David.B Posted November 9, 2021 Report Share Posted November 9, 2021 Hi Guys and Girls Would anyone be able to tell me the O/D diameter and the I/D diameter of this hose please. I want to replace it with a coloured silicone hose and I am unsure of what size hose to order. The one on Rimmers site says it should be 76cm. This can't be right, can it ???????? In the attached picture it shows as part Nos 21 Many thanks David Triumph TR6 Metering Units _ Rimmer Bros.html Quote Link to post Share on other sites
David.B Posted November 9, 2021 Author Report Share Posted November 9, 2021 Sorry the link does not appear to be working David Quote Link to post Share on other sites
John L Posted November 9, 2021 Report Share Posted November 9, 2021 Mine measures 60cm by 8mm id John Quote Link to post Share on other sites
stuart Posted November 9, 2021 Report Share Posted November 9, 2021 Make sure it is a proper vacuum spec hose. Stuart. Quote Link to post Share on other sites
Steves_TR6 Posted November 9, 2021 Report Share Posted November 9, 2021 Is this red enough David ….. https://www.ebay.co.uk/itm/RAMAIR-Silicone-8mm-x-1m-Vacuum-Hose-Boost-Water-Pipe-Line-Red-/350634351205?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l49286&mkrid=710-127635-2958-0 Quote Link to post Share on other sites
astontr6 Posted November 9, 2021 Report Share Posted November 9, 2021 3 hours ago, stuart said: Make sure it is a proper vacuum spec hose. Stuart. +1 Bruce, I am not certain that a silicone hose is suitable material for that application? Quote Link to post Share on other sites
FatJon Posted November 9, 2021 Report Share Posted November 9, 2021 1 hour ago, astontr6 said: +1 Bruce, I am not certain that a silicone hose is suitable material for that application? It will be fine. Used that extensively on mine. The wall is quite thick so no problems with it collapsing under vacuum. Totally unsuitable for forced induction though as it turns into a ballon too easily, not that that’s usually a TR problem. Quote Link to post Share on other sites
PodOne Posted November 11, 2021 Report Share Posted November 11, 2021 On 11/9/2021 at 9:10 PM, FatJon said: It will be fine. Used that extensively on mine. The wall is quite thick so no problems with it collapsing under vacuum. Totally unsuitable for forced induction though as it turns into a ballon too easily, not that that’s usually a TR problem. It's used in lots of boosted applications. I've never had any issues in the past as long as you use decent supplier; eg Samco, TWR Quote Link to post Share on other sites
FatJon Posted November 11, 2021 Report Share Posted November 11, 2021 Yes but that link was not Samco or TWR. I bought some nameless wonder 3mm silicone and at 25PSI it let go and closed the wastegate, the boost was spectacular but short lived. Luckily I also went cheap on the intercooler hose clamps which let go before any harm was done. So now I put my trust in reinforced wall for boost. Quote Link to post Share on other sites
Andy Moltu Posted November 13, 2021 Report Share Posted November 13, 2021 Nothing intrinsically wrong with silicone hoses for vacuum purposes, but as with rubber hoses, they have to be suitably built to avoid collapsing under vacuum applications. Radiator hoses are built to take pressure from the inside and vacuum hoses the reverse. Quote Link to post Share on other sites
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