venolia rod torq spec ??

what is the torq spec on the 7/16 a1 bolts in venolia rods
thanks

 

Bolt Torque

There are many grades of cap screw style rod bolts from A1 just like ARP.
To answer the Question on how much to torque the bolts to achieve proper preload and therefore stretch I would need to know what bolts they are and the UHL (Under Head Length).
The brand of rod is not that important.
The lube used is important.

Examples of ARP bolts with ARP assembly lube

7/16" ARP 8740 Torque- 63 ft. lbs Stretch .0059-.0063

7/16" ARP 2000 Torque- 75 ft. lbs Stretch .0064-.0068

7/16" ARP L-19 Torque- 79 ft. lbs Stretch .0073-.0077

 

rod bolt torque

776 is right ' but there is not a rod manf. that I know of that doesn't tell you to torque there bolts with 30 wt. oil. also they say NEVER torque them hot, but that is a little difficult to do between rounds when the motor is still hot. The stretch method is the best way to go. but use oil on the bolts. Find out from Venoila what bolts you have. is the best way. Should of been on the paperwork.Just my way. and alot of others. I am not wanting to step on anyone's toes. Everyone has there own ways. Don

 

the only thing the bolts have on them is venolia a1 it shows on venolia web site h11 a1 7/16 bolts lost papers on torq spec was trying to button this thing up this evening and thought someone else on here my use the same bolt with venolia rods that has the specs
thanks

 

torque

good luck. That H-11 stuff is way different. Don

 

A-1 bolt torque specs:


Each pair of bolts should be "snugged" up. Then from bolt to bolt, torque successively to 25, 45, 50 and find final torque setting. This torquing sequence assures even tightning of cap and equall stressing of the bolts. Final torque figures to be used,

Small Block Chevy: 70 lbs

Big Block Chevy: 80 lbs

Chrysler: 90 lbs

 

I was just at Venolia picking up new rods and the spec they gave me was 5 lbs higher that shown above. Hemi = 95 ft lbs. that is what we are going with.

 

Never heard of torquing rod bolts in stages befour GRP and MGP say one hit to 95...anyone???

 

Rods

X2 on hitting them to full torque. I just looked at the papers that came with my GRP's and it says to go to full torque in one even pull.


Corey

 

torque

I was always told to do one torque setting and never in steps.

Sean

 

info quoted as per the venolia spec sheet that came with the rods i purchased direct from venolia, good news that you have contacted them directly.

 

If thats what venolia want i guess thats what you gotta do,
just glad i dont use their rods can you imagin the hassel checking your bearings after every pass as we do

 

x3 on the single pull deal. The stepped deal is a really old school thing that has not gone away entirely. OEMs used to do the same thing. Time, technology and experience have passed it by.

I suggest that to cover all the bases we/they would adapt the torque/turn method. That would cover the stretch and bogus torque readings all in two steps. Seems to work well for industrial applications and modern oem engines. Sure would speed up things between rounds...and there would be a reason to buy one of those high zoot snap on electronic wrenches.

Dave Koehler
http://www.koehlerinjection.com

 

Do the serations on the rod caps make a differnce in the sequence? I like the MGP's at one pass for the torque but the Brooks are a pain with the five different torque levels. Also, what about between round maintenance when the rods are warm? Brooks says they don't want you to torque when warm. How does everyone handle that?

 

well as you say most of the time you gont get much options torque warm or dont check the bearings,
TBH by the time it comes to retorquing they are barely warm probably not enough to make a difference we only run our rods for 15/16 passes so its not an issue