Fj80 axle/coil swap

GLTHFJ60 · 02-02-09, 03:53 PM

Quote:

Originally Posted by Mor4wd

I haven't been able to find a stock height replacement Got a link? I'm also concerned that the springs I have on now may be sagged being that the are 14 years old. So even a stock hight replacement would give me some lift that I don't want?
Thanks for the info on tcase gears. What years had the 1.96:1/2.48:1? Would it make for much of a reduction and are the gears a direct swap? I checked out the marks gears set. Very expensive!

Generally, only split cases that came mated to either the H41 or H55 had the 1.96/1 ratio. The H42 factory split cases had the 2.48/1 ratio.

Mor4wd · 02-02-09, 04:13 PM

And my '85 has which case? The H42 correct? Which means that I already have the 2.48:1?

Quote:

Originally Posted by GLTHFJ60

Generally, only split cases that came mated to either the H41 or H55 had the 1.96/1 ratio. The H42 factory split cases had the 2.48/1 ratio.

GLTHFJ60 · 02-02-09, 04:14 PM

Assuming it's a US cruiser then it has the H42 tranny and the lower split case, so yeah!

Mor4wd · 02-02-09, 04:25 PM

Well crap. That got me excited, it seemed like a decent low cost reduction.

Quote:

Originally Posted by GLTHFJ60

Assuming it's a US cruiser then it has the H42 tranny and the lower split case, so yeah!

Tapage · 02-02-09, 05:21 PM

Quote:

Originally Posted by Mor4wd

I haven't been able to find a stock height replacement Got a link?

let me llok tomorrow .. in my office I have the OME catalog

Quote:

Originally Posted by Mor4wd

I'm also concerned that the springs I have on now may be sagged being that the are 14 years old. So even a stock hight replacement would give me some lift that I don't want?

probably ..

Quote:

Originally Posted by Mor4wd

Thanks for the info on tcase gears. What years had the 1.96:1/2.48:1? Would it make for much of a reduction and are the gears a direct swap? I checked out the marks gears set. Very expensive!

By the years it's complicated to determinate .. actually was 1.96:1 in my t-case ( HJ60 with H55F ) thought you maybe have the 2.28:1 since you are a gasser .. and jump to 2.48:1 from a auto BF1A makes no really much diference ..

But it's a bolt on swap and it helps a little ..

GLTHFJ60 · 02-02-09, 05:30 PM

Quote:

Originally Posted by Tapage

By the years it's complicated to determinate .. actually was 1.96:1 in my t-case ( HJ60 with H55F ) thought you maybe have the 2.28:1 since you are a gasser .. and jump to 2.48:1 from a auto BF1A makes no really much diference ..

But it's a bolt on swap and it helps a little ..

I thought that it wasn't a matter of what year, but what transmission. I thought the 1.96/1 was for the H41 and H55 with the lower first gear ratio, and the 2.48/1 was for the H42 with the higher first gear ratio.

Tapage · 02-02-09, 06:59 PM

Quote:

Originally Posted by GLTHFJ60

I thought that it wasn't a matter of what year, but what transmission. I thought the 1.96/1 was for the H41 and H55 with the lower first gear ratio, and the 2.48/1 was for the H42 with the higher first gear ratio.

That make totaly sense ..

muddogbob · 02-02-09, 08:49 PM

Cruiser Outfitters

It looks like Kurt lists a .25"-.75" lift coil for the 80 series. You can purchase the rear coils as a pair for $175, and it looks like they might come in different spring rates.

Question: Did you use ballistic fab link brackets? Are you using adjustable height upper coil buckets in the rear?

~Bob

Mor4wd · 02-02-09, 10:38 PM

Thanks. Though I suspect a .25" lift coil would raise it around 1" and the rear is already slightly higher than the front. I think Ill have to keep looking, I dont know.

Yes, Ballistic Fab link brackets for uppers and some custom brackets for the lowers. The coil buckets 'were' adjustable but due to the limited space I welded them in. The only room for adjustment was down, meaning it would lift the vehicle and I don't plan on ever going higher.

Quote:

Originally Posted by muddogbob

Cruiser Outfitters

It looks like Kurt lists a .25"-.75" lift coil for the 80 series. You can purchase the rear coils as a pair for $175, and it looks like they might come in different spring rates.

Question: Did you use ballistic fab link brackets? Are you using adjustable height upper coil buckets in the rear?

~Bob

Tapage · 02-03-09, 10:18 AM

maybe a factory OEM replacemet could do the job .. ask Dan for the cost ( I hope aren't out of the world )

Dirtgypsy · 02-03-09, 10:53 AM

this thing is just sick !! i vote silver wheels. very nice work.

clint

Mor4wd · 02-14-09, 01:24 PM

A short snow run(blew a power steering hose and had a leaking tranny cooler line. Fun while it lasted. Oh yeah, broke a tail light too, dammit.

