AWD-T3-VR Lexcen - CommodoresPlus

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March 13, 2017 at 8:18 pm #22031
cava454
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- 93 VR BT1
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Good to know mate. Might have to shoot you a text in the near future.
March 21, 2017 at 6:24 pm #22102
Anonymous
Member since: January 1, 1970
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Totally blew this complex of corners but it looks good

https://www.youtube.com/watch?v=2ChPXHJ9M9Y
March 21, 2017 at 7:02 pm #22104
VRSenator065
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That sound
March 21, 2017 at 8:08 pm #22110
Anonymous
Member since: January 1, 1970
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Yeah it’s funny the LS series sounds like arse idling but give em a rev and it’s awesome, didn’t realise how much you can hear the Blower, can’t hear it inside the car at all there’s so much other noise..
March 21, 2017 at 8:10 pm #22111
VRSenator065
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Agree 100% holden v8 idle, LS full noise.
March 21, 2017 at 8:20 pm #22112
Anonymous
Member since: January 1, 1970
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It’s the Ford firing order that does it
March 21, 2017 at 8:48 pm #22113
VRSenator065
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Havd heard the firing order is it. Seems a major thing to change. Is there a reason?
March 21, 2017 at 8:59 pm #22114
Anonymous
Member since: January 1, 1970
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Think it’s to change the harmonics in the engine, they just sound like a vacuum cleaner at idle..

The Tonner isn’t too bad but it has a LOT of exhaust on it for a 5.7…
March 21, 2017 at 9:06 pm #22115
VRSenator065
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Mine sounds tuff at idle but i think thats the itbs. Cruising is plain jane. Wot awesome. Yours blower wine and full noise…… epic
March 21, 2017 at 9:21 pm #22116
Anonymous
Member since: January 1, 1970
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Yep ITB’s have a sound all their own, 7000ish through a tunnel mmm, mine sounds like an asthmatic cement mixer at idle…
March 21, 2017 at 9:49 pm #22118
VRSenator065
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Gold!

Anonymous wrote:

mine sounds like an asthmatic cement mixer at idle…

Gold!
March 22, 2017 at 6:06 am #22122
cava454
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If only the Ls Had a Holden firing order. Then it would be perfect. In saying that, I don’t mind the idle. My ute used to idle pretty sweet
March 22, 2017 at 11:31 am #22124
VRSenator065
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^yea sounds nice, funny how they are OK at idle, but not at cruise. Someone somewhere wrote that people have changed the firing order, but man that’s got to be huge task wouldn’t it?
March 23, 2017 at 9:42 am #22128
Anonymous
Member since: January 1, 1970
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Crashed out on Lap 3 Sunday tearing the trans cooler hoses out and ending my day, got offers from a few of the guys to drive their cars
May 24, 2017 at 3:44 pm #22903
Anonymous
Member since: January 1, 1970
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Lap #7 problem solved!

(in 18 months I’ve never got past lap #5 with 8 cylinders)

https://www.youtube.com/watch?v=2yracFsNQsc
May 24, 2017 at 4:34 pm #22904
Immortality
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So what was it?
May 24, 2017 at 9:35 pm #22908
Anonymous
Member since: January 1, 1970
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Combination of things in the end, ALL fuel related, partially blocked filter, Wiring to the pumps wasn’t even close to thick enough as I’d been given incorrect specs on the current draw, and having the Return plumbed into the Main tank and not the surge…

It wasn’t running out of fuel in the traditional sense under power as each pump has enough volume to run the engine flat out but when I was closed throttle above 2200 rpm both pumps were running flat out against closed injectors so was returning more than the life pump could supply…

Lift pump is an 044 Bosch so I figured it could easily keep up… DOH

Live and Learn.
May 25, 2017 at 11:54 am #22910
VRSenator065
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Great to hear you got it sorted Ian, nice work.
May 25, 2017 at 12:40 pm #22913
Anonymous
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Thanks Gary, it’s so very different to drive now!
May 25, 2017 at 2:43 pm #22916
Immortality
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VRSenator065 wrote:

^yea sounds nice, funny how they are OK at idle, but not at cruise. Someone somewhere wrote that people have changed the firing order, but man that’s got to be huge task wouldn’t it?

Not really. Obviously there are limitations with the way the crank is made (and the various permutations of the big end throws) but change the cam lobes and the firing order on the dizzy. To make a drastic change than the crank needs to be changed.

For example

In the above diagram you can see with the standard LS firing order the next cylinder to fire is always on the opposite bank except the 8-4 where as with the Holden engine

You can see that 2 cylinders on the same back fire consecutively on each back which is what give that very noticeable exhaust burble. You can also see it is basically the same (they number the cylinders differently as the early Ford firing order which I believe Ford have gone back to on the new Coyote engine.
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