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mlclarkModerator
Isuzu Moderator


Reged: 04/11/00
Posts: 7267
Loc: Ventura County
Re: Make Tera differential gears a reality - group buy
      #264175 - 01/11/02 01:13 AM

Well, available yes, but at ~$600 a gearset straight from Isuzu (the only place to get them next to a lucky find in the junkyard), I personally don't consider them much of an option.

You are right. I also know and I understand where you are coming from. I never said they were cheap. But they are available. So are 4.55's. Going from 4.10's to 4.55's would accommodate 31in to 33in tires. 4.30's to 4.55's would also accommodate 31in to 33in tires. So it is doable and there are options. It goes back to Isuzu's choice to gear rather low to start with.

You do make a lot of good points Michael. I agree that you can't make a single gear set that accommodates everybody. With that in mind, I'm interested in the ratio the most people would want to make this thing happen. Once it does, maybe then Tera will look at offering additional ratios.

I hope they do. Not only because I would like to see a lower ratio, but it would also say that much more for Tera's desire to serve the customer.

Michael

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Roadends
Wheeler


Reged: 09/05/00
Posts: 202
Loc: Valley Springs, Calaveras Coun...
Re: Make Tera differential gears a reality - group buy
      #264176 - 01/11/02 02:42 PM

Thanks Steve, Michael and Rob for the replies and assistance.

My deposits are in for a 10 bolt and a 12 bolt.

As for the "installation kits", what do these consist of?

Kim

--------------------
Kim
'99 2wd Rodeo LS, '90 4x4 Isuzu Pick up


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Anonymous
Unregistered




Re: Make Tera differential gears a reality - group buy
      #264177 - 01/11/02 03:18 PM

quote:
Originally posted by mlclark:

Lower is better and by the time you are ready to step into the 5.xx ratios, you have decided that the primary purpose of you rig is to wheel. I would take a bit lower top MPH (the engine will wind out sooner) for a low as possible crawl ratio.

Ideally, as others have mentioned, whatever it ends up to be, it might as well match one of the other ratios (Dana, Toyota, ect).

Michael


Not to muddy the waters here, but isnt there a point of deminishing returns where lower is not necessarily better. Lower means smaller thus weaker gears, add on top of that the larger heavier tires, and you have a recipe for destruction. Also if you go too high, wouldnt the question of driveline vibration and exccessive wear of driveline and engine components come into play. I think we have to consider this before can say lets just get the lowest gears possible as the R&P are our daily driving gears and this will have a considerable impact on the longevity of our vehicles. This should be a concern to us all because none of us have trailer queens and the majority of us use our rigs as daily drivers. Also we have to take into effect that these will effect only those with IFS and so we have to gear appropriatly to the max tire capacity of the CV's which at this point seems to be 33 - 35 inch tires.

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matthew
Body Damage is Cool


Reged: 01/04/00
Posts: 1656
Loc: Richmond, VA
Re: Make Tera differential gears a reality - group buy
      #264178 - 01/11/02 03:22 PM

i guess my feeling is also that...in the long scheme of things.....once gears are available the lift that exceeds 3" will not be far behind.

gears are extremely important in that no company would make a 4,5,6,8,12" kit for a truck that can't power the tire you would be able to put on it.

35's are not unreasonable for Isuzus. in fact they look quite good w/ the proportions of the trucks. there are a number of people who have put them on their rigs sucessfully.

and TSL has some other cool new sizes like 34x10.50, or you could run smaller wider tires like 33x15.50's.

we are just raising the bar a little.

really 5.13 and 5.38 are not really that different. Kinda like 4.56 and 4.77.....

i have 5.38's so i can vouch for that raio.

i would have never paid the cash to re-gear to 4.77....doesn't make sense to me for such a nominal gain. (which sounds like the $600 quote above is pretty high.....the going rate on the east coast is like $375-450)

bottom line either ratio would be a HUGE step in our aftermarket! lets make this happen guys.

Matt

--------------------
'93 RS 3.2L - DD/trail build
'97 7.3L Powerstroke - tow rig
'71 FJ40 - V-8, nv4500, atlas, D60, 14B - current build

Owner: http://www.INDEPENDENT4x.com

m-f 9am-6pm EST. 804-550-0480


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matthew
Body Damage is Cool


Reged: 01/04/00
Posts: 1656
Loc: Richmond, VA
Re: Make Tera differential gears a reality - group buy
      #264179 - 01/11/02 03:38 PM

quote:
Originally posted by Bulldog:
Not to muddy the waters here, but isnt there a point of deminishing returns where lower is not necessarily better. Lower means smaller thus weaker gears, add on top of that the larger heavier tires, and you have a recipe for destruction. Also if you go too high, wouldnt the question of driveline vibration and exccessive wear of driveline and engine components come into play. I think we have to consider this before can say lets just get the lowest gears possible as the R&P are our daily driving gears and this will have a considerable impact on the longevity of our vehicles.

again i would say you can't have your cake and eat it too. you get to a point where you make a choice.

meaning you are talking about a SERIOUS modification to your vehicle. the trucks w/ 10/12 bolt or 10/d44 axle combos are the older amigo, trooper, pup, and Rodeo.

now we are talking about oloder vehicles retailing for 6k or less many less than 3-4k. so the above quote for re-gear and locker was $1800, then factor in a lift and tires....another at least $1500 so basically the entire price of the vehicle in some cases.

as the trucks get cheaper...many of the 88-91 troopers are $800-2500 now, people can choose these as a buildable trail rig if the aftermarket parts are available.


as far as wear and breakage......anything can break........wheeling is hard on the components of a vehicle by nature. most of these trucks would need another 60 or 80 hp and heavy feet to start breakin stuff.

nah, you know what i mean.

