tapping ex. manifold for EGT

barracuda_440 · 06-09-2008, 03:05 PM

Any suggestions? I got my gauges wired up and everything, now its time to tap that manifold for the Egt and finally turn up the pump and slide that plate forward!

__________________
98' 3/4 ton, S&B CAI, CFM+, BD Plate, 6in mitres, HTS trans,17*timing, FTE 435s DiPricol gauges
Thanks Wally at FTE for my mods!

fishfry82 · 06-09-2008, 03:29 PM

Take your time, Try not to tap to fast (AKA back it out every half turn or so) Dont use Grease but use some PB blaster on your tap, That will also make things easier.

When drilling your manifold, use a fine point punch to get a pilot started. Then use your 23/64 (if your using a 1/8NPT Therm. Coup.), Drill slow, Dont try to force to hard on it!
Try to use a high quality bit , I use alot of Dewalt bits that have a nice point on the end for starting! As you get closer to punching through take it very slow to avoid binding your bit. Make sure your hole is straight by keeping the drill as straight as possible! Also use some PB on the bit as you drill!

Once drilled you've got a few options, Start it with the hole open to blow shavings out... Now before anyone disagrees lets keep in mind that 90% of the drill shavings exited via the bit. Your tap dust is so fine that it really wont cause any problems!

If your worried, Just take a shop vac and put over the hole!

Remember that this is NOT a hard process, Just relax and take your time, Once you get the feeling of the tap , you'll be much better!

If you need help anyone here can help!

barracuda_440 · 06-09-2008, 05:14 PM

thanks fish fry i really appreciate you walking me through it. Im going to go get my bits and tap tonight and maybe have at it tommarow night or so. With the stock trans and 125k miles would it be ok to turn up my pump and slide my plate forward for alittle extra power?

__________________
98' 3/4 ton, S&B CAI, CFM+, BD Plate, 6in mitres, HTS trans,17*timing, FTE 435s DiPricol gauges
Thanks Wally at FTE for my mods!

***unixcowboy*** · 06-10-2008, 08:52 AM

Quick link

Gauge Install

2nd on taking your time. that's the key.

__________________
'93 D250 CC auto, 18.5cm w/30 psi - 32 psi w/TC locked, 366 spring w/1 turn clipped, power screw bottomed - backed off 1 turn, modified Ol Smokey's power pin, smoke screw fully out, hat modified to get pin higher - still smokes, '94 trans w/clutches and some hard parts, 4510 w/4 1/2" intake and heat shield, grid htrs mia, 4" dp into 5" pipe to single 5" stack, 285's rear 265's front

barracuda_440 · 06-10-2008, 12:42 PM

The gauges i got are the Dipricol, with the danin wiring harness, i got the 1/8th NPT tap, but im am not 100% sure what bit to use. I dont plan on taking the turbo or manifold off.

__________________
98' 3/4 ton, S&B CAI, CFM+, BD Plate, 6in mitres, HTS trans,17*timing, FTE 435s DiPricol gauges
Thanks Wally at FTE for my mods!

***BBRam*** · 06-10-2008, 12:50 PM

I use a Letter R drill.

__________________
03-3500, DRW, QC, 4x4, DTT Trans, Mag-Hytec, R700 BD Twins, BD IC Boots, BD Billet Flexplate, Lockup Switch, SMARTY TNT-R BETA/TS MP-8, Eliminator Fuel System, Floor It Stage 3 CP3 & Rail Cap, BIG Stix's by FTE, ARP Head Stud's, Springs, Fluidampr, ATS ARC-FLOW, AFE, Boost, Drive Pressure, Pyro, Fuel Pressure, Tran's Temp, Rail Pressure Gauge, GDP Ladder Bars, GrandRock 7" Miters. Old #'s (R/T .021, 60' 1.76, 1/4 ET 13.14 @ 100.45 mph)

barracuda_440 · 06-11-2008, 06:36 PM

Where can i get a Letter R drill bit? they dont have them at murrays, or ace hardware....

__________________
98' 3/4 ton, S&B CAI, CFM+, BD Plate, 6in mitres, HTS trans,17*timing, FTE 435s DiPricol gauges
Thanks Wally at FTE for my mods!

gododge99 · 06-11-2008, 06:41 PM

i would suggest taking off the manifold to drill it then blow it out with an airhose so you dont get chuncks of metal in your turbo

__________________
99 extendedcab longbed,edge comp nv4500,banks big brake,banks impellar,banks bighead wastegate,bd manifold smoke switch,8 inch stack, airdog 150 thanks to wally/ftediesel www.myspace.com/smokindiesel99

fishfry82 · 06-11-2008, 06:42 PM

Letter R bits can be hard to find, But I assure you a 23/64 Will work just fine! Really only (IRC) about .5 MM diffrence.

I would refrain from turning any fuel to your truck unless your planning on a new transmission. You'll get much more life out of your stocker if you leave it be!

