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found out diff weights interesting???

Started by _1QUICK EH_ , Dec 28 2006 11:00 PM

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#26 _1QUICK LJ_

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Posted 29 December 2006 - 11:53 AM

im not saying it wont make any difference at all but i dont see it really affecting my handling on any great scale. that's worth worrying about. now we are starting to split hairs again as usual. :rolleyes:

Edited by 1QUICK LJ, 29 December 2006 - 12:00 PM.

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#27 micklx

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Posted 29 December 2006 - 12:34 PM

Most people who do a 9 inch conversion , just put it in and forget about it. No more busted axles or centres. You never hear anyone complain about how it affected the handling. It's not like we're talking about open wheel race cars here, the humble Torana is not all that sensitive to a bit more unsprung weight surely ?

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#28 _Oldn64_

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Posted 29 December 2006 - 01:05 PM

You dont hear too many people bagging the nine inch either for their weaknesses, as they dont want to know. There is quite alot of stuff that is needed (non ford) to keep the things from dieing. I ran a banjo behind my EH for a number of good runs. but I suppose my diff was different to everyone else's as I actually rebuilt it so it was not 40 years old and comparing it too a diff which had been rebuilt. Put proper bearings into it and you might find they do have some life in them. Again if you use non geniune parts for strength this does help them. In the long run a salsbury design diff is stronger than a banjo design (which the 9 inch is) most people doing the "9 inch" conversion actually end up with a 8 3/4" diff, but people do not highlight this either..

Cheers

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#29 _devilsadvocate_

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Posted 29 December 2006 - 03:57 PM

If you dont need a 9inch, hauling around another 20kg is an unnecessary use of energy and production of CO2......as well as the extra friction that is caused bythe 9inch.��
far out no need to go overboard , i wont be calculating if i have enough fuel to get the moon or not, 21 kg is 21 kg,
if you busted 2 diffs a year and it cost $95 each tow total $190+repair cost each time, would you save that in fuel a year with a diff that weighs 20kg less i dont think so, your working on a false economy devils

Quick LJ, you've gone off half cocked here.

21kg is 21kg

? You were the one that claimed you couldnt notice 20liters of fuel slopping around . I didnt want to create a mountain out of a molehill over the fact that 20 liters of fuel will only weigh 14.8kg, just a small point for you to consider which has detracted from the point you were making. (It is a bigger % difference than the mass of the 9inch to the banjo). It is quite common that most people assume that all liquids have the same density as water........20 liters of lpg will only weigh 10.2kg......worth considering.

I agree with your point about false economy, however, you have read something else into what I wrote.

If you dont need a 9inch, hauling around another 20kg is an unnecessary use of energy and production of CO2......as well as the extra friction that is caused bythe 9inch

Cost in $ was never mentioned.
I wont be busting any banjo's or salisburys this year or the next...........they can last "forever" with sensible use.........don't think a 9 inch is going to be a good economic decision here.

Edited by devilsadvocate, 29 December 2006 - 04:08 PM.

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#30 MRLXSS

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Posted 29 December 2006 - 04:39 PM

this was a really really interesting topic until someone questioned the weight of petrol...

I have a 9inch ready to go in my Torry and i cant wait to put it in. I must say just moving it around the garage i can tell its at least the 21kg heavier! and when you drop it on your foot you notice it as well!

I believe that 20kgs is a very insignificant weight to gain or loose in a car. i know they say that everything counts. But as many others have said, they have not really noticed any real power or handling differences when it comes to the extra 21kgs

if you are a bit of a fatty loose 21kg then put a 9inch in! and you wont even notice if there is any difference in anything!

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#31 _devilsadvocate_

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Posted 29 December 2006 - 05:12 PM

Sorry ^, useless facts clouding the mist again, hope you didn't "loose" the thread of things.

Edited by devilsadvocate, 29 December 2006 - 05:12 PM.

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#32 MRLXSS

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Posted 29 December 2006 - 05:25 PM

Sorry ^, useless facts clouding the mist again, hope you didn't "loose" the thread of things.

only thing thats lost around here is your sense of humour

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#33 _Rally hatch_

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Posted 29 December 2006 - 05:28 PM

As far as the 9 inch goes.... I've had two of them over the years, one in an 11 sec auto 308 powered Torry... as far as i know it was a nothing special 28 spline limo,and never had trouble with it... The second was in a 9 sec Torry and was turning 28x12 slicks it had all the goodies and cost more than the total cost of my first three cars put together... once again never had a prob with it, was a case of set and forget...
This time I'm using a B/W.... my track car runs one... while it's not making mega HP it is under alot of strain and for a lot longer peiod of time. The only prob that I have had with it is the limo is not as good as it should be, but it was second hand when I got it and just threw it in......
I'm in the process of building another one for my little side prodject To gether both B/W diffs would owe me less than $250! So What I'm getting at is the B/W is a ALOT cheaper and common than the 9 inch..

