So I was tired of fishing through all the crap to find a correct answer, so I called ARP myself.

For the GSR 11mm headbolts: 80 ft/lbs with ARP Moly Lube
85 ft/lbs with 30w oil

For GSR Rod Bolts: 26 ft/lbs with ARP Moly Lube

Here are the part numbers from Summit:
ARP-208-4303-Head Studs
ARP-208-6001-Rod Bolts

Hope this helps clear up any confusion!!

 

You might want to double check with a good honda engine builder re the head stud torque number. I repeat good - not some retarded phucktard that has "built" some engines.

 

That head stud number is way off especially lubed.

I'm not a engine builder but I torque to 62 ft-lbs in two steps (22 ft-lbs 1st step).
I also have a sh*tty torque wrench.

The honda spec is 60 ft-lbs.

 

That is just what they said, just passing the info along......

I did think 80 was a little high. The rod number's seem to be pretty close to stock numbers.

 

For the rod bolts use a Stretch gauge so that you don't over tighten them. For the ARP they recommend stretching the bolts to 0.0058 to 0.0062" I would tighten them to 0.0060 just to be in the middle of the recommended stretch range.


Modified by PuroMotor at 10:55 AM 5/8/2008


Modified by PuroMotor at 10:56 AM 5/8/2008

 

If you measure the stretch and it was 0.006 exactly, does this mean the bolt is providing the appropriate clamping force? This is an advanced engine builder question. Those who know this are good engine builders, not phucktards that "built" motors.

<FONT SIZE="5">KNOWLEDGED FO DA WIN!!!</FONT>

 

should we pay attention to bearing crush

 

I dont really understand your question. You mean that if the rod bolt measures 0.006 that its at a proper clamping force? Then yes it is. ARP recommends the bolts to measure within 0.0058 to 0.0062. Anywhere in between the two measurements is fine.

here is a reference chart
[img=http://img136.imageshack.us/img136/2120/gsr120hn3.th.jpg]

 

Need to understand the function and limits of fasteners and how they work. Some key terms/concepts to understand.

- Elastic Range
- Inelastic Range
- Plastic Deformation
- Stress-Yield Curve

Carroll Smith's book Prepare to Win does a good job of explaning these concepts.

 

Ok, so what was wrong with my post?

 

hmmm cool.. ok no wonder arp, has all the info needed to support their rod bolts etc.. the other half must be the "users" responsibility to seek/understand + apply

awesome stuff!!

lol was way off on the crush thing haha

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PuroMotor &raquo;</TD></TR><TR><TD CLASS="quote">I dont really understand your question. You mean that if the rod bolt measures 0.006 that its at a proper clamping force? Then yes it is. ARP recommends the bolts to measure within 0.0058 to 0.0062. Anywhere in between the two measurements is fine.

here is a reference chart
[img=http://img136.imageshack.us/img136/2120/gsr120hn3.th.jpg]</TD></TR></TABLE>

<FONT SIZE="5">WRONG</FONT>

What if I gave you a bolt that has been previously overtoqrued and has no more "spring" to it. It will still stretch to 0.006 but have little if any clamping force.

Let me us know if you don't understand.

<FONT SIZE="5">THIS IS THE SECOND MOST MISCONCEIVED MISCONCEPT AFTER THE RIDICULOUS BUT UNIVERSALLY ACCEPTED CONCEPT THAT OVERLAP "BLEEDS COMPRESSION"</FONT>

 

<FONT SIZE="5">THAT'S WHY EAGLE TELLS YOU TO MEASURE THE RELAXED LENGTH OF THE ROD BOLT AND WRITE IT DOWN FOR FUTURE REFERENCE SO YOU CAN CHECK THE LENGTH AGAIN TO SEE IF THE BOLT IS STILL GOOD</FONT>

If you don't understand this don't use a stretch gauge, coz you ain't using it properly. PERIOD!!

 

Chill out dude.. If im wrong I would like to be corrected so that I can learn. Im not nor do I claim to be a "master engine builder" I understand what you are saying. The guy has brand new ARP which means they would be stretched for the first time correct? So new ones can be stretched to 0.006 to have good clamping force. Its common sense a previously overtorqued bolt wouldn't work.

 

You assume brand new. Doesn't mean **** still.

This why people have "mysterious" problems.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PuroMotor &raquo;</TD></TR><TR><TD CLASS="quote">Its common sense a previously overtorqued bolt wouldn't work.</TD></TR></TABLE>

How would you know if a bolt was over-torqued.

Tell me the criteria which you use to identify over-torqued bolts?

 

Ok. So what would be the proper procedure for torquing rod bolts?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Master of the Universe &raquo;</TD></TR><TR><TD CLASS="quote">

How would you know if a bolt was over-torqued.

Tell me the criteria which you use to identify over-torqued bolts?</TD></TR></TABLE>

you yourself said you have to write down all the info when torquing the rod bolts so that you would know in the future. so once you have torqued them once you know you cant stretch them again correct?

or is there another way to know?

im not trying to argue i just want to know how its done

 

You need to take a back seat and not post re this.

You get a set of bolts and don't know the orignial free length, what do you do then.

I already know your answer, "I don't know, coz I am just here to learn..."

 

Ask DonF. He's nicer than I am and a very good engine builder.

 

Ok thanks.

have a good day sir

 

Before I stick my foot in my mouth. Lets say you have an 8mm rod bolt. Does the rod bolt measure 8mm front tip to tip. The only reason I ask is if my memory is correct rod bolts have dimples in them so that you can setup the gauge so were does the actual 8mm comes from.

Let me know if that is a bit confusing then I will attempt to contribute my input.

 

8mm refers to the shank diameter.

 

So when measuring before you torque.. do you measure the length or the grip in that picture?

 

Measure from dimple to dimple.

But there is an easier way to make sure you are not using bad bolts. So simple you'll be kicking yourself and you will prolly put the stretch gauge away.