Does the sponge serve any purpose, or can I lose it?

 

Bert..........its used as insulation.

Here's a solution John P used:

 

PS ... you've already lost it , by the looks of the pic.

The 1/2" pipe insulation Malcolm shows will do very well! - two 3' lengths for $1 here.

 

This stuff was eliminated somewhere in the 90s. If you buy replacement rail covers now, you get ones with heavy foam molded in, although it does not insulate the underside. I've done the pipe insulation mod.

 

Sorted! Thanks all for the usual quick responses!

 

The replacement covers are not that expensive.

 

Us Murph SC guys run 'em nekkid...........

 

The early 32Vs were naked from the factory!

 

Bill - did you install in situ or with the rails off?

Alan

 

Phew! I thought someone had stripped mine afterward. Thanks.

 

the flyin' scotsman wrote: Bert..........its used as insulation. Here's a solution John P used: http://forums.rennlist.com/upload/svc_intake_9.jpg

Nifty. I was wandering arounbd in Home Despot today and noticed they carried a foam panel insulation adhesive. That might save some detail work with zip ties.

 

Alan: You should be able to do it in situ.

 

Does anyone know what effect this insulation has on fuel temp? With/without? Fuel is constantly recirculated back to the fuel tank, right?

Also, isn't there a fuel line cooler/heater thingy at the firewall? What does that device do?

Would it be helpful to insulated the fuel rails on an '85?

Thanks

 

I suspect that the purpose was noise insulation, rather than heat insulation.

 

I would leave it as is. One less thing to get soaked in gas and catch on fire.