It is currently Mon Aug 19, 2019 6:58 am

All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 6 posts ] 
Author Message
 Post subject: ARP rod bolts not very expensive: calling all experts
PostPosted: Wed Feb 06, 2019 8:49 pm 
Offline
LOST Addict
User avatar

Joined: Sat Nov 23, 2013 8:57 pm
Posts: 2285
Location: Boise, Idaho
Here's what I found for about $16 per 5 at summit racing.

https://www.summitracing.com/parts/arp-662-1007

-( MAYBE NOT) 2mm more thread engagement (maybe not with washer)
- stronger by 10 or 20,000 PSI

Questions:
1. Haven't found contact surface of the bolt head. The factory bolts have 11mm of surface pressing on the rod cap. I don't know if this matters much.
2. Our factory bolts list a 65 ft/lb final check torque, and ARP lists 54 or 57 ft/lbs for these bolts. Is it safe to just torque them to 65 since they are stronger?
3. Since they are 2mm HEAVIER, I'm guessing that do to balance this better be an all or nothing application?

This is mostly to avoid the annoying 60 degrees of torque, or for you that are running the engines extra HP.

_________________
05 CRD: H.D.S2 stat,WW Ironrock trilink, Integrated air OX rear,truetrac front, Suncoast,OME 2.5, JBA UCA,rock rails, Moabs&245/75 Duratracs, GDE tunes ,FFD fan,ARP's, 2 micron fuel, new head,rockers, cams,sasquatch battery tray & grid heater, welded EGR port & trans drain, muffler delete,tensioner relocated
Mech fan VH & AC delete


Last edited by Mountainman on Wed Feb 06, 2019 11:40 pm, edited 1 time in total.

Top
 Profile  
 
 Post subject: Re: ARP rod bolts not very expensive: calling all experts
PostPosted: Wed Feb 06, 2019 10:53 pm 
Offline
LOST Member

Joined: Sat Oct 13, 2018 10:09 pm
Posts: 140
Location: Australia
They look good. Being Chrome/molly they should be very tough. The pic looks like they have washer heads. I suspect the extra weight is because they don't have the necking down that stretch bolts normally have. The only down side is you need to buy 2 packs (10) so you end up with 2 spare.
We need a CRD parts sticky with all these links to parts info. We have one on the XJ diesel (VM425) section of Ausjeepoffroad.com.au in Australia.

_________________
Australian KJ CRD 2006


Top
 Profile  
 
 Post subject: Re: ARP rod bolts not very expensive: calling all experts
PostPosted: Wed Feb 06, 2019 11:38 pm 
Offline
LOST Addict
User avatar

Joined: Sat Nov 23, 2013 8:57 pm
Posts: 2285
Location: Boise, Idaho
layback40 wrote:
They look good. Being Chrome/molly they should be very tough. The pic looks like they have washer heads. I suspect the extra weight is because they don't have the necking down that stretch bolts normally have. The only down side is you need to buy 2 packs (10) so you end up with 2 spare.
We need a CRD parts sticky with all these links to parts info. We have one on the XJ diesel (VM425) section of Ausjeepoffroad.com.au in Australia.


Thanks for pointing out the potential washer. Maybe LESS thread engagement. They off longer ones, but looks like it's a full 10mm more for the next size up. They would fit, but I'd hate to add that much weight, but maybe it's no big deal?

_________________
05 CRD: H.D.S2 stat,WW Ironrock trilink, Integrated air OX rear,truetrac front, Suncoast,OME 2.5, JBA UCA,rock rails, Moabs&245/75 Duratracs, GDE tunes ,FFD fan,ARP's, 2 micron fuel, new head,rockers, cams,sasquatch battery tray & grid heater, welded EGR port & trans drain, muffler delete,tensioner relocated
Mech fan VH & AC delete


Top
 Profile  
 
 Post subject: Re: ARP rod bolts not very expensive: calling all experts
PostPosted: Thu Feb 07, 2019 1:49 pm 
Offline
LOST Addict
User avatar

Joined: Sat Nov 23, 2013 8:57 pm
Posts: 2285
Location: Boise, Idaho
Wait a second, wouldn't ARP have 50mm of thread contact on an advertised 50mm bolt? Well, the washer is probably only 3mm thick anyhow, for a 1mm loss of engagement.
I wonder if the hex bolt plus the washer is enough extra weight to make any difference though?

_________________
05 CRD: H.D.S2 stat,WW Ironrock trilink, Integrated air OX rear,truetrac front, Suncoast,OME 2.5, JBA UCA,rock rails, Moabs&245/75 Duratracs, GDE tunes ,FFD fan,ARP's, 2 micron fuel, new head,rockers, cams,sasquatch battery tray & grid heater, welded EGR port & trans drain, muffler delete,tensioner relocated
Mech fan VH & AC delete


Top
 Profile  
 
 Post subject: Re: ARP rod bolts not very expensive: calling all experts
PostPosted: Mon Feb 11, 2019 4:48 am 
Offline
LOST Addict
User avatar

Joined: Sat Aug 27, 2016 9:12 pm
Posts: 2377
Location: Oregon Coast Dairy Country. Land of stumps, dumps, and "Liquid Pumps"
Why not just use studs?
That way you can tighten them for stretch rather than torque.
It's far more accurate and the preferred method of high end & custom engine builders.

_________________
'06 Lbrty Sprt CRD 150K

Sasquatch
DSS Turbo
CAT-elimntr
Weeks Stg1&2 EGRfix
PV-200
BLING
vent gauges

IDParts
head
cams
rockers
Timing set
ARP studs
eTn1 GX2123 5v GPs

YETI Custom Tune
Flowmaster 8325508
Carter P76611M
GM 12611872
Hayden 2986
GM 15976889
PATC Custom Billet
2010 Ram Hemi Trans
Sonnax 44957
Transgo kit
Cooper 51770


Top
 Profile  
 
 Post subject: Re: ARP rod bolts not very expensive: calling all experts
PostPosted: Mon Feb 11, 2019 11:57 am 
Offline
LOST Addict
User avatar

Joined: Sat Nov 23, 2013 8:57 pm
Posts: 2285
Location: Boise, Idaho
GordnadoCRD wrote:
Why not just use studs?
That way you can tighten them for stretch rather than torque.
It's far more accurate and the preferred method of high end & custom engine builders.


Good idea, I'll see what they have

_________________
05 CRD: H.D.S2 stat,WW Ironrock trilink, Integrated air OX rear,truetrac front, Suncoast,OME 2.5, JBA UCA,rock rails, Moabs&245/75 Duratracs, GDE tunes ,FFD fan,ARP's, 2 micron fuel, new head,rockers, cams,sasquatch battery tray & grid heater, welded EGR port & trans drain, muffler delete,tensioner relocated
Mech fan VH & AC delete


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 6 posts ] 

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: Exabot [Bot] and 25 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group. Color scheme by ColorizeIt!
Logo by pixeldecals.com