Help needed

t950cat · Post by **t950cat** » Sun Sep 27, 2009 7:18 pm

In need of advice...just had my subframe powdercoated and a new battery box made up(pix in My EK section) any ideas how to put the new battery tray which is powder coated onto the subframe which is power coated.I thought of drill holes in the tray and filling with weld but i would have to grind the coating of the subframe and am worried about rust when you grind the coating off.Someone said bolt it to the frame but i think yuk....Any ideas guys?????

ek61 · Post by **ek61** » Sun Sep 27, 2009 7:21 pm

if theres enough steel around the edge of the box could it be drilled and bolted in?

t950cat · Post by **t950cat** » Sun Sep 27, 2009 7:33 pm

.Thanks mate my neighbour said drill through the tray and stainless bolts into subframe.I guess thats the way i may have to go ek61.Thanks for your reply mate.

rosco · Post by **rosco** » Mon Sep 28, 2009 2:45 pm

Hi t950cat,
I was thinking along the same lines.... stainless - the fact that you have powdercoated the mating surfaces would probably prevent the issue of electrolosis between steel and stainless.... I would, however - suggest some sealing out of the exposed drilled holes......

You can grind the markings from the heads of stainless bolts, and rub them back on a flat stone - finally buff them up and you'll probably be pretty happy with the result....

I'd be very hesitant to suggest welding - it can go wrong - and the battery box area is a well known "high risk" rust area......

frats,
Rosco

V8EK4us · Post by **V8EK4us** » Mon Sep 28, 2009 4:49 pm

Hi Tony,
there is a product called "Panel Bond", BMW use this to put their cars together instead of welding

. We have used it in the marine industry to bond metals together and it stick like "cat shit to a blanket"..... actually is stick better! Would be worth considering but it is not cheap.

I would not weld it, bolting would be the best option if you use s/s countersunk metal threads and polish dome nuts.... the metal threads would obviously need to be cut to length.

Hope it helps

Sputzwagon · Post by **Sputzwagon** » Mon Sep 28, 2009 5:19 pm

I'd go the S/S bolts as well, but also I'd have a thin sheet of rubber between the subframe and battery box to stop both bits rubbing off the powdercoating.

Scotty.

Wag62 · Post by **Wag62** » Mon Sep 28, 2009 5:24 pm

Tony,
I used sikaflex to bond the battery box to the frame on my 65 chev as a tempary fix to get a road worthy fast.
8 years later and 70000 ks I sold the old girl but still didn't get around to fixing the battery box.
Maybe a cheaper solution to drilling?
Wag 62

t950cat · Post by **t950cat** » Mon Sep 28, 2009 5:36 pm

I knew i could count on you guys...i will go the s/s bolts with a chrome cap nut and i was going to put rubber between them.Thanx heaps guys its one part of the car ( Subframe) thats given me the most grief.
Cheers
Tony