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Old 01-12-2013, 06:06 PM   #1 (permalink)
JSarge
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ARP Main studs

Hey all. I was curious if any one by chance has part numbers, sizes or any information i can give ARP to get full on main studs for my 6.5. A few people on other forum's say that they managed to have the special order department come up with something, but i figured i'd ask here first. Heath is getting over $400 for his kit, which IMHO thats a bit stiff. Besides, i want to use the DSG main girdle which comes with 6 outer studs, so i only need all of the inner studs and four shorter outers for locations 1 and 5.

Any information is appreciated.

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Last edited by JSarge; 01-12-2013 at 06:09 PM.
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Old 01-12-2013, 06:37 PM   #2 (permalink)
dieselolds
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Private message Ratman.He used ARP main studs in his 6.5 and should have the part numbers you need.

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1996 GMC Sierra ext.cab Z71....with new genuine GM 6.2 660 short block,4L80E/6.5TD cylinder heads,DS4 5521S,82' 6.2 rocker arms,acdelco TP1069/Racor 20S fuel filters,4" diamond eye exhaust,3.73 G80 locker,stanadyne 37818 injectors

1996 Chevy K1500 Z71.....with '99 6.5 506 goodwrench van engine,88-93 6.2 diesel Napa y-pipe,'87 700R4,acdelco TP630F/Racor 20S fuel filters,Bosch non-turbo injectors,stanadyne blue tag 5088

1993 Chevy K1500 Z71...with 97' 6.5 TD 506 block,82' 6.2 rocker arms,stanadyne 37818 injectors,stanadyne blue tag 4911,DSG girdle,reman 700R4,Banks boost/pyrometer gauges,acdelco TP1069/TP943 fuel filter system,4 diamond eye exhaust/2 piece crossover

2008 Mercedes Benz E320 3.0 V6 turbo diesel

2013 Volkswagen Passat 2.0 TDI

Last edited by dieselolds; 01-12-2013 at 06:38 PM.
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Old 01-12-2013, 06:40 PM   #3 (permalink)
Diaric
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Quote:
Originally Posted by dieselolds View Post
Private message Ratman.He used ARP main studs in his 6.5 and should have the part numbers you need.
If the numbers are found, maybe post them and nudge a staff member to stick them in the part number list
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well to make your pump retarded, you could let it hang out with me for a day
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Old 01-12-2013, 06:42 PM   #4 (permalink)
dieselolds
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Quote:
Originally Posted by Diaric View Post
If the numbers are found, maybe post them and nudge a staff member to stick them in the part number list
Sure.Sounds good diaric.No problem.
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1996 GMC Sierra ext.cab Z71....with new genuine GM 6.2 660 short block,4L80E/6.5TD cylinder heads,DS4 5521S,82' 6.2 rocker arms,acdelco TP1069/Racor 20S fuel filters,4" diamond eye exhaust,3.73 G80 locker,stanadyne 37818 injectors

1996 Chevy K1500 Z71.....with '99 6.5 506 goodwrench van engine,88-93 6.2 diesel Napa y-pipe,'87 700R4,acdelco TP630F/Racor 20S fuel filters,Bosch non-turbo injectors,stanadyne blue tag 5088

1993 Chevy K1500 Z71...with 97' 6.5 TD 506 block,82' 6.2 rocker arms,stanadyne 37818 injectors,stanadyne blue tag 4911,DSG girdle,reman 700R4,Banks boost/pyrometer gauges,acdelco TP1069/TP943 fuel filter system,4 diamond eye exhaust/2 piece crossover

2008 Mercedes Benz E320 3.0 V6 turbo diesel

2013 Volkswagen Passat 2.0 TDI
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Old 01-14-2013, 03:58 PM   #5 (permalink)
JSarge
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Bump to the top. Still hunting for this info.

I just got off the phone with ARP's special order department. They say they can put together a stud package for me, however i need to know the dimensions of the current main bolt's and the the thread pitch. Anything is appreciated. Thanks.
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[ '95 GMC C2500HD SLE 6.5TD 4L80E/G80/3.73 "F" TRIM - Ext Cab/Long Box ] Rebuild Thread: Click Here!
Vac pump del DE 3" down pipe w/ 4" straight pipe exits before axle H/O water pump 195 degree tstat
Manual Boost/Fuel Pres gauges Walbro FRC-10 Lift pump FFM delete Volvo marine water seperator/filter
Bumper mounted FSD Home made TM @ 10 PSI Lube specialists oil line's Rebuilt 506 w/ ARP main studs


[ '88 GMC C3500 DRW SLE 6.5TD TH400/DANA 80/4.10 "F" TRIM - Ext Cab/Long Box ] Rebuild Thread: Click Here!
SOLD

6.5 FAQ L@@K!: Click Here!

Last edited by JSarge; 01-14-2013 at 04:21 PM.
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Old 01-22-2013, 10:13 PM   #6 (permalink)
JSarge
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Alright guys, after hunting down some information, some measuring, and sitting on the phone with ARP.. i have figured a few things out.

