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Author Topic:   Radiator Size
Dirt Maniac

Total posts: 142
posted February 26, 2005 11:07 AM  
Ive always ran a 31" radiator, with 1 to 1 pulleys and 15 fan and a stock water pump, on a 9 to 1 gas engine. I would like to save some weight, would a 22 inch 2 core radiator with 17" fan cool, and possibly a good high flowing racing water pump?

Dirt Forum Champ
Total posts: 578
posted February 26, 2005 11:36 AM  
we switched from a 31 to a 27.5 last year and didnt run any hotter. i have a friend who runs a 22" but he also has no nose piece and has alot of airflow to the rad/motor. he also runs 12 to 1 motors. with only 9 to 1 compression you'd be safe going down that small with a GOOD pump (stewart, moroso ect.)


Dirt Maniac

Total posts: 131
posted February 27, 2005 08:17 AM  
I've been running a 22" for 2 years now. 9:1 gas, stock pump, 17" fan, good shroud, 190*, works good.

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