Hello everybody, Just replaced the oil pressure sender on my '87. What looks like it should have been a ridiculously easy remove and replace operation was surprisingly difficult, owing to the inaccessibility of the 24mm fitting under the oil filter housing. Anyway, in the process of clearing away hoses (and replacing the aluminum 3-way pipe that a Ferrari dealership had mangled with vice-grips (!), I found that the cloth hoses are in bad shape, rather brittle (see photo). In muscling the aluminum tube into place, the top of the rear hose crumbled a bit. So my question is: do you think I can drive the car with a slight leak in that hose (I don't think the pressure is that high). Second, and more importantly, do you think that the condition of these hoses points to a need to replace other, more consequential hoses. I'm thinking of fuel hoses in particular. Thanks! Image Unavailable, Please Login
Fuel hoses should be replaced with modern ones that can handle alcohol in the fuel system which is becoming hard to avoid. The coolant hose under the air intake plennum are often original as they are hard to replace without removing the plennum, although it can be done. Your oil breather and air injection hoses are probably original, the hose size is tough to find and expensive. The hoses are probably very hard from years of heat cycling. At the least, tighten the hose clamps once the engine is warm and the hoses are a bit softer. Newco Products has modern hoses that look similar with the cloth braid, they are the imperial equal of the correct mm sizes, and Italian Car Parts sources what look like OEM original type hose in the hard to find large mm sizes. The original SAIG logo branded hoses are long out of production,
Thanks for this info -- very, very helpful. I'm starting to think that I might have to do an engine out to replace all the hoses when I do my next major (even though a major selling point of the Mondials is that the cam belts can be changed from the wheelwell). In the meantime, I wonder how important it is to replace that oil breather hose. I suppose they can spray oil droplets if they're not clamped up securely.
Thanks for this! -- But do you have the brand/source? I think that info got lopped off the text you pasted.
this is the oil breather hose from Newco - it is expensive, not exactly the right size and not a perfect match on the outer braiding to the original hose: Image Unavailable, Please Login
Have you fit this hose on your car? I'm wondering how much it stretches to accommodate the aluminum tubes which I think are closer to 20mm.
You're not kidding -- that stuff is crazy expensive when you have a 5 meter minimum length ($370). And it's the same size (19mm) as the stuff on Amazon that Yelcab referenced. Who wouda thunk that replacing 4" of hose wouldn't be straightforward?
https://www.newcoproducts.com/index.php?route=product/product&path=34_44_303&product_id=4053 The Newco hose is branded Continental, and has a slightly thinner wall than the OEM hose. Although the size is referred to as metric, it is indeed 3/4 inch hose. My oil breather also has a larger hose on part of the system, Newco supplied the 7/8 inch hose which was the metric equivalent. One would have to orient the branding on the hose in a way not visible from the engine bay in order to look close to stock OEM. The prices are slightly lower than those from Italian Car Parts, which may or may not have branding printed on the hoses. Neither would equate to the SAIG printing on the OEM hoses, I presume a councours restorer would make a stencil and spray on the white hose marking s to mimick OEM. Functionaly, any oil rated hose with a decent wall thickness will do the job, and smooth hose would be easier to keep clean than the cloth braided hose. My original hoses were in pretty good shape inside, but had hardened considerably over the years of engine bay heat and may not have been capable of a proper seal under the hose clamp pressure, although tightening up the clamp when warm should help. Probably not essential to replace these hoses unless they are actually crumbling.
Newco is the most expensive supplier known to man. And looks nowhere near correct. T Rutlands and GT Car parts both sell the correct stuff and its not that expensive.
Lower price than Italian Car Parts. Would be useful to know who the maker of the "correct" stuff actually is.
When I was able to get it from GT, before Covid, it was about $10 per meter. I bought 10 meters and went through it pretty quick. It was used all over the air injection system and the CIS system. After Covid, the manufacturers stopped making it, and I thought the buyers were required to buy in very large quantities and nobody did. I was able to buy 7/8 inch US branded cloth covered hoses but it does not look anything like the original. And the cross-over pipes for the 308/328 series are 20mm (close to 3/4) and not 22mm (7/8) so cannot use those.
I do also note that the Newco hose does in fact look quite similar to the OEM. Here is a pic of the Newco hose against the OEM SAIG hose; the specifics of the manufacturer data on the Newco hose; and, how they look installed, the air bypass hoses are the most visible in the engine bay.
