Author Topic: Running Cooler 1.9 AAZ ( Coolant Temp ) hose upgrade  (Read 2923 times)

July 13, 2010, 07:56:22 am

GEE-BEE

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    1981 with South African front end ,42 k original
Running Cooler 1.9 AAZ ( Coolant Temp ) hose upgrade
« on: July 13, 2010, 07:56:22 am »
I checked my temp ( coolant )and after installing the one piece design silicone engine hoses my temp are down 15 to 22 degree's.

The plastic T fitting the connects the three hoses together was causing some flow restrictions.
My new production is a one piece design

Iam sure the 5 ply design will be the last set.

Let me know if you would like a pic

[email protected]

The install was easy , I did remove the alternator and bracket after draining the coolant, while i was there i did replace the two o'rings on the crank breather.

This is where my tiny leak was at.....

GB
1.9 AAZ, CHD 5spd with Peloquin
KO4/KO3 Hybrid turbo
Giles Pump OHC
Complete Techtonics 2'5 S/S DP and Exhaust
Coilovers, MKII Pedal Swap,G60 BRAKES
MK1 JETTA DASH
675MM 16V radiator (MKII) PASSAT DUAL FAN
42K original miles , South African Front End
15x6 Le Casletts 195-45-15

Reply #1July 14, 2010, 03:32:36 pm

theman53

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Re: Running Cooler 1.9 AAZ ( Coolant Temp ) hose upgrade
« Reply #1 on: July 14, 2010, 03:32:36 pm »


« Last Edit: July 14, 2010, 04:14:30 pm by theman53 »

Reply #2July 14, 2010, 03:57:05 pm

wolf_walker

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Re: Running Cooler 1.9 AAZ ( Coolant Temp ) hose upgrade
« Reply #2 on: July 14, 2010, 03:57:05 pm »
I've always sort of wanted a diesel to run as warm as possible and be safe.  They seem to run better, cleaner and get better MPG/power.  I'd just noticed last week I put an 80C t-stat in for instance, and with the correct 87C the thing runs much better.  The difference in the two is quite apparent on the gauge.  Just  a thought.
Many things we do naturally become difficult only when we try to make them intellectual subjects. It is possible to know so much about a subject that you become ignorant.
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Reply #3July 14, 2010, 06:18:10 pm

GEE-BEE

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Re: Running Cooler 1.9 AAZ ( Coolant Temp ) hose upgrade
« Reply #3 on: July 14, 2010, 06:18:10 pm »
I start seeing coolant temp's around 200 plus at 75/80 mph

10 psi / 765 egt

MK1 caddy with a/c type radiator, next will be a 16 v scirocco type with dual electric fan's

My Mcnally gauges dont lie....

My local wrench says the #1 problem is the plastic t fitting ( chinese made ) on coolant hose assy's

There even in a German meyle box...

GB
1.9 AAZ, CHD 5spd with Peloquin
KO4/KO3 Hybrid turbo
Giles Pump OHC
Complete Techtonics 2'5 S/S DP and Exhaust
Coilovers, MKII Pedal Swap,G60 BRAKES
MK1 JETTA DASH
675MM 16V radiator (MKII) PASSAT DUAL FAN
42K original miles , South African Front End
15x6 Le Casletts 195-45-15

Reply #4July 16, 2010, 01:44:22 pm

TurboJ

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Re: Running Cooler 1.9 AAZ ( Coolant Temp ) hose upgrade
« Reply #4 on: July 16, 2010, 01:44:22 pm »
I've always sort of wanted a diesel to run as warm as possible and be safe.  They seem to run better, cleaner and get better MPG/power.  I'd just noticed last week I put an 80C t-stat in for instance, and with the correct 87C the thing runs much better.  The difference in the two is quite apparent on the gauge.  Just  a thought.

Where can you get a 80 C thermostat? I would really like to have a handful of those. I can't seen to find any, anywhere.
For the high-hp tuned IDIs a cooler t-stat would be really useful, to preserve the cylinder head.
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Jetta II 1.6 TD 'Project 200'

Reply #5July 16, 2010, 03:00:23 pm

Reply #6July 17, 2010, 09:17:06 pm

wolf_walker

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Re: Running Cooler 1.9 AAZ ( Coolant Temp ) hose upgrade
« Reply #6 on: July 17, 2010, 09:17:06 pm »
I've seen stupid high oil temps on turbo's running hard, but never seen the coolant gauge budge.  Weird.  Those oil temps though, we put a huge thermostatically controlled oil cooler on the 1.9L TD in the 82 Caddy years ago, fixed it right up.
Many things we do naturally become difficult only when we try to make them intellectual subjects. It is possible to know so much about a subject that you become ignorant.
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