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Upgrading Radiator

horrace

By horrace,
in Four Door Family & Wagoneers

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horrace Rising Star

horrace

Posted
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Posted

/\/\

Yes they are the same and diret fit, can you elaborate on the options? as there are plenty around for R33's but i havent seen one for an auto yet with the built in cooler/warmer in the radiator.

KiwiRS4T Grand Master

KiwiRS4T

Posted
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Racing radiators won't make your car go faster. To elaborate i upgraded the radiator on the car i just wrote off. In the new S1 which i have rebuilt to the same specs I am still using the stock radiator and have done two track days with no sign of overheating. If i have to replace it I will go to a radiator repair shop and buy a slightly thicker one for about $200. I wont be going to the speed shop to buy a Japanese one for $900 or even $300.

GreenGhost Collaborator

GreenGhost

Posted
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i have a s2 and i am running a cooling pro r34 radiator i made my lines that go in to the radiator go to the second trans cooler but if u have upgraded ur stock one just loop the lines up that go into the radiator if u need any help i can explain it to u over the fone just ring me

myles 0432355971

horrace Rising Star

horrace

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Posted (edited)

thanks for letting me know it wont make my car go faster lol, i'm just worried about it overheating when i get a front mount in our hot Perth summers just a precausion really for pice of mind, i might just get mine flushed really well and see how it goes. I may try a radiator repair shop also like you said not a bad idea.

Edited by horrace
DaveB Mentor

DaveB

Posted
Posted
/\/\

Yes they are the same and diret fit, can you elaborate on the options? as there are plenty around for R33's but i havent seen one for an auto yet with the built in cooler/warmer in the radiator.

ah ok didn't realise there were no auto ones, but figures i guess.

DaveB Mentor

DaveB

Posted
Posted

Interesting, this line on an ebay page advertising a Koyo aluminium radiator for R33 GTR:

"Koyo aluminum racing radiators are made for manual transmission applications only, automatic transmissions will require an external transmission oil cooler"

So I wonder if the water exchanger is really necessary? I'll have a chance to ask an expert tomorrow, so I will do just that :D

DaveB Mentor

DaveB

Posted
Posted

/\

Yes that's pretty much what I was told too; if upgrading the radiator you have to run a complete bypass setup (big transmission cooler I think). This was not desirable to the expert I spoke to because it takes much longer to bring the transmission up to temperature without the radiator loop which is a heat exchanger that works between the transmission fluid and the radiator coolant. There was no mention of excess wear however; the transmission has a 'warmup' mode where it is privy to the coolant temperature, cold-run etc. and will change the shift mappings/lock out the lock-up solenoid (lol)/lock out the overdrive solenoid etc until it reaches operating temperature (about 60 degrees). This is what you normally notice at startup and for about 5 minutes of driving on a cold morning. Without the heat exchanger in the radiator this may last say 15 minutes or thereabouts. So no 4th gear or overdrive and a sluggish transmission for 15 minutes every start.

horrace Rising Star

horrace

Posted
  • Author
Posted (edited)

yeah that would be hell gay waiting 15 minutes for overdrive since im on the freeway in 2 mins then its 25 mins to work lol. I think im just gonna rip mine out and get it a good flush ey, i was also wondering if something like a R34 auto radiator would be any thicker and direct fit? something to think about.

BTW since i put in my bigger davies craig cooler it definately takes longer to get overdrive, just something i noticed from the extra cooling.

Edited by horrace

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