kx3g

Got them installed tonight. Took 4 hrs to do the the passenger side (damn SFC bolt alignment) and 30 mins to do the driver side. Test drive will have to wait til tomorrow.

Anybody know the torque specs for these things?

87Boosted4.8

not real sure on the specs but id imagine around 40ft-lbs or so, needs to be pretty tight but not so tight as to crush the center bushing. Honestly, i installed mine with an impact and a lock washer. Works great, rides better, less tendency to break the wheels loose in a corner too.

blacksunshine'91

iTrader: (10)

I would think the torque specs would be the same as the stock values.

sofakingdom

iTrader: (1)

Torque goes with hardware size, as always.

If memory serves on what size bolt it is, should be something in the 80-90 ft-lb range.

kx3g

Thanks for the responses. I saw another post from "Foundersperf" or something that looked like it might be someone from Founders. The post was about relocation brackets, LCAs, and panhard bar. Anyway, they said 93 lbs or somewhere around that, but it wasn't clear which piece they were talking about.

For now I've tightened as much as I could with a rachet and open end wrenches (no breaker bars participated). I'm going to put a torque wrench on them tonight.

FoundersPerf

If they are grade 10.9 bolts the 97.5 foot/pounds for zinc plated and 87.75 for un-plated. If they are grade 8.9 you will want to be 65.25 foot/pounds plated and 59.25 for the un-plated. Make sure when you re-torque the bolts to loosen them first so you get an accurate torque reading. These are the factory hardware size of M12 x 1.75 pitch.

kx3g

Thanks FoundersPerf. I was hoping you would chime in. They are the bolts that come in your hardware kit. I'm pretty sure they are the 10.9 and look to be zinc plated (I'm no bolt expert though).

FoundersPerf

Yes they are grade 10.9 zinc plated. These torque specs are for dry bolts. If you use a loctite (I don't recommend) you will want to lower the torque specs by about 10%.

kx3g

Got them torqued to 97. Seems awful tight, even stripped one of the nuts, but I got them there. Went for a spirited ride and what a difference they made. I really like them. Now to fix the coolant leak that showed up as a result of the spirited ride.

Veaceonee

iTrader: (1)

I torqued mine to the factory torque of 80 ft lbs. Should I bump it up?

FoundersPerf

Your okay at 80.

FoundersPerf

My bad - I just looked at my bolt torque chart again and I told you the torque ratings for the grade 12.9 bolts we use for another part. The torque rating for the 10.9 bolt should be 83 foot pounds.

kx3g

Oops! I thought that seemed a bit much. Hopefully no damage done.