It is modification time!
07-23-2007, 07:56 PM
#1
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It is modification time!
I think it is time to people to talk about mods for the upcoming track days, general enhancement of the car etc etc.
New new semi-slicks (Yokohama A048) - no track reviews until October (really)
This is it. The new thing that glues. It took me 2 years to have the courage to try something new. And after a lot of Internet research (some of which are very bias I have to add), I decided on the Yokohama Advan A048. They are in the size of 235/40 R18 91Y MH compound. MH compound is the hardest compound and the same compound used in the Lotus Exige models.
From comparing between the 2 tyres (the Bridgestone on the left; and the Yokohama on the right), the tyres look the same in width. Although the Yoko is 235 and the Bridgestone is 245, the square shape of the Yokohama means the contact part of the tyre of Yoko is the same size as (if not any more than) the Bridgestone. The tyre is smaller - as you can see on the bottom picture, and lighter - with even just my hand I can tell, and certainly the size wall is stronger (with a smaller profile).
245/40 R18 Bridgestone (left tyre) VS 235/40 R18 Yokohama (right tyre)
I will track here of any track review, but these tyres are saved for the Nationals.
New new semi-slicks (Yokohama A048) - no track reviews until October (really)
This is it. The new thing that glues. It took me 2 years to have the courage to try something new. And after a lot of Internet research (some of which are very bias I have to add), I decided on the Yokohama Advan A048. They are in the size of 235/40 R18 91Y MH compound. MH compound is the hardest compound and the same compound used in the Lotus Exige models.
From comparing between the 2 tyres (the Bridgestone on the left; and the Yokohama on the right), the tyres look the same in width. Although the Yoko is 235 and the Bridgestone is 245, the square shape of the Yokohama means the contact part of the tyre of Yoko is the same size as (if not any more than) the Bridgestone. The tyre is smaller - as you can see on the bottom picture, and lighter - with even just my hand I can tell, and certainly the size wall is stronger (with a smaller profile).
245/40 R18 Bridgestone (left tyre) VS 235/40 R18 Yokohama (right tyre)
I will track here of any track review, but these tyres are saved for the Nationals.
07-23-2007, 08:03 PM
#2
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Thread Starter
Oh I forgot I am going to get some of these... does not matter which one but some adjustable endlink will be good I think.
I start to think there is still lean, after looking at photo and the front is not as stable as it should (although it is already pretty good). Bringing the endlink shorter so that the sway bar short arm in the more horizontal position makes sense.
Anything for the 1:40
. I am considering back to driving school. 
I start to think there is still lean, after looking at photo and the front is not as stable as it should (although it is already pretty good). Bringing the endlink shorter so that the sway bar short arm in the more horizontal position makes sense.
Anything for the 1:40
. I am considering back to driving school.
07-23-2007, 08:44 PM
#3
Hmmmmmm.........
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I was reading up in the A048 yesterday. They sound the business.
My next mods are going to be new rims, going back to OEM front bumper with a lip spoiler and flywheel/clutch. Probably in that order and hopefully before Nats
My next mods are going to be new rims, going back to OEM front bumper with a lip spoiler and flywheel/clutch. Probably in that order and hopefully before Nats
07-23-2007, 10:42 PM
#4
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I was hoping they have wider tyres but they only brings in the 235.
.... more mods.
I am thinking LSD and final drive from FEED. What do you think?
.... more mods.
I am thinking LSD and final drive from FEED. What do you think?
07-23-2007, 11:38 PM
#6
Hmmmmmm.........
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haha nice one Craig.
The FEED stuff worries me. mainly the build quality that I have read about. aprt from that if you pair it with a new final drive that gives you nicer (lower) RPM range in 5th/6th gear then I think its a great idea.
The FEED stuff worries me. mainly the build quality that I have read about. aprt from that if you pair it with a new final drive that gives you nicer (lower) RPM range in 5th/6th gear then I think its a great idea.
07-24-2007, 01:47 AM
#7
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Thread Starter
It is only one post that people talks that the gear does not fit, but there is no details. BTW they actually build them. Most of their items are outsource to some other people to make...
