GM TPI RESTORATION & BORING SERVICE
NO REFUNDS 90 Day Warranty from date of delivery
Please understand build times are 3 weeks
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Services are for the TPI and LT1 throttle bodies.
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The services listed below are performed on your core.
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Shipping is an additional cost ~$18.00 USPS Medium flat rate box to U.S, only. International is at an extra cost.
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Please see warranty for information regarding the coverage and overhauling of your core.
SERVICE #1
TPI BORING SERVICE
Expanded boring service of your TPI (base unit only) Please send your TPS with your unit.
This is the most comprehensive performance boring service ever offered for the TPI community. The following is a detailed description of what we do to make your TPI throttle body outperform any other that has been on the market. We use a Bridgeport milling machine and Criterion boring head with carbide inserts to perform the boring process.
Restoration and Boring Service Description:
1. When your unit arrives we fully inspect them prior to disassembly. We bag and tag your parts.
2. Units are completely disassembled and ultrasonically cleaned.
3. All parts are glass-bead blasted. Threads are cleaned/chased and repaired if necessary. All openings are cleaned with an appropriate size round stainless brush including vacuum ports.
4. Throttle shaft is thinned on the bottom as well as opened up on the blade seat surface to accommodate the larger blades.
5. Shafts are drilled and tapped for a stainless button head Torx-Plus screw
6. Next step is a multi-step boring process to open up each bore to the exact dimensions specified in your order. This multi-step boring allows us to provide you with the most accurate bore dimensions and the smoothest bores possible.
7. Each base is installed in a custom fixture to resurface the bottom. We use a 2.5" Kennametal indexable facemill for this process.
8. We now debur and/or chamfer all areas that have been resurfaced or bored.
9. Next we perform a multi-step reaming process on the throttle shaft bores. This allows us to achieve an accurate reaming of the bores to fit the oil-impregnated bronze bushings.
10. Installation of the bushings is next with a high quality retaining compound. A 24 hour dry time is required before further handling of the unit is done.
11. Shaft and spring are now painted/coated with an MRO high-solids chemical resistant paint.
Assembly:
1. Installation of shaft and spring is next. Custom laser cut 6061-T6 blades are installed and stainless Torx Plus screws are secured with a permanent LocTite. These blades have been anodized and laser-etched.
2. Blade angle and gap is set in each bore to insure the closet possible fit and an approximate idle of 725rpm
3. Installation of your TPS is now performed and voltage is set to to factory specs.
4. We now install your top plate cover with a new gasket and stainless socket cap screws
5. Next, is the installation of your IAC/Water housing with a new .058" thick gasket and stainless socket cap screws
6. Unit is now complete and ready for bench testing and final inspection.
7. This service comes with our famous 54mm .125" Nitrile Buna-n rubber base flange gasket.
Price is $300.00 plus shipping of $18.00
SERVICE #2
Same as Service #1, but no boring and no custom cut blades.
Price is $200.00 plus shipping of $18.00