Mykk's BMW V8 T-bucket, version 1.5:

[Buffman]

I found small lightweight AGM batteries on line to use in my 944 SCCA race car. A little bigger than a lawn mower battery but a lot more power. Didn't have any problems with it.

 

[rbsWELDER]

I wanted to see if an inexpensive 12v lawn & garden battery with 350cca would suffice to crank over this engine. Not only for the cost of the smaller battery but also the space saving. You can see I'm experimenting with the wrong size battery mount for it and I'm not completely sold yet.



As a test I hooked the lawn & garden battery up to the current Tbucket via jumper cables. It did crank and fire up the engine, but it was a slow cranking. In the long run the small battery might work because I was really putting it in the worst case scenario.

I use a Harley Davidson battery to start my 350 Chevy engine. No problems!