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LM heater hose length
Posted by: bmarsh52 ()
Date: December 12, 2014 02:48PM

What are the installed lengths of the two 4" heater hoses on a LM. It appears that the passenger size is shorter.

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Re: LM heater hose length
Posted by: jimc ()
Date: December 12, 2014 04:16PM

36" per side worked for me and then I pulled the slack out before cutting.

Don't forget, there are some other duct hoses that have a plastic helix (internal support) rather than the metal.

If you need a couple of good original hose hangers (LM) let me know.

Jimc
1965 Corsa

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Re: LM heater hose length
Posted by: gerg ()
Date: December 12, 2014 07:11PM

I used new hoses from Clarks on my '67 Monza. I probably trimmed 3 to 5 inches off of each side once I work them into place. I'm not certain how long they are from Clark's, probably says so in their catalog though.

gerg
Monroe, LA


Current cars and other fun stuff -> [gregblakeney.smugmug.com]

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Re: LM heater hose length
Posted by: rowin4 ()
Date: December 12, 2014 09:54PM

Anybody use the metal drier vent from LOwe's ?

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Re: LM heater hose length
Posted by: RobertC ()
Date: December 12, 2014 11:55PM

rowin4 Wrote:
-------------------------------------------------------
> Anybody use the metal drier vent from LOwe's ?


Do you mean the 4" all aluminum expandable dryer hose?

Been using it for maybe 20 years...

Get it from a regular hardware store...

One length (4 feet memory???) can do both sides if you cut it in the right place - but, I cannot remember the measurement...

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Re: LM heater hose length
Posted by: Murphy ()
Date: December 13, 2014 04:42AM

Didn't know solid aluminum flexible duct has been around for 20 years.

65 Monza Coupe
61 500 Coupe-W100181
Earliest '61 Alive?

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Re: LM heater hose length
Posted by: RobertC ()
Date: December 13, 2014 07:51AM

Murphy Wrote:
-------------------------------------------------------
> Didn't know solid aluminum flexible duct has been
> around for 20 years.

Well, the "maybe 20 years" is based on my feeble memory.

My Corvair mechanic at the time (late 70's thru early 90's) started using it.

I just went thru my maintenance records and found that aluminum hose was put on my 1965 Corsa in August 1985...

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Re: LM heater hose length
Posted by: Wagon Master ()
Date: December 13, 2014 08:10AM

4" corrugated solid plastic drainage tile for me.
No clamps
No rot
No leaks

Been aircooled since 1973
Northwest Ohio 45840

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Re: LM heater hose length
Posted by: Murphy ()
Date: December 13, 2014 08:43AM

Murphy Wrote:
-------------------------------------------------------
> Didn't know solid aluminum flexible duct has been
> around for 20 years.


Wouldn't be my first choice, just sayin'.

65 Monza Coupe
61 500 Coupe-W100181
Earliest '61 Alive?

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Re: LM heater hose length
Posted by: Frank DuVal ()
Date: December 13, 2014 09:20AM

Aluminum dryer hose a VERY BAD choice for earlies. I've seen too many of them (earlies) start smoldering from just the steel wire in the fabric hose shorting against the starter terminal All aluminum is just asking for trouble.

Besides it just look cheap!smileys with beer

Hmmm, solid corrugated drain tile, well at least it is NO fire hazard from shorting the starter bolt. I might have to try this. I have some around here from garage construction.

Frank DuVal

Fredericksburg, VA

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Re: LM heater hose length
Posted by: RobertC ()
Date: December 13, 2014 09:25AM

FWIW

My Corvair mechanic put a strip of duct tape over the terminals of the starter solenoid.

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Re: LM heater hose length
Posted by: flamingchariots ()
Date: December 13, 2014 07:29PM

Duct tape has never been approved for elecrical purposes as far as I know. [en.wikipedia.org]

Placing duct tape over electrical terminals is just asking for trouble.

When I get a new Corvair that has aluminum ducts in it, that is the first thing I rip out. That's like transporting nitroglycerin on horseback.
It is also highly ineffective, as it transfers heat too easily to the outside air (unless you like cool air inside your car).

I've never tried corrugated drain tubing, but I know that it is awfully hard to bend in tight areas.

Replacement duct from a Corvair vendor really isn't that expensive when you consider the alternatives logically.

JMO.


To the OP: I cut off about 12" on the passenger side of a new LM installation, from what Clark's provided..

Kevin
Medina, OH

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Re: LM heater hose length
Posted by: cnicol ()
Date: December 14, 2014 08:36AM

Aside from its ability to electrically short-out on the starter's battery stud, the aluminum duct also offers improved heat transfer; its ability to dissipate heat from the heater system is unmatched.

Craig N. Coeur d'Alene ID.
66 Black Monza 4dr, 4.2L V8 49k
61 Seamist Jade Rampside 140 PG
65 Canadian Monza 4dr 110/PG 40k
66 Sprint Corsa convt - First car! Re-purchased 43 years later
2+2 gnatsuM 5691

+17 Tons of parts

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Re: LM heater hose length
Posted by: steve c goodman ()
Date: December 14, 2014 03:30PM

Since it is snowing here today thinking about GOOD heater hoses is at the top of subjects. My vote is for the heaviest RUBBER or wire wound rubber hose for insulation purposes. As has been stated, metal just allows the heat to go from the inside of the tube to the outside of the tube quickly.

The ability to short to the solenoid is also prominent. Late cars should never have that issue because the hanger draws the hose against the bulkhead at the rear seat, a long ways from the solenoid UNLESS the hanger gives way. Early cars use a rubber sleeve over the hose where it crossed over the solenoid.

best wishes, Steve
Rear Engine Spec. Inc. Golden, Colo.

1962 spyder 3.0L turbo---1965 Crown V8
1967 monza 110/4---1968 monza 110/4
1971 amante gt 110/4
CORSA/RMC/PPCC/V8 Registry

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