One person photograph it and said it fits perfectly.
I think it may be the weather ....
What kind of new shoes Craig? 8,5 or 9?
One person photograph it and said it fits perfectly.
I think it may be the weather ....
Originally Posted by RXVIII
I'm waiting for new white shoes for my sheep.
Last edited by takahashi; 07-24-2007 at 01:49 AM.
07-24-2007, 02:37 AM
#9
i need a new photo
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Oh I forgot I am going to get some of these... does not matter which one but some adjustable endlink will be good I think.
I start to think there is still lean, after looking at photo and the front is not as stable as it should (although it is already pretty good). Bringing the endlink shorter so that the sway bar short arm in the more horizontal position makes sense.
Anything for the 1:40 . I am considering back to driving school.
I start to think there is still lean, after looking at photo and the front is not as stable as it should (although it is already pretty good). Bringing the endlink shorter so that the sway bar short arm in the more horizontal position makes sense.
Anything for the 1:40
. I am considering back to driving school. I have just trashed one of mine, bad road near my house, nut feel off and stripped thread and bent arm.
R these Autoexe ones available in Aus???
M
07-24-2007, 03:14 AM
#10
Shootin' from the hip
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New new semi-slicks (Yokohama A048) - no track reviews until October (really)
This is it. The new thing that glues. It took me 2 years to have the courage to try something new. And after a lot of Internet research (some of which are very bias I have to add), I decided on the Yokohama Advan A048. They are in the size of 235/40 R18 91Y MH compound. MH compound is the hardest compound and the same compound used in the Lotus Exige models.
This is it. The new thing that glues. It took me 2 years to have the courage to try something new. And after a lot of Internet research (some of which are very bias I have to add), I decided on the Yokohama Advan A048. They are in the size of 235/40 R18 91Y MH compound. MH compound is the hardest compound and the same compound used in the Lotus Exige models.
And are they road legal?
Given the limited use my car gets on the street, I'm starting to think semi-slicks are the quickest way for me to get my lap times down.
07-24-2007, 07:20 AM
#16
Zoom Zoom Zooooooomm Psst
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07-24-2007, 05:34 PM
#17
nice tyres taka. are you using them as daily drives or just track?
we have a torsen LSD which is a torque biasing diff. The diff will send torque to the wheel that can support more torque, up to a fixed ratio. this is very good until one wheel looses traction completely when a torsen diff behaves like an open diff.
the after market ones are friction units. they limit slip with friction stopping the wheels moving independently and have to overcome the pre-set friction of clutches to allow diferential rotation. pro's: always there so can be more predictable if you loose traction on one wheel. cons: can be noisy
we have a torsen LSD which is a torque biasing diff. The diff will send torque to the wheel that can support more torque, up to a fixed ratio. this is very good until one wheel looses traction completely when a torsen diff behaves like an open diff.
the after market ones are friction units. they limit slip with friction stopping the wheels moving independently and have to overcome the pre-set friction of clutches to allow diferential rotation. pro's: always there so can be more predictable if you loose traction on one wheel. cons: can be noisy
07-24-2007, 05:39 PM
#18
Culpam Poena Premit Comes
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07-24-2007, 06:44 PM
#19
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No these are track tyres. I still wearing out my Michellin on road wheels.
Noisy indeed. When on the limit the car does not power out the way that I want. I "pushes" a bit on power and I have spoken to an American in Japan and he says most guys have look into the LSD and most are recommending a 2-WAY LSD.
I am still decoding the 11 pages LSD talk on the current mag.
Originally Posted by rotarenvy
we have a torsen LSD which is a torque biasing diff. The diff will send torque to the wheel that can support more torque, up to a fixed ratio. this is very good until one wheel looses traction completely when a torsen diff behaves like an open diff.
the after market ones are friction units. they limit slip with friction stopping the wheels moving independently and have to overcome the pre-set friction of clutches to allow diferential rotation. pro's: always there so can be more predictable if you loose traction on one wheel. cons: can be noisy
the after market ones are friction units. they limit slip with friction stopping the wheels moving independently and have to overcome the pre-set friction of clutches to allow diferential rotation. pro's: always there so can be more predictable if you loose traction on one wheel. cons: can be noisy
I am still decoding the 11 pages LSD talk on the current mag.
