Gear install - Bearing kits (y/n)?

Heratik · Feb 11, 2008

I'm going to rebuild my rear end with 3.73's and I'm trying to decide if it's worth it replace the bearings with the FRPP kits (M-4210-B and M-4413-A). Normally I'd simply error on the side of caution and just buy the bearings but cash is a little tight right now and I'd prefer to use the old bearings unless it's strongly recommended to get new ones.

COramprat · Feb 11, 2008

Might as well replace while you have it down. Save another week or so before you do the work.

blackfang · Feb 11, 2008

Save the time and do it while you are in there.

GettinThere · Feb 11, 2008

How many miles on your car? Are you switching from 3.55 to 3.73?

bigcat · Feb 11, 2008

i had 27k on mine and replaced them. get the B kit and call it good.

BennyBlown2v · Feb 11, 2008

YES get new bearings, for sure! Honestly though, I would keep the 3.55's, you won't notice much of a difference between them and 3.73's. Plus, if you make power down the line, you'll want the 3.55's over anything smaller.

blackfang · Feb 11, 2008

I would 4.10's, but that is me.

fobra559 · Feb 11, 2008

Yes get the bearing kit, it will save you time and effort down the road. Mine as well when you down there, kill 2 birds with 1 stone.

ErikTheBeast · Feb 11, 2008

Get the kit. Do it once and do it right.

bdcardinal · Feb 11, 2008

replace all bearings, cups, and seals. install the main studs for the caps, buy a girdle. do the job right or dont bother doing it at all.

CobraRed_96_GT · Feb 11, 2008

Ima be the outcast here and say buy the kit but dont put it on until you inspect the bearings and seals. I had my master kit ready to go in until the tech and i saw the bearings and accompanying parts looked and acted about 6 months old. reused the parts, sold the kit. Havent had a problem after 17k miles or so

forum155pl · Feb 11, 2008

Yep do it... dont use knock off berings either.. i used some napa knock offs and i burned up 2 of em.. went to all timkin bearings and had no more problems!

Heratik · Feb 11, 2008

You guys are right, I'm never going to feel like dropping the whole sub frame assembly should a bearing go bad. I think I'll still get the 3.73's since I'm pretty sure my 3.55's are thrashed anyway. They seem like a good compromise between performance and retaining some highway driveability and gas mileage. I think the pinion depth was setup incorrectly, consequently they clank, clunk, and whine. After a year of driving on them like that I'm sure they've got to be hit.

bdcardinal · Feb 11, 2008

use either timkin, FRPP or ford OEM.

bdcardinal · Feb 11, 2008

wait, just saw it was an IRS. ya do all the bearings. install a diff cooler if you have the coinage. the way the exhaust is routed tends to lead to premature failure of the diff clutches(even the carbon fibre ones) when driven hard.

03ghoststang · Feb 11, 2008

i will agree with the others that posted above me and say replace the bearings.

Gear install - Bearing kits (y/n)?

Heratik

New Member

COramprat

...I can take it. I think.

blackfang

GettinThere

Member

bigcat

start with the upper hole, and if more traction is

BennyBlown2v

New Member

blackfang

fobra559

At least it's more erect and not floppy anymore.

ErikTheBeast

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bdcardinal

tree hugger

CobraRed_96_GT

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forum155pl

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Heratik

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bdcardinal

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bdcardinal

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03ghoststang

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Gear install - Bearing kits (y/n)?

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...I can take it. I think.

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At least it's more erect and not floppy anymore.

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