The Forgotten On

As the thread states I cannot easily find new replacements for P#92834744902 for an 81 and 92834744907 for an 89.

I know the one for the 81 has been nla for years and the one for an 89 is iffy on availability online, some places indicate they stock it, others say it is nla.

Does anyone rebuilt them or stock alternatives?

worf928

The easy answer is to call Jeannie at 928 Specialists or Roger and have them check on stock. They can check what's available in the Porsche network and where it is in that network. If you order from anywhere else you'll just have to hold your breath.

jpitman2

I had both my hoses rebuilt by a hydraulic hose shop a few years ago without issues or wallet pain, assuming it would be cheaper than genuine, and I was connected to the trade. Later found that genuines were not that much dearer. Just had to note the external bumper ring, and possible internal restrictor.
jp 83 Euro S AT 57k

polecat702

The lines are easily replaceable. Our suppliers have them , and Greg Brown has better than stock cooler lines. All it takes is money.

The Forgotten On

I can get genuine pressure lines cheap ~$150 or so through Sonnen https://www.sonnenporscheoemparts.co...and-hoses-scat.

The return lines are a pain to get ahold of for the early car, it is definitely NLA. The Later one I managed to find through the dealer for $209. We'll see if they can actually get it on Monday.

So far I know I can have them locally rebuilt or have Greg do it maybe. I'm not sure if he rebuilds the return lines but he probably does considering he does every other line for the car.

It's only money, but I want a product I can put in and not worry about for the next 20 years. It's why I'm replacing all the other lines with Genuine Porsche as well.

ROG100

928 347 449 02 is readily available however the price is not that palatable at $330.
928 347 449 07 has been NLA for a long time - number SS to 928 347 449 11 and is readily available - price is $449.
I normally have both in stock.

If you think they are expensive try buying 927 RHD steering hoses.

C531XHO

Just had my '85 RH drive lines remade by Pirtek in the UK for £240. All new throughout including all the metal parts but I will have to harvest or find alternative P shaped end to connect return line to the reservoir.

GregBBRD

That odd shaped "P" hose from the line tot he reservoir is the problem. It is not only odd shaped, but different sizes on each end.

I stock and replace the return lines, when needed, with the stock Porsche lines. They are not cheap, but they've been doing their job for 25-30 years....and I figure the replacement will last just as long.
Everything I design and make is an improvement on what was originally supplied, on these cars.
Tough to improve on that....

The Forgotten On

I have one of those P shaped lines I bought on ebay a while ago brand new sitting in my bedroom. Best $95 bucks I've spent

But in reality the only part of the P shaped line that needs to be replaced is the small bit of hose that connects it to the reservoir.

I probably should have replaced it while I had the condenser out to do the ac a while ago...

Jason89s4

If you are talking about either of the lines going into the reservoir (from the pump or the cooling loop line to the rack), those are low pressure lines and you can cut off the crimped ends of the metal portions (I used a Dremel), keep the factory metal fittings and replace the rubber portions with appropriate hose and quality clamps. I did this (didn't post about it), but others have as well. Mine works fine. Here was a related thread, see his method toward the end. https://rennlist.com/forums/928-foru...acement-2.html

Using a cordless Dremel, as far as for the "coolng line" (the one that goes all the way across the front of the car and back 92834735000) I was able to cut the metal end off and replace rubber and clamp without removing the metal line from the car, which would have been a real pain. Fairly easy, but as with most procedures on a 928 you will have to remove/move a few things out of the way to get good access. Hint: put the reservoir in last, or you will be moving it back out of the way a few times.

If you prefer, remove the lines and take to a hydraulic line shop, and they can re-use the metal portions/fittings and re-crimped new hose. (There is one in DFW that will do it for about $35/crimp + hose cost. You can even get fancy braided lines if you want to look like a racecar.) They can do these with the pressure lines as well.

Finally, I see various comments about a "restrictor" in the pressure line that goes from the pump to the rack along the LH strut tower. (928347447050) Based on my research, I'm fairly certain there is no "restrictor" in the line, and that the foam donut on the line where it goes against the strut tower is simply there the keep it from rubbing against the tower and valve cover. Others please chime in if I'm not correct.

Jason

worf928

ROG100

"That hose is too effin’ expensive now to cut up." I fully agree. Anyone come up with an alternative - I am all ears?

ROG100

I promised to check availability ------
928 347 449 02 = 5 in Germany a couple here in the States.
928 347 449 11 = 53 in Germany

FredR

I used a straight length of hydraulic hose carefully cut to length t avoid any kinking. The different size either end was a bit of a problem. I think someone at Porsche was taking a snooze when they did that. The trick is to use a hose that is not too heavy so that it can be fitted over the plastic reservoir nozzle. I suspect what Porsche did was to keep the internal diameter constant and the reservoir being plastic needed a beefier nozzle to prevent fracture so they made it with a larger OD. My setup has been bone dry for two years now. Even if it were to fail the low pressure hoses tend to weep rather than fail outright and thus dribble a mess in the general area. The high pressure hose is the critical one as a pinhole on that one results in the spray being atomised due to the high pressure and then it flashes on the hot exhaust and we all know the rest!

I did the same with the suction hose to the pump and that took much more care to get right - on that one I used some of the petrol resistant hose you sent me for my breather project- the one with the woven fabric outer sheath. Had to rotue that very carefully to avoid kinking- again no issues to date but I kept a regular eye on both until was confident it would was working OK.

C531XHO

I looked this last weekend and saw something similar to fit a Holden of some sort but that didn't help me much as they were all in Australia and I am in the UK