Best Thermostat to pass CA smog

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Jun 9, 2003 | 11:08 PM

tamonez

Thread Starter

Junior Member

Joined: Sep 2001

Posts: 60

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From: Oakland, CA, USA

Car: 88 Iroc

Engine: 305 TPI

Transmission: 5 speed

Best Thermostat to pass CA smog

I was having problems with my car running hot. I got a 160 stat and now it runs way cold. I just read somewhere that 160 will make my car produce higher emissions, is this true if so what would be the best for emission? should I stick with stock?
Thank you

Jun 10, 2003 | 05:16 AM

Danno

Supreme Member

Joined: Aug 2001

Posts: 1,896

Likes: 1

From: Warrington, PA USA

Car: "02 z-28

Engine: LS-1

Transmission: 4L60E

stock 195 deg will be best.

Jun 10, 2003 | 12:38 PM

MdFormula350

TGO Supporter

Joined: Nov 2001

Posts: 11,634

Likes: 3

From: Maryland; USA

a 180 stat would be a good compromise between the both. thats what i use now, u still can let the car sit for awhile and warm up.

Jun 23, 2003 | 07:13 PM

T/A gets T&A

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Joined: Apr 2003

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Even though it's a PITA...I say use the stock 195 for the test, and switch to 180 afterwards.

Jun 24, 2003 | 11:18 PM

Tremo

Senior Member

Joined: Aug 2001

Posts: 814

Likes: 2

From: San Jose, CA, USA

Car: 88 IROC-Z - original owner!

Engine: LB9 with K&Ns, MSD, Foil, Taylor

Transmission: WC T-5

Axle/Gears: BW 9-bolt, 3.45 posi

Nah, I pass CA emissions with a 180 t-stat. All you have to do is dump a bunch of fuel alcohol in the gas tank before you take it in to get smogged. Before I used alcohol I barely passed. Last time, with alcohol, I passed with flying colors. You can get a gallon of fuel alcohol at most hardware stores.