Chrishoughton1989 Posted July 19, 2013 Share Posted July 19, 2013 What cap to use on civic rad ? 1.3 bar ? 1.5 bar ? Thx Quote Link to post Share on other sites
Jamie_VF22 Posted July 19, 2013 Share Posted July 19, 2013 I use a 1.3 bar one on my one pal Quote Link to post Share on other sites
Chrishoughton1989 Posted July 19, 2013 Author Share Posted July 19, 2013 Ok what is the benefits ? Could I use a standard cap ? Quote Link to post Share on other sites
Fozzie Posted July 19, 2013 Share Posted July 19, 2013 I thought Civic rads had a different thread to standard ones so I don't think you can use the standard cap?Manufactuers claim a higher pressure cap makes the system more efficient but tbh I personally think it's tosh and a standard 1.3 bar would do the job just fine Quote Link to post Share on other sites
Chrishoughton1989 Posted July 19, 2013 Author Share Posted July 19, 2013 Oh sorry I mean a standard civic rad cap. So if I used a 1.5 bar cap what would it effect ? Quote Link to post Share on other sites
Fozzie Posted July 19, 2013 Share Posted July 19, 2013 Ah ok no worries. Well in theory, a higher pressure cap means the fluid in the cooling system has a higher boiling point (because the liquid is held under a higher pressure before it is allowed to vent to the overflow bottle). Supposedly this helps the whole system to just cool more efficiently and prevents 'localised boiling' of the fluid, but like I mentioned IMO it's a bit of waste of time on a regular road car and I don't think you'd really get any measurable benefit. Generally the aftermarket caps just look prettier lol ;) Quote Link to post Share on other sites
Chrishoughton1989 Posted July 19, 2013 Author Share Posted July 19, 2013 The thing is I have one available at 1.5 bar but is this too much ? I don't want to cause problems. If its better to run a 1.3 I will order one Quote Link to post Share on other sites
Fozzie Posted July 19, 2013 Share Posted July 19, 2013 I'd be very surprised if it caused problems, an increase that small only increases the boiling point by like 10c IIRC. Tbh I'd just chuck it on there if you have it already buddy lol Quote Link to post Share on other sites
Chrishoughton1989 Posted July 19, 2013 Author Share Posted July 19, 2013 Just chuck it on lol. Any more advise lol Quote Link to post Share on other sites
Fozzie Posted July 19, 2013 Share Posted July 19, 2013 That's about all I got tbh ha! I know the principles behind it but I'm not an expert, so I can't really add much more.As I said, the actual difference between them isn't great so I it's probably 6 of one and half a dozen of the other. Hopefully someone else can add something more technical if you want a belt and braces breakdown lol Quote Link to post Share on other sites
DavidAshton Posted July 19, 2013 Share Posted July 19, 2013 If you run a higher pressure rad cap you are going to put higher pressures on a potentially old water system. Just consider that, these car's aren't as new as they once were. I run a 1.3 bar cap and certainly wouldn't risk going any higher than that. Quote Link to post Share on other sites
Chrishoughton1989 Posted July 19, 2013 Author Share Posted July 19, 2013 Ok thanks. What is a standard rad cap pressure ? Quote Link to post Share on other sites
DavidAshton Posted July 19, 2013 Share Posted July 19, 2013 0.9 bar Quote Link to post Share on other sites
daniel_g Posted July 19, 2013 Share Posted July 19, 2013 0.9 i think is standard ? Quote Link to post Share on other sites
Chrishoughton1989 Posted July 19, 2013 Author Share Posted July 19, 2013 So a standard civic rad cap on civic rad at 1.1 bar my best bet ? Quote Link to post Share on other sites
morgey Posted July 19, 2013 Share Posted July 19, 2013 If ya want have a read of this. Explains it all pretty well!http://www.tuneruniversity.com/blog/2011/06/beating-the-heat-advantage-of-a-high-pressure-radiator-cap/ Quote Link to post Share on other sites
Chris Green Posted July 19, 2013 Share Posted July 19, 2013 If ya want have a read of this. Explains it all pretty well!http://www.tuneruniversity.com/blog/2011/06/beating-the-heat-advantage-of-a-high-pressure-radiator-cap/ That's a good write up, never knew a lot of that. Nice find Quote Link to post Share on other sites
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