RobPhoboS Posted December 17, 2018 Posted December 17, 2018 I need to drill a nice big'ole in these (a pity yes) - but I'm wondering will a standard centre punch do the job ? (got a recommended one if so ?) The 'automatic' one didn't even scratch it. Quote
rabbitstew Posted December 17, 2018 Posted December 17, 2018 Should be able to use a normal centre punch and punch a small dent in it, then drill through it with a suitable sized drill bit. Might be hard to clamp it in a vice though without it getting squished! Quote
RobPhoboS Posted December 17, 2018 Author Posted December 17, 2018 Just now, rabbitstew said: Should be able to use a normal centre punch and punch a small dent in it, then drill through it with a suitable sized drill bit. Might be hard to clamp it in a vice though without it getting squished! I'll go an grab a normal centre punch today, hopefully it'll work. I've got a weighty mallet to whack it with If the vice can't hold it properly, I thought perhaps my locking pliers might do the trick on the floor (with some wood underneath so the drill bit doesn't hit the floor). Thank you Quote
rabbitstew Posted December 17, 2018 Posted December 17, 2018 Have to watch it doesnt start spinning around with the drill bit & do you an injury! 1 Quote
ZMANALEX Posted December 17, 2018 Posted December 17, 2018 Drilling will also be a major problem for you as standard HSS drill bits will not look at these buckets. You will require Cobalt (HSCO) or Carbide (CARB) Might be a plan to send this small drilling job to your local engineering firm. 1 Quote
RobPhoboS Posted December 17, 2018 Author Posted December 17, 2018 (edited) I appreciate the advice ! I bought quite a heavy duty centre punch (8mm 120g), I'm hopeful it'll do the trick. If not, I've asked the guy that did my seat as he has a pillar drill. Unfortunately he's always busy AF, so I'm not sure he'll get the time to do it (as I need it by next week ideally). And of course this time of year is quite difficult. Edited December 17, 2018 by RobPhoboS Quote
Mark@Abbey m/s Posted December 17, 2018 Posted December 17, 2018 I doubt your mark it with a centre punch, maybe using a grinder (stone tipped) and work through the hardness then you maybe able to drill it, but it is hardened on the under-side as well. Why are you trying to drill a hole through a 350Z tappet bucket? Quote
RobPhoboS Posted December 17, 2018 Author Posted December 17, 2018 6 minutes ago, Mark@Abbey m/s said: I doubt your mark it with a centre punch, maybe using a grinder (stone tipped) and work through the hardness then you maybe able to drill it, but it is hardened on the under-side as well. Why are you trying to drill a hole through a 350Z tappet bucket? Hey Mark, long time no see ! It's to use with the JWT tool, I have one pre-drilled but the other 3 that the seller included aren't (it's a pity to do it!). Granted, it's not like I'll be in a rush but will save a bit of messing around. Quote
Mark@Abbey m/s Posted December 17, 2018 Posted December 17, 2018 oil usages issues. I would put a fiver on it being piston rings not valve stem seals Quote
RobPhoboS Posted December 17, 2018 Author Posted December 17, 2018 3 minutes ago, Mark@Abbey m/s said: oil usages issues. I would put a fiver on it being piston rings not valve stem seals Probably a combination but doing this part anyway, too late now I have a separate thread for it, so will of course show my findings (doing timing chain and other bits and pieces). Quote
RobPhoboS Posted December 20, 2018 Author Posted December 20, 2018 The new centre punch I got yesterday (an 8mm one) seemed to make an impact. So I'm slightly hopeful now, will try on the weekend to drill them. Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.