Bottom Tapping

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Bottom Tapping

Postby MrHorsepower » Fri Jun 19, 2009 10:22 am

Hi all,
I am installing head studs and I was curious if you bottom tap all holes or just the 6 that go under the valve cover?
Thanks,
Bob
In Progress: '84 Chevy Silverado dually w/19.5 rims.
1st gen, New Eras, s300, 366, DennyT, piston LP, Pacbrake, 60lbs. springs, ARP studs, Snow Perf. stage II, '97 DR IC, 4" stacks.
NV4500, 14 Bolt Locker & Dana 60 Posi w/3.73's
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Postby Philip » Fri Jun 19, 2009 2:44 pm

Do all of theml.
93 W350 Club/cab w/duals, buckets & console, B&W flatbed, G56, 6 spd, 3:07 rears, gages, HX40/16, 4" exhaust, 6X.018 sticks, rear air ride suspension
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Postby SNOOT » Fri Jun 19, 2009 2:50 pm

What he said builds muscles... Have fun..
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Postby Philip » Fri Jun 19, 2009 4:14 pm

What he said builds muscles


A cordless drill on a low torque setting. Why build muscles. :lol:
93 W350 Club/cab w/duals, buckets & console, B&W flatbed, G56, 6 spd, 3:07 rears, gages, HX40/16, 4" exhaust, 6X.018 sticks, rear air ride suspension
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Postby PToombs » Fri Jun 19, 2009 5:44 pm

I try to bottom tap every hole I do. Doesn't always work out real well though. :D
pete

Just enough power to break everything behind the crankshaft.
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Postby jensenkennels » Fri Jun 19, 2009 7:57 pm

PToombs wrote:I try to bottom tap every hole I do. Doesn't always work out real well though. :D


Oooh......I see what you said there. :roll:
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Postby TWorline » Fri Jun 19, 2009 9:15 pm

Kinda sounds like you need a longer tap Pete. ;)
Tim Worline
1992 W250 Club Cab LE, S300 62/71, 5" stainless intake, 4" into 5" exhaust, ATS exhaust manifold, SDX 5X18 Injectors, AirDog 150, Borgeson shaft, Coolingmist Vari-cool, Con OFEK, 3" Stainless CoolerTubz, 354/749.

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Postby PToombs » Sat Jun 20, 2009 6:21 pm

That's what she said! :shock:
pete

Just enough power to break everything behind the crankshaft.
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Postby MrHorsepower » Sun Jun 21, 2009 6:30 pm

Thanks for the info guys, a little too much info from Pete...
so here is the next question. I bottom tapped the holes, but i had to loosen the studs back up, becuase the nut would not go onto every thread if you didn't. Next, my mills at school are down due to a shorted circuit. I did not mill the tops of the rocker pedistals. If I do not use the washer under the nut it will clear the valve cover, if I do it hits. So is it ok to use the studs without the washers on the pedistals until my $900 breaker comes in? Then I will mill the vavlecovers to clear the nut and washer, it just touches the webbing.
Any thoughts.

Thanks,
Bob
In Progress: '84 Chevy Silverado dually w/19.5 rims.
1st gen, New Eras, s300, 366, DennyT, piston LP, Pacbrake, 60lbs. springs, ARP studs, Snow Perf. stage II, '97 DR IC, 4" stacks.
NV4500, 14 Bolt Locker & Dana 60 Posi w/3.73's
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Postby TWorline » Sun Jun 21, 2009 8:05 pm

You could go in there with a die grinder and a round burr to take that webbing down or use a right angle if you have it.
Tim Worline
1992 W250 Club Cab LE, S300 62/71, 5" stainless intake, 4" into 5" exhaust, ATS exhaust manifold, SDX 5X18 Injectors, AirDog 150, Borgeson shaft, Coolingmist Vari-cool, Con OFEK, 3" Stainless CoolerTubz, 354/749.

http://www.CoolerTubz.com/
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Postby SNOOT » Sun Jun 21, 2009 9:14 pm

If it were me I would mill the rocker pedestals but thats me.. It makes things fit real nice..

Image
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Postby skilletky » Mon Jun 22, 2009 12:13 pm

how much metal do you need to mill off?
92 d350, arp's, orings, 150lb springs, 4200 gsk ,ground pin ,64/71/14 ,ddp inj's, ats manifold, tim's tubez, ats trans, FASS, locker, timing + a tooth, bcdd intake

2001 2wd rclb dually 5sp, smarty, Bluechip FMS, TS MVP, 57/75 twins, stainless diesel pipe kit, valair clutch, airdog 150, DFI SAC 7x.014's, cheap a$$ intake, ARP studs, oringed head, CPP 115# springs
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Postby mprmn08 » Mon Jun 22, 2009 3:46 pm

.200 deep by 1.1 wide as per arp instructions. i just got my new studs on thursday and am waiting for time to mill mine and resurface and fire ring the head.
93 w250 reg cab. rigged up stock downpipe to 4 inch to 5 inch exhaust from p.o. mild pump tweaks and all other stock for now. Project "smoke a little smoke". www.c-techperformance.com
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Postby SNOOT » Mon Jun 22, 2009 3:52 pm

If you send them to me I would be happy to mill them for FREE!! but you would have to pay for shipping...
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Postby soggy » Mon Jun 22, 2009 5:21 pm

Where would I find the tap needed to do this? And what thread size and pitch?
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