4.88 3rds in a 85?

SpecialScottie · 08-24-2008, 05:29 PM

I know this has probablly been beaten to death but I cant seem to find the answer.
Will 4.88 3rds off a v6 fit in a 85 4cyl 4runner?

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**DeathCougar** · 08-24-2008, 05:45 PM

YES they will fit. Any Toyota third from 79-95 will fit

SpecialScottie · 08-24-2008, 05:47 PM

Thank you once again Death Cougar

**DeathCougar** · 08-24-2008, 05:48 PM

One thing tho, you will have to make sure the flange will match up to your drivelines. Toyota used 3 different bolt patterns on their flanges (hence the triple drilled flange Marlin sells) so before you install it, just check to make sure your driveline matches.

TrikeKid · 08-25-2008, 11:56 AM

Quote:

Originally Posted by DeathCougar

One thing tho, you will have to make sure the flange will match up to your drivelines. Toyota used 3 different bolt patterns on their flanges (hence the triple drilled flange Marlin sells) so before you install it, just check to make sure your driveline matches.

And if it doesn't match, don't swap the flanges out, you WILL ruin the setup on the gears. You can rotate the driveshaft 90 degrees and drill new holes though.

4runner Freak · 08-25-2008, 12:05 PM

Quote:

Originally Posted by TrikeKid

You can rotate the driveshaft 90 degrees and drill new holes though.

Actually, you would want to rotate it either 30deg (for room to drill all three different patterns) or 45deg (for just two patterns)

**DeathCougar** · 08-25-2008, 12:15 PM

Yea, 90 degrees will get you to the next hole on a 4 hole setup

SpecialScottie · 08-25-2008, 12:41 PM

Why couldnt I use the tripple drilled flange that Marlin sells?

**DeathCougar** · 08-25-2008, 01:09 PM

You can, but you would have to get the diffs rebuilt. Reason being the crush sleeve to set the pinion depth. Once you take it apart, you have to replace that crush sleeve of it can loosen up and KABOOM your diff is toast.

Wardamneagle · 08-26-2008, 04:50 AM

Quote:

Originally Posted by DeathCougar

YES they will fit. Any Toyota third from 79-95 will fit

The rear from a V6 will fit but I don't think the front diff will work. I thought '86 and up were all 7.5" differentials up front (IFS)? An '85 has 8" front and rear.

toyota-erik · 08-26-2008, 05:04 AM

Quote:

Originally Posted by DeathCougar

You can, but you would have to get the diffs rebuilt. Reason being the crush sleeve to set the pinion depth. Once you take it apart, you have to replace that crush sleeve of it can loosen up and KABOOM your diff is toast.

??? Are you serious??? I have swapped/removed flanges on almost every 3rd Ive ever touched and never had a problem. Ive never even heard this before. Acording to what you say, if you even replace the dust cap, you have to rebuild the 3rd. Can you give a good source for this info?

SpecialScottie · 08-26-2008, 10:05 AM

So could I use 2 v6 rears?

grant526 · 08-26-2008, 10:40 AM

Yes. That's exactly what you'll need. 2 rear diffs out of V6 Trucks

**DeathCougar** · 08-26-2008, 10:41 AM

Quote:

Originally Posted by toyota-erik

??? Are you serious??? I have swapped/removed flanges on almost every 3rd Ive ever touched and never had a problem. Ive never even heard this before. Acording to what you say, if you even replace the dust cap, you have to rebuild the 3rd. Can you give a good source for this info?

What are you talking about dust cap? What the hell does that have to do with diffs?

Talk to any diff shop. Hell, call Northwest differential and ask them. If you UNBOLT the flange, you have to reset the pinion depth. Thats just common sense. In order to reset pinion depth, you need to replace the crush sleeve (or just install a solid spacer).

Source? Again, NW Diff, Randys Ring and Pinion, any reputable shop, etc.

Perhaps "rebuild the diff" was the wrong terminology used. But you cannot just simply replace with flange without the RISK (see Potential Problems) of damaging the diff.

SpecialScottie · 08-26-2008, 02:25 PM

Thanks grant 526.
And thanks again DC.
Now I just have to find 2 factory 4.88 3rds

toyota-erik · 08-26-2008, 04:31 PM

Quote:

Originally Posted by DeathCougar

What are you talking about dust cap? What the hell does that have to do with diffs?

