Big shots install
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6th Gear
Joined: Aug 2010
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Big shots install
Just got my vance and hines big shots in gonna put them on soon is it easier put pipes on first then The heat shields or clamp heat shields on first then bolt on he whole set up on?
Cruiser
Joined: May 2012
Posts: 220
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From: San Diego
Do the heat shields first, just loosely. Install the pipes. Then snug up the heat shields. If you tighten them to much you'll break the hose clamps. I've replaced a bunch of hose clamps in my years of owning my big shots. The big shots are known for breaking the mounts on the heat shields. So if you hear a weird vibration check there.
Extreme HDF Member
Joined: Feb 2015
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From: Galt's Gulch - MI
I'm going to go the opposite way; put the pipes on first. Once done and the pipes are properly aligned and exhaust bolts torqued, put on the heat shields, it's the final thing you do. I've never broken a heat shield clamp on any of my 3 Big Shots Staggered installs... ever... didn't know that was actually even a thing that happens 
Outstanding HDF Member
Joined: Sep 2014
Posts: 2,717
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From: Minnesota
Do you have club fingers or are you nimble?
Are you going to use a nut driver or a small socket and ratchet?
I bought mine second hand and the heat shields where already on, I just installed them like they came no problem.
I did move'm around a bit and because they where already used the clamps didn't work as smoothly as new ones.
Big tip:
Don't just tighten the flange nuts,, there is a torque sequence,, and don't over-tighten, those gaskets are made for a mild crush fit, too tight and you'll have a leak, follow the book like this;
It's a good idea to get all four nuts started and the pipes close to position before you begin the torque process.
Are you going to use a nut driver or a small socket and ratchet?
I bought mine second hand and the heat shields where already on, I just installed them like they came no problem.
I did move'm around a bit and because they where already used the clamps didn't work as smoothly as new ones.
Big tip:
Don't just tighten the flange nuts,, there is a torque sequence,, and don't over-tighten, those gaskets are made for a mild crush fit, too tight and you'll have a leak, follow the book like this;
7. Tighten flange nuts (35), at front cylinder studs as follows:
a. Install lower nut and tighten finger tight.
b. Install upper nut and tighten to 9-18 in-lbs (1-2 Nm).
c. Tighten lower nut to 100-120 in-lbs (11.3-13.6 Nm).
d. Tighten upper nut to 100-120 in-lbs (11.3-13.6 Nm).
8. Tighten flange nuts at rear cylinder studs as follows:
a. Install upper nut and tighten finger tight.
b. Install lower nut and tighten to 9-18 in-lbs (1-2 Nm).
c. Tighten upper nut to 100-120 in-lbs (11.3-13.6 Nm).
d. Tighten lower nut to 100-120 in-lbs (11.3-13.6 Nm).
a. Install lower nut and tighten finger tight.
b. Install upper nut and tighten to 9-18 in-lbs (1-2 Nm).
c. Tighten lower nut to 100-120 in-lbs (11.3-13.6 Nm).
d. Tighten upper nut to 100-120 in-lbs (11.3-13.6 Nm).
8. Tighten flange nuts at rear cylinder studs as follows:
a. Install upper nut and tighten finger tight.
b. Install lower nut and tighten to 9-18 in-lbs (1-2 Nm).
c. Tighten upper nut to 100-120 in-lbs (11.3-13.6 Nm).
d. Tighten lower nut to 100-120 in-lbs (11.3-13.6 Nm).
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6th Gear
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Outstanding HDF Member
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From: Minnesota
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6th Gear
Joined: Aug 2010
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It was a bitch to do by myself i put heat shields on first then pipes might have been easier do itnthe other way but oh well there on now not as loud as my big radius with No baffles but defintely sounds way better
