Oil Drain pipe material...suggestions? - Boost Forum

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Oil Drain pipe material...suggestions?
Saturday, October 03, 2009 7:10 AM
I just did my turbo setup on my 2003 cavy and used SS line for the drain into the girdle. The thing is tho, is that its such a small space for the drain that the SS hose starts to kink slightly, so im thinking of switching to a different type of hose where I can just slide them on the fitting instead of screwing them on. What type of hose would be best to use since it will be right under the manifold?





"You can only feed them semen for so long before their legs fall off."





Re: Oil Drain pipe material...suggestions?
Saturday, October 03, 2009 9:04 AM
We use a really versatile high-temp silicone hose. It can be easily cut to length, and slipped over 1/2" or 5/8" pipes and hose-clamped. Easy and effective, PM me if you'd like some.


Bill Hahn Jr.
Hahn RaceCraft

World's Quickest and Fastest Street J-Bodies
Turbocharging GM FWD's since 1988
www.turbosystem.com

Re: Oil Drain pipe material...suggestions?
Monday, October 05, 2009 11:10 AM
I used to use a specialty hose as well...extremely heat resistant and further protected by a fiberglass heat jacket. The resulting engine fire turned me back to braided stainless--I've never looked back.

Just food for thought.






Re: Oil Drain pipe material...suggestions?
Monday, October 05, 2009 11:16 AM
Yow! Yes, you bring up a good point...but you were unfortunate enough to experience a true worst-case scenario. Fortunately, oil leaks that erupt into flame don't happen often...at least, in my 30-some years, I've never experienced one, nor to my knowledge have any of my customers.

However, there's a lot to the proper implementation too...good design in our systems means we never get hot parts close enough to this silicone high-temp hose to cause an issue. As the hose can withstand upwards of 300 degrees F, the standard temperatures they should ever be subject to will not cause failure.



Bill Hahn Jr.
Hahn RaceCraft

World's Quickest and Fastest Street J-Bodies
Turbocharging GM FWD's since 1988
www.turbosystem.com

Re: Oil Drain pipe material...suggestions?
Monday, October 05, 2009 4:13 PM
I have stainless too but for now im gonna do the high temp hose. I tapped the girdle, but it's just too tight a fit. The hose starts to kink and it doesnt have proper gravitational flow. Gonna tap the pan later on and just plug the girdle.

Later on, ill try to make the girdle work tho.





"You can only feed them semen for so long before their legs fall off."




Re: Oil Drain pipe material...suggestions?
Tuesday, October 06, 2009 6:38 AM
Bill Hahn Jr. wrote:Yow! Yes, you bring up a good point...but you were unfortunate enough to experience a true worst-case scenario. Fortunately, oil leaks that erupt into flame don't happen often...at least, in my 30-some years, I've never experienced one, nor to my knowledge have any of my customers.

However, there's a lot to the proper implementation too...good design in our systems means we never get hot parts close enough to this silicone high-temp hose to cause an issue. As the hose can withstand upwards of 300 degrees F, the standard temperatures they should ever be subject to will not cause failure.


You're absolutely right--this was a definitley a worst-case-scenario. The hose was snaking it's way between (2) primaries and there wasn't much room on either side. It was an extremely good hose and fire jacket, but ultimately the turbo won. The only reason I used it was because braided stainless was just too tight a fit and I was experimenting with something else.


Senorguitar19 wrote:I have stainless too but for now im gonna do the high temp hose. I tapped the girdle, but it's just too tight a fit. The hose starts to kink and it doesnt have proper gravitational flow. Gonna tap the pan later on and just plug the girdle.

Later on, ill try to make the girdle work tho.


Do you happen to have a picture of your oil drain setup? Different fittings might solve your problem.






Re: Oil Drain pipe material...suggestions?
Tuesday, October 06, 2009 6:48 AM
Ill take a pic the next time the car is jacked up. But yeah, i thought of that posiblity. A 90 degree hose end might do it, but the drain on my setup is soooo close to the girdle tap. Would still be pretty tight.