***unixcowboy*** · 06-11-2008, 08:35 PM

Quote:

Originally Posted by barracuda_440

Where can i get a Letter R drill bit? they dont have them at murrays, or ace hardware....

I found mine at a pawn shop...

__________________
'93 D250 CC auto, 18.5cm w/30 psi - 32 psi w/TC locked, 366 spring w/1 turn clipped, power screw bottomed - backed off 1 turn, modified Ol Smokey's power pin, smoke screw fully out, hat modified to get pin higher - still smokes, '94 trans w/clutches and some hard parts, 4510 w/4 1/2" intake and heat shield, grid htrs mia, 4" dp into 5" pipe to single 5" stack, 285's rear 265's front

***BBRam*** · 06-12-2008, 10:35 AM

Letter drills are very common in the machining industry.

Letter R drill, .339

23/64 drill, .3594

__________________
03-3500, DRW, QC, 4x4, DTT Trans, Mag-Hytec, R700 BD Twins, BD IC Boots, BD Billet Flexplate, Lockup Switch, SMARTY TNT-R BETA/TS MP-8, Eliminator Fuel System, Floor It Stage 3 CP3 & Rail Cap, BIG Stix's by FTE, ARP Head Stud's, Springs, Fluidampr, ATS ARC-FLOW, AFE, Boost, Drive Pressure, Pyro, Fuel Pressure, Tran's Temp, Rail Pressure Gauge, GDP Ladder Bars, GrandRock 7" Miters. Old #'s (R/T .021, 60' 1.76, 1/4 ET 13.14 @ 100.45 mph)

**ward.racing** · 06-12-2008, 10:39 AM

i put axle grease or vasoline on my taps and bits when i drill them. then use a shop vac to get the remaining shavings out. then start the truck and last install the tap.

__________________
2001 2500 4wd., FARMBOYS DIESEL, Smarty, Engineered Diesel, source automotive, Industrial Injection, Nx2, Flexalite, Hellman Performance, Lazaar Smith.

06-09-2008, 03:05 PM	#1 (permalink)
barracuda_440 Cummins Nut Join Date: Aug 2007 Location: Clarkston Mi Posts: 425 barracuda_440's Truck Pics	tapping ex. manifold for EGT Any suggestions? I got my gauges wired up and everything, now its time to tap that manifold for the Egt and finally turn up the pump and slide that plate forward! __________________ 98' 3/4 ton, S&B CAI, CFM+, BD Plate, 6in mitres, HTS trans,17*timing, FTE 435s DiPricol gauges Thanks Wally at FTE for my mods!

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06-09-2008, 03:29 PM	#2 (permalink)
fishfry82 Cummins Fan Join Date: Nov 2007 Posts: 60 fishfry82's Truck Pics	Take your time, Try not to tap to fast (AKA back it out every half turn or so) Dont use Grease but use some PB blaster on your tap, That will also make things easier. When drilling your manifold, use a fine point punch to get a pilot started. Then use your 23/64 (if your using a 1/8NPT Therm. Coup.), Drill slow, Dont try to force to hard on it! Try to use a high quality bit , I use alot of Dewalt bits that have a nice point on the end for starting! As you get closer to punching through take it very slow to avoid binding your bit. Make sure your hole is straight by keeping the drill as straight as possible! Also use some PB on the bit as you drill! Once drilled you've got a few options, Start it with the hole open to blow shavings out... Now before anyone disagrees lets keep in mind that 90% of the drill shavings exited via the bit. Your tap dust is so fine that it really wont cause any problems! If your worried, Just take a shop vac and put over the hole! Remember that this is NOT a hard process, Just relax and take your time, Once you get the feeling of the tap , you'll be much better! If you need help anyone here can help!

06-09-2008, 05:14 PM	#3 (permalink)
barracuda_440 Cummins Nut Join Date: Aug 2007 Location: Clarkston Mi Posts: 425 barracuda_440's Truck Pics	thanks fish fry i really appreciate you walking me through it. Im going to go get my bits and tap tonight and maybe have at it tommarow night or so. With the stock trans and 125k miles would it be ok to turn up my pump and slide my plate forward for alittle extra power? __________________ 98' 3/4 ton, S&B CAI, CFM+, BD Plate, 6in mitres, HTS trans,17*timing, FTE 435s DiPricol gauges Thanks Wally at FTE for my mods!

