HPS Silicone Coolant Hose Kit
#1
HPS Silicone Coolant Hose Kit
Hi all,
Just wanted everyone to be aware that HPS makes a "full" silicone coolant hose kit. Most that I've seen are just the two big radiator hoses, which HPS makes, but they also offer this full kit with all of the 5/8" molded hoses included, plus non-perforated stainless hose clamps included:
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
These are molded and fabric reinforced true HEATER hoses, not just large diameter silicone vacuum hose. I use HPS coolant and Intercooler hoses exclusively in my car, and they are very high-quality 4-ply hoses. With the addition of some 1/4" and 3/8" silicon heater hose from Vibrant, there's officially no rubber hose in my car except fuel lines.
Just wanted everyone to be aware that HPS makes a "full" silicone coolant hose kit. Most that I've seen are just the two big radiator hoses, which HPS makes, but they also offer this full kit with all of the 5/8" molded hoses included, plus non-perforated stainless hose clamps included:
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
These are molded and fabric reinforced true HEATER hoses, not just large diameter silicone vacuum hose. I use HPS coolant and Intercooler hoses exclusively in my car, and they are very high-quality 4-ply hoses. With the addition of some 1/4" and 3/8" silicon heater hose from Vibrant, there's officially no rubber hose in my car except fuel lines.
#3
I did OEM ones not long ago, and almost all needed to be cut off, they were stuck on so hard, so it doesn't take long for it to start to deteriorate the rubber. The only thing is, you can't use factor spring clamps (which I like in places) with the silicone, because the wall thickness is greater.
Hose clamps in some spots can be a real bitch to get to.
Hose clamps in some spots can be a real bitch to get to.
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#9
Recovering Miataholic
To anyone contemplating silicone vacuum hoses, coolant hoses, etc, I would suggest a reading of the hose material test in the attached link. I bought and installed Viton (thick-wall) vacuum hoses, which have held up well for many miles/years.
The main advantage of Viton is its resistance to change at temperatures likely to be seen in the engine compartment of the FD. The main disadvantage (for me) was that I could not find hose ID's in metric sizes.
The nominal inside diameter of the "small" OEM hoses is 3.5mm. The "small" Viton hoses are 1/8" (3.175mm) ID. So the "small" hoses fit very tightly on their "pipes." The "large" OEM hoses are 6 mm ID. The "large" Viton hoses are 1/4" ID (6.35 mm), so they are loose and generally need hose clamps to secure them.
But I thought the pros outweighed the cons, and I have never regretted choosing Viton. My vacuum hoses have never transformed into "hard plastic" like the OEM hoses.
The main advantage of Viton is its resistance to change at temperatures likely to be seen in the engine compartment of the FD. The main disadvantage (for me) was that I could not find hose ID's in metric sizes.
The nominal inside diameter of the "small" OEM hoses is 3.5mm. The "small" Viton hoses are 1/8" (3.175mm) ID. So the "small" hoses fit very tightly on their "pipes." The "large" OEM hoses are 6 mm ID. The "large" Viton hoses are 1/4" ID (6.35 mm), so they are loose and generally need hose clamps to secure them.
But I thought the pros outweighed the cons, and I have never regretted choosing Viton. My vacuum hoses have never transformed into "hard plastic" like the OEM hoses.
#10
Full Member
iTrader: (4)
I've searched and googled, but I can't seem to find a How to for the heater hoses.
Will removing the IT manifold be the easiest way?
The HPS kit I bought comes with 4 heater hoses. I know that 2 of the hoses are going into the firewall on the passenger side. Where are the other 2 located?
Thanks!
Will removing the IT manifold be the easiest way?
The HPS kit I bought comes with 4 heater hoses. I know that 2 of the hoses are going into the firewall on the passenger side. Where are the other 2 located?
Thanks!
#11
There's one from the water pump housing to the hard line on the passenger side fender, then from that hardline into the firewall, then back out of the firewall to another hardline, then from that hardline runs own the firewall to the drivers side, and then from there to the block near the oil filter.
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#12
Always Bad Advice
Thanks for the report! I can't believe it was 18 years ago that I conducted the test and wrote the report. I had lost the document ages ago during one of many computer upgrades over the years and figured it was lost to antiquity.
#13
Full Member
iTrader: (4)
So sounds like taking the intake manifold off is the key. Thanks!
There's one from the water pump housing to the hard line on the passenger side fender, then from that hardline into the firewall, then back out of the firewall to another hardline, then from that hardline runs own the firewall to the drivers side, and then from there to the block near the oil filter.
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