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#7057421 - 05/08/13 12:29 PM Honda SI radiator
Bill Seifert Offline

Registered: 05/11/08
Posts: 10
I race a 99 Civic SI in SCCA road racing. When the outside temp is 90 or higher the car runs a little hot. I can usually finish the race if I turn my heater on full blast, but that's kinda miserable.

I know I can get an aftermarket radiator, but thats kinda expensive. Does anyone know if an Acura GSR, 2001 radiator will swap? I know a B18 motor will swap with my B16, so one would think the radiators will interchange. The inlet and outlet hoses are slightly different, but I could probably get around that. Any help would be appreciated.

Bill Seifert


#7057941 - 05/08/13 04:18 PM Re: Honda SI radiator [Re: Bill Seifert]
4doorEG Moderator Offline
Post Master Sr

Registered: 11/23/01
Posts: 6098
Loc: Overland Park, KS
No a GSR radiator is not a direct fit. You'd have to get rid of the AC condenser for it to fit.

GSR is full length radiator and a civic is a half sized radiator.
94 Civic Hatch
9.85 @ 155 mph

#7315648 - 10/01/13 06:34 PM Re: Honda SI radiator [Re: 4doorEG]
themachine2 Offline

Registered: 10/01/13
Posts: 28
cooling is very important.
#7394515 - 11/16/13 05:19 AM Re: Honda SI radiator [Re: themachine2]
aleezysam Offline

Registered: 11/15/13
Posts: 1
I have a 2000 si and it is running very rough. I replaced the plugs, wires, and cap with no luck. I also swapped out injectors with no change. I can start the car and remove each wire and only one cylinder does not make the engine struggle. I need help badly!!!!
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