kary4th

I need to replace all the hoses on my 78.

Does anyone know what sizes I will need to replace everything?

It looks like a PO has used everything from around 4mm to 10mm. Some are obviously too large for where they're used & one (the 9 or 10mm one) looks like it's way too small for the connector it's been jammed onto. From the scorching on it, he obviously used a torch to soften it as he put it on.

Anyway, after searching for a little while, I failed to find a list of sizes and approximate lengths need to replace everything. PET and the WSM also don't seem tell sizes and amounts.

Have I missed domething somewhere, or do any of you guys happen to know?

Thanks,

Garth S

There is a link with all that data; however, due to brain fade, I can't find it! will meditate ... later ...

kary4th

If you've actually seen such a page, I'll keep looking, too...

Garth S

Try http://www.nichols.nu/tip305.htm

kary4th

Thanks, Garth. I hadn't seen anything on Greg's site about hoses... & I was there a couple hours ago for center console removal info.

I appreciate the assist!

Rez

Still working on this. I've been lazy.

https://rennlist.com/forums/showthre...ghlight=vacuum

Sean79 5spd

Check out Hose TEchniques for good silicon hoses. Great colors too.

Sean

kary4th

NICE

kary4th

Will do. I've been having a rough time finding appropriate sizes online (two that sell them "anticipate" shipping them in 6-8 weeks).

Thanks.

Fogey1

From WayBack in 2002, here's what I got from Dave Roberts. Thanx again, Dave.

Subject: Re: [928] Re: "The Kit" 80-84US

Dave, How about my car? It's a US 5spd (83S). And a keeper (I've never sold a Porsche and not been sorry later). Feel free to post the answer to the list as well.
Thanks again, what a great resource you are!, Will

Hi Will,

You are welcome, and here is your list.

Prod ID Product Description Price each

928.110.330.03 Intake 78-84 Gasket (8 req) $2.00

928.107.311.01 Intake 78-84 Hose - Oil filler bottom>Oil Pan $9.14

928.107.315.00 Intake 78-84 Hose - Oil Filler side>Air Guide $6.99

928.110.178.00 Intake 78-84 Hose - VacLimiter>ThrottleBody-Large $12.80

928.110.175.00 Intake 78-84 Hose - VacLimiter>ThrottleBody-Small $4.85

928.110.158.01 Intake 78-84 Rubber Seal(8 req) $3.00

928.110.248.01 Intake 78-84 Sleeve - Throttle Body>Center Intake $15.92

999.701.436.40 Intake 78-86 O-Ring - Air Guide>Throttle Body $8.68

N.020.139.1 Intake 78-95 Hose - Rigid Vacuum Line (per Meter, 2-3
req) $2.48

928.110.442.00 Intake 80-84 Hose - AuxAirReg>Air guide $11.48

999.239.009.40 Intake 80-84 Hose - AuxAirReg>Start Valve(250mm) $12.20

N.020.359.1. Intake 80-84 Hose - ElecAirValve>Plastic"Y"(150mm)
$5.50

N.020.359.1.. Intake 80-84 Hose - Intake>ElectricAirValve(290mm)
$9.50

999.239.011.40. Intake 80-84 Hose - Plastic"Y">Air Guide(220mm) $7.25

999.701.599.40 Intake 80-84 O-Ring - Air Flow Meter>Air Guide $6.70

928.574.717.02 Vacuum - Rubber Elbow (8 req) $2.63

928.573.727.02 Vacuum - 3-Way Rubber Splitter (4 req) $5.32


**** For 80-83, Note: 83 up to Motor #s 81D 0954 5-Speed and 81D 6179 Auto

928.107.722.00 Intake 80-83 Hose - OilFillerLid>AirGuide(ck83M#)
$29.05


**** For 83-84 , Note: 83 from Motor #s 81D 0955 5-Speed and 81D 6180 Auto

928.107.351.00 Intake 83-84 Hose - "T" Fitting@OilFill-Ck83M# $13.00

999.236.002.50. Intake 83-84 Hose - "T">Down-Ck83M#(150mm) $4.50

928.107.724.00 Intake 83-84 Hose - OilFillerLid>"T"(ck83M#) $9.23


Other suggested items:

928.110.903.00 Fuel - Injector - Hose Repair Kit - L-Jet (includes parts for
2 Injectors) (4 req) - $9.15

311.133.263 Fuel - Injector - Lower Seal - Large - L-Jectronic (8 req)
$1.20

311.133.261.A Fuel - Injector - Lower Seal - Small - L-Jectronic (8 req)
$0.73

928.107.707.04 Gasket - Oil Filler Housing - 78-84 $4.40

928.106.197.03 Gasket - Coolant - Crossover (2 req) $3.30

999.701.627.40 O-Ring - Coolant Crossover - All $4.76

Hope that helps,

David Roberts
928 SPECIALISTS
Phone: (828) 766-9280
Fax: (828) 766-5098
Website: http://www.928GT.com or www.928.cc

928Collector

(from the link above)
Braided Hose Replacement

For those thinking of replacing the cloth braided hoses in the engine bay on 16 valve cars you will need to buy the following hoses.

11 ft of 3.2mm for vaccuum advance and fuel vapour diaphragm (4 lines)
6ft of 7mm for fuel pressure dampers
4ft of 9mm for fuel vapour from inlet manifold (top)
3ft of 13mm for fuel vapour air cleaner box
2ft of 17mm for fuel vapour inlet manifold (bottom)

Lengths are approximated to leave some left over just in case.
Diameters are all inner measurements as best I can tell.
Based on MY 1982. You'll also need some cable ties to keep the hoses out of harm's way.

Be careful when removing the 3.2mm hoses that connect to the thermal valve on the passenger-side cam box as it has plastic connectors that get brittle with the heat.
Best to get a sharp blade and slice the hoses to remove.

Hope this helps somebody.
John McDermott