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Location:
Brisbane
Registered:
July 2002
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Single Spinners and high Hp engines
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Mon, 23 February 2004 07:11
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Basically im asking how bad traction loss I would have on start off with a single spinner from standing start and just mashing accelerator
facts will be
1984 gz10
1200kg
1jz gte running 180 rwkw
with IRS suspension with all urethane bushes, low king springs and just pedders shocks
17 inch rims with dunlop fm901's
will I have alot of traction issues?
I only ask as i may have to put up with it until i can track down an lsd out of an ma61
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: Single Spinners and high Hp engines
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Mon, 23 February 2004 07:14
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Yes, you will have lots of traction issues 
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Location:
Brisbane
Registered:
July 2002
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Re: Single Spinners and high Hp engines
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Mon, 23 February 2004 07:21
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i better find a scrapper ma61 then 'ey
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I supported Toymods
Location:
Australia
Registered:
November 2003
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Re: Single Spinners and high Hp engines
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Mon, 23 February 2004 08:51
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Yes
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Registered:
March 2003
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Re: Single Spinners and high Hp engines
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Mon, 23 February 2004 09:20
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Many traction issues, even with an LSD. You could try looser suspension, but it wouldn't be much good other than for drags.
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Location:
Brisbane
Registered:
July 2002
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Re: Single Spinners and high Hp engines
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Mon, 23 February 2004 09:21
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definately want it to be set up as is and be good for taking corners
but i would also like to be able to fry turbocharged bogans
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Location:
Colac, Victoria
Registered:
May 2002
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Re: Single Spinners and high Hp engines
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Mon, 23 February 2004 10:00
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if you have a same setup as a ma61 you mgiht wwant to look at a trutrack setup like waht norbie has in his - Costa about a grand to purchase though hes getting excellent results
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Location:
Brisbane
Registered:
July 2002
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Re: Single Spinners and high Hp engines
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Mon, 23 February 2004 10:06
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yeah.. ma61 diff for now and just get everythign running and when i
actually have money again.. then ill get one
its in the plan
im hoping to have 10.5 to spend
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Location:
UK at moment
Registered:
May 2003
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Re: Single Spinners and high Hp engines
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Mon, 23 February 2004 12:47
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I think with 17" rims you will be fine.. lucky.
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Location:
Brisbane
Registered:
July 2002
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Re: Single Spinners and high Hp engines
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Mon, 23 February 2004 12:59
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how does 17 inch rims change anything?
if anything it lessens the grip i would have, i would think.
being less tyre hitting the actual road cause of lower profile
the tyres are 235's with the dunlop fm901's.. so im hoping its not hopeless
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Location:
UK at moment
Registered:
May 2003
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Re: Single Spinners and high Hp engines
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Mon, 23 February 2004 13:55
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that comment was in jest, that's all..
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Location:
Brisbane
Registered:
October 2002
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Re: Single Spinners and high Hp engines
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Tue, 24 February 2004 07:32
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actually u would lose traction with the 17s cause the walls will not flex at all, compared to 14's, {not much, but a bit}
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Location:
UK at moment
Registered:
May 2003
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Re: Single Spinners and high Hp engines
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Tue, 24 February 2004 09:51
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Okay, I'll be constructive ..
The highest HP I have had with an open centre diff was about 180 rwHP (so obv less than you're going for) - and the car weighed a little more as well.. I was running 15" 225 or 235 yokohama's.. and yes, major traction issues .. I could light it up at 70-80k's an hour.
This was an NA motor, and you will experience worse problems with a boosted engine's power delivery I would expect..
When the diff was welded (for an intermediate measure) it improved immensly (sp?) ..
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Location:
Brisbane
Registered:
July 2002
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Re: Single Spinners and high Hp engines
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Tue, 24 February 2004 13:02
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but welding the diff would create cornering problems would it not?
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: Single Spinners and high Hp engines
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Tue, 24 February 2004 13:16
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Yeah...like mucho understeer followed by mucho oversteer providing you had any power.
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Location:
UK at moment
Registered:
May 2003
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Re: Single Spinners and high Hp engines
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Tue, 24 February 2004 14:07
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... indeed it will!
I was not at all advocating a welded diff, rather illustrating that it made a significant difference when power was delivered to two wheels..
do not weld the diff in a high powered car if you have not experienced the "subtle" nuances involved with this setup before!
my point : 180 rwkw with one wheel being driven will definetly have major traction issues, so be prepared for that! (tyre/wheel combo will have little to do with combating this)
I owned a ta22 with a very well setup rear end with a brand new LSD, and it was infinetly better than the CIG variety .. (except in the fun stakes!) ..
my advice - if you are really going to be making 180rwkw - spend the extra and get the power to the ground (ie; use something other than an open wheel standard diff - I'd be surprised if it lasted very long with that power anyways...) ..
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Location:
Brisbane
Registered:
July 2002
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Re: Single Spinners and high Hp engines
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Wed, 25 February 2004 01:32
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yeah.. i will be.. but i mighjt have to wait a few days/weeks on a single spinner while i hunt around for an ma61 lsd
thats why i ask
my mates vc ran high 12's on a single spinner
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I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
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Re: Single Spinners and high Hp engines
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Wed, 25 February 2004 01:46
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Noble M12 GTO has 310bhp with no lsd, and seems to cope pretty well
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: Single Spinners and high Hp engines
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Wed, 25 February 2004 01:48
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Although now Noble has seen the light and the current GTO's have an LSD
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Location:
Madrid - Spain
Registered:
August 2002
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Re: Single Spinners and high Hp engines
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Wed, 25 February 2004 02:24
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IRS open diffs cope with the power a lot better than a live axle open diff. This is because the torque transfer on the casing is reacted by the wheels and suspension, causing the drivers side wheel to lift, reducing traction on that wheel. The torque on IRS diffs is reacted directly by the chassis, no loading up of the suspension except for thrust line moments. (back of the car lifting or dropping).
Having said that, there is no reason why an open IRS can't cope with heaps of power off the mark. Theoretically it wouldn't make any difference wether it is open or locked. The problem is ensuring that you don't have any weight jacking due to porely fitted anti-roll bars or springs of different heights/rates.
Traction will be more of a problem on corner exit though. Your choice should hang on how soon you want to give it a hard time through a corner, not so much dragging at the lights.
Just out of interest, I tried weight jacking on my live axle celica to reduce wheels spin. It got very ugly when I changes into 2nd. with both wheels fighting each other for traction. and kicking the arse all over the place.
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Location:
Brisbane
Registered:
July 2002
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Re: Single Spinners and high Hp engines
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Wed, 25 February 2004 06:41
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hmm.. well hopefully i dont have to find out. i want an lsd.. but we will see how i go
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