RB20DET CCA Optima - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

RBD240 · 08-30-2009, 04:30 PM

Looking at Optima batterys for my 240sx swapped with a rb20det, was wondering if anyone knows what the CCA are supposed to be for that engine. the lowest the have in yellow top is 450cca.

Thanks

projectRDM · 08-31-2009, 07:50 AM

Why do you want a lower rated battery? And why do you think swapping an engine matters to the size of the battery?

CCA = cold cranking amps. For any application you want a higher rated battery for more capacity and increased handling of electrical loads. If the battery will fit around IC piping or whatever you've done under the hood, go for at least 650CCA. You can get away with less, but why?

g6civcx · 08-31-2009, 09:50 AM

Get the biggest yellow top that fits.

sr240noob · 08-31-2009, 10:22 AM

autozone has 800cca and 100ca for 149.99 on optimas. i just bought one. amazing battery. I worked on the car for 3 hrs while listening to radio and the car fired perfictly after. no need to charge!

g6civcx · 08-31-2009, 10:26 AM

Quote:

Originally Posted by sr240noob

autozone has 800cca and 100ca

Does this sound crazy to anyone? CCA is usually lower than regular CA.

08-30-2009, 04:30 PM	#1
RBD240 Leaky Injector Join Date: Feb 2009 Location: Salem, Oregon Age: 37 Posts: 70 Trader Rating: (0) Feedback Score: 0 reviews	RB20DET CCA Optima Looking at Optima batterys for my 240sx swapped with a rb20det, was wondering if anyone knows what the CCA are supposed to be for that engine. the lowest the have in yellow top is 450cca. Thanks

08-31-2009, 07:50 AM	#2
projectRDM Post Whore! Join Date: Dec 2002 Location: Atlanta Age: 51 Posts: 13,812 Trader Rating: (12) Feedback Score: 12 reviews	Why do you want a lower rated battery? And why do you think swapping an engine matters to the size of the battery? CCA = cold cranking amps. For any application you want a higher rated battery for more capacity and increased handling of electrical loads. If the battery will fit around IC piping or whatever you've done under the hood, go for at least 650CCA. You can get away with less, but why? __________________ FORMERLY R240NA Learn what's really going on and protect your assets now before they're gone forever: www.paypalsucks.com

08-31-2009, 09:50 AM	#3
g6civcx Post Whore! Join Date: Apr 2004 Location: Virginia, USA Posts: 5,764 Trader Rating: (5) Feedback Score: 5 reviews	Get the biggest yellow top that fits.

08-31-2009, 10:22 AM	#4
sr240noob Leaky Injector Join Date: May 2009 Location: saint charles , Mo Age: 38 Posts: 76 Trader Rating: (0) Feedback Score: 0 reviews	autozone has 800cca and 100ca for 149.99 on optimas. i just bought one. amazing battery. I worked on the car for 3 hrs while listening to radio and the car fired perfictly after. no need to charge!