07-24-2007, 10:23 PM
#20
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Thread Starter
Found somewhere explain it better for me.
http://auto.howstuffworks.com/differential6.htm
That is why I found it slips and now laying down power sometimes 
http://auto.howstuffworks.com/differential6.htm
Originally Posted by Re: Torsen LSD
The Torsen differential* is a purely mechanical device; it has no electronics, clutches or viscous fluids.
The Torsen (from Torque Sensing) works as an open differential when the amount of torque going to each wheel is equal. As soon as one wheel starts to lose traction, the difference in torque causes the gears in the Torsen differential to bind together. The design of the gears in the differential determines the torque bias ratio. For instance, if a particular Torsen differential is designed with a 5:1 bias ratio, it is capable of applying up to five times more torque to the wheel that has good traction.
These devices are often used in high-performance all-wheel-drive vehicles. Like the viscous coupling, they are often used to transfer power between the front and rear wheels. In this application, the Torsen is superior to the viscous coupling because it transfers torque to the stable wheels before the actual slipping occurs.
However, if one set of wheels loses traction completely, the Torsen differential will be unable to supply any torque to the other set of wheels. The bias ratio determines how much torque can be transferred, and five times zero is zero.
The Torsen (from Torque Sensing) works as an open differential when the amount of torque going to each wheel is equal. As soon as one wheel starts to lose traction, the difference in torque causes the gears in the Torsen differential to bind together. The design of the gears in the differential determines the torque bias ratio. For instance, if a particular Torsen differential is designed with a 5:1 bias ratio, it is capable of applying up to five times more torque to the wheel that has good traction.
These devices are often used in high-performance all-wheel-drive vehicles. Like the viscous coupling, they are often used to transfer power between the front and rear wheels. In this application, the Torsen is superior to the viscous coupling because it transfers torque to the stable wheels before the actual slipping occurs.
However, if one set of wheels loses traction completely, the Torsen differential will be unable to supply any torque to the other set of wheels. The bias ratio determines how much torque can be transferred, and five times zero is zero.
07-25-2007, 06:50 AM
#22
there is a good Wiki on the LSD types.
one comment on clutch LSD's is way off "They are also the only commonly available LSD able to stand up to extreme motorsport abuse." The torsen has been used extensively in motor sport for years so I reckon the design is tried and tested for motor sport.
Ferrari used torsen diffs for years, but they probably have more advanced LSD these days. there are some advanced torsen designs although they are normally a motor sport only option.
one comment on clutch LSD's is way off "They are also the only commonly available LSD able to stand up to extreme motorsport abuse." The torsen has been used extensively in motor sport for years so I reckon the design is tried and tested for motor sport.
Ferrari used torsen diffs for years, but they probably have more advanced LSD these days. there are some advanced torsen designs although they are normally a motor sport only option.
07-25-2007, 07:30 AM
#23
Hmmmmmm.........
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Dave, takas tyres are are road legal semi slicks. I have been driving around on my Toyo R888s for about 4 months now. They are great on the dry road and not to shabby on the wet, but they are ridiculously loud.
The reason I am changing the front is that it is ill fitting, badly painted ad as far as I am concerned (and have been advised) its beyond repair. The skirts and rear end are not to bad.
The reason I am changing the front is that it is ill fitting, badly painted ad as far as I am concerned (and have been advised) its beyond repair. The skirts and rear end are not to bad.
07-25-2007, 08:39 AM
#24
'06 Nats coolest car!
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Well folks, I'm doing a rather major mod - replacing the entire car. I wish I didn't have to, but it's time to move on. Ownership and friendships have been awesome!
I'm picking up the VW Eos 2.0 turbo DSG tomorrow...
Will
I'm picking up the VW Eos 2.0 turbo DSG tomorrow...
Will
