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Need to keep engine cool, questions:

Started by Targan, March 18, 2014, 05:14:43 PM

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Pat Conlon

Quote from: fj johnnie on March 20, 2014, 09:01:15 PM
In my opinion removing the airbox and installing the unipods will reduce the running temperature. It allows more airflow .

Common misconception.
A high efficiency exhaust system and Low restriction air filters will cause your fuel air ratio to change.
More air in and more air out of your engine will cause your engine to run lean, thus hotter, not cooler.

That's why 'proper jetting' is always #1 on the list for a cool running engine.

Jetting, jetting, jetting.
1) Free Owners Manual download: https://tinyurl.com/fmsz7hk9
2) Don't store your FJ with E10 fuel https://tinyurl.com/3cjrfct5
3) Replace your old stock rubber brake lines.
4) Important items for the '84-87 FJ's:
Safety wire: https://tinyurl.com/99zp8ufh
Fuel line: https://tinyurl.com/bdff9bf3

Targan

So I installed the oil cooler and the Uni Pods that RPM sells. The pods are causing me to run richer! Compared to the horrible (super airflow not filtering out dust) K&N pods. (I have an air/fuel ratio meter mounted so I can tell). That definitely works to my benefit though because that richer ratio will keep my engine cooler. I just have to order the temp gauge and adapter mount thing and I'm all set! Bike was getting so hot touching the plastics burned lol. Thanks for all of the advice guys!

fj johnnie

Quote from: Pat Conlon on March 20, 2014, 09:51:32 PM
Quote from: fj johnnie on March 20, 2014, 09:01:15 PM
In my opinion removing the airbox and installing the unipods will reduce the running temperature. It allows more airflow .

Common misconception.
A high efficiency exhaust system and Low restriction air filters will cause your fuel air ratio to change.
More air in and more air out of your engine will cause your engine to run lean, thus hotter, not cooler.

That's why 'proper jetting' is always #1 on the list for a cool running engine.

Jetting, jetting, jetting.
Sorry what I meant was that with the stock airbox removed, airflow around the outside of the motor is enhanced. The stock airbox will reduce airflow, as it is a big mass blocking air from flowing freely through the center of the bike.

Pat Conlon

Gotcha, remember the air box is on the other side of the heat shield and the shield physically blocks a lot of air (and heat) from passing through.

An early hard lesson I learned: Don't remove the heat shield and/or lower curtain...(don't ask)
1) Free Owners Manual download: https://tinyurl.com/fmsz7hk9
2) Don't store your FJ with E10 fuel https://tinyurl.com/3cjrfct5
3) Replace your old stock rubber brake lines.
4) Important items for the '84-87 FJ's:
Safety wire: https://tinyurl.com/99zp8ufh
Fuel line: https://tinyurl.com/bdff9bf3

movenon

Quote from: Pat Conlon on April 24, 2014, 06:54:23 PM
Gotcha, remember the air box is on the other side of the heat shield and the shield physically blocks a lot of air (and heat) from passing through.

An early hard lesson I learned: Don't remove the heat shield and/or lower curtain...(don't ask)

You read these post's and you always learn something.. I raised my shield up a little around the starter/ alt area with the thought of additional cooling.  Guess tomorrow the curtain will come back down  :dash2:
George
Life isn't about having the best, but about making the best of what you have...

1990 FJ 1200