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Drilling leaf springs

Tech Talk for Suzuki owners.

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Drilling leaf springs

Post by built4thrashing »

ive discovered that i have bent a front spring somehow (RUF) and will be making a new set for the RUF. Now i want to incorporate a military wrap 2nd spring but will need to drill a new locating hole in it to match the rear leaf spacing.

What drill bits will i need to drill through the hardened leaf?

Thanx
B4T
1999 SQ625 Manual Grand Vitara. Lifted, Twin Locked, 31' Extremes, dual Batteries, Winch.
Lots of custom gear as I cant afford the proper stuff.
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Post by zooki »

drilled heaps with a normall sutton HSS bit, plenty of lube and a $99 drill press on its slowest speed
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Post by Dozoor »

As Zooki Said .

Remember in this case SPEED is your enemy Speed = Heat heat stuffs the drill bit .
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Post by moose »

wat they siad !!

find some-one witha drill press !!!
A LOT easier !!! :D
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Post by Goatse.AJ »

Just a question on drilling leaf springs.

I've had people swear blind that you should never do it, but obviously a few people have with no apparent ill effects. Can anybody provide a definitive answer on this?
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Post by moose »

i,ve had all 4 main leaves drilled (front & rear)
have not had any probs yet !!
ie....no cracks or bends !!! :D
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Post by Goatse.AJ »

Cool, thanks Moose. Gives me a few more options for rear suspension mods then :armsup: :armsup:
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Post by Guy »

Keep the bit lubed up as well .. I have found that ATF works quite well as a cuttling lubricant (was put onto it by a machine shop)
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Post by redzook »

dunno if you want to try it but i have heard of a masonry drill bit being used
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Post by fool_injected »

The oldman, he's a toolmaker, siad to use masonary drill (cardide tip) for a pilot hole the open it up with standard drills
Slow speed and plenty of lube as state earlier

He said it sounds dodgey but it works and its cheaper than buying 'special drill bits'
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Post by built4thrashing »

how slow is slow?
500rpm?
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Post by striker99 »

built4thrashing wrote:how slow is slow?
500rpm?
Yeah about that wouldnt do anything over 800 proberly needs to be lower than 800 mind you
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