GMCforum
For enthusiast of the Classic GMC Motorhome built from 1973 to 1978. A web-based mirror of the GMCnet mailing list.

Home » Public Forums » GMCnet » making transmission lines ?
making transmission lines ? [message #97286] Thu, 26 August 2010 10:29 Go to next message
hertfordnc is currently offline  hertfordnc   United States
Messages: 1164
Registered: September 2009
Location: East NC
Karma: 0
Senior Member
THe transmission lines on the Revcon need to be replaced.

I'm pretty sure the ready made lines from Applied GMC would still need to be modified to fit the REVCON

I can bend tubing and i can make a decent flare, but it never hurts to ask because we don't always know what we don't know.

dave
Re: making transmission lines ? [message #97292 is a reply to message #97286] Thu, 26 August 2010 10:45 Go to previous messageGo to next message
Rusty is currently offline  Rusty   United States
Messages: 197
Registered: October 2005
Location: Philadelphia Pa
Karma: 0
Senior Member
They have to be hi temp and compression. Call a few of the NAPA stores you are close to. Some of them have in-ship fabrication.

Rusty
75 Glenbrook
Philadelphia Pa
Re: making transmission lines ? [message #97293 is a reply to message #97286] Thu, 26 August 2010 10:56 Go to previous messageGo to next message
fred v is currently offline  fred v   United States
Messages: 999
Registered: April 2006
Location: pensacola, fl.
Karma: 0
Senior Member
i think there are some pic's on the photo site that show how to do this. one shows how to reroute the tube up behind the engine and to the right rather than the OEM way. there is some info on Gene Fishers site about fittings.


Fred V
'77 Royale RB 455
P'cola, Fl
Re: making transmission lines ? [message #97300 is a reply to message #97286] Thu, 26 August 2010 11:40 Go to previous messageGo to next message
g.winger is currently offline  g.winger   United States
Messages: 792
Registered: February 2008
Location: Warrenton,Missouri
Karma: 0
Senior Member
I purchased 20' of stainless 3/8 tubing and made my own. I think the cost was 32 or 42 bucs. Used some of it to make fuel lines. BUT,,,,its a welded line ground and polished real pretty on the outside. So when I made the flairs I had a problem with leaks because the welded seam on the inside wasn't smooth. SOOO, I slotted a small dowel and chucked it in a drill and smoothed the weld by holding the drill at a 45. Used 600. Then 1500. Worked pretty well but you have to clean real well of course.GL,,,PL
Re: making transmission lines ? [message #97310 is a reply to message #97286] Thu, 26 August 2010 12:32 Go to previous message
zhagrieb is currently offline  zhagrieb   United States
Messages: 676
Registered: August 2009
Location: Portland Oregon
Karma: 0
Senior Member
Dave,

It's not a difficult task to make your own especially if you can use the old ones as a guide. All auto parts stores carry straight lengths of steel line flared at the ends with male fittings, just match the diameter and fitting thread to what you now have. Longer lengths are available in rolls but I've found it difficult to get nice straight runs with this stuff.

If you use the straight lengths you won't find the exact lengths you need so will need to cut, flare and join standard lengths. A tubing cutter and a flare tool are necessary. A double flare gives a better seal than single, it's necessary for high pressure brake lines and not a bad idea for the lower pressure of transmission lines. You'll also need some female couplings and male fittings to join the several lengths together. Careful bending and long radius turns can be made without a tool but a bending tool is an inexpensive investment.

The auto parts store will have the double flare tool should you go that route, about $30. The cutter and bender and single flare tool can be found at any home center or plumbing supply.

Be sure to deburr any cut ends carefully before you flare. Don't forget to put the fittings on first!

Glenn


Glenn Giere, Portland OR, K7GAG '73 "Moby the Motorhome" 26'

[Updated on: Thu, 26 August 2010 12:36]

Report message to a moderator

Previous Topic: [GMCnet] Power distribution using circuit breakers
Next Topic: [GMCnet] 403 engine, rebuild or replace with ?
Goto Forum:
  


Current Time: Sun Nov 10 16:15:26 CST 2024

Total time taken to generate the page: 0.00952 seconds