Which hoses?
The kink in vacuum hose #4.
And yes Dave, a 45 lbs lighter weight battery does make a difference in the steering wheel - all things being equal.
Which hoses?
Just for reference, the OEM battery in 1991 5-speeds has part number 70D23L. I believe that lead-acid battery has a capacity of 70 Ah (amp-hours), can deliver that energy at a rate of 580 CCA (cold cranking amps), and it weighs a lot.
Saving weight sounds great and the price of lithium iron phosphate batteries is falling quickly. If you want a lithium iron phosphate battery another alternative to Shorai could be Aliant (see here: http://www.aliant-accu.nl/newsdocs/doc_8.pdf). Their 2.5 kg 600 CCA model X6 costs EUR 577 at my local race shop.
It would be nice to install a battery that can store a similar amount of energy as the stock battery so that it doesn’t die quicker between charges and that can deliver that energy as quickly as the stock battery so that the car starts up nice and fast. The lightweight batteries I’ve seen store a lot less than 70 Ah of energy, though, so they won’t last as long as OEM between charges.
phryxis,
Yes on both counts.
I'm running 235 ft and 285 rear.
since i have more rear traction from wider tires and a massive spoiler and rear diffuser I need all the help I can get in the front. Maybe another 2 full size batteries or AWD
Only 10 scammy? Strange as I've gone 2 full weeks now without death.
The kink in vacuum hose #4.
And yes Dave, a 45 lbs lighter weight battery does make a difference in the steering wheel - all things being equal.
I do keep the car on a float charger between uses
Thanks for the support guys
We are on the verge of a group buy for our battery trays.
Under 7 pounds mounted weight (that includes the battery), mounts with existing holes, no cutting/drilling necessary.
I'd agree with you if you said this a couple of years ago, but this new battery technology is really fantastic. It's Lithium Iron (not Ion), and has some pretty remarkable battery characteristics. Its CCAs are very good, 540 for this version, and can crank over a high compression BRZ motor, as we tested with RYU's car last week. Capacity is still very good, I've gone 10 days without any problems starting the car. Weekly starts are absolutely no problem. Still trying to find the upper limit of how long the car can sit while still being able to start it. I'll be embarking on cold weather testing (aka leaving the battery in the freezer) very soon as well.
And while I agree with you that you wouldn't be losing the weight in the most ideal area, it's still a very significant weight savings, close to 1% of the car. There's no other mod that gives you such a drop in weight from a single mod alone. To me, weight savings are weight savings, and weight savings are good
How much for the battery and mount?
Strange my stereo retains all presets, i agree with having the correct trickle charger for the battery concerned so it lasts longer that is one of the cool things about the Shorei it has a charger to matchI have a Braille Carbon series but do be warned with smaller batteries and only driving weekends you may go to start the car to find you have a flat battery which means the ecu resets i believe well at least the head unit for sure if it's aftermarket.
This isn't ideal so i changed it for a bigger Braille.
We are aiming for $380 for the package for the group buy. Keep in mind the MSRP of the battery is $350.
It would be great if you also included or could recommend exactly what charger to use too since its a specific dry cell charger. That way nobody plugs their regular battery tender in there.
I'm pretty interested in one.
Ah ok
So this battery tender jr would work then?
http://www.amazon.com/gp/aw/d/B000CITK8S/ref=mp_s_a_1_1?qid=1370527986&sr=8-1&pi=SL75