I might try a 45 coming out of the turbo and a 45 coming off the girdle. But for now I ordered the High Temp hose and a slip on 45 to attach to the girdle. Mainly as a temp fix till I can get it back to SS line.





"You can only feed them semen for so long before their legs fall off."




Re: Oil Drain pipe material...suggestions?
Tuesday, October 06, 2009 7:16 AM
I would keep the girdle as the source, dont think youd have a problem with some high temp hose as its probably a very short line soo less possibilities of it rubbing something.

It kinda sounds like your ss line is kinking cause the line is too long. Could this be it or is it just the way the fittings are angled?



Re: Oil Drain pipe material...suggestions?
Tuesday, October 06, 2009 8:58 AM
Its by the way the fittings are angled. I didnt really think the drain plumbing thru when i was buying parts. Should've bought 2 45's instead of 2 straight hose endings. It'll all be fixed soon enough tho.





"You can only feed them semen for so long before their legs fall off."




Re: Oil Drain pipe material...suggestions?
Tuesday, October 06, 2009 10:30 AM
Agent Omega wrote:
You're absolutely right--this was a definitley a worst-case-scenario. The hose was snaking it's way between (2) primaries and there wasn't much room on either side. It was an extremely good hose and fire jacket, but ultimately the turbo won. The only reason I used it was because braided stainless was just too tight a fit and I was experimenting with something else.

Ah yes, poor fella never had a chance then...he was surrounded! Even with insulation protection, the hose itself needs to be able to rid itself of heat, else the heat will ultimately penetrate the insulation and get to the hose. With it surrounded by hot tubes, it could not cool itself, and the best the insulation could do is postpone the inevitable.

An interesting side note here...

Standard braided hose, while a very good product, still only has a temp rating of 300 degrees F. The silicone hose we use is rated at 257 degrees F. While this 43-degree difference is not insignificant, it's also not huge...and 300 deg. F is easy to exceed when we're talking pipes and turbos that can get red hot mere millimeters away. Braided hose does have one advantage, in that an effective heat path exists via the braided covering to the metal fittings...this does help dissipate heat away from the hose's inner rubber core. Nonetheless, there's also an attendant drawback...unlike a standard hose that can be visibly inspected for heat damage, braided products will show no signs of distress until failure.

For applications like yours, with high heat in close proximity, I suggest you use the Teflon braided hose instead. It's good to 450 deg. F.



Bill Hahn Jr.
Hahn RaceCraft

World's Quickest and Fastest Street J-Bodies
Turbocharging GM FWD's since 1988
www.turbosystem.com

Re: Oil Drain pipe material...suggestions?
Tuesday, October 06, 2009 7:08 PM
teflon braided, eh? Any links?





"You can only feed them semen for so long before their legs fall off."





Re: Oil Drain pipe material...suggestions?
Tuesday, October 06, 2009 7:10 PM
Earl's, Aeroquip, Russell...they all carry them


Bill Hahn Jr.
Hahn RaceCraft

World's Quickest and Fastest Street J-Bodies
Turbocharging GM FWD's since 1988
www.turbosystem.com

Re: Oil Drain pipe material...suggestions?
Wednesday, October 07, 2009 5:27 AM
Teflon braided is the sh1t! It's basically all we use, save for special situations where we need the rubber. Like when we want a fitting on one side but can only use a hose clamp on the other.

I think I've been dubbed the un-official braided line maker. I've gotten it down to a science at this point






Re: Oil Drain pipe material...suggestions?
Wednesday, October 07, 2009 6:43 AM
Senorguitar19 wrote:Its by the way the fittings are angled. I didnt really think the drain plumbing thru when i was buying parts. Should've bought 2 45's instead of 2 straight hose endings. It'll all be fixed soon enough tho.


We used 2 straight hose ends with no problems. I would also keep the girdle as your drain.



FU Tuning



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