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Who's done a coolant reroute on a 1.8?

Postby Westcoast » Tue, 28 Mar 2017 11:00 +0000

I've got a late 1993 NA 1.8 FM II. I've got my stuff together for a coolant reroute on the cold side of the engine, including the spacer from Whisper, the Kia thermostat cover, flexible radiator hose (1m long if I remember rightly) and another few bits and bobs. Oh and I have the FM crossflow rad too so the radiator neck is right at the end of the radiator, on driver's side.

I'm staring into my engine bay though, wondering how on earth I'm going to route the hose without it rubbing against fuel lines, or brake lines, or my braided clutch hose, etc. I'd prefer to keep the manifold support bracket, but not sure I can. Would be great to see how others with a 1.8 have routed the hose. The vast majority of photos on the web for this seem to be of 1.6 engines which it looks like they have more room on the intake manifold side. If anyone in the Mayo/Sligo/Roscommon/Galway area has done it on a 1.8, it would be great to see it with my own eyes. I'm in north Mayo.
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Re: Who's done a coolant reroute on a 1.8?

Postby Pops » Wed, 29 Mar 2017 2:30 +0000

I'm sure you've seen this
http://coolant-reroute.com/
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Re: Who's done a coolant reroute on a 1.8?

Postby Westcoast » Wed, 29 Mar 2017 9:41 +0000

Yes, thanks Pops, but unfortunately it doesn't seem to show examples of hose routing. That's what I'm looking for really, for 1.8s, and ideally I'd like to get a good look at one in person.

I presume that's Whisper's website is it? In fact I'm pretty sure that site didn't exist when I first started researching my reroute, but yes I have seen it since then.
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Re: Who's done a coolant reroute on a 1.8?

Postby Steve » Wed, 29 Mar 2017 11:42 +0000

not sure if you've seen these pics from Whisper :
viewtopic.php?f=14&t=6938&p=56138#p56138
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Re: Who's done a coolant reroute on a 1.8?

Postby Westcoast » Wed, 29 Mar 2017 12:03 +0000

Yes, thanks Steve. That's a 1.6 though, which I think has more room beside and under the inlet manifold. On my 1.8 there is much less room. I'll have to see if I can make my braided clutch hose sit in a different position (don't want a stainless steel braid rubbing up against coolant hose!) and I think I'll have to bend/replace at least one hard brake pipe. The latter isn't too big a deal as I have an adjustable brake proportioning valve to fit anyway.

I'm away with work for a couple of days but I'll have to remember to take a few photos of my engine bay when I'm back.
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Re: Who's done a coolant reroute on a 1.8?

Postby andrew » Thu, 30 Mar 2017 9:06 +0000

I've done it on both the 1.6 and 1.8. The hose will rub lots of things, no way around it. I ditched the mani support and the carbon canister. The hose makes changing the oil filter harder too.
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Re: Who's done a coolant reroute on a 1.8?

Postby Westcoast » Thu, 30 Mar 2017 9:42 +0000

Thanks andrew. For years and years I have always replaced the oil filter from below, after removing the manifold support bracket. I often combine it with a front brake service - run the engine up to temp, jack up the front, drain oil, service front brakes, remove oil filter (which has now cooled a bit) etc, etc. I've often thought about installing a remote oil filter relocation kit, but never got around to it yet. Besides, I don't like adding unnecessary weight to the car. :)

Do you still have the 1.8? What part of the country are you in?
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Re: Who's done a coolant reroute on a 1.8?

Postby Pops » Thu, 30 Mar 2017 10:08 +0000

This might help, if you can understand him
https://youtu.be/Xqf91ig1CqY
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Re: Who's done a coolant reroute on a 1.8?

Postby Westcoast » Thu, 30 Mar 2017 10:56 +0000

Thanks Pops, good suggestion. His installation is certainly a bit less neat than what I'm looking for! :) Also his hose routing looked a bit high, which I want to avoid so that I avoid problems with air in high points in the system - want to try to make sure that the radiator cap is the highest point.

Youtube led me to this video though, which I've actually seen before, and it's an installation guide for the IL Motorsport reroute kit, but after watching it again it looks like it could suggest a good place to route the hose too. I'll have to get back out in the garage and give the job another good coat of looking at!

https://www.youtube.com/watch?v=1y4Hf0B_cjk
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Re: Who's done a coolant reroute on a 1.8?

Postby sidewaysreilly » Fri, 31 Mar 2017 6:58 +0000

Put a piece of steel tubing in the pipework with a bracket welded on and attach it to the manifold.
The perfection of a Car's beauty is that nothing should be there for beauty's sake.
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Re: Who's done a coolant reroute on a 1.8?

Postby Steve » Mon, 03 Apr 2017 2:13 +0000

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Re: Who's done a coolant reroute on a 1.8?

Postby Westcoast » Tue, 04 Apr 2017 10:04 +0000

Yep, thanks for suggestions guys. I spent some more time on it over the weekend. I disconnected my fuel lines, braided clutch hose and a brake pipe to do a test fit of the new coolant hose. I think I can keep my manifold support bracket, which I prefer. The coolant hose will need to be strapped to the manifold to stop it rubbing against things when the engine moves - chassis, fuel/brake pipes, etc. But I think it will work.
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