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View Full Version : How to get 2.4 200 ported to run warmer?



WATERWINGS
01-13-2003, 10:18 AM
I am running a 2.4 200 thats been ported/exhaust chest, tight heads, and at this time of year (water temp is 43) I can barely get the head temp guages to touch the 120 mark, do I need to run thermostats this time of year?

MTCM
01-13-2003, 11:15 AM
If your cooling system is stock (no mods), you should be running T-stats. Your head temps should be 150 to 180 degrees (maximum) and your water temp no more than 140 degrees. I would be afraid of "cold seizing" that engine. What is your maximum RPM you run with that engine?

WATERWINGS
01-13-2003, 12:20 PM
...But this time of year, and after I have heard of cold seizing, from other members, I've kept the R's down below 6000 mainly and fed power on slowly and let off slowly, just in case.(went out this weekend)

I had a problem at the first of the season with it running to hot. I've been through so many setups and run several different lower units this year, so its hard to remember.

I think when I gaulded a piston, the rubber grommet in the top of the water pump was missing and causing not enough water pressure.

I've noticed.... with a bobs cone tons of water pressure, 25-30#'s, with two holed CLE and the unknown two holed nose cone I,m running now 15 to mabey 20 #'s @ 6800 or so.

No poppet, two diverters per side, two piece exhaust plate, and to get water pressure up I've run two dump hoses into one, (worth about 5#'s) With a new poppet installed, it ran way hot twenty seconds after on plane. (also with the old one it did the same thing)

WATERWINGS
01-14-2003, 12:20 PM
Calling all Gurus!

WATERWINGS
01-14-2003, 03:12 PM
I'm sure the cold water has alot to do with it, but this summer I was only running at around 125 degrees

Talon2.5
01-15-2003, 01:26 PM
if it were mine i would try small holed restrictor washers where the thermostats go, or high temp thermostats themselves

WATERWINGS
01-15-2003, 03:07 PM
The holes in the washers I am running now are 1/8, is it safe to go smaller?

I guess it would be, the thermostats would be competely closed if the temp was too cool, and only open when the temp climbs??

Hey Skip how do I time it so I can be your 5000th post?

Guess I need to get out the slide rule and brush up on my algebra?

Would trigonometry be involved?

Talon2.5
01-16-2003, 12:05 AM
hehehe 5000 is still quite a ways off ;)

try the thermostats first but something ive done in the past for a test of a smaller opening is to pop rivet that 1/8 hole ya got then knock the pin totally out of the center of the rivet leaving that small of a hole ;)