Thermostat flange broke in half!
#1
Member
Thread Starter
Join Date: Jul 1999
Location: Chicago, IL
Posts: 496
Likes: 0
Received 0 Likes
on
0 Posts
Car: 89 IROC-Z
Engine: LB9
Transmission: 700-R4
Thermostat flange broke in half!
for no apparent reason. I put in a 180' t-stat, took it for a long spin (getting on it by the way in the summer heat to make sure the new fan switch worked) and the temp never even hit 190 for 15-20 minutes. The as I pull in the driveway smoke is POURING out from under the hood and I find it's coming from the t-stat. There's white stress marks all over at the front of the flange base where it broke. What could cause this? I just don't want it happening again. My only theory is that maybe dexcool turns to sulfuric acid when distilled water is added????
------------------
I ROCK
...so you don't have to.
------------------
I ROCK
...so you don't have to.
#3
TGO Supporter
my guess would be you had the t-stat under the houseing and tightened it down and it broke when it couldn't bend. most of us have broke one or two before. most all parts stores stoke replacements.
------------------
ICON Motorsports
1st & 3rd
MM Black Diamond 538 F&AM
------------------
ICON Motorsports
1st & 3rd
MM Black Diamond 538 F&AM
#4
Just buy a new t-stat housing and be extremly careful when you install it. I broke one torquing it down once. Dexcool is not going to turn to sulfuric acid with distilled water. GM recomends distilled water with dexcool.
------------------
82 z28 350cid, vortec heads, comp 262h cam, Holley 600cfm carb, 2in twice pipes, MSD ignition, turbo 350 trans, 3.73 posi, manly b&m megashifter
------------------
82 z28 350cid, vortec heads, comp 262h cam, Holley 600cfm carb, 2in twice pipes, MSD ignition, turbo 350 trans, 3.73 posi, manly b&m megashifter
#5
Member
Thread Starter
Join Date: Jul 1999
Location: Chicago, IL
Posts: 496
Likes: 0
Received 0 Likes
on
0 Posts
Car: 89 IROC-Z
Engine: LB9
Transmission: 700-R4
yeah that was my attempt at sarcasm. well the new one I got today is MUCH more heavy duty than the other...I think the one that broke was plastic...this one's not breaking!
#6
Supreme Member
Join Date: Jul 1999
Location: Loveland, OH, US
Posts: 18,457
Likes: 0
Received 15 Likes
on
15 Posts
Car: 4
Engine: 6
Transmission: 5
For some reason the factory casts those things out of the cheapest grade of chinesium that won't dissolve in antifreeze during the warranty period more than about 5% of the time. Replacement ones are usually cast iron, except for the chrome ones which are usually zinc. If you put in a zinc one, be prepared to change it often; it acts as a sacrificial anode and protects various other metal parts from corrosion, especially aluminum, but it does literally "dissolve" in antifreeze over time.
------------------
"So many Mustangs, so little time..."
ICON Motorsports
------------------
"So many Mustangs, so little time..."
ICON Motorsports
Thread
Thread Starter
Forum
Replies
Last Post
no green
Engine/Drivetrain/Suspension Parts for Sale
11
01-09-2016 09:22 PM
sjorgens
Suspension and Chassis
7
10-01-2015 07:54 PM