RX7Club.com - Mazda RX7 Forum
Page 2 of 2
1
2
Show 50 post(s) from this thread on one page

RX7Club.com - Mazda RX7 Forum (https://www.rx7club.com/)
-   3rd Generation Specific (1993-2002) (https://www.rx7club.com/3rd-generation-specific-1993-2002-16/)
-   -   Battery suggestion and IC Option (https://www.rx7club.com/3rd-generation-specific-1993-2002-16/battery-suggestion-ic-option-475504/)

rynberg 10-24-05 08:03 PM
Originally Posted by superfastrx7
Rynberg, you got a good point. I have not performed the fan mods to my car yet but it is somthing I will be doing soon. Can this yellow top battery hold enough charge after running the radiator fans for 10 minutes? Even say on a cold day.... here in SC anyways cold days are no lower than 30 degrees.
I have been running my Costco 51R battery for 2-1/2 years or so...through several track events with leaving the fans running for several minutes after shutdown. Not to mention doing that occasionally after street driving. Never had a problem with the battery at all. Theoretically, the expensive Optima 51R should be even better at that.

Obviously, there are limits but I've yet to exceed them with this battery. Although, I don't know why you would feel the need to run the fans, especially for 10 minutes, on a cold day! I've never done the fan mod. I have the PFC, with the fans set to turn on at 89C. Who needs a fan mod? :)

superfastrx7 10-24-05 08:10 PM
Thanks again, I've decided to skip the fan mods and buy a PFC (I was thinking about it).... then down the road will buy the intercooler. Buying the battery tomorrrow. Good point about running the fan mod in the winter... not sure what I was thinking.

SRA-FD3S 10-24-05 09:14 PM
Re Mini Battery Kit 250.00 I Got It And Its Perfect Help's The Rad Fans Blow Out The Hot Air Aswell

desmond 10-25-05 12:49 PM
Originally Posted by rynberg
Guys wanting to run ASP/Pettit/M2 Large SMICs, you cannot run a 51R battery. You CAN squeeze in a PC680 battery. A PC680 doesn't have a whole lot of extra juice though...

I strongly recommend to anyone running a Medium or smaller SMIC to get one of Jeff's battery trays (or make your own) and run a 51R. It saves a little over 10 lbs and has plenty of juice to start the car, run the fans after shutdown, etc. Much cheaper than a PC680 too, at least if you just stick with a maintenance-free battery like my 7-year Costco brand battery.

can jeff's tray be used in conjuction with relocating the battery to one of the bins?

and can any generic 51R battery be used? i know optima sells one but ive seen posts where people get them for sears or costco. same size but maybe the optima lasts longer

Julian 11-03-05 08:21 AM
Originally Posted by superfastrx7
Julian, That it's a pretty awesome ducting to from your IC to I what I believe is the same area the old/stock IC used (for intake air or did you also modified that area to increase airflow?). r u using stock twins? I will also look into your IC since you have the same type radiator and the AST from Pettit.

It is also good to know the battery will hold charge for a few weeks.
The ducting fits in the same spot as stock. I have a fluidyne radiator so gap is a little less to work with, but trout is still bigger than stock as I used all of the available area. Front opening is larger in cross section and extends down a little more that stock .. in general whole flow cross section is larger than stock not just fit up to SMIC. Stock intake box modified to take air in from bottom, started with Adam's cheap bastard kit and sealed and modified some more.

Julian 11-03-05 12:42 PM
If you go the 51R Optima yellow top route, check out pricing at AJ-USA

http://www.ajusa.com/cgi-bin/optima/...d8d28529341c30

superfastrx7 11-03-05 12:50 PM
Threre mmust be high demand for them 51R. Three places I've checked out of stock.


All times are GMT -5. The time now is 12:41 PM.
Page 2 of 2
1
2
Show 50 post(s) from this thread on one page


© 2024 MH Sub I, LLC dba Internet Brands