higher compression maybe? I see yours is at 10.8 whereas mine is 10.0 (mechanic told me that was my CR anyway)
My idle.
Yours ..... 232/238 0.544 112
Mine .......230/230 0.598 110
That choppier sound is due to higher compression maybe? I see yours is at 10.8 whereas mine is 10.0 (mechanic told me that was my CR anyway)
My idle.
That is the cam for Nolands (BlackHarleyMan) engine. I had it ground by Reed Cams in Atlanta Ga. His hits a nice lick but is no where near as radical as my personal car (his was never intended to be).
The video is my personal car.
The cam in question is a custom grind I specd from Jones Cam Designs. The lobes are a EHR74365 Intake and a EHR75365 Exhaust. The lobes act much bigger than the numbers tell because it is an inverse flank lobe, which until very recently were used only on mech rollers.
288/292 @ .006
242/246 @ .050
.620/.620 (1.7/1.7)
106 IC / 110 L/S
A few pics of the engine
Will
Last edited by rklessdriver; 08-17-2008 at 11:52 PM.
08-18-2008, 08:55 AM
#14
Racer
The cam in question is a custom grind I specd from Jones Cam Designs. The lobes are a EHR74365 Intake and a EHR75365 Exhaust. The lobes act much bigger than the numbers tell because it is an inverse flank lobe, which until very recently were used only on mech rollers.
288/292 @ .006
242/246 @ .050
.620/.620 (1.7/1.7)
106 IC / 110 L/S
Will
This strictly a track car, right??
Last edited by 89FX3; 08-18-2008 at 09:11 AM.
08-18-2008, 08:57 AM
#15
Drifting
Will,
That thing sounds like a BEAST!......................... I can't wait to get mine tuned also, hopefully one of us can get Ed on the phone soon!
Noland
That thing sounds like a BEAST!......................... I can't wait to get mine tuned also, hopefully one of us can get Ed on the phone soon!
Noland
08-19-2008, 12:06 AM
#19
Pro
Member Since: Jul 2002
Location: Lynchburg VA
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08-19-2008, 10:21 PM
#20
Le Mans Master
Cool. Give us more details on the engine: heads? 383 or 396? etc.
Mine sounded like that before I put the resonator on it to quiet it down. Do you have cats on?
Mine sounded like that before I put the resonator on it to quiet it down. Do you have cats on?
