Author Topic: running hot (Read 4910 times)

aberegg05 · « **on:** April 06, 2014, 11:19:09 PM »

Was doin some riding today and my temp was up to 200. Anyone got some tips how to keep my temps down? Its 330+4 esr with the trx9b pipe. Stock rad. Was a good normal running temp?

Brett · « **Reply #1 on:** April 07, 2014, 02:40:58 AM »

You can always try Redline water wetter and an inline cooler/heatsink if you don't want to spend the money on an oversized rad

-Brett-

rsss396 · « **Reply #2 on:** April 07, 2014, 08:03:32 AM »

The more HP you make the more BTU's are absorbed by the radiator, a new stock radiator was designed to properly cool a 250cc engine making 30-35hp. Its really time to move up to a larger capacity radiator once you are at the size and HP you are at.
I have ran a PWR radiator for along time but I know there are double pass radiators that probably work even better.

rablack21 · « **Reply #3 on:** April 07, 2014, 08:54:44 AM »

Quote from: rsss396;31036

The more HP you make the more BTU's are absorbed by the radiator, a new stock radiator was designed to properly cool a 250cc engine making 30-35hp. Its really time to move up to a larger capacity radiator once you are at the size and HP you are at.
I have ran a PWR radiator for along time but I know there are double pass radiators that probably work even better.

Who makes a double pass, Dave?

rablack21 · « **Reply #4 on:** April 07, 2014, 08:57:22 AM »

Like Brett said, you can use something like Redline Water wetter or Amsoil Dominator coolant boost.That will help bring it down some. This really serves more as just a band aid type fix. However, depending on how you were riding, 200° is really not that bad of a temp, especially if you were riding kinda slow through trails where there is not much airflow.

rsss396 · « **Reply #5 on:** April 07, 2014, 09:36:04 AM »

I thought AFCO use to make one for the 250R

rablack21 · « **Reply #6 on:** April 07, 2014, 10:36:11 AM »

Quote from: rsss396;31049

I thought AFCO use to make one for the 250R

They do. I forgot about them. Now I am trying to find where to even buy one from. I would like to have one.

aberegg05 · « **Reply #7 on:** April 07, 2014, 12:53:52 PM »

What about those asi performance rads on ebay? I'm not to excited about spending 500 on a new rad.
What about the stinger size on my 9b pipe? Myth or truth?

F-Red · « **Reply #8 on:** April 07, 2014, 01:08:44 PM »

A good clean stock flowing radiator, should cool well enough. Those ebay radiators kind of scare me. Who's making them? Jerry Hall has written extensively on the stinger size.

aberegg05 · « **Reply #9 on:** April 07, 2014, 01:14:13 PM »

How can I flush my rad while its on my R and what temp should I start worrying?

Brett · « **Reply #10 on:** April 08, 2014, 10:45:53 PM »

I'd say you wouldn't want to hit more than 240-250 degrees. I got close to that one time on some slow trail riding/ lots of wheel spin in the winter and just started packing the radiator with snow while it was running to cool it down. Wasn't' the quads fault by any means, just wasn't paying attention the temp gauge. on my R with the Pro-X cylinder, inline cooler and my walsh rad I rarely get above 160-170 unless its ungodly hot out and I'm in first gear. as soon as I'm cruising along in second the temps go right down.

If you want to flush your rad on your R just figure out which way the coolant flow is and pull the hose off of the outlet side.

-Brett-