| Author | Topic |
|---|
Registered:
April 2004
|
|
RA60 Kaaz 2way diff question.
|
Mon, 17 October 2005 01:15
|
 |
I recently was fortunate enough to get in on the Kaaz 2 way group buy which is now in my RA60 and doing a farking good job. The major problem I am having is that I am smashing the pinion in the diff more often then I have to do an oil change. I have gone through 3 pinions in 4 months and I was wondering if there was anything I could do. The car dosnt get driven to hard, just that the pinion seems like the weakest link.
If anyone has any good ideas or can suggest to me an idea plz let me know. On the other hand if any one with a kaaz from the recent group buy has a similar problem, let me know what u have done to fix it.
Cheers boys
Ryan
|
|
|
Location:
Newcastle
Registered:
May 2004
|
|
Re: RA60 Kaaz 2way diff question.
|
Mon, 17 October 2005 01:29
|
|
an expencive option, but im sure it will be up to the task, is buying a techno pro spirit crown and pinion, these sell for around $600 and u can get them in heaps of different ratio's. i thnk trd also make a couple, but are twice as expencive.
Chris
|
|
|
Registered:
April 2004
|
|
Re: RA60 Kaaz 2way diff question.
|
Mon, 17 October 2005 01:34
|
|
|
where abouts can u get these from mate, cuz if they wil do the job 600 seems to be a fair price. cheers
|
|
|
Location:
Brisbane
Registered:
May 2002
|
|
Re: RA60 Kaaz 2way diff question.
|
Mon, 17 October 2005 02:12
|
|
|
Going by your sig you have a modified 1G-GTE in your RA60. A T series diff is never going to last long with that sort of power no matter what you do; it's simply too small and weak. Either upgrade to something bigger (eg F series) or get used to swapping diffs.
|
|
|
Location:
Newcastle
Registered:
May 2004
|
|
|
Location:
Canberra
Registered:
June 2005
|
|
Re: RA60 Kaaz 2way diff question.
|
Mon, 17 October 2005 03:08
|
|
Ryan,
If you will be needing to upgrade to a bigger diff, I have need for an LSD for the T series diff as it will be fine behind my NA 3S-G when I finish the car.
I have e-mailed several Australian suppliers/Importers of these diffs but their responses are lacking and I need to buy soon.
Chris,
Does the $600 for ring and pinion include shipping from Japan?
Regards
Rodger
|
|
|
Registered:
April 2004
|
|
Re: RA60 Kaaz 2way diff question.
|
Mon, 17 October 2005 04:11
|
|
yeah its a t series diff, hmmmmmm, well ill c waht i can do. Will look in to getting a stronger crown and pinion though.
|
|
|
Location:
Brisbane
Registered:
May 2002
|
|
Re: RA60 Kaaz 2way diff question.
|
Mon, 17 October 2005 04:35
|
|
The only way to significantly increase the strength of the C&P is to make it larger. The T series diff has a 6.7" C&P, so no matter what you do it will be small and pissweak.
I know you probably don't want to sell the T series LSD centre you just bought, but there's no point throwing good money after bad.
|
|
|
Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
|
|
Re: RA60 Kaaz 2way diff question.
|
Mon, 17 October 2005 05:23
|
|
| bbdond wrote on Mon, 17 October 2005 11:15 |
The car dosnt get driven to hard, just that the pinion seems like the weakest link.
If anyone has any good ideas or can suggest to me an idea plz let me know. On the other hand if any one with a kaaz from the recent group buy has a similar problem, let me know what u have done to fix it.
|
if the car is not being driven hard, then it sounds like the pinion and crown are not set up properly to begin with..
it is also entirely possible that the crown wheel is not "true" on the LSD carrier, and so it's putting remarkable forces and wear on the poor pinion (which will probably fail before the crownwheel)
are you just swapping in pinions? or swapping pinion and crown as a set?
they need to be kept as a finely matched set if possible, or slowly and carefully run in, or they will die...
first things first, check the runout of the crownwheel on the LSD carrier.. my bet is that it is not running true... or that the pinions position is incorrect
|
|
|
Location:
Newcastle
Registered:
May 2004
|
|
Re: RA60 Kaaz 2way diff question.
|
Mon, 17 October 2005 12:35
|
|
| Norbie wrote on Mon, 17 October 2005 14:35 |
The only way to significantly increase the strength of the C&P is to make it larger. The T series diff has a 6.7" C&P, so no matter what you do it will be small and pissweak.
|
i beg to differ on this point, for starters, from what ive seen of t series crown and pinion gears, they look like mild steel. 20 years old at that. If the techno pro spirit ones are made from stainless steel, or hardened steel of some sort, they will be 2 or more times stronger than standard, that said i have no idea what there made from, but i certinally dont think that bigger is the only way to significantly increase strength. Just need the use of better materials. However - the next problem knowing u are running a kaaz (strong diff) is the t-18 axles, there matchsticks.
edit: Rodger, yeah it will be $600 or less, for a 4.5:1 = $411 + shipping, so more like $500 to your door. 4.3:1 = $500 + shipping, so around $600 to your door, only a guess, email greenline if u want real prices.