Mor4wd · 02-14-09, 01:26 PM

..........

GLTHFJ60 · 02-15-09, 11:19 AM

That tail light sucks, but what are you gonna do.

I gotta widen my axles.

Cruisified · 02-15-09, 12:21 PM

That's a sexy beast.

krookedpandas · 02-15-09, 12:22 PM

That is awesome! As for the tail light, kinesio tape will hold it back together

Mor4wd · 02-17-09, 02:58 AM

Thanks, I used some clear epoxy, almost cant tell.

Quote:

Originally Posted by krookedpandas

That is awesome! As for the tail light, kinesio tape will hold it back together

dgfj40 · 02-19-09, 10:33 PM

do you have any pictures of your front diff centre tanks

Mor4wd · 02-19-09, 11:07 PM

Quote:

Originally Posted by dgfj40

do you have any pictures of your front diff centre tanks

What exactly would you like to see?

For an update: I have a new vibration, which wasn't there just last week. Drive-shafts haven't been changed so I think I can rule them out. Although the front shaft does have a little bit of play at the splines, normal? The rear is tight.
The vibration is there in 2wd so I don't think thats the cause anyway. I'll pull it tomorrow to see if it makes any difference.
Maybe its in the transfer case. It may need a rebuild. Any iedas?

Tapage · 02-20-09, 07:27 AM

isolate the front and the rear DS .. u-joints .. ?

rdublt1 · 02-21-09, 04:15 PM

Looks Great Aaron! I like the look of the silver wheels too.

For low range I think the best route would be to do the NP203 to splitcase. I know you said you want the least amount of work but unless you want to drop some serious coin on Mark's gears (and have less reduction) any road you take will be work. You could also go ORION or ATLAS if you don't have room for the 203. If you go ORION or ATLAS Sell the splitcase adaptor & splitcase to get some cash for that conversion. Have you already re-geared the axles? Maybe that would get you enough low range.

OH- and I got the wheels mounted up and tested them out. Thanks Man!

Randalls big air on Flickr - Photo Sharing!

fjman · 02-21-09, 05:18 PM

This build is awesome. How tall are the tires?

Mor4wd · 02-21-09, 05:26 PM

Quote:

Originally Posted by rdublt1

Looks Great Aaron! I like the look of the silver wheels too.

For low range I think the best route would be to do the NP203 to splitcase. I know you said you want the least amount of work but unless you want to drop some serious coin on Mark's gears (and have less reduction) any road you take will be work. You could also go ORION or ATLAS if you don't have room for the 203. If you go ORION or ATLAS Sell the splitcase adaptor & splitcase to get some cash for that conversion. Have you already re-geared the axles? Maybe that would get you enough low range.

OH- and I got the wheels mounted up and tested them out. Thanks Man!

Randalls big air on Flickr - Photo Sharing!

Wheels look great, I still like that look a lot. Nice air too!
Thanks for the info, I think I've decided to drop in 5.29s in the diffs, so after that is complete I'll re-evaluate lower tcase gears. I thought the Atlas was for a centered rear axle only?

Tires are 38.7x13".

rdublt1 · 02-22-09, 06:56 AM

Quote:

Originally Posted by Mor4wd

Thanks for the info, I think I've decided to drop in 5.29s in the diffs so after that is complete I'll re-evaluate lower tcase gears. I thought the Atlas was for a centered rear axle only?

80 series rear axles are not that far off center (compared to 40 & 60 axles). I doubt you would have any problem running an ATLAS. I know a guy that ran an np205 with NV4500 in his FJ40. He daily drove it & claimed not to have any vibration (and that is a short rear drive shaft).

I think you are going down the right road with the re-gear first. Even with your monster power I'd bet with those new tires it just aint the same! Once you re-gear I expect a video of you roasting those rears!

Mor4wd · 03-23-09, 06:47 PM

Had a few hours to work on the truck. I couldnt stand looking at the frame horns anymore so I stared this....Not sure yet if I like the design, something about the wings on either side, Ill keep messing with it.

GLTHFJ60 · 03-23-09, 06:50 PM

I love it!! It's got a good smile going.

ntsqd · 03-23-09, 07:29 PM

Harder to execute, but I think that I'd want to follow the lines of the lower valence panel. Would make it sort of an inverted version of the prop-driven F-4 Corsair's wings.

Did you cover what those lights in the valance are and do?

Mor4wd · 03-23-09, 07:44 PM

Quote:

Originally Posted by ntsqd

Harder to execute, but I think that I'd want to follow the lines of the lower valence panel. Would make it sort of an inverted version of the prop-driven F-4 Corsair's wings.

Did you cover what those lights in the valance are and do?

Thats kinda what I was thinking. Maybe Ill mock something like that up.
The lights are HID driving lights, I love them.