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89 TII running slightly hot

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Old 04-12-05, 12:23 AM
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just dont care.

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89 TII running slightly hot

when i sit and let my car idle for 10-15 minutes fully warmed up, the coolant temp sits at about 185*F or so... when i am cruising at about 75 on a hot day, the coolant temp sits around 200 and even gets up to 205*F....... i have a greddy FMIC and no underbelly tray and i was attributing part of my troubles to this, but i was wondering what everyone else's coolant temps were like with big FMIC's. and does an underbelly tray help that much?
Old 04-12-05, 12:42 AM
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Yes the tray makes an enormous difference. With all the stock ducting in place and stock clutch fan and shroud my temp has only gotten up to 87*C (188*F) while running hard. Normally it sits at 82*C (180*F) . I have a koyo also and none of the stock foam on the radiator or brackets. The hottest I have seen my temp gauge is 91*C (196*F) but that is after my car is turned off for a few minutes and the water isnt being circulated anymore.

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Old 04-12-05, 01:51 AM
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hmmmm how much do the underbelly trays cost straight from mazda?
Old 04-12-05, 01:57 AM
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Get one from someone on the forum. I'm sure someone will hook you up for cheap. I just put two in the trash from a few parts cars...
Old 04-12-05, 02:15 AM
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i actually just trashed an old one thats been sitting in the garage last week. i hadnt had an rx7 with a big fmic yet and didnt think it made that much of a difference on the highway... i guess i was wrong, anybody wanna hook jake up with a underbelly pan?

what happened to that dude that was making the aluminum ones?
Old 04-12-05, 02:19 AM
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Make one out of thin aluminum, like that higgi thread.
Old 04-12-05, 04:26 AM
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205?

Ooohh.. SCARY!
Old 04-12-05, 12:39 PM
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the haltech is reading off the stock mazda coolant temp sensor, so who knows how far off it is (reads 5-10 degrees high i have heard) but it still never got this hot on my 91.
Old 04-12-05, 12:39 PM
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Originally Posted by J-Rat
205?

Ooohh.. SCARY!
Damn right. I get worried when it starts to get close to 190
Old 04-12-05, 01:42 PM
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On my car with the Greddy VSPL, stock radiator, stock fan, Rmagic panel and under belly pan my car would run fine around town (88C) but as soon as I got on the interestate it would shoot WAY up to 94 - 96C. Koyo radiator with a stock fan fixed the problem.

Daniel
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