T-Bolt Clamps On Stock Charge Pipes
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    ST Nation Command Sergeant Major XRJoe's Avatar
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    T-Bolt Clamps On Stock Charge Pipes

    Got a chance to hop under the car today and measure some of the stock couplers and fit a few of my spare t-bolt clamps. In the entire system, you have 8 worm-gear clamps which were all loose on my car.

    Hot side:
    • Turbo Outlet (1) - 2" (Verified)
    • Hard mid-pipe (2) - 2" and 2.25" (Verified; smaller goes on the turbo side)
    • Intercooler (1) - 2.75" (Verified)


    Cold side
    • Intercooler (1) - 2.75" (Verified)
    • Intermediate Pipe (2) - 2.25" and 2.5" (smaller on the charge pipe side)
    • Throttle Body (1) - 2.5"



    I only had spares in the above sizes which I noted as verified where I fit t-bolts. I will be ordering the other sizes and replacing next weekend. Once I verify they fit, I'll update the thread here. I will NOT be replacing the hose clamps on the throttle body or intermediate pipe. If you pull these off you'll notice they have an inner liner which keeps the clamp from digging into the silicone and also spreads the load of the clamp. These are nearly as good as t-bolts and are similar to the style clamps used on other OEM turbo applications like Volvo and Saab:

    AWAB LLC

    I don't know why Ford didn't use these in the rest of the system since they're far superior to the normal clamps fitted in the rest of the system. Also, the working space near the TB is TIGHT. Fitting a t-bolt in there would be quite a chore and not worth it when looking at the quality of the clamp already there.

    Also, if you look at any hose clamp, the clamping diameter is stamped into the band. The same also applies to t-bolt clamps.

    tbolt_specsheet.jpg

    In short, here's a temporary shopping list that I'll update after I've replaced all of them. I didn't feel comfortable bottoming out my 2.25" clamps on the smaller hoses by the turbo so I left the worm gears there for now. I was able to fit 2.5" clamps on the intercooler, but that was the maximum limit of their clamping. 2.75" will work there and I will be replacing those.

    (2) 2" clamps - Turbo outlet hose
    T Bolt Clamp

    (1) 2.25" clamp - Hard mid pipe to intercooler coupler
    T Bolt

    (2) 2.75" clamps - Intercooler
    Band Clamp

    This does not replace the final 3 couplers in the system which connect the cold side pipe to the adapter right before the TB and the clamp on the TB. If you're feeling adventurous, these should do it, but I have not verified fitment and won't be replacing them on my car:

    (1) 2.25" - Charge pipe to adapter pipe
    T Bolt

    (2) 2.5" - Adapter and TB
    Hose Clamp



    Last edited by XRJoe; 04-10-2013 at 02:19 PM.
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    ST Nation Command Sergeant Major XRJoe's Avatar
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    Quote Originally Posted by brazwewn View Post
    I've got mine on order.

    Wes
    Good deal, please let me know if you find any variances from the sizes I have posted above. I had limited spares and was only able to 100% verify a few with new clamps. The rest are just taken from measurements.
    - Joe

    2013 OW ST
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    ST Nation Sergeant 1st Class
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    Thank you very much

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    Mods should sticky this thread

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    ST Nation Command Sergeant Major XRJoe's Avatar
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    Just ordered the remaining clamps. While I'm not replacing the two on the adapter pipe, I should have spares to verify fitment this weekend for those that would like.

    From browsing the Silicone Intakes site more, it appears if someone sends them a package, they'll add it as an option on their cart for order. Once I can verify all clamps in the system, I'll send them an email so it's easier for people going forward.
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    - Joe

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    ST Nation Command Sergeant Major gottligm06's Avatar
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    This may be a stupid question, but what is instigating these changes??

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    ST Nation Officer Enlist blackbird's Avatar
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    Good info and likely a wise upgrade, especially for those running calibration/tunes resulting in more boost than stock. I'd imagine cost was a key factor for using regular worm gear clamps but you'd think having to pay out on warranty work for potential boost leak issues would have mitigated the cost. I was somewhat surprised and impressed with GM on their 2.0L turbo Ecotec running as much heat shielding wrap on underhood wiring and vacuum pieces as well as constant tension T-bolt clamps on the pressurized plumbing of the intake tract. I'm sure Ford's engineering was deemed adequate manufacturing costs do play a big part.

    For those trying to track down T-bolt or constant tension T-bolt clamps (which as their name implies uses a spring behind the nut to maintain a constant clamping force) my local industrial supply warehouse usually has good prices but you can also order them online from places like McMaster-Carr, Grainger (they usually require bulk quantity purchases and a business account), or Fastenal (who like Grainger also have storefronts in many areas). I've also had good luck in the past finding specialty clamps at local hose fitting and supply/manufacturers.
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    ST Nation Command Sergeant Major XRJoe's Avatar
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    Good info, thanks Eric. For many people, especially on stock tunes, just tightening the hose clamps may be enough. All the piping and IC outlets under the car are bead rolled and ribbed. My hose clamps were very loose and I'm sure others are as well. I have no doubt a simple tightening and verification for the first couple of oil changes would be all you need. I prefer t-bolts (the ones from Silicone Intakes use a nylock, achieving the same goal of the constant tension clamps) but it's really personal preference.

    Many tractor/industrial supply places have some neat stuff for us automotive people. Good clamps like you mentioned and also a wealth of AN/NPT fittings, braided and kevlar hose, etc.

    Quote Originally Posted by gottligm06 View Post
    This may be a stupid question, but what is instigating these changes??
    Many people have had couplers blow off charge pipes under the car. This is mainly due to QC issues where the clamps aren't tight. Worm gears are the cheapest kind of clamp you can use and offer uneven clamp load. When properly tightened at stock boost levels, they're probably fine. I prefer the piece of mind of t-bolts.
    - Joe

    2013 OW ST
    1985 Merkur XR4Ti

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