NP203 conversion kits - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 10-05-2004, 09:33 PM
K5Blazerman77
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NP203 conversion kits

I have recently bought a mile marker "make your own shaft type conversion kit" with locking hubs for my '77 K5 Blazer with a NP203. I brought it in to a shop that has put on about 25 of these and they said they don't recommend these kits because 2/3 of them came back for repairs on the transfer case. Have you ever heard of problems with the kits. I have also heard about rear output shaft kits for these. At 17 I have already learned about pouring a lot of money into your project. <font color="black"> </font color>
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post #2 of (permalink) Old 10-06-2004, 04:35 AM
 
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Re: NP203 conversion kits

How much do you plan to do with this blazer? as in hard 4 wheeling or just moderated or hardley at all???
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post #3 of (permalink) Old 10-06-2004, 08:12 PM
K5Blazerman77
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Re: NP203 conversion kits

i plan to drive it in town and use it hunting, and also just a little 'wheeling but not like 12 inch lift and 44"s at the most 35"s
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post #4 of (permalink) Old 10-08-2004, 03:12 AM
 
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Re: NP203 conversion kits

The only problem i had with my kit is i built my shift folk in the tranffer case with a welder so it would engage completely abd i also have 14" of lift and 44"x18.5" and it does not have a problem.
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post #5 of (permalink) Old 10-10-2004, 03:33 PM
K5Blazerman77
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Re: NP203 conversion kits

how long have you had the kit? is it the one that replaces the gears? i wonder if the local shop is just lazy, u'd think they'd want more money. i want the kit installed though so i will bring it some where else.
post #6 of (permalink) Old 10-11-2004, 12:20 AM
 
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Re: NP203 conversion kits

i guess i have had the kit 4 years or so and i am not easy on my stuff i built my truck to play with and that is what i do is play hard and it is the kit that replaces the gears. it is just a peace to join the shaft and the other gear together it is hard to explaine but there you go good luck
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post #7 of (permalink) Old 10-12-2004, 06:45 PM
K5Blazerman77
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Re: NP203 conversion kits

i heard the bad part is that the NP203 is chain driven and replacing the gears stops the chain which brings the lube to the main shaft and with no chain moving the shaft burns up and damage occurs. too keep it oiled u have to over fill the case or drive around in 4wheel drive at least once a week to keep it oiled
post #8 of (permalink) Old 10-13-2004, 02:45 AM
 
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Re: NP203 conversion kits

all you have to do is fill it up like normal and you will not have any trouble i kick mine into 4x4 every month or two if i have not used it to keep my u joints good. But like i said i have had this kit for 4 years and have never burnt any thing up so i guess it is up to you but good luck let me know with you find any more out or what you do .
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post #9 of (permalink) Old 10-14-2004, 05:59 PM
K5Blazerman77
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Re: NP203 conversion kits

yep thanks for the help
post #10 of (permalink) Old 10-15-2004, 11:04 PM
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Re: NP203 conversion kits

I used the one made by doug nash its a solid one piece
shaft and was running a 454 with 36s and i was very heavy
on the throttle never had any problems with it. but it was
more expensive than the milemarker. But i dont know if
doug nash is even around anymore or was bought out.
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