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Small block rear main studs #1422674
04/20/13 07:30 PM
04/20/13 07:30 PM
Joined: Oct 2003
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ont,canada
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mopartuner Offline OP
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ont,canada
I cant get the oil pump on because the main studs are too long.This happened on an old build and I think I just used a stock bolt but I dont want to do that this time.This is a fairly high hp combo this time.What is the best fix for this?


410 pump gas solis flat tappet cam 10.95 so far
Re: Small block rear main studs [Re: mopartuner] #1422675
04/20/13 07:32 PM
04/20/13 07:32 PM
Joined: Jan 2003
Posts: 6,145
Melbourne , Australia
LA360 Offline
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Melbourne , Australia
Machine the cap and shorten the stud


Alan Jones
Re: Small block rear main studs [Re: LA360] #1422676
04/20/13 07:58 PM
04/20/13 07:58 PM
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ont,canada
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mopartuner Offline OP
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I don't really have the equipment to do the machine work.........what about a arp bolt or a #8 bolt?


410 pump gas solis flat tappet cam 10.95 so far
Re: Small block rear main studs [Re: mopartuner] #1422677
04/20/13 10:15 PM
04/20/13 10:15 PM
Joined: Jan 2003
Posts: 449
Baltimore, MD
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397STROKER Offline
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Baltimore, MD
I have cut the stud so that it doesn't stick out but a few threads past the nut and then grinded just enough metal off of the pump to clear. I have heard of people just putting a bolt in.

Re: Small block rear main studs [Re: 397STROKER] #1422678
04/20/13 10:42 PM
04/20/13 10:42 PM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
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I've done it both ways... cut the cap and studs or
just use the bolts in the rear

Re: Small block rear main studs [Re: MR_P_BODY] #1422679
04/20/13 11:36 PM
04/20/13 11:36 PM
Joined: Oct 2003
Posts: 7,506
Az
Crizila Offline
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Quote:

I've done it both ways... cut the cap and studs or
just use the bolts in the rear



Used the stock bolts w/ the washers that came with the studs to try a spread the load a little better.


Fastest 300
Re: Small block rear main studs [Re: MR_P_BODY] #1422680
04/20/13 11:40 PM
04/20/13 11:40 PM
Joined: Dec 2003
Posts: 628
Denison,Ia.
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Denison,Ia.
Arp has a twevle point nut with washer style end. Cut the stud and install the nut. This is correct way to do this. Anyhting else is make shift. I have posted this enough it just should be standard issue by now Arp should have corrected this a long time ago and just included the nut with the set.

Re: Small block rear main studs [Re: Crizila] #1422681
04/20/13 11:42 PM
04/20/13 11:42 PM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
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Quote:

Quote:

I've done it both ways... cut the cap and studs or
just use the bolts in the rear



Used the stock bolts w/ the washers that came with the studs to try a spread the load a little better.




Yeah I always use the washers also

Re: Small block rear main studs [Re: Cuda367] #1422682
04/21/13 03:19 PM
04/21/13 03:19 PM
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Kissimmee Fl.
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dusturbd340W5 Offline
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Quote:

Arp has a twevle point nut with washer style end. Cut the stud and install the nut. This is correct way to do this. Anyhting else is make shift. I have posted this enough it just should be standard issue by now Arp should have corrected this a long time ago and just included the nut with the set.




this is what I do no need to cut the cap


70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake

best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4
Re: Small block rear main studs [Re: dusturbd340W5] #1422683
04/21/13 09:03 PM
04/21/13 09:03 PM
Joined: Feb 2007
Posts: 1,025
Las Vegas, NV
dodgeboy11 Offline
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I cut the stud and used the 12 pt nut with no washer. A valve tip grinder really works good to make the end of the stud look good, but it isn't necessary.

Re: Small block rear main studs [Re: dodgeboy11] #1422684
04/21/13 10:02 PM
04/21/13 10:02 PM
Joined: Aug 2003
Posts: 11,179
Atco NJ
DJVCuda Offline
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I made almost 630 hp and used the stock bolt.

ARP sent me a new bolt but it bottomed out right at the point where it hit the main - it looked torqued, but it was not - and the cap would have moved...


Re: Small block rear main studs [Re: dodgeboy11] #1422685
04/22/13 01:27 PM
04/22/13 01:27 PM
Joined: Feb 2003
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Columbia, CT
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moper Offline
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Quote:

I cut the stud and used the 12 pt nut with no washer. A valve tip grinder really works good to make the end of the stud look good, but it isn't necessary.




x2 - and done it multiple times.


Well, art is art, isn't it? Still, on the other hand, water is water! And east is east and west is west and if you take cranberries and stew them like applesauce they taste much more like prunes than rhubarb does. Now, uh... Now you tell me what you know.
Re: Small block rear main studs [Re: dodgeboy11] #1422686
04/22/13 01:37 PM
04/22/13 01:37 PM
Joined: Nov 2004
Posts: 3,544
Syracuse,NY
CompWedgeEngines Offline
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Quote:

I cut the stud and used the 12 pt nut with no washer. A valve tip grinder really works good to make the end of the stud look good, but it isn't necessary.





Thats exactly what I do now. I used to cut the cap about .180, now just dont use the washer. A small grind is sometimes necessary on the oil pump boss. I also finish it nice with the valve grinder and a nice little radius afterwards.The radius sometimes helps it clear the bottom of the pump better as well.

I had spoke to ARP about this before, just dont think its anything they will ever address. The key to NOT using a washer is to properly burnish the nut and " seat" in.I psoke to one of their engineers once about this, and the nut handles a significant load, close to what the washer will do ( and WAY more than we need to worry about here anyhow), but more important was that the underside of the nut, and the pump washer boss were brunished in so to speak.


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WD for Diamond Pistons,Sidewinder cylinder heads, Wiseco, K1 rods and cranks,BAM lifters, Morel lifters, Molnar Technologies, Harland Sharp, Pro Gear, Cometic, King Engine Bearings and many others.
Re: Small block rear main studs [Re: CompWedgeEngines] #1422687
04/23/13 10:08 AM
04/23/13 10:08 AM
Joined: Feb 2007
Posts: 1,025
Las Vegas, NV
dodgeboy11 Offline
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Las Vegas, NV
Here's a picture of mine. Looks like I cut the top of the nut but I had left it on the stud so I knew how much to take off and had just barely touched the nut with the grinding wheel.

Re: Small block rear main studs [Re: dodgeboy11] #1422688
04/23/13 11:33 AM
04/23/13 11:33 AM
Joined: Oct 2003
Posts: 7,506
Az
Crizila Offline
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Crizila  Offline
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Az
Quote:

Here's a picture of mine. Looks like I cut the top of the nut but I had left it on the stud so I knew how much to take off and had just barely touched the nut with the grinding wheel.


Nice! Probably what I should have done.


Fastest 300
Re: Small block rear main studs [Re: Crizila] #1422689
04/23/13 02:12 PM
04/23/13 02:12 PM
Joined: Jul 2010
Posts: 224
in the middle
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dodger mope Offline
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if you cant use the washer,anti-seize under the nut will help with the torque number

Re: Small block rear main studs [Re: dodger mope] #1422690
04/23/13 04:56 PM
04/23/13 04:56 PM
Joined: Feb 2007
Posts: 1,025
Las Vegas, NV
dodgeboy11 Offline
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Las Vegas, NV
ARP thread lube is all I use. All the torque numbers for their fasteners is with their lube so it's best to stick with it.







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