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-   -   How heat resistant is this oil line? (http://forums.pelicanparts.com/porsche-911-technical-forum/120518-how-heat-resistant-oil-line.html)

TerryBPP 07-25-2003 07:18 AM

How heat resistant is this oil line?
 
I'm in the process of redoing my exhaust (of couse I'll post pics when its done) and one of the muffler is touch an oil tube. The tube is the one on the passenger side, back of the car, and it runs right under the cam tensioner. Probably the most visible line under the car. Its about 1/4" thick. 3/4's of it is metal tubing and 1/4 of it is flex hose. My questions is will this hose get burnt? Will my oil temp increase greatly? Has anyone modified the hose for clearence?

Chuck Moreland 07-25-2003 09:27 AM

Hose or pipe? Normally that is a metal pipe. You didn't say what year your car is.

A picture would be helpful too.

Do not let a hose touch your muffler.

Pipe can be bent. A minor bend can be made easily without kinking, get yourself a conduit bender. More extensive bends and tight bends are much, much harder to do. In that case, consider converting to the '74 style oil pipes that route in front of the motor, or change your muffler design.

TerryBPP 07-25-2003 10:22 AM

Sorry Chuck, most people here are fimilar with my car. Its a 1976 911s 2.7. The "hose" is actually a 1/4" metal tube that carries oil. Where is a good place to get a pipe bender?

304065 07-25-2003 10:48 AM

As an alternative to bending that thin tube, insulate it with some fiberglass firebraid from Aircraft Spruce.

TerryBPP 07-25-2003 11:00 AM

This is the line. This is Striet's car but the same scenario. If your out there Chris, did you bend this line?

http://forums.pelicanparts.com/uploa...1059156027.jpg

lendaddy 07-25-2003 11:07 AM

That is the crossover line and is more like 1/2" if not bigger. They all have a flexible pigtail and are close to the exchangers on my car. Oh yea my new one weeps! Pretty cool I think. I look forward to educated responses on this as mine gets very hot I would imagine.

PS yours looks custom bent already, I dont believe thet ever came like that(usually straight).

TerryBPP 07-25-2003 12:23 PM

Anyone? Chris Striet?

Chuck Moreland 07-25-2003 12:28 PM

That tube is about 3/4". A conduit bender can be had at any hardware store for about $10.

search the archives for "SSI clinic". There was an SSI install by Tyson / JW and company that documented a similar mod made to accomodate the SSIs.

What exchangers are you using?

TerryBPP 07-25-2003 12:46 PM

None. Aftermarket header, straight to muffler, right out the back. Just like Chris's but I used muffler instead of supertrapps. Thanks Chuck.

TerryBPP 07-25-2003 01:03 PM

I was reading the SSI clinic section and its seems like Tyson bent the line while it was on the car. Is this possible?

911pcars 07-25-2003 02:14 PM

Bend the line as Tyson suggests, then insulate it from the exhaust heat.

Alternately, replace it with the looped pipe that was fitted to early 911s. This wraps under the flywheel end of the engine instead of taking the long way around the engine. Insulate this one as well.

Sherwood Lee
http://members.rennlist.org/911pcars

island911 07-25-2003 03:10 PM

Quote:

Originally posted by TerryBPP
I was reading the SSI clinic section and its seems like Tyson bent the line while it was on the car. Is this possible?
Since Tyson is likely on the road right now, and was the other guy in there bending away at the SSI clinic, I'll take that question.

Yes, it is possible.

Though, the car we did this on already had the early style exhast. . . meaning we didn't have to bend it far. (It was still a b!tch, BTW)

When I got my ssi's I built tooling to bend the line, built a bracket to support its new possition. . .and a week later the flexible section sprung a leak. :mad:

John Walker bailed me out with quick delivery of the back dated oil-lines, and *that* was a breeze.

So what I'm saying is, while it *can* be done, it is a huge waste of time. HUGE!

Buy the back dated lines. If you don't, you will spend a whole lot of time and effort bending those, only to end up with a very marginal result. Oh, and the lower right valve cover will likely be trapped by the "new possition" of the old line.

Early_S_Man 07-25-2003 03:22 PM

<b>A 2.7's oil supply doesn't need ANY additional heat gain from the exhaust system!!!</b>

... which is why the <b>Preferred Solution to your problem</b> is to fit the '74 style 2-piece scavenge line that is routed in front of the engine and below the transaxle bellhousing!!!

Bill Verburg 07-25-2003 03:49 PM

Listen to Warren. get the backdated line, it has the secondary benefit of aiding oil cooling. For those w/ 993 t/ps I would use the B&B optional line that goes over the top of the trans. It will make changing one of the oil filters a lot easier.

This pic shows the backdated line
http://forums.pelicanparts.com/uploa..._008_small.jpg


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