(why do I always end up typing an epic story every time I want to make a quick comment!!!! :ZZZ:

)

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#34 _1QUICK LJ_

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Posted 29 December 2006 - 07:25 PM

ok so around 27litres of fuel is around 21kg depending what blend of fuel that is :rolleyes:

, gee thanks for clearing that up devils. id still rather have a 9in any day

. yes mine is fully rebuilt with romac steel hat ect. at least i will now be able to drive hard and not worry about too many smashed diffs in the future. overkill only way to go :spoton:

Edited by 1QUICK LJ, 29 December 2006 - 07:27 PM.

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#35 TerrA LX

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Posted 29 December 2006 - 07:49 PM

i think the key factor here is if you are going to loose weight from a car or try to keep it down the best place for it is unsprung weight which will, however small, show up in time by better handeling either for a track car or at the drags with better traction.
of course there is no subdtirute for a 9" when the hp is hi.

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#36 _devilsadvocate_

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Posted 29 December 2006 - 08:54 PM

Sorry ^, useless facts clouding the mist again, hope you didn't "loose" the thread of things.
only thing thats lost around here is your sense of humour

Hmm, nothing intended to be of humour there, a subtle message perhaps, but you�ve played and missed again(tried to hit me out of the park), best let them go through to the keeper in future, even if it looks like a loose ball(cloo).

Edited by devilsadvocate, 29 December 2006 - 09:02 PM.

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#37 _rorym_

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Posted 29 December 2006 - 09:34 PM

I went for the B/W as I am running a full spool with 28 spline axles ..it is about $1000 cheaper than the Flaud...heaps lighter and every Skylines got one...we have ..tonight actually..600HP+ sprintcars running them and no one has broken one yet..I rest my point...as said earlier...I have run the banjo LSD in the LC 308 race car and have not had a wimper out of it yet...I dont abuse it..I DRIVE it sensibly and still get results....there in is the difference.. A 9" makes no difference if you drive in a straight line over 400M...its the corners/handling thing where it all comes unstuck.
R

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#38 _Rally hatch_

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Posted 29 December 2006 - 10:06 PM

I went for the B/W as I am running a full spool with 28 spline axles ..it is about $1000 cheaper than the Flaud...heaps lighter and every Skylines got one...we have ..tonight actually..600HP+ sprintcars running them and no one has broken one yet..I rest my point...as said earlier...I have run the banjo LSD in the LC 308 race car and have not had a wimper out of it yet...I dont abuse it..I DRIVE it sensibly and still get results....there in is the difference.. A 9" makes no difference if you drive in a straight line over 400M...its the corners/handling thing where it all comes unstuck.
R

never has a truer word been spoken

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#39 _1QUICK LJ_

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Posted 30 December 2006 - 12:39 AM

this is all quite funny really, i didn't expect such a drama over all this i don't know why some people seem so threatened by other people choosing to go 9in its up to them, i mearly posted the weights so people could make up their own mind if its worth it for them going 9inch or B/W or banjo, i have not once knocked the B/W diffs i think they are great don't get me wrong, but for the money the 9in worked out best for me at $1100 3.5 gears,rebuilt lsd, romac steel hat,28spline axles, ARP 1/2in race studs etc. i couldn't get a B/W built that strong for the same money. im also into drags and ratio changes are much much easier. so there you go rorym ive made my decision and you've made yours simple. if you dont like 9in thats fine but you wont change my mind thanks anyway.your into roundies, im into drags.im not saying anyone has to run a 9in ,all ive said is that it suits my application for what i want to do, simple.
there are horses for courses, live and let live i say :spoton:

make up your own minds. and devils you need to chillout a bit dude theres enough professors on here already, develop a sense of humor man. :spoton:

i still think it quite funny lol.

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#40 rodomo

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Posted 30 December 2006 - 01:13 AM

Another subtle message.

Sorry ^, useless facts clouding the mist again, hope you didn't "loose" the thread of things.

Tick, Tick, Tick, Tick, Tick, Tick,.................

Edited by rodomo, 30 December 2006 - 01:27 AM.

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#41 _devilsadvocate_

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Posted 30 December 2006 - 04:46 AM

Yes, I write one sentence hoping to make at least one person see/remind what should be basic knowledge��.oil floats on water��..Rather than just taking it in and moving on, we have to have the customary defence attacking the messenger/ justifying the original nonsense and then a personal attack(Im referring to the fool icon that was added) for not having the same view on the topic that opinions were sought on. Then we have the 2 familiar want to be exorcists join in�� hope they work out my last post before two long.