There is a dust cap under the flange that helps keep junk out of the pinion seal. If you do any rock crawling, that dust cap has a tendency to get banged up and rub against the housing making a bunch of noise. To replace this, the flange must be removed. If what you say is true, then that cannot be replaced without replacing the crush sleeve and resetting pinion depth.
In the 3rds Im running now, yes I use the solid spacers because coming down hard on a rock would damage the crush sleeve, and screw up the pinion depth.
But like I said, Ive never had any problems just taking the flange off and putting it back on, even on my street yotas. Never heard of anyone else having any problems either.

superjoe83 · 08-26-2008, 04:35 PM

Quote:

Originally Posted by DeathCougar

If you UNBOLT the flange, you have to reset the pinion depth. Thats just common sense. In order to reset pinion depth, you need to replace the crush sleeve (or just install a solid spacer).

your a little off with you terminology, you wont affect pinion depth just by taking off the nut, pinion depth is determined by the shim in between the big pinion bearing and the pinion head, but taking off the nut and reinstalling it with out installing a new crush sleeve may affect pinion bearing preload, the only way the nut would affect depth is if it comes loose and allows the pinion to slide in/flop around

SpecialScottie · 08-26-2008, 05:08 PM

Can anyone confirm whether or not the flange off the v6 3rd member will bolt right up to my stock 85 driveshafts?
Has anyone personally done this swap?

SpecialScottie · 08-26-2008, 07:10 PM

bump

**DeathCougar** · 08-26-2008, 07:24 PM

Quote:

Originally Posted by toyota-erik

There is a dust cap under the flange that helps keep junk out of the pinion seal. If you do any rock crawling, that dust cap has a tendency to get banged up and rub against the housing making a bunch of noise. To replace this, the flange must be removed. If what you say is true, then that cannot be replaced without replacing the crush sleeve and resetting pinion depth.
In the 3rds Im running now, yes I use the solid spacers because coming down hard on a rock would damage the crush sleeve, and screw up the pinion depth.
But like I said, Ive never had any problems just taking the flange off and putting it back on, even on my street yotas. Never heard of anyone else having any problems either.

Ok, so sounds like you and I are esentially on the same page.

Sorry i was thinking bearing dust cap, not the cap thats part of the flange (flange and cap are one piece IIRC?) so you are correct there.

FWIW, solid spacers are the way to go. Then there isn't any question of "did it hurt the sleeve or ?!

And yes, you are right Joe, i mean bearing preload.

Diggity · 08-26-2008, 07:37 PM

I don't know about the flange fitting, but I do know that you may need to do a little grinding on your diff to stuff that V6 ring gear in there. It's really not much, maybe a quarter inch.

When you pull your third you will see a groove in the diff for the ring gear, the V6 ring gear is thicker than on the 4banger, so you'll have to take an angle grinder to it. Don't go nuts, you'll just need to take a little bit off.

You'll figure it out, it's not hard, but I just thought I'd pass along a helpful nugget of information.

SpecialScottie · 08-26-2008, 09:27 PM

No ones put factory 4.88s in a 4cyl truck or runner?

toyota-erik · 08-27-2008, 04:39 AM

Quote:

Originally Posted by DeathCougar

Sorry i was thinking bearing dust cap, not the cap thats part of the flange (flange and cap are one piece IIRC?)

I guess its possible that some are 1 piece although I've never seen one

Wardamneagle · 08-27-2008, 04:53 AM

Quote:

Originally Posted by SpecialScottie

No ones put factory 4.88s in a 4cyl truck or runner?

Factory 4.88 diffs aren't easy to find and you need to find two of them. I can imagine that poses a problem for most with people.

The diffs will fit, trust me. Just find two of them and buy the gaskets for the diffs. You can then lay the gasket on your axle and see if you have to do any grinding. I just installed two TRD elockers in my 1985 and had to do quite a bit of grinding. It isn't difficult but you have to be patient. I'm pretty sure the drive shafts will bolt up but I'm not positive. The TRD elocker diff flanges worked on my 1985 and they are based on a V6 carrier housing.

Good luck.

SpecialScottie · 08-27-2008, 09:45 AM

Thanks Wardamneagle. I was also thinking about going the TRD elocker route.
DId you wire them up or use the cable opperation?

The factory 4.88s only came in 4runners from 90-93 correct? Were they in the 2wd also?

08-24-2008, 05:47 PM	#3 (permalink)
SpecialScottie Registered User Join Date: Jan 2008 Location: Sun Valley, CA Posts: 547	Thank you once again Death Cougar __________________ 02 KLX300 Dual Sported (Daily Driver) 87 Turbo 4runner STOCK 85 4runner: Automatic marlin5.29 elocker rear end. Rola roof rack. 33" BFG KM2's Build Thread 87 4runner (parts) 95 4runner 2wd auto(sold)

08-25-2008, 12:41 PM	#8 (permalink)
SpecialScottie Registered User Join Date: Jan 2008 Location: Sun Valley, CA Posts: 547	Why couldnt I use the tripple drilled flange that Marlin sells? __________________ 02 KLX300 Dual Sported (Daily Driver) 87 Turbo 4runner STOCK 85 4runner: Automatic marlin5.29 elocker rear end. Rola roof rack. 33" BFG KM2's Build Thread 87 4runner (parts) 95 4runner 2wd auto(sold)

