VWDiesel.net The IDI, TDI, and mTDI source.

Engine Specific Info and Questions => IDI Engine => Topic started by: GEE-BEE on July 13, 2010, 07:56:22 am

Title: Running Cooler 1.9 AAZ ( Coolant Temp ) hose upgrade
Post by: GEE-BEE 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

Title: Re: Running Cooler 1.9 AAZ ( Coolant Temp ) hose upgrade
Post by: theman53 on July 14, 2010, 03:32:36 pm

(http://c2.ac-images.myspacecdn.com/images02/91/l_76ca895a3e2a408c8dc6e3005b1cb5bd.jpg)
(http://c1.ac-images.myspacecdn.com/images02/147/l_f125f6f2188246ca807b4d50b5405f58.jpg)
(http://c4.ac-images.myspacecdn.com/images02/94/l_fc1a5fd2863541d08faf05d4b90020cf.jpg)

Title: Re: Running Cooler 1.9 AAZ ( Coolant Temp ) hose upgrade
Post by: wolf_walker 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.

Title: Re: Running Cooler 1.9 AAZ ( Coolant Temp ) hose upgrade
Post by: GEE-BEE 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

Title: Re: Running Cooler 1.9 AAZ ( Coolant Temp ) hose upgrade
Post by: TurboJ on July 16, 2010, 01:44:22 pm

Quote from: wolf_walker 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.

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.

Title: Re: Running Cooler 1.9 AAZ ( Coolant Temp ) hose upgrade
Post by: theman53 on July 16, 2010, 03:00:23 pm

http://www.autohausaz.com/search/product.aspx?sid=5hcbcy55eru3cczrefmwr5jq&makeid=800026@VW&modelid=1282867@JETTAGLTDI&year=1986&cid=16@CoolingSystem&gid=2200@Thermostat (http://www.autohausaz.com/search/product.aspx?sid=5hcbcy55eru3cczrefmwr5jq&makeid=800026@VW&modelid=1282867@JETTAGLTDI&year=1986&cid=16@CoolingSystem&gid=2200@Thermostat)

Title: Re: Running Cooler 1.9 AAZ ( Coolant Temp ) hose upgrade
Post by: wolf_walker 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.