Hose sizes

[slangley]

I'm trying to get the inner diameter of the heater hose and the small overflow hose on the radiator. Without guessing or tyring to measure the inner diameter with a ruler, does anyone know the exact ID's?

Thanks

-sml-

[steve_D]

My heater hose is marked 16 X 23.
overflow is not marked but is about 7-8mm
Steve

[slangley]

I came up with 7mm for the overflow as well. The heater hose says 16x23 but no one that I've spoken to knows what that is for standard US hose sizes.

Reason for the questions is that I want to use a colored hose instead of black.

[USCANAM]

Those 2 -8 Stainless hoses right in front of the large pipe going to the waterpump are my heater hoses.
http://home.comcast.net/~rosenracing3/wsb/html/view.cgi-photo.html--SiteID-631733.html
We did not use any rubber hoses in the car.
You might want to think about this route.
Jack

[mrflibbles]

Apparently its not the size of your hose, but the quality that matters!

[andycanam]

I never used any rubber either..... and I now have 4 kids

[slangley]

USCANAM said:

We did not use any rubber hoses in the car. You might want to think about this route. Jack

Jack,

I have thought about using all stainless as well. Since you are in the US, do you have a recommendation for the least expensive place to purchase ss hose and couplings. I've looked into replacing the A/C hose as well. Gets costly with those fittings.

[ultimacz]

Just a word of warning: we had the rubber overflow hose fitted as supplied by the factory. This hose is obviously not sufficiently heat resistent. After 1/2 year it broke and we had to replace it (broke on 2 cars, independently). Replacing was a night mare, we had to take out the aluminium panels... My advice therefore: use the best quality hose you can get!

[USCANAM]

slangley said:

USCANAM said: We did not use any rubber hoses in the car. You might want to think about this route. Jack Jack, I have thought about using all stainless as well. Since you are in the US, do you have a recommendation for the least expensive place to purchase ss hose and couplings. I've looked into replacing the A/C hose as well. Gets costly with those fittings.

Steve
http://summitracing.com
It's costly, but worth it
Jack

>> Edited by USCANAM on Tuesday 2nd March 13:03

[slangley]

Jack,

I've checked out Summit. Actually purchased some earl fittings and braided fuel line from them.

Ebay has some good deals on bulk hose (20ft to 35ft) around $50 US.

[mkoch1]

you will find aeroquip lines are cheaper than earl's. Try www.racerpartswholesale.com/aero.htm for aeroquip lines.

mark

[US-GTR]

slangley said:

The heater hose says 16x23 but no one that I've spoken to knows what that is for standard US hose sizes.

Hose is aprox 5/8 US fractional size.

[mkoch1]

ultimacz said:

Just a word of warning: we had the rubber overflow hose fitted as supplied by the factory. This hose is obviously not sufficiently heat resistent.

To be on the safe side I replaced the factory rad return line last night. I used a 12ft piece of aeroquip steal braided -06 line for those of you who where wondering what size line to use.

Mark

[slangley]

How well did the -6 hose fit. They make a -5 hose. I've been debating between a -6 and a -5 for the rad.

[mkoch1]

the -6 line was hard to get over the nipple on the rad. I really had to work it to get the outer steel braid to open up some. I don't think a -5 would fit.

mark

[Igor+]

Why do you use Stainless braided hoses for radiator upper line?
Swirl pot cap limits pressure in the cooling system.
I think rubber is more than enough.

Anyway, you use rubber connectors for alloy cooling pipes with much less pressure rating then upper line...

Any secret I have to know?

[mkoch1]

I went with the stainless just to be on the safe side, the fact that once the body is on the brake + coolant lines are almost impossible to access worries me. This is the same reason I ran a second hard brake line down the side of the car, just in case something happens to the stainless one. Call me paranoid but if something ever happens I'll be glad I did it.

Mark

[Igor+]

In this case, you have to double wiring loom too.

[slangley]

I'll be putting corrugated tubing between the engine compartment, under dash and battery area for any future wiring needs.

[mkoch1]

[quote=Igor+]In this case, you have to double wiring loom too. [/quote]

I'll do that right after I figure out a way to install a second steering wheel.

Being serious the extra hard brake line is a good idea. I am not sure I will like the soft pedal feel the braided brake lines will give me. Since I already installed the hard line down the side of the car, it will be very easy to switch over to hard lines everywhere if I don’t like the feel. I could have gone with hard lines from the beginning but it seemed like a lot of work, not knowing what the braided line feel like.

Second coolant line was just because I couldn’t remove the stock on.

off to figure out where to stick 4 full size spare tires.

mark

>> Edited by mkoch1 on Thursday 11th March 18:13