08-26-2008, 10:05 AM	#12 (permalink)
SpecialScottie Registered User Join Date: Jan 2008 Location: Sun Valley, CA Posts: 547	So could I use 2 v6 rears? __________________ 02 KLX300 Dual Sported (Daily Driver) 87 Turbo 4runner STOCK 85 4runner: Automatic marlin5.29 elocker rear end. Rola roof rack. 33" BFG KM2's Build Thread 87 4runner (parts) 95 4runner 2wd auto(sold)

08-26-2008, 10:40 AM	#13 (permalink)
grant526 Registered User Join Date: Jan 2008 Location: Sacramento area, Ca Posts: 348	Yes. That's exactly what you'll need. 2 rear diffs out of V6 Trucks __________________ '85 Standard Cab 4.5" HD SuperLift Custom Winch bumper 33x12.50 Mud Rovers Lincoln Locked in the rear; running 5.29s DD's: '87 XJ and '91 Suzuki DR650s Wheel Responsibly, Don't screw it up for the rest of Us. . . ---------------------------------------------------- "Obama is an acronym. OBAMA = One Big Ass Mistake, America" - Thanks for the Quote Hayes

08-26-2008, 02:25 PM	#15 (permalink)
SpecialScottie Registered User Join Date: Jan 2008 Location: Sun Valley, CA Posts: 547	Thanks grant 526. And thanks again DC. Now I just have to find 2 factory 4.88 3rds __________________ 02 KLX300 Dual Sported (Daily Driver) 87 Turbo 4runner STOCK 85 4runner: Automatic marlin5.29 elocker rear end. Rola roof rack. 33" BFG KM2's Build Thread 87 4runner (parts) 95 4runner 2wd auto(sold)

08-26-2008, 05:08 PM	#18 (permalink)
SpecialScottie Registered User Join Date: Jan 2008 Location: Sun Valley, CA Posts: 547	Can anyone confirm whether or not the flange off the v6 3rd member will bolt right up to my stock 85 driveshafts? Has anyone personally done this swap? __________________ 02 KLX300 Dual Sported (Daily Driver) 87 Turbo 4runner STOCK 85 4runner: Automatic marlin5.29 elocker rear end. Rola roof rack. 33" BFG KM2's Build Thread 87 4runner (parts) 95 4runner 2wd auto(sold)

08-26-2008, 07:10 PM	#19 (permalink)
SpecialScottie Registered User Join Date: Jan 2008 Location: Sun Valley, CA Posts: 547	bump __________________ 02 KLX300 Dual Sported (Daily Driver) 87 Turbo 4runner STOCK 85 4runner: Automatic marlin5.29 elocker rear end. Rola roof rack. 33" BFG KM2's Build Thread 87 4runner (parts) 95 4runner 2wd auto(sold)

08-26-2008, 07:37 PM	#21 (permalink)
Diggity Registered User Join Date: Oct 2007 Posts: 20	Ring Gear Clearancing I don't know about the flange fitting, but I do know that you may need to do a little grinding on your diff to stuff that V6 ring gear in there. It's really not much, maybe a quarter inch. When you pull your third you will see a groove in the diff for the ring gear, the V6 ring gear is thicker than on the 4banger, so you'll have to take an angle grinder to it. Don't go nuts, you'll just need to take a little bit off. You'll figure it out, it's not hard, but I just thought I'd pass along a helpful nugget of information.

08-26-2008, 09:27 PM	#22 (permalink)
SpecialScottie Registered User Join Date: Jan 2008 Location: Sun Valley, CA Posts: 547	No ones put factory 4.88s in a 4cyl truck or runner? __________________ 02 KLX300 Dual Sported (Daily Driver) 87 Turbo 4runner STOCK 85 4runner: Automatic marlin5.29 elocker rear end. Rola roof rack. 33" BFG KM2's Build Thread 87 4runner (parts) 95 4runner 2wd auto(sold) Last edited by SpecialScottie; 08-26-2008 at 11:59 PM.

08-27-2008, 09:45 AM	#25 (permalink)
SpecialScottie Registered User Join Date: Jan 2008 Location: Sun Valley, CA Posts: 547	Thanks Wardamneagle. I was also thinking about going the TRD elocker route. DId you wire them up or use the cable opperation? The factory 4.88s only came in 4runners from 90-93 correct? Were they in the 2wd also? __________________ 02 KLX300 Dual Sported (Daily Driver) 87 Turbo 4runner STOCK 85 4runner: Automatic marlin5.29 elocker rear end. Rola roof rack. 33" BFG KM2's Build Thread 87 4runner (parts) 95 4runner 2wd auto(sold)

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