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12.5:1 hi comp build 

 

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 Post subject: Re: 12.5:1 hi comp build
Posted: Tue Apr 10, 2012 12:48 pm 
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i went from a std 12kg flywheel to a lightweight billet 8kg flywheel and honestly noticed no real difference in acceleration,1/4 mile or fuel consumption..

so if there is a difference i think its 2/10's of f**k all...lol..
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 Post subject: Re: 12.5:1 hi comp build
Posted: Tue Apr 10, 2012 1:13 pm 
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TROYMAN wrote:
i went from a std 12kg flywheel to a lightweight billet 8kg flywheel and honestly noticed no real difference in acceleration,1/4 mile or fuel consumption..

so if there is a difference i think its 2/10's of f**k all...lol..


Haha true well I spoke to clarko from clarkos performance and he seems to think it makes a he'll of a difference but couldn't tell me how it would behave on the street.

 

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 Post subject: Re: 12.5:1 hi comp build
Posted: Tue Apr 10, 2012 9:31 pm 
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i got a lightweight billet flywheel with my npc clutch i cannot notice a difference either bro free revs a bee's d**k faster thats about it

 

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 Post subject: Re: 12.5:1 hi comp build
Posted: Tue Apr 10, 2012 9:35 pm 
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xhfalcon wrote:
i got a lightweight billet flywheel with my npc clutch i cannot notice a difference either bro free revs a bee's d**k faster thats about it


ive actually got the npc 10.5" lightweight flywheel aswell..
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 Post subject: Re: 12.5:1 hi comp build
Posted: Tue Apr 10, 2012 10:00 pm 
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xhfalcon wrote:
i got a lightweight billet flywheel with my npc clutch i cannot notice a difference either bro free revs a bee's d**k faster thats about it


True so for a street motor it's not worth removing 11-13 kgs off the rotating assembly? Sounds like heaps to me....but Im no pro that's for sure. Earlier in the thread someone wrote I should invest in scat rods for their weight and strength, there f**k all lighter then standard au rods, and I'm sure au rods can handle 200 or so kws. Maybe that's a waste of money aswell. I would have thought removing like 13 kgs all up would make a considerable amount of difference?? Like not just doing the flywheel, also the flywheel I'm looking at is alloy and claims to be 6.1kg.

I'm not worried about spending money on the crank and flywheel, or rods for that matter, otherwise were else should I spend 1500 dollars to extract more horsepower without forced induction??
Big learning curve for me thanks for any input

 

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 Post subject: Re: 12.5:1 hi comp build
Posted: Tue Apr 10, 2012 10:06 pm 
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JayEdXr6 wrote:
xhfalcon wrote:
i got a lightweight billet flywheel with my npc clutch i cannot notice a difference either bro free revs a bee's d**k faster thats about it


True so for a street motor it's not worth removing 11-13 kgs off the rotating assembly? Sounds like heaps to me....but Im no pro that's for sure. Earlier in the thread someone wrote I should invest in scat rods for their weight and strength, there f**k all lighter then standard au rods, and I'm sure au rods can handle 200 or so kws. Maybe that's a waste of money aswell. I would have thought removing like 13 kgs all up would make a considerable amount of difference?? Like not just doing the flywheel, also the flywheel I'm looking at is alloy and claims to be 6.1kg.

I'm not worried about spending money on the crank and flywheel, or rods for that matter, otherwise were else should I spend 1500 dollars to extract more horsepower without forced induction??
Big learning curve for me thanks for any input

which intake manifold you running? i have heard of porting them to get more beans out of the motor?
the au rods on forced induction application will handle about 250+kw but they dont like it, troymans running 267kw on an unopened au motor

 

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 Post subject: Re: 12.5:1 hi comp build
Posted: Tue Apr 10, 2012 10:26 pm 
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I wanna run a entirely new plenum, such as snort performance etc. Haven't fully looked into that yet. Otherwise I'll have a bbm or a log extrude honed, nearly costs as much as buying all new plenum! But I might loose to much torque with the plenum???

 

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 Post subject: Re: 12.5:1 hi comp build
Posted: Wed Apr 11, 2012 2:50 pm 
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Image

Here's what my new motors going into, finally figured out how to upload photos with my iphone

 

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 Post subject: Re: 12.5:1 hi comp build
Posted: Wed Apr 11, 2012 4:57 pm 
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thats a bloody nice example of a ed xr6 man, the look of the boxcar xr is growing on me more and more :twisted:

 

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 Post subject: Re: 12.5:1 hi comp build
Posted: Wed Apr 11, 2012 5:03 pm 
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Cheers man I do my best to keep it tidy, I've owned it for 3 years now, here's a photo from about 6 months ago before the 19's
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 Post subject: Re: 12.5:1 hi comp build
Posted: Wed Apr 11, 2012 5:10 pm 
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JayEdXr6 wrote:
True so for a street motor it's not worth removing 11-13 kgs off the rotating assembly? Sounds like heaps to me....but Im no pro that's for sure. Earlier in the thread someone wrote I should invest in scat rods for their weight and strength, there f**k all lighter then standard au rods, and I'm sure au rods can handle 200 or so kws. Maybe that's a waste of money aswell. I would have thought removing like 13 kgs all up would make a considerable amount of difference?? Like not just doing the flywheel, also the flywheel I'm looking at is alloy and claims to be 6.1kg.

I'm not worried about spending money on the crank and flywheel, or rods for that matter, otherwise were else should I spend 1500 dollars to extract more horsepower without forced induction??
Big learning curve for me thanks for any input



I'd say because its balanced and rotates from the center, a few kg makes no difference for an engine that is capable of propelling your 2000KG worth of vehicle at a high speed.

This idea of course is different for pistons, rods, valves etc because these items are moving up and down at a great speed so the weight will have an effect on maximum rotation speed.

 

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 Post subject: Re: 12.5:1 hi comp build
Posted: Wed Apr 11, 2012 5:16 pm 
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Makes sense but I still fail to see how taking that much off will do sweet f all but I really don't know.

 

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 Post subject: Re: 12.5:1 hi comp build
Posted: Wed Apr 11, 2012 7:31 pm 
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need a camber kit on the front end mate lol,

 

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 Post subject: Re: 12.5:1 hi comp build
Posted: Wed Apr 11, 2012 7:47 pm 
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bry40l wrote:
need a camber kit on the front end mate lol,


Haha yer that been done it's sitting on cut superlows all round in that photo, received the full sports Ryder setup Inc sway bars and camber kit since then

 

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 Post subject: Re: 12.5:1 hi comp build
Posted: Wed Apr 11, 2012 9:04 pm 
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JayEdXr6 wrote:
Makes sense but I still fail to see how taking that much off will do sweet f all but I really don't know.



depends where the weight was taken from. weight taken from close to the center won't do much.
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