Edited by devilsadvocate, 30 December 2006 - 04:48 AM.

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#42 _rorym_

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Posted 30 December 2006 - 08:43 AM

this is all quite funny really, i didn't expect such a drama over all this i don't know why some people seem so threatened by other people choosing to go 9in its up to them, i mearly posted the weights so people could make up their own mind if its worth it for them going 9inch or B/W or banjo, i have not once knocked the B/W diffs i think they are great don't get me wrong, but for the money the 9in worked out best for me at $1100 3.5 gears,rebuilt lsd, romac steel hat,28spline axles, ARP 1/2in race studs etc. i couldn't get a B/W built that strong for the same money. im also into drags and ratio changes are much much easier. so there you go rorym ive made my decision and you've made yours simple. if you dont like 9in thats fine but you wont change my mind thanks anyway.your into roundies, im into drags.im not saying anyone has to run a 9in ,all ive said is that it suits my application for what i want to do, simple.
there are horses for courses, live and let live i say make up your own minds. and devils you need to chillout a bit dude theres enough professors on here already, develop a sense of humor man. i still think it quite funny lol.

your into roundies, im into drags.

Exactly ...Horses for courses..It suits your application but not mine..the point I was trying to make. (Still havent worked out how to do the bloody quote thing!)
R

Edited by rorym, 30 December 2006 - 08:44 AM.

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#43 _JBird_

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Posted 30 December 2006 - 09:28 AM

Guys guys. I think everyone missed the part where Devil's made the point of reference that 1 litre of petrol did not convert to 1kg of mass, was just an aside. A side note. I sure as didn't know that.

On the point of Unsprung mass. Rory and 1QuickLJ have brought up good points. I'm sure all have noticed that 9" are more suited to Drag racing (even if a lot of VL's Vn's etc. still use the stock B/W diff). However most of those blow up and they swap for a 9".

B/W's are starting to become readily available with replacement parts, however they're not cheap like 9" parts. Kaaz make a good mechanical LSD and you can also get billet axles. And it has been noted by 1QuickLJ that you can't get the same strength needed for drag racing for the same price going the B/W route.

Just to add, (I don't know the exact figure) but unsprung weight becomes multiplied under braking, turning. So 21kgs (or 10kg(?) B/W to 9") may become 50 or 100. <Attack me on the figure it was a guess>

This is a good thread...

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#44 _LHoon_

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Posted 30 December 2006 - 09:30 AM

I have run the banjo LSD in the LC 308 race car and have not had a wimper out of it yet...I dont abuse it..I DRIVE it sensibly and still get results....

Who would actually want to need to drive their car sensibly??

I certainly don't. I enjoy the fact that if I ever want to abuse my diff, I can.

I can't stand weak driveline components!

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#45 _rorym_

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Posted 30 December 2006 - 10:16 AM

The LC isnt the type of abuse car, its designed to get from one point to the next asap. If it was a drag car I would rethink the whole rear end. As it is..it does the job very well...still lights them up out of corners...then you go back and feed in the HP just on the point of lighting them up. Great fun..the aim is to go faster each run, as I said..horses for courses..I was never a drag man..had a mate with a Z1000 that used to do it...stuffed the drive train in no time..12 secs of fun just doesnt appeal to me...but!..it does to a lot of others..and I wish them all the fun in the world. Just not my bag.
R

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#46 _1QUICK LJ_

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Posted 30 December 2006 - 02:21 PM

Sorry ^, useless facts clouding the mist again, hope you didn't "loose" the thread of things.
only thing thats lost around here is your sense of humour
Hmm, nothing intended to be of humour there, a subtle message perhaps, but you�ve played and missed again(tried to hit me out of the park), best let them go through to the keeper in future, even if it looks like a loose ball(cloo).

played and missed what?lol. devils this is not a game, maybe it is in your head (brainiac), its just a comparison in weight of the 2 diffs thats it, quite simple really. then you come along and try and get technical with a heap of B/S that really doesn't apply or matter. the fuel weight thing was a good point you made but you went over the top on the rest. thats what gets my back up, you try and impress people with hi tech B/S, everybody else can talk in layman's terms on here and all made valid points, i thank everybody for their imput, but you just seem to take it all way too far on just about every topic on this forum. we are torana lovers on here discussing related matters. not a bunch of white coats trying to make matters more technical than they have to be. :spoton:

. be real man chillout :blink:

Edited by 1QUICK LJ, 30 December 2006 - 02:24 PM.