![]() |
|
|
#1 (permalink) |
|
Opeler
Join Date: Apr 2006
Location: Greece
Posts: 168
![]() |
Unanswered: ARP2000 torque???
can anyone give a little light on this subject??? plus i got myshelf a set of fllywheel arp bolts from the toyota 4ag bolts.On their paper they say with 30w oil to give them 85pf/lbs (not mentioned of re-torque them 3 times)anyway on my 2512 engine seemed to work just fine as long as this engine lasted.But i have to two separate 2.5cih race engines and both on their first runs they where chopped at once!!!!???Probably fualty torque wrench?? |
|
|
|
|
|
#3 (permalink) |
|
Opeler
Join Date: Apr 2006
Location: Greece
Posts: 168
![]() |
Yes i have moly lube.but since the seller put in the same bag an assemly oil and the moly lube i thought to ask more general.Yes the strech method is better but i know only the torque number setting and i doubt that i will find out the stretching numbers.Anyway what torque numbers are more correct for the arp2000 3/8(9mm)connecting rods?
|
|
|
|
|
|
#5 (permalink) | |
|
Project 1450 supporter...
Join Date: Mar 2002
Location: Pleasant Valley, CT
Posts: 7,452
Real Name: Bob Legere
![]() ![]() Provided Answers: 20
|
Also, the torque spec changes a LOT when you use the moly lube compared to the 10w-30 oil. As an example, the ARP flywheel bolts for a Chevy V8 (7/16") are rated at 115 ft lbs of torque with 10w-30 oil, but only 85 ft lbs with moly lube! So you must be positive of which lubricant to use with the appropriate torque spec. Bob
__________________
My Flickr photos. Jan. 3, 1984 - Jan. 3, 2009, that's 25 years of this damn Opelitis! C.R.L. 9/22/69 - 12/8/99, J.M.L. 3/3/43 - 6/15/04 |
|
|
|
|
|
|
#7 (permalink) |
|
Opeler
Join Date: Aug 2008
Location: England, leyland
Posts: 77
![]() |
Vagos
Got a set of forged rods myself with ARP2000 bolts fitted. I'm 99% sure that the torque setting is 47ft/lb for the bolts. You MUST use the special lube that comes with the rods/bolts not oil. Also it tells you to tighten to the 47 ft/lb 3 times to settle the bolts down. Reading the ARP web site the accurate way to tighten is the stretch method but i am not familiar with this so i can't comment. Personally i would tighten up the bolts 20, then 30, then 40, and finally 47, and then repeat 3 times. If i'm wrong in doing this please tell me, someone, as i will be fitting my rods in the near future!!! Just in case the 1% chance i'm wrong with the 47 figure i will post the correct info when i have dug out the instructions that i have (SOMEWHERE!!!!) Hope this helps Chris |
|
|
|
|
|
#8 (permalink) | ||
|
1000 Post Club
|
100% clamping vs 80% torque method faster build time stronger Now the bads ![]() you'll need special tools ONCE stretched you cant/should not reuse!!!!!!!! I use a steady pull on the first 2 cycles of the bolts then get picky on the last pull. Dont forget to check the calibration of your torque wrench.. I'm guilty also its been over 5 years for mine. Last edited by wrench459; 09-13-2008 at 01:01 AM. |
||
|
|
|
|
|
#9 (permalink) |
|
Opeler
Join Date: Apr 2006
Location: Greece
Posts: 168
![]() |
I dont want to take anyone on my neck but from what i learned so far searching and asking around is that the are some general arp2000 bolts same lenght for probably half or more connecting rods outhere.Typical figures are with arp lobe 45ft/lb re -tighten up to 3 times.I also asked a friend who had worked this rods before and he told me that the typical lb,kilos for them are from 6-6,5kg.Somethmes he used oil some times not.Still no rod fuilure up today.Offcourse when you buy cheap and not from a well known company you probably get what you asked for.
|
|
|
|
![]() |
| Bookmarks |
| Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
| Thread Tools | |
| Display Modes | |
|
|