Chris
[Updated on: Mon, 17 October 2005 12:51]
|
|
|
Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
|
|
Re: RA60 Kaaz 2way diff question.
|
Mon, 17 October 2005 13:20
|
|
| chrisellis wrote on Mon, 17 October 2005 22:35 |
i beg to differ on this point, for starters, from what ive seen of t series crown and pinion gears, they look like mild steel. 20 years old at that. If the techno pro spirit ones are made from stainless steel, or hardened steel of some sort, they will be 2 or more times stronger than standard, that said i have no idea what there made from
|
oh dear.. we didn't think that thru did we 
stainless steel?? 
all diff and pinion gears are made from (roughly) medium to high carbon, heat treated steel. stainless steel can be very soft, and doesn't respond in the same way to heat treatment as steel which does not have significant amounts of chromium or nickel.. indeed stainless steel usually has low amounts of carbon due to the chromium content....
i beg to differ with you. i do not think these aftermaket gears have significantly greater strength or wear properties. that said, advances in metallurgy in the last 20 years may have filtered down to gears, but they are not exactly a high tech item  so if they are better, it is only slightly.
it is highly likely they are made by the same factory as OEM parts anyway . the main benefit is that they are new, have not been shockloaded yet, and you get to wear them in properly.
| chrisellis wrote on Mon, 17 October 2005 22:35 |
but i certinally dont think that bigger is the only way to significantly increase strength. Just need the use of better materials. However - the next problem knowing u are running a kaaz (strong diff) is the t-18 axles, there matchsticks.
edit: Rodger, yeah it will be $600 or less, for a 4.5:1 = $411 + shipping, so more like $500 to your door. 4.3:1 = $500 + shipping, so around $600 to your door, only a guess, email greenline if u want real prices.
Chris
|
hmm, T18 axles are not that small, but with a 2 way diff that acts almost like a locker on both accel and decel... either the tyres slip, the LSD slips... or the axles break,.. choose 1.
given that materials of most available parts are of similar quality, bigger certainly is better, particularly with crown and pinion gears, spider gears, axles, etc... small things, which with a small increase in size, result in a much stronger part.
price for posting gears (that i sent from japan recently) was around $125 for airmail. also many japanese companies do not like to send parts overseas due to payment hassles... (or respond to english emails )
30,000yen gears on yahoo auctions = about $500-550 landed with no tax. duty and tax is another 20%ish...
Cya, Stewart
|
|
|
Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
|
|
Re: RA60 Kaaz 2way diff question.
|
Mon, 17 October 2005 13:24
|
|
| Norbie wrote on Mon, 17 October 2005 14:35 |
The only way to significantly increase the strength of the C&P is to make it larger. The T series diff has a 6.7" C&P, so no matter what you do it will be small and pissweak.
I know you probably don't want to sell the T series LSD centre you just bought, but there's no point throwing good money after bad.
|
i agree totally.. 7.5 vs 6.7 is a very large jump in size...
and if you get a trutrack ... mmm torsen goodness..
there will always be some dorifto schmuck who will buy your Kaaz.. and even a small loss will be better in the long run after you get the bigger diff and stop breaikng parts
|
|
|
Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
|
|
Re: RA60 Kaaz 2way diff question.
|
Mon, 17 October 2005 13:25
|
|
but i still say check the alignment and setup first.
can you take pictures of some of the broken pinion gears? did it fail from low or high cycle fatigue? or simply from overloading? (int hat case, britle or ductile failure?)
|
|
|
Location:
Newcastle
Registered:
May 2004
|
|
Re: RA60 Kaaz 2way diff question.
|
Mon, 17 October 2005 14:14
|
|
thanks for the info, i will stand quite corrected in regards to some of my previous statements, would like to know what the techno pro spirit ones are made of though. T-18 axles are damn small, seriously, too small for the power this guys car is putting out. Another option to add in the list is twisting axles.
In regards to the greenline stuff, they have an australian distributor, so email australia@greenline.jp and you will have no problems getting a price delivered to your door, and he has answered every one of my emails in english, and shipping only took a few days from japan.
|
|
|
Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
|
|
Re: RA60 Kaaz 2way diff question.
|
Mon, 17 October 2005 14:21
|
|
| chrisellis wrote on Tue, 18 October 2005 00:14 |
thanks for the info, i will stand quite corrected in regards to some of my previous statements, would like to know what the techno pro spirit ones are made of though. T-18 axles are damn small, seriously, too small for the power this guys car is putting out. Another option to add in the list is twisting axles.
In regards to the greenline stuff, they have an australian distributor, so email australia@greenline.jp and you will have no problems getting a price delivered to your door, and he has answered every one of my emails in english, and shipping only took a few days from japan.
|
fairy nuff 
LOL, aussie dist. makes a world of difference be interesting to see what they rate their gear compared to the cheaper TRD diff gears on yahoo... (although they don't do the normal gearsets it seems, just 4.556 and 4.778)
|
|
|
