tony66

hi folks new 928s4 owner here-my external oil cooler on my car is weeping
for the time being while i source repair/replacement or possibly aftermarket conversion i could do with capping off the oil cooler outlets so as to use the car
i understand i may need to alter the oil cooler stat-presumably remove the small spring-if really necessary?
i live in scotland so temps here and fairly gentle use would dictate an oil cooler is probably not required
does anybody have the spec/size for the blanking caps i need
the thread sizes for the block would be handy too so that i can source some normal an10/12 fittings for aftermarket

V2Rocket

Not 100% on how the 928 is plumbed for oil cooling but you will probably need to make a "loop" to connect the two fittings on the engine so that oil still flows properly.

If you change to a different cooler, you can save a lot of money by getting hoses made at a local hose repair shop (that services hydraulic equipment) versus getting new Porsche lines.

tony66

hi-thanks for reply-i am now either going to keep and replace the cooler or get it recored
due to the increasing values [soaring atm] of the 928 in the uk it would probably be best to keep it as standard as possible..having just done the t/belt and all front end seals,w.pump etc i was hoping to be relatively oil tight,but there always seems to be something lol

mark kibort

you dont want to make a loop... jim baily knows how do to this and helped me do mine I think i took the 5 liter block and made it cooler-less. Jim helped me there. there are a bunch of things you need to close off the system and not use the cooler. i have the list of the things i removed or addedd but cant remember... ill have to get my notes.

ping Jim on how do to this. ill search for my notes from him with the drawings of the parts needed to be added or removed.

Adamant1971

Sorry but this just sounds like a bad idea. There is no replacement for fixing this right, order the parts and do the job once. Just my 2 cents.

Not sure what year your car is, but the oil lines are not overly expensive from Porsche or you can have them rebuilt for about $100. A new aluminum CSF rad from 928 International will fit the bill and they have them in stock.

Also, be carefull to counter hold the oil line bosses on your block, the block can be easily damaged if the bosses break loose.

Best of luck.

jej3

To echo others, switching to a new aluminum CSF Radiator (as I mentioned to you on Facebook) might be the only way to go at the moment.

Getting your own rebuilt is likely to leak and the two manufacturer NRF and Langerer & Reich (now Kuehler-Rath http://kuehler-rath.de/) have both confirmed to me this week that there is NO availability of NEW Oil Coolers for the 1990+ S4/GT/GTS until at least mid-December.

Glad to hear you're thinking about preserving the design and genuinely share the sentiment with others here who believe blocking the oil cooling is probably not a good idea regardless of climate.

Keep us posted!

tony66

i have a local fabricator having a look this evening,if he can do it cost effectively that is fine-i have a feeling though that the 600mm or so core length may be an issue for him
i have sourced pattern item[NRF] for 250 uk pounds delivered-pity euro car parts are out of stock as it would be appx 185 pounds with their discount code
my radiator is new[ish] from previous owner-it has two side tanks with outlets but these are blanked/unused,car has separate trans cooler porsche type[he had to get box rebuilt due to coolant/trans fluid mix and didnt want a repeat performance] a separate cooler is in my mind a better idea for fault finding etc easy repair..i know it would be simple enough to get two earlier design lines and run to the side tank on the rad but i would rather replace existing cooler

jej3

I don't know if you can PM, Tony66 but I'd love to know the source at 250 UK pounds because I cannot find anything via ebay(.com, .co.uk, .de) and my amazon.co.uk order was cancelled due to out of stock.

Thanks!

FredR

Tony,

To get the oil to flow to the cooler there has to be a differential pressure created to encourage the oil to flow through the cooler. When the oil is cold it flows directly to the engine, when it is hot the oil port direct to the engine is logically restricted to redirect the flow to the cooler as that port opens. If you block the ports to the cooler the question then reduces to one of whether the oil flow in the now restricted port is sufficient. Unless one knows the answer to this conundrum you would be taking a huge risk I suspect.

If I was in a position where I had to run without an oil cooler connected I would loop the cooler ports with a single line to ensure I had appropriate flow but I would feel most uneasy about it. It may be cold in Scotland nw but I suspect the inside of the engine does not know where it is other than perhaps some cooling from air outside the sump that probably does not amount to much in the scheme of things.

Regarding the oil cooler ports on the block the fitting can be removed but using a gorilla to get it off is not the way to go as it can cause damage- I bleive it has to be heated to break the locking/sealing gune Porsche stuck in there originally. 928 Motorsports does AN adapters if you want to go down this route and Greg Brown also does some trick stuff with oil cooler lines.

For the oil cooler try contacting Paul Anderson in Stroud to see if he has any s/h units in his inventory of recovered parts that he sells.

Rgds

Fred

tony66

mine is going for recore,new tube etc cost 150 uk pounds

for those who want new..
http://www.ebay.co.uk/itm/391555976317?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

Carl Fausett

FYI: I have an after-market replacement oil cooler kit in development now.

It will fit within the space envelope of the current unit, and is a dual-pass unit (better cooling) rather than the single-pass unit we have now. All parts brand new.

I will be selling it as a complete kit with braided stainless hoses to and from it and the adapters needed to connect in and out of the engine.

I have seen drawings already from my manufacturer, and am waiting on the first prototype to arrive.

jej3

Hey Carl - what is the timing and a rough price range on this kit?

Carl Fausett

I am working with Setrab Oil Coolers (OEM Equipment Supplier) to make sure we get a great, high-quality unit. The only issue is - they are very busy and my order is small in number, so we tend to get the tail of the dog time-wise.

I was lucky to even be able to get them to involve themselves on such a small order. Anyway, we have shared initial drawings, measurements and photos back and forth, have already confirmed specs, flow and pressures.

But I do not have a schedule from them. All I can say is I'm working on it. Keep in mind if the first prototype is wrong or needs to be altered, it will have to go back for revision. This is how this stuff goes.

jej3

So Carl best case it could be 6 months and worst case a few years????

Ducman82

Blanks. Add 2 crush washers and done.