What are the weak points in the ZF 5 speed. - Diesel Forum - TheDieselStop.com
Power Strokes 1994-1997 Upgrades and Aftermarket Upgrading or adding OEM or aftermarket equipment to your 1994-1997 Ford F-Series with Power Stroke engine.

 
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post #1 of 14 (permalink) Old 02-23-2007, 09:36 PM Thread Starter
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What are the weak points in the ZF 5 speed.

When I have my engine out I will be going through the tranny as well because it has the low rpm growl. I am wondering if there is anything I can do to beef it up to make it last behind a set of stage ones and a D66.
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post #2 of 14 (permalink) Old 02-24-2007, 08:43 AM
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Re: What are the weak points in the ZF 5 speed.

I dont think you'll have a whole lot of problems. Just make sure you update to a single flywheel clutch that will hold more power. If you really wanna go over board you could put in a bigger input shaft, but for what your planning you really dont need it.

Matt
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post #3 of 14 (permalink) Old 02-24-2007, 10:42 AM
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Re: What are the weak points in the ZF 5 speed.

Your low rpm growl is normal. It is called gear rollover.

1996 F-250 extended cab long box five speed. Home made Tymar, 203 Stat, 60 gal in bed fuel cell, 315/75's, no muffler, ebpv welded open 3" to 3" DP, Babies. 290K, still chugging, and still smoking when cold.

UPDATED 1/1/09 Replace so far. 1 LUK flywheel+clutch, 2 thermostats, 2 set of brakes, 1 set of calipers, 5 CPS, 3 sets of tires, 2 Transfer pumps, 1 Injector modual, 1 Computer, 2 Alt, 2 sets of batteries, 1 Water pump, 6 Belts, 1 PS hose, 2 Sets ball joints, 2 set u-joints, 2 carrier bearing, 2 Speed sensors, 1 oil pres sender, 1 temp sender, 4 sets of e-break cables, 1 front fuel tank, 2 rear fuel tanks, 2 set of glow plugs, 7 Glow plug relays, Oil galley o-rings, Turbo pedistal o-rings, EBPV o-rings, 3 sets of Injector O-rings, 1 Vac-pump, 1 new carpet, 1 total paint job.Total $$$ in repairs v/s miles driven = 4.6 cents per mile. Add fuel to that it jumps to 16.5 cents per mile over the life of the truck.
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post #4 of 14 (permalink) Old 02-24-2007, 02:41 PM
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Re: What are the weak points in the ZF 5 speed.

replace the dmf with a smf and a good clutch kit, fill it with some mobil and it should last awhile [img]/ubbthreads/images/graemlins/grin.gif[/img]

2000 F-250, reg. cab, 4x4, XLT, 7.3, built 6/00-forged rods!, DP Tuner F5, AFE stg. 2, MBRP 4", Autometer Ultralight boost/pyro/trans temp gauges, 285 BFG's
2011 F-150, 2wd, XLT, Ecoboost


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post #5 of 14 (permalink) Old 02-24-2007, 05:48 PM
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Re: What are the weak points in the ZF 5 speed.

You should be fine with a stock tranny. I think the weak point is the input shaft (which is larger on the 6-speed). There was talk of someone waaay back looking into making a custom, larger, input shaft for the 5-speed, but I'm not sure it ever materialized. Cheers!

97 F250 SC 4x4 (CA model), E4OD, 4.10 LS,
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, Ext Trans Filter, Tru-Cool Max, I/C Mounted but not Plumbed

SOLD: 94 F350 CC DRW, 5 Speed, SBC Con-O,
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post #6 of 14 (permalink) Old 02-24-2007, 06:01 PM
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Re: What are the weak points in the ZF 5 speed.

[ QUOTE ]
You should be fine with a stock tranny. I think the weak point is the input shaft (which is larger on the 6-speed). There was talk of someone waaay back looking into making a custom, larger, input shaft for the 5-speed, but I'm not sure it ever materialized. Cheers!

[/ QUOTE ]

IIRC southbend has an upgraded input that is the same size as the 6 speed.

Tim

'97 F350 crew cab 4x4 lwb xlt 5 speed 225hp

'95 F250 reg cab 2wd xl auto 215hp
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post #7 of 14 (permalink) Old 02-24-2007, 06:46 PM
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Re: What are the weak points in the ZF 5 speed.