Matt

--------------------
'93 RS 3.2L - DD/trail build
'97 7.3L Powerstroke - tow rig
'71 FJ40 - V-8, nv4500, atlas, D60, 14B - current build

Owner: http://www.INDEPENDENT4x.com

m-f 9am-6pm EST. 804-550-0480


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matthew
Body Damage is Cool


Reged: 01/04/00
Posts: 1656
Loc: Richmond, VA
Re: Make Tera differential gears a reality - group buy
      #264180 - 01/11/02 04:15 PM

oh and the 4.77's that CP had and a few others have gotten from Isuzu to re-gear were like $219 for the D44 and $235 for the 10 bolt.


Matt

--------------------
'93 RS 3.2L - DD/trail build
'97 7.3L Powerstroke - tow rig
'71 FJ40 - V-8, nv4500, atlas, D60, 14B - current build

Owner: http://www.INDEPENDENT4x.com

m-f 9am-6pm EST. 804-550-0480


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Anonymous
Unregistered




Re: Make Tera differential gears a reality - group buy
      #264181 - 01/11/02 04:17 PM

That's funny Matt. I bought my current Trooper for a whopping $700!!! I had a new one in '91 with a $17,500 sticker on it. I think I like the $700 model better. Nooooo worries.

Chad at Tera just got back to me. I'm in for (1) 10 bolt and (1) 12 bolt. Weeeeeeee!!!

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Anonymous
Unregistered




Re: Make Tera differential gears a reality - group buy
      #264182 - 01/11/02 05:46 PM

quote:
Originally posted by matthew:
again i would say you can't have your cake and eat it too. you get to a point where you make a choice.

meaning you are talking about a SERIOUS modification to your vehicle. the trucks w/ 10/12 bolt or 10/d44 axle combos are the older amigo, trooper, pup, and Rodeo.

now we are talking about oloder vehicles retailing for 6k or less many less than 3-4k. so the above quote for re-gear and locker was $1800, then factor in a lift and tires....another at least $1500 so basically the entire price of the vehicle in some cases.

as the trucks get cheaper...many of the 88-91 troopers are $800-2500 now, people can choose these as a buildable trail rig if the aftermarket parts are available.


as far as wear and breakage......anything can break........wheeling is hard on the components of a vehicle by nature. most of these trucks would need another 60 or 80 hp and heavy feet to start breakin stuff.

nah, you know what i mean.

Matt



Well Mathew,
Unfortunately some of us are running 2nd Gens that we owe money on. I got a deal on mine at $17,999 but its still a $24,000 vehicle after interest and about $35k with all the mods invested,so I do still care about longevity. I still believe that those who are jumping in on this are concerned about the wear and tear of their daily drivers and thus opt for the Tera gears as opposed to the truly hardcore SAS option. This whole setup is so that I can get my small cake and eat it too. When I am ready to get the Big SAS cake and go hungry is after my rigs paid off

As to the 5:38 gearing. If your experience tells you its pretty strong then I would have no objections running them.

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Anonymous
Unregistered




Re: Make Tera differential gears a reality - group buy
      #264183 - 01/11/02 07:45 PM

Well just to add my 2c I would like 5.38's but I put down my deposit for the 5.13's. As Matt says either would be great but I would rather have 5.38's....

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RobG
Roll Me Over


Reged: 09/23/00
Posts: 4277
Loc: Winston-Salem, NC, USA
Re: Make Tera differential gears a reality - group buy
      #264184 - 01/11/02 09:46 PM

latest word from Tera was (4) 10-bolt deposits and (3) 12-deposits on record as of this morning. Excellent work so far guys, keep the deposits rolling in. The more we continue to get, the easier it becomes to talk others into hopping on the ole bandwagon.

As for the 5.13 vs. 5.38 debate, Tera is open to what we decide as a group. The development has been done for 5.13s but would only take a week to redo for 5.38s, so no biggy. It sounds like there is a pretty overwhelming push for 5.38s, which is definitely ok with me, we just need to make sure thats okay to those that already have deposits since the offer was orignally presented as 5.13. Anyways, as matt said, in the long run, the ratios are so close its really not worth getting too upset about. Having either ratio available for Isuzu would be a monumental step forward.

So lets continue with the 5.38 discussion and see if thats what everyone really wants, Tera is leaving it up to us to decide what we want as a group (incrediable flexibility on Tera's part if you ask me). In the meantime, keep sending in deposits!


-Rob

--------------------
Robert Gorrell
1995.5 Isuzu Rodeo - SAS'd and SOA'd, sitting on 38x13 TSLs, spooled D60 front, 14bff rear locked by detriot, high steer w/ hydro, dual Isuzu tcases.


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