06-10-2008, 08:52 AM	#4 (permalink)
*unixcowboy* Diesel Freak Join Date: Apr 2007 Location: Lansing, Mi Posts: 675 unixcowboy's Truck Pics	Quick link Gauge Install 2nd on taking your time. that's the key. __________________ '93 D250 CC auto, 18.5cm w/30 psi - 32 psi w/TC locked, 366 spring w/1 turn clipped, power screw bottomed - backed off 1 turn, modified Ol Smokey's power pin, smoke screw fully out, hat modified to get pin higher - still smokes, '94 trans w/clutches and some hard parts, 4510 w/4 1/2" intake and heat shield, grid htrs mia, 4" dp into 5" pipe to single 5" stack, 285's rear 265's front

06-10-2008, 12:42 PM	#5 (permalink)
barracuda_440 Cummins Nut Join Date: Aug 2007 Location: Clarkston Mi Posts: 425 barracuda_440's Truck Pics	The gauges i got are the Dipricol, with the danin wiring harness, i got the 1/8th NPT tap, but im am not 100% sure what bit to use. I dont plan on taking the turbo or manifold off. __________________ 98' 3/4 ton, S&B CAI, CFM+, BD Plate, 6in mitres, HTS trans,17*timing, FTE 435s DiPricol gauges Thanks Wally at FTE for my mods!

06-10-2008, 12:50 PM	#6 (permalink)
*BBRam* Just Hangin Around Join Date: Jan 2006 Location: Chelsea MI Posts: 16,519 BBRam's Truck Pics	I use a Letter R drill. __________________ 03-3500, DRW, QC, 4x4, DTT Trans, Mag-Hytec, R700 BD Twins, BD IC Boots, BD Billet Flexplate, Lockup Switch, SMARTY TNT-R BETA/TS MP-8, Eliminator Fuel System, Floor It Stage 3 CP3 & Rail Cap, BIG Stix's by FTE, ARP Head Stud's, Springs, Fluidampr, ATS ARC-FLOW, AFE, Boost, Drive Pressure, Pyro, Fuel Pressure, Tran's Temp, Rail Pressure Gauge, GDP Ladder Bars, GrandRock 7" Miters. Old #'s (R/T .021, 60' 1.76, 1/4 ET 13.14 @ 100.45 mph)

06-11-2008, 06:36 PM	#7 (permalink)
barracuda_440 Cummins Nut Join Date: Aug 2007 Location: Clarkston Mi Posts: 425 barracuda_440's Truck Pics	Where can i get a Letter R drill bit? they dont have them at murrays, or ace hardware.... __________________ 98' 3/4 ton, S&B CAI, CFM+, BD Plate, 6in mitres, HTS trans,17*timing, FTE 435s DiPricol gauges Thanks Wally at FTE for my mods!

06-11-2008, 06:41 PM	#8 (permalink)
gododge99 Cummins Nut Join Date: Mar 2008 Location: windsor ca Posts: 474 gododge99's Truck Pics	i would suggest taking off the manifold to drill it then blow it out with an airhose so you dont get chuncks of metal in your turbo __________________ 99 extendedcab longbed,edge comp nv4500,banks big brake,banks impellar,banks bighead wastegate,bd manifold smoke switch,8 inch stack, airdog 150 thanks to wally/ftediesel www.myspace.com/smokindiesel99

06-11-2008, 06:42 PM	#9 (permalink)
fishfry82 Cummins Fan Join Date: Nov 2007 Posts: 60 fishfry82's Truck Pics	Letter R bits can be hard to find, But I assure you a 23/64 Will work just fine! Really only (IRC) about .5 MM diffrence. I would refrain from turning any fuel to your truck unless your planning on a new transmission. You'll get much more life out of your stocker if you leave it be!

06-12-2008, 10:35 AM	#11 (permalink)
*BBRam* Just Hangin Around Join Date: Jan 2006 Location: Chelsea MI Posts: 16,519 BBRam's Truck Pics	Letter drills are very common in the machining industry. Letter R drill, .339 23/64 drill, .3594 __________________ 03-3500, DRW, QC, 4x4, DTT Trans, Mag-Hytec, R700 BD Twins, BD IC Boots, BD Billet Flexplate, Lockup Switch, SMARTY TNT-R BETA/TS MP-8, Eliminator Fuel System, Floor It Stage 3 CP3 & Rail Cap, BIG Stix's by FTE, ARP Head Stud's, Springs, Fluidampr, ATS ARC-FLOW, AFE, Boost, Drive Pressure, Pyro, Fuel Pressure, Tran's Temp, Rail Pressure Gauge, GDP Ladder Bars, GrandRock 7" Miters. Old #'s (R/T .021, 60' 1.76, 1/4 ET 13.14 @ 100.45 mph)

06-12-2008, 10:39 AM	#12 (permalink)
ward.racing Oklahoma Chapter Prez. Join Date: Jul 2007 Location: Wilburton Ok Posts: 899 ward.racing's Truck Pics	i put axle grease or vasoline on my taps and bits when i drill them. then use a shop vac to get the remaining shavings out. then start the truck and last install the tap. __________________ 2001 2500 4wd., FARMBOYS DIESEL, Smarty, Engineered Diesel, source automotive, Industrial Injection, Nx2, Flexalite, Hellman Performance, Lazaar Smith.