I did not see it on there site.

95 F350 cc, 4x4, 5sp with a short shift kit, 3.55LS, D66 turbo, Beans stage 1's inj, modded ped, 15/17* HPOP [Thanks Joey] DIY fuel system, IDM mod ,hx mod, DPR intercooler, 3" intakes 3" dp, 4" side out, 2piller w/boost&pyro, steering column mount w/hpop gauge, TW chip, AFE stage 1, ccv mod, DIY oil & coolant filter setups, John Deere coolant eye, ORU RSK, Black Centerline wildcats w/Hankook RT03 315-75-16 mt, front bumper w/8" Hellas and a CT performance rear bumper/tire carrier, 05 SD front and rear seats.


Trying to find time to install Con O clutch, Ford rear diff cover, Blackbird rear disc brake setup.
I have two Kids and they come first...


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post #8 of 14 (permalink) Old 02-24-2007, 11:59 PM
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Re: What are the weak points in the ZF 5 speed.

I need a new input shaft and some other parts, anyone know if this upgraded shaft is for real ?

95 PSD crew cab LWB 5 speed KP D60. Converted to 4wd from 2wd (wow, what a job!). Custom RSK with SD springs. 290k miles and running strong. SMFW conversion, 3" DP, 1.0 A/R exhaust housing on rebuilt turbo.
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post #9 of 14 (permalink) Old 02-25-2007, 03:00 AM Thread Starter
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Re: What are the weak points in the ZF 5 speed.

I know the growl may be normal but I dont like it. It makes the truck sound like a real Junker, especially when the tranny is hot. Sounds like the world is coming to an end from under my truck. I already have a Luk flywheel and clutch kit so I should be all set.
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post #10 of 14 (permalink) Old 02-25-2007, 12:32 PM
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Re: What are the weak points in the ZF 5 speed.

Give this guy a call, he's got a heavy input shaft and all kinds of clutchs from stock to dd's and the prices are really good [img]/ubbthreads/images/graemlins/wink.gif[/img]. His names Kenny by the way.
http://www.kennysmachine.com/index.cfm
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post #11 of 14 (permalink) Old 02-26-2007, 05:36 PM
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Re: What are the weak points in the ZF 5 speed.

[ QUOTE ]
Give this guy a call, he's got a heavy input shaft and all kinds of clutchs from stock to dd's and the prices are really good [img]/ubbthreads/images/graemlins/wink.gif[/img]. His names Kenny by the way.
http://www.kennysmachine.com/index.cfm
Matt

[/ QUOTE ]

sent an e-mail, will post what he says.

95 PSD crew cab LWB 5 speed KP D60. Converted to 4wd from 2wd (wow, what a job!). Custom RSK with SD springs. 290k miles and running strong. SMFW conversion, 3" DP, 1.0 A/R exhaust housing on rebuilt turbo.
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post #12 of 14 (permalink) Old 02-27-2007, 02:18 PM
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Re: What are the weak points in the ZF 5 speed.

[ QUOTE ]
Give this guy a call, he's got a heavy input shaft and all kinds of clutchs from stock to dd's and the prices are really good [img]/ubbthreads/images/graemlins/wink.gif[/img]. His names Kenny by the way.
http://www.kennysmachine.com/index.cfm
Matt

[/ QUOTE ]
[img]/ubbthreads/images/graemlins/shocked.gif[/img] [img]/ubbthreads/images/graemlins/phoney.gif[/img] [img]/ubbthreads/images/graemlins/vomit.gif[/img] You could wear out 2 south bends in the time it takes him to get back with you

-Michael
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post #13 of 14 (permalink) Old 02-27-2007, 06:31 PM
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Re: What are the weak points in the ZF 5 speed.

well, so far no reply ... guess I will call.

95 PSD crew cab LWB 5 speed KP D60. Converted to 4wd from 2wd (wow, what a job!). Custom RSK with SD springs. 290k miles and running strong. SMFW conversion, 3" DP, 1.0 A/R exhaust housing on rebuilt turbo.
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post #14 of 14 (permalink) Old 02-28-2007, 04:11 PM
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Re: What are the weak points in the ZF 5 speed.

He is in the process of moving into a new shop so that won't make getting ahold of him any easier

-Michael
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