What have you done to your ride lately?

MatthewMay1

MatthewMay1

amateur professional
Alight, now I’m pretty mad. I got 2 new tensioner bolts (one to have as a spare just in case) and as I was installing the tensioner with my new gates belt, the new bolt stripped out in the exact same place the old bolt did. I’m starting to think the hole on the block must have rusted out or something. Now I’m not sure what I can do aside from helicoil the block. I’m using grade 8 bolts and am nowhere near the torque spec of 40 ft-lbs. it’s stripping at about 10 lbs, and that’s after threading it in all the way til it stops by hand.
 
Oswego

Oswego

n00b
got a pic of the stripped bolts or you toss them?
 
Oswego

Oswego

n00b
that sucks. only thing I can think of is to try and run a tap down it to clean the threads up/out, but thats still not 100% since they are that bad
 
MatthewMay1

MatthewMay1

amateur professional
Oswego said:
that sucks. only thing I can think of is to try and run a tap down it to clean the threads up/out, but thats still not 100% since they are that bad
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Oh I did that the first time the first bolt stripped. I can run the bolt in all the way by hand until the head bottoms out against the tensioner, then as soon as I put any torque on it with a wrench it strips.
 
tx_shooter

tx_shooter

It is not a war crime the first time.
Staff member
MatthewMay1 said:
Alight, now I’m pretty mad. I got 2 new tensioner bolts (one to have as a spare just in case) and as I was installing the tensioner with my new gates belt, the new bolt stripped out in the exact same place the old bolt did. I’m starting to think the hole on the block must have rusted out or something. Now I’m not sure what I can do aside from helicoil the block. I’m using grade 8 bolts and am nowhere near the torque spec of 40 ft-lbs. it’s stripping at about 10 lbs, and that’s after threading it in all the way til it stops by hand.
Click to expand...

Sounds like the bolt got torqued way too tight in that aluminum block at some point earlier in life. Sucks man. I had a similar situation with one of my intake bolts.
 
balakay

balakay

BabyMax
MatthewMay1 said:
Alight, now I’m pretty mad. I got 2 new tensioner bolts (one to have as a spare just in case) and as I was installing the tensioner with my new gates belt, the new bolt stripped out in the exact same place the old bolt did. I’m starting to think the hole on the block must have rusted out or something. Now I’m not sure what I can do aside from helicoil the block. I’m using grade 8 bolts and am nowhere near the torque spec of 40 ft-lbs. it’s stripping at about 10 lbs, and that’s after threading it in all the way til it stops by hand.
Click to expand...

Grade 8 bolts are for standard so if they're actually grade 8... try a metric bolt.
 
MatthewMay1

MatthewMay1

amateur professional
Taco Loco said:
Can take a pic of the threaded hole as well?
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Not at the truck now. I’m going to work tomorrow so it might be 14 days until I can work on it again. Unless I can figure something out.
tx_shooter said:
Sounds like the bolt got torqued way too tight in that aluminum block at some point earlier in life. Sucks man. I had a similar situation with one of my intake bolts.
Click to expand...
It was an unused threaded hole on the block, and isn’t the 3.4 an iron block? That is why I came up with the hypothesis that it was rusted out.
balakay said:
Grade 8 bolts are for standard so if they're actually grade 8... try a metric bolt.
Click to expand...
Grade 8.8 then. It’s the correct bolt. M10 x 1.25 x 130 as prescribed by the instruction manual
 
Silverback

Silverback

Lima Gulf Bravo Foxtrot Juliet Bravo
MatthewMay1 said:
Not at the truck now. I’m going to work tomorrow so it might be 14 days until I can work on it again. Unless I can figure something out.
Click to expand...

Stay safe out there Capt Matthew.
 
tx_shooter

tx_shooter

It is not a war crime the first time.
Staff member
MatthewMay1 said:
Not at the truck now. I’m going to work tomorrow so it might be 14 days until I can work on it again. Unless I can figure something out.

It was an unused threaded hole on the block, and isn’t the 3.4 an iron block? That is why I came up with the hypothesis that it was rusted out.

Grade 8.8 then. It’s the correct bolt. M10 x 1.25 x 130 as prescribed by the instruction manual
Click to expand...

Correct - heads and intake are aluminum, block is iron.

Stay safe out there flying; but at least you have a job. Lots of people wish they had that right now.
 
CowboyTaco

CowboyTaco

Well-Known Member
tex said:
It's the best advice.
2nd best is 1UZ swap
Click to expand...

2JZ is the best advice and keeps it in the family.

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