1.8t Top Coolant Hose.

louis71 · 29th April 2014, 17:44

Hello All

I have sprung a leak on one of my top coolant hoses, it's the one from the 'T' piece to the radiator. There's a silicone hose company near me so I just need to know the bore diameter please?

It's number 5 in the diagram

Many thanks peeps

MG Tom · 29th April 2014, 18:05

32mm.

louis71 · 29th April 2014, 18:48

Quote:

Originally Posted by MG Tom

32mm.

Nice one!

louis71 · 29th April 2014, 20:00

Gonna go for red I think

T-Cut · 29th April 2014, 22:20

I replaced that one and the one from the head to the T-piece (using a short straight and a long 90° elbow.This causes the downpipe to the PRT to be deflected from the vertical so it has to be re-accomodated by removing the holding bracket and making a new bracket. Not an ideal solution, but the silcone pipes are a lot more business-like.

TC

arodriguez · 29th April 2014, 22:29

Are the silicon hoses okay with OAT? I read somewhere that they react and you have to specify the rubber lined ones.

I bought a 1m hose (EDPM rubber) from Auto Performance (Ebay) for £6.35. I was half thinking of chopping it up and offering it to other members as the Rimmer hoses are £30. Hoseworld.com also do EDPM in straights, elbows, angles etc.

MG Tom · 30th April 2014, 05:18

Most silicone hoses are rubber lined anyway. Autosiliconehoses ones are

T-Cut · 1st May 2014, 17:55

Quote:

Originally Posted by arodriguez

Are the silicon hoses okay with OAT?

Yes, if the cooling system is maintained as set down in the schedules. In poorly maintained, leaky/overheating systems, OAT can plasticise silicone and other synthetic polymers. The majority of popular car manufacturers use OAT these days, so it would be remise of the hose industry not to recognise that. Any off the shelf silicone hose will be fine, but for those who particularly need it (and are prepared to pay) you can get specifically OAT resistant silicone hoses that go beyond the usual fluorosilicone linings. I have standard fluoro lined silicone on my 1.8T and have no qualms whatsoever, but - like choosing your antifreeze - it's your choice.

TC

29th April 2014, 17:44	#1
louis71 Avid contributor MG ZT 1.8T+ Join Date: Aug 2012 Location: Republik Of West Yorkshire Posts: 201 Thanks: 118 Thanked 24 Times in 22 Posts	1.8t Top Coolant Hose. Hello All I have sprung a leak on one of my top coolant hoses, it's the one from the 'T' piece to the radiator. There's a silicone hose company near me so I just need to know the bore diameter please? It's number 5 in the diagram Many thanks peeps __________________ Jobs done with help from this forum:- Head Gasket/Belts/Water Pump. T4 session and spare key fob reprogram (thanks BigRuss). Shannon Tube Replaced. Boot Leak fixed. Bonnet Cable fix. Additional Boot LED lights fitted. Plenum Drains cleaned. Air Bag warning light. Low Fan Speed Resistor Replaced. Drivers door central locking (thanks Unclefista). Handbrake compensator mod (thanks Harry). Alloy Wheel Refurb. New Turbocharger. 190 front brakes/caliper/discs upgrade.

29th April 2014, 18:05	#2
MG Tom Posted a thing or two ex. MG ZT+ Join Date: May 2013 Location: Northampton-ish Posts: 1,484 Thanks: 156 Thanked 98 Times in 95 Posts	32mm. __________________ '03 MG ZT+ 1.8T X-Power Grey with Monogram 'WTD' black alcantara trim. [SIGPIC][/SIGPIC] My project thread HERE

29th April 2014, 20:00	#4
louis71 Avid contributor MG ZT 1.8T+ Join Date: Aug 2012 Location: Republik Of West Yorkshire Posts: 201 Thanks: 118 Thanked 24 Times in 22 Posts	Gonna go for red I think __________________ Jobs done with help from this forum:- Head Gasket/Belts/Water Pump. T4 session and spare key fob reprogram (thanks BigRuss). Shannon Tube Replaced. Boot Leak fixed. Bonnet Cable fix. Additional Boot LED lights fitted. Plenum Drains cleaned. Air Bag warning light. Low Fan Speed Resistor Replaced. Drivers door central locking (thanks Unclefista). Handbrake compensator mod (thanks Harry). Alloy Wheel Refurb. New Turbocharger. 190 front brakes/caliper/discs upgrade.

29th April 2014, 22:29	#6
arodriguez Loves to post Rover 75 Club 1.8T SE Join Date: Mar 2013 Location: Bristol Posts: 310 Thanks: 28 Thanked 35 Times in 32 Posts	Are the silicon hoses okay with OAT? I read somewhere that they react and you have to specify the rubber lined ones. I bought a 1m hose (EDPM rubber) from Auto Performance (Ebay) for £6.35. I was half thinking of chopping it up and offering it to other members as the Rimmer hoses are £30. Hoseworld.com also do EDPM in straights, elbows, angles etc. __________________ Tony

30th April 2014, 05:18	#7
MG Tom Posted a thing or two ex. MG ZT+ Join Date: May 2013 Location: Northampton-ish Posts: 1,484 Thanks: 156 Thanked 98 Times in 95 Posts	Most silicone hoses are rubber lined anyway. Autosiliconehoses ones are __________________ '03 MG ZT+ 1.8T X-Power Grey with Monogram 'WTD' black alcantara trim. [SIGPIC][/SIGPIC] My project thread HERE

29th April 2014, 22:20	#5
T-Cut This is my second home Rover75 and Mreg Corsa. Join Date: Nov 2006 Location: Sumweer onat mote o'dust (Sagin) Posts: 21,752 Thanks: 341 Thanked 3,660 Times in 2,924 Posts	I replaced that one and the one from the head to the T-piece (using a short straight and a long 90° elbow.This causes the downpipe to the PRT to be deflected from the vertical so it has to be re-accomodated by removing the holding bracket and making a new bracket. Not an ideal solution, but the silcone pipes are a lot more business-like. TC