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Author Topic: Hoses mod at Cylinder #4  (Read 211 times)
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Nigel
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« on: September 04, 2021, 06:06:17 PM »

Following on from chats at Betameeta21, I want to get
some hot coolant flowing at Cyl #4 with the heater tap off.

Access to the heater pipe from the water pump is difficult [but not impossible]
however I have an alternative idea to run past you.
As per the pic, would a connection between the pipe from #4 and the
lower bypass pipe before the thermostat be sufficient?

Nigel


* 20210904_174743_resized.jpg (244.81 KB, 490x1008 - viewed 62 times.)
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1984 2.0 Carb HPE [ex Aus] Silver..turning to Grey Finanza.
2007 Mazda 6 2.3 [current daily, highly recommended]
The past:
1980 2.0 HPE White in South Africa [hope it survives!]
1976 1.6 Coupe Lancia Blu [PFG 76R] [probably deceased]
oh,and an Uno Turbo 1997 also in SA [stolen,never recovered]
peteracs
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« Reply #1 on: September 04, 2021, 09:08:35 PM »

Hi Nigel

It would work for cyl 4, but where would you take the heater from?

I did forget you asked me this last weekend (or someone did) and I will photo what I did for my setup. This is a pre facelift so not sure if the heater in the facelift has similar entry/exit points on the bulkhead.

Peter
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Beta Spyder S2 pre F/L 1600
Saab 9-3 1.9Tid Cabrio
peteracs
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« Reply #2 on: September 04, 2021, 10:28:09 PM »

Hi Nigel

Sorry, a bit slow to engage brain, I assume you mean to T off the existing exit from cyl 4, one way to the heater, the other to the return pipe. It should work fine.

Peter
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Beta Spyder S2 pre F/L 1600
Saab 9-3 1.9Tid Cabrio
Nigel
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« Reply #3 on: September 05, 2021, 08:29:39 AM »

Hi Peter,
Having re-read, I didn't describe in enough detail.

Without actually saying it, my question was one of coolant flow direction as well.

As far as I can tell, my plan should not conflict flow.

Thanks, N.
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1984 2.0 Carb HPE [ex Aus] Silver..turning to Grey Finanza.
2007 Mazda 6 2.3 [current daily, highly recommended]
The past:
1980 2.0 HPE White in South Africa [hope it survives!]
1976 1.6 Coupe Lancia Blu [PFG 76R] [probably deceased]
oh,and an Uno Turbo 1997 also in SA [stolen,never recovered]
peteracs
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« Reply #4 on: September 05, 2021, 10:55:52 AM »

Hi Nigel

The hose from cyl 4 goes to the heater and then connects to the lower water pipe near the water pump, so connecting in anywhere along the lower pipe should be fine. The following photos show the mod I did to the hose from cyl 4 in the first photo and the return from the heater in the second. They are joined via a short bypass piece of hose using T pieces. I just noticed I will need to keep an eye on the joining hose as runs close to the exhaust, so may need some protection.

Peter


* 50A37F1A-8E52-42DC-83E8-7F00704516D8.jpeg (104.25 KB, 640x480 - viewed 52 times.)

* 306A374B-B2E4-4066-94CE-FCC169D62A02.jpeg (94.92 KB, 640x480 - viewed 52 times.)
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Beta Spyder S2 pre F/L 1600
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rossocorsa
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« Reply #5 on: September 05, 2021, 01:12:10 PM »

The Lancia solution is an extra connection on the top coolant pipe that connects to the exit in the head at cylinder 3/4 then out to heater near the corner (excuse untidy engine bay work in (slow) progress.


* IMG_20210905_132937__01__01.jpg (411.03 KB, 1174x1017 - viewed 55 times.)
« Last Edit: September 05, 2021, 01:33:34 PM by rossocorsa » Logged
Nigel
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« Reply #6 on: September 05, 2021, 03:43:05 PM »

Thanks Alan and Peter.

Early last year, I made up an angled piece of plumbing copper [28mm] as a simple
connector to the thermostat. It was easy to solder a T into that.
I made up another 15mm T at the heater pipe joint [which was already there,
conveniently], and linked them together.

I ran the engine from cold, and the warm-up time is much reduced. I'm getting heat to #4 almost
instantly, whereas before that pipe had zero flow.
As it happens, the new rad switch [88/83] arrived, and fitted, now the fan is kicking in much earlier.

I appreciate that this mod won't work for most, but it's just one more way to do it.
 
 


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* 20210905_100247_resized.jpg (226.19 KB, 1008x490 - viewed 53 times.)

* 20210905_101642_resized.jpg (264.19 KB, 1008x490 - viewed 51 times.)
Logged

1984 2.0 Carb HPE [ex Aus] Silver..turning to Grey Finanza.
2007 Mazda 6 2.3 [current daily, highly recommended]
The past:
1980 2.0 HPE White in South Africa [hope it survives!]
1976 1.6 Coupe Lancia Blu [PFG 76R] [probably deceased]
oh,and an Uno Turbo 1997 also in SA [stolen,never recovered]
peteracs
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« Reply #7 on: September 05, 2021, 04:19:54 PM »

Hi Nigel

Difficult for me to look into an engine bay and see central heating parts, but can only commend the neatness of the solution!

I assume the zero flow was due to heater valve being switched off?

Peter
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Beta Spyder S2 pre F/L 1600
Saab 9-3 1.9Tid Cabrio
Nigel
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« Reply #8 on: September 05, 2021, 04:49:10 PM »

Hi Peter,
Yes, heater valve off.
I recall some guys saying they kept the heater on to create flow,
but I didn't want to do that all the time.

And yes, offensive to some!

Nigel
Logged

1984 2.0 Carb HPE [ex Aus] Silver..turning to Grey Finanza.
2007 Mazda 6 2.3 [current daily, highly recommended]
The past:
1980 2.0 HPE White in South Africa [hope it survives!]
1976 1.6 Coupe Lancia Blu [PFG 76R] [probably deceased]
oh,and an Uno Turbo 1997 also in SA [stolen,never recovered]
peteracs
Administrator
Legendary Member
******
Offline Offline

United Kingdom United Kingdom

Posts: 2755



« Reply #9 on: September 05, 2021, 11:22:36 PM »

Hi Nigel

You could paint the copper fittings black!

Peter
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Beta Spyder S2 pre F/L 1600
Saab 9-3 1.9Tid Cabrio
Nigel
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United Kingdom United Kingdom

Posts: 419



« Reply #10 on: September 06, 2021, 04:53:29 PM »

Hi Nigel

You could paint the copper fittings black!

Peter

Brasso came to mind  Grin Grin Grin
Logged

1984 2.0 Carb HPE [ex Aus] Silver..turning to Grey Finanza.
2007 Mazda 6 2.3 [current daily, highly recommended]
The past:
1980 2.0 HPE White in South Africa [hope it survives!]
1976 1.6 Coupe Lancia Blu [PFG 76R] [probably deceased]
oh,and an Uno Turbo 1997 also in SA [stolen,never recovered]
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