One of those things is that i've decided to leave all of the original main studs in place, except for the outer bolts on the center three mains (the failing points).

I've run into a questionable issue when it comes to those studs. The outer bolt's measure out to be 2 7/8" or 2.875 from the tip to the bottom of the head. Obviously, going to a stud you are going to want a bit more over all length than that for the nut. Here are the two studs that ARP had to offer:

[AU3.420-2LB] $15.84 ea
~ARP2000 material (220KSI) w/ black oxide finish
~3.420” overall length
~1.000” of M12x1.75
~.443 reduced diameter shank
~1.000” of M12x1.25

and

[AU3.965-1LB] $6.79 ea
~8740 material (190KSI) w/ black oxide finish
~3.965” overall length
~1.200” of M12x1.75
~.471” full diameter shank
~1.125” of M12x1.25

As far as the first option goes, it measures out to be perfect. After knocking off the thickness of an ARP washer and nut, it will leave about .165 of stud out of the nut once pulled down. However, i am questioning the fact, that this particular stud has a reduced shank size of .443. Would this cause stress on the main cap or anything else because the shank of the stud is .028 smaller? I figured it is doubtful but i want to ask all questions.

As far as the second stud they had to offer goes, it would actually be useless for an OEM type application because of the length of the threads and the overall length itself. Do the math, the shank of the stud will be slightly sicking out of the main cap .. being useless. However, this would be a perfect stud for someone making an outer girdle ~3/4" thick.

As far as the inner stud's go, i have a direct part number that will work out well: (this stud is probably also available in the ARP2000 material if you ask)

[AU4.795-1L] $10.87 ea
~8740 material (190KSI) w/ black oxide finish
~4.795” overall length
~1.000” of M12x1.75
~.471” full diameter shank
~1.000” of M12x1.25
__________________
[ '95 GMC C2500HD SLE 6.5TD 4L80E/G80/3.73 "F" TRIM - Ext Cab/Long Box ] Rebuild Thread: Click Here!
Vac pump del DE 3" down pipe w/ 4" straight pipe exits before axle H/O water pump 195 degree tstat
Manual Boost/Fuel Pres gauges Walbro FRC-10 Lift pump FFM delete Volvo marine water seperator/filter
Bumper mounted FSD Home made TM @ 10 PSI Lube specialists oil line's Rebuilt 506 w/ ARP main studs


[ '88 GMC C3500 DRW SLE 6.5TD TH400/DANA 80/4.10 "F" TRIM - Ext Cab/Long Box ] Rebuild Thread: Click Here!
SOLD

6.5 FAQ L@@K!: Click Here!

Last edited by JSarge; 01-22-2013 at 10:16 PM.
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Old 01-22-2013, 10:26 PM   #7 (permalink)
JorgeNY
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Have you considered mailing the old bolts to ARP so they can size them up? Would that be a good idea?
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Old 01-22-2013, 11:42 PM   #8 (permalink)
JSarge
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Quote:
Originally Posted by JorgeNY View Post
Have you considered mailing the old bolts to ARP so they can size them up? Would that be a good idea?
Why would i do that when i can easily call them with exact dimensions etc which is what i did? They no longer custom manufacture anything, so whatever is on the shelf is what you have to pick from. What i have listed is what will work. All is good if i can find out a ~.020 thinner stud shank wont weaken anything. I plan to call and ask ARP tomorrow, just thought i would get everyones opinion.
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[ '95 GMC C2500HD SLE 6.5TD 4L80E/G80/3.73 "F" TRIM - Ext Cab/Long Box ] Rebuild Thread: Click Here!
Vac pump del DE 3" down pipe w/ 4" straight pipe exits before axle H/O water pump 195 degree tstat
Manual Boost/Fuel Pres gauges Walbro FRC-10 Lift pump FFM delete Volvo marine water seperator/filter
Bumper mounted FSD Home made TM @ 10 PSI Lube specialists oil line's Rebuilt 506 w/ ARP main studs


[ '88 GMC C3500 DRW SLE 6.5TD TH400/DANA 80/4.10 "F" TRIM - Ext Cab/Long Box ] Rebuild Thread: Click Here!
SOLD

6.5 FAQ L@@K!: Click Here!
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Old 01-23-2013, 07:00 AM   #9 (permalink)
JorgeNY
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I gotcha, I failed to read your entire post.
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Old 01-23-2013, 06:03 PM   #10 (permalink)
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not sure if was said, but the arp studs are from a 6.2L chev diesel motor, i went to auto parts store here, and they said there isnt any arp for the 6.5, i forgot that arp made em for the 6.2, asked for the 6.2 they said 500$, i said k cya, went to NAPA, asked there, they said it would be 230$ after taxes and id have em next day.... thats what i did, and that was about 5 months ago now


so if you need studs some arp head studs, cant get em, maybe i can get them here from napa still? so just pm me, i dont mind to help out if i can!

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