Ok i am going to install my gauges on saturday and i need to make sure i do this right

the only thing that i have to drill and tap on this install is the pyrometer into the manifold pre turbo (the boost gauge was given with a boost bolt)

i was wondering what i should do for this i have heard two different ways

1. disconnect the turbo and put a rag inbetween the two so no shavings get in it and drill from a pilot hole slowly up one size until i get to the R drill bit, vaccuming near the drill bit and tap as i go with no grease on the tap

2. leaving the engine on and drill a pilot hole then a size R hole and grease the bit and tap while the exhaust blows the chips outward

what have yall done??

id rather not mess with the turbo butttt at the same time id rather not mess it up -

06MegaCab's Sig:

06 2500 Dodge Mega Cab-Alpine DVD Player, Audiobahn 2500w Amp, 2 1000w 10s, 35" Mud Grapplers, 2" Leveling Kit, Straight Through 4" exhaust, Bully Dog Triple Dog Downloader.....Soon to Come: CFM + Intake Manifold, ICEBOX cold air, Snow water/meth kit, ATS Torque Converter, ATS Racing Valve Body, ATS Billet Flexplate,

well i drilled mine then got a magnetic retrieval tool and put down in the hole and just starting picking up the shavings with the magnet just keep going till it gets as much out as possible, then i run the tap and did the same thing with the magnet, then once you get most of it out start up and the rest if any is left should just blow out...did this on mine and my brothers 02 and havent had any problems


The right way is to take the turbo off and do the rag thing but that is PITA so this works and is alot easier..ive been running mine for about 10,000 miles with no problems after doing this and my brother has about 3,000 on his so you should be good to go -

stkdram55's Sig:

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I just used some thick grease and kept it on the drill bit and reaaplied as needed to catch shavings. There really won't be that many shavings that get into the manifold until its time to tap then use grease again just thread a lil and take it out and wipe it off and do it again till done. It won't hurt the back side of the turbo if a lil piece falls into it. -

RamNu2's Sig:

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I just let teh truck run. Done this on 5 or so trucks. No problems except your hands get REAL hot -

RSWORDS's Sig:

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I have drilled many pyro holes..............I get a hammer and punch to make a divet then start the truck and let it idle......................never a problem -

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Don't know if it was from the grease, but when my stock turbo failed, I notices the turbine fins were heavily damaged. Some were missing, some were chipped. -

wildbill's Sig:

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I heard the grease prevents the shavings from being 'ejected'. Drill bits were designed to channel the shavings out grease prevents that.....*shrugs*


I started small - real small, and slowly increased in size, had the vacuum running the whole time.........eitherway - good luck! -

I just left mine running, no problem at all. -

AlCorr's Sig:

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I use a punch to make sure the bit doesnt travel. then grease the drill bit and tap to catch some of the shavings. then ill prob around with a magnet. never a problem here either, 5 under my belt -

SmokinRAM114's Sig:

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hmmm. if i were you id un-do the turbo like you said, and put a rag there. then drill the hole with a vacuum to suck up the loose bits. then do w/e else. ive worked at a car shop and heard the horror stories of people doing this pre-turbo, but without collecting the shavings. you dont want to waste your money on a new turbo when all this takes is a little time...

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good god!!!! you sure a bolt didnt get lodged in there!?!?!?! -

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