Helicoil For Intake Manifold
I don't use my stupid cheap AmPro torque wrenches anymore for the plenum. Just "hand tight" holding a socket driver with one hand and no lever arm action, then another 10-20 degrees on the bolt. Haven't had a leak so far (as far as I know). Lot faster getting it back on too. I figure it'll be back off again before it has a chance to develop an air leak!
Last edited by rcdash; Jul 7, 2008 at 07:11 PM.
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WTF I was tourquing another bolt down, and the bolt snapped in half at 7 ft-lbs. The broken bolt is now stuck in the lower plenum. It was a perimeter bolt. The manual says to tourque these down to 9ft.lbs. This manifold is a complete POS! 
I was also using a new digital $230 tourque wrench so they wouldn't strip!
Now I need another rev-up lower plenum. Who's got one they want to sell?
I was also using a new digital $230 tourque wrench so they wouldn't strip!
Now I need another rev-up lower plenum. Who's got one they want to sell?
Last edited by JETPILOT; Jul 8, 2008 at 04:09 AM.
Originally Posted by JETPILOT
WTF I was tourquing another bolt down, and the bolt snapped in half at 7 ft-lbs. The broken bolt is now stuck in the lower plenum. It was a perimeter bolt. The manual says to tourque these down to 9ft.lbs. This manifold is a complete POS!
I was also using a new digital $230 tourque wrench so they wouldn't strip!
Now I need another rev-up lower plenum. Who's got one they want to sell?
I was also using a new digital $230 tourque wrench so they wouldn't strip!
Now I need another rev-up lower plenum. Who's got one they want to sell?
You should probably buy a dedicated inch-pound torque wrench for these low torque jobs. Torque wrenches are most accurate at the top end of the functional range. on your wrench, the range is some thing like 5-100 ft-lb (or is it 10-100 ft-lb), the closer you are to the 100 ft-lb range, the more accurate the wrench is.
I use my Snap-On Digital torque wrench on the bigger stuff, and I use a craftsman 3/8" in-lb wrench (25-250 in-lbs) that I bought just for the manifold.
also, I go by the motordyne specs for torquing the plenum. 40 inch- pounds....then 80 inch-pounds, and then finally 100 inch-pound on the preimeter bolts only. keep the 6 interior long bolts at 80 in-lbs.
Last edited by QuadCam; Jul 8, 2008 at 02:26 PM.
Originally Posted by rcdash
I don't use my stupid cheap AmPro torque wrenches anymore for the plenum. Just "hand tight" holding a socket driver with one hand and no lever arm action, then another 10-20 degrees on the bolt. Haven't had a leak so far (as far as I know). Lot faster getting it back on too.
This is exactly what I do. Hand tighten, then I use a ratchet to turn the bolt @ 1/4 of a turn more. No problems yet. Knocks on wood.
Originally Posted by JETPILOT
Now I need another rev-up lower plenum. Who's got one they want to sell?
Originally Posted by QuadCam
Larry,
You should probably buy a dedicated inch-pound torque wrench for these low torque jobs. Torque wrenches are most accurate at the top end of the functional range. on your wrench, the range is some thing like 5-100 ft-lb (or is it 10-100 ft-lb), the closer you are to the 100 ft-lb range, the more accurate the wrench is.
I use my Snap-On Digital torque wrench on the bigger stuff, and I use a craftsman 3/8" in-lb wrench (25-250 in-lbs) that I bought just for the manifold.
also, I go by the motordyne specs for torquing the plenum. 40 inch- pounds....then 80 inch-pounds, and then finally 100 ft-pound on the preimeter bolts only. keep the 6 interior long bolts at 80 in-lbs.
You should probably buy a dedicated inch-pound torque wrench for these low torque jobs. Torque wrenches are most accurate at the top end of the functional range. on your wrench, the range is some thing like 5-100 ft-lb (or is it 10-100 ft-lb), the closer you are to the 100 ft-lb range, the more accurate the wrench is.
I use my Snap-On Digital torque wrench on the bigger stuff, and I use a craftsman 3/8" in-lb wrench (25-250 in-lbs) that I bought just for the manifold.
also, I go by the motordyne specs for torquing the plenum. 40 inch- pounds....then 80 inch-pounds, and then finally 100 ft-pound on the preimeter bolts only. keep the 6 interior long bolts at 80 in-lbs.
.Will
Originally Posted by Resolute
A big +1 to this. I do the same, except a 100in/lbs and not ft-pounds on the perimeter bolts.
Will
.Will
thanks Will. I edited my previous post to now show in-pounds. I could have really screwed someone over with that one! 
