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Author Topic:   battery cables
dirtbuster
Member
posted November 17, 2004 09:22 AM
What size cable are most of you using in your cars. With our new car(modified) it seemed like a big struggle to turn the car over, and sometimes would barely start. Old car never ahd a problem. Then i thought about battery cables. Old car had 2guage and this car has 4guage. Wondering if that is just not enough cable to get juice to the starter. Only other change was from alky to gas, shich i thought would be easier to start.


marshalr
Member
posted November 17, 2004 10:25 AM
00 cable. I get the cables made at the local big rig repair shop. If the battery is in the rear not even 2 Ga. is gonna cut it. When the Engine gets hot, it takes more juice to get it turned over.
Use heavy duty switches that will take 50 amps or more.
Put a 10 ga. jumper wire on the chevy solenoid from the "S" terminal to the large battery cable connector.
Put a Ford solenoid away from the heat, up in the car or next to the battery.
Use a 1000 cranking amp battery with as much reserve time as you can get, unless you run an alternator then the reserve time is not so important. I've used the Duralast Gold Group 34 for many seasons.
Last thing is to check for voltage drop in your circuit. A perfect ground at the Negative battery cable. Stud welded to the cage works great. A strap type ground for the starter is good insurance especially if you use stock rubbery engine mounts.


akadirtracer7
Member
posted November 17, 2004 11:14 AM
It for sure won't hurt to run the bigger cable


dirtbuster
Member
posted November 17, 2004 11:18 AM
Thats pretty much the way we have it wired. Like i said the only difference was the cable size. Prob will change them over the winter.


jay116
Member
posted November 17, 2004 06:45 PM
Go buy the cable from the welding supply of your choice. Welder cable is many small strands and you loose less in power that way.
And price wise its not hard on the wallet.

------------------
Jason Boivin
http://www.rcracing-team.com


racer17j
Member
posted November 17, 2004 10:39 PM
if you are wired like they said with the ford soliniod setup you can get the motor turning then hit the power to the dist. that helps a ton but they are also right you need bigger cables and make sure you have a good ground from your block to the frame. forthe jumper wire i make plates out of s**** metal to make it .that way you won't have to worry about a wire melting or coming loose


dirtbuster
Member
posted November 18, 2004 07:25 AM
I know about spinning the motor over before hitting hte ignition but the problem is actually getting it turning over. Just seems to drag. I am almost certain now that its the cables.


49mtmod
Member
posted November 18, 2004 11:55 AM
Had the same problem this past season. Put a voltage meter on it and found that it was falling off quite a bit between the battery and solenoid. New bigger battery cables cured the problem.



Ego Racing
Member
posted November 18, 2004 12:54 PM
We had the same problem with our Late Model this season. 00 cable, jumper on the starter, braided ground cable on the engine, selonoid and all. The car was struggeling at times to turn over. After checking everything we could we found the selonoid was not making good contact at the base to ground it to the chassis. I placed a flat copper ground bar on the neg post to the base bolt with some corrosion inhibitor and have had NO problems.
Last year the same type of problem on another car was the cheap switches in the car. So be sure to check everything!


dirtbuster
Member
posted November 18, 2004 02:21 PM
ego,
do you mean the solenoid on the starter or your remote solenoid wasnt grounded?


Ego Racing
Member
posted November 18, 2004 07:50 PM
The remote. We had the type that are not internal and had a wire run to the base bolt. The three different types of metal caused oxidation to build up and it killed the connection.


BIGG C
Member
posted November 19, 2004 12:19 PM
If you make up your own cables how do you attatch the ends? We have always had trouble with the repair ends. BIGG C


autoshop
Member
posted November 19, 2004 01:19 PM
solder the end of the cable , using good solder into a crimp type battery lug.Then put some srink sleeve over the area, Red color for hot lead and Black for ground leads


KK17
Member
posted November 19, 2004 08:36 PM
I swithched over from 00 to 4 gauge this last season(saved about 8 lbs total) and didn't notice any difference in the way the car turned over(destroked 400 with 13:1 comp)...I do use a gear reduction starter but I didn't notice a difference from the 00's. a bad ground or a timing problem is a likely culprit. 4 gauge is plenty big enough to carry the amps to start most race car engines as long as everything is kosher.