Step 11 - Installing the Intercooler Pipes
 

The Intercooler pipes are made from 304 stainless steel with a beautiful brushed finish. The Intercooler pipes are distinctly different. There are six or seven silicone hoses and clamps depending on the turbo model year. The hump hose has the bulge in it to allow more flexing from the torque of the engine. Soapy water simplifies the installation of the silicone hoses when sliding them onto the pipes, turbo and intake. To protect the silicone hoses we specify only liner-type clamps that won't tear the silicone surfaces and weaken the integrity of the silicone hoses. If you need replacement clamps, contact Track Dog Racing.

11.1 Installing The Lower Radiator Shield

  • Lift up the hood latch and slide the stainless steel panel, (brushed side up) into place over the bolts on the two ends as shown in Photos 11-A and 11-B.
     
  • Install the nylon nut over the stainless steel panel. This nut holds the stainless steel panel down and is also a spacer for the black aluminum radiator panel as shown in Photo 11-C. Do not over-tighten; it takes little effort to fasten securely.
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Photo 11-A: Hold latch up Photo 11-B: Install panel over bolt Photo 11-C: Install nylon nut

11.2 Installing The Link Temperature Sensor

Hardware Package 94FM for 94-97 Models

On turbo kits using the FM Link temperature sensor you will need to assemble and modify the idle air hose. On '90-93 model you can reuse the factory idle air hose.

  • On '90-93 models use the factory hose and modify for the Link temperature sensor as shown in Photo 11-D.
  • Dry fit the hose configuration before you modify the hose for the sensor wire exit. Use soapy water on the hoses to help installation and simplify rotation. Photos 11-E and 11-F show a typical mounting configuration.
  • Cut a small hole and pull the wires through. Use silicone to seal the wire exit as shown in Photo 11-F. Try to penetrate the hole with the silicone so it will have a good seal. Be sure to let the silicone seal dry before you add boost.
  • Use the pipe clamps provided and install as shown in Photo 11-G.
Photo 11-D: FM sensor hose kit '90-93 model Photo 11-E: FM sensor hose kit '94-97 model Photo 11-F: Sensor wire seal
   
Photo 11-G: Sensor hose kit installed    

11.3 Installing The Intercooler Pipes on the FM Turbo

The '90-93 turbo model uses a different intake pipe, but mounts similar to the '94-97 model. Because of less clearances around the radiator hose the blow-off valve is attached to the turbo outlet pipe. To make fitting of the silicone hoses to the parts easier, spray a little soapy water onto the hose connection before installing. The soapy water also acts as a sealant when it dries.

  • There are two brass fittings, both using an 1/8" NPT thread. The 3/8" barbed end attaches to the turbo inlet elbow as shown in Photo 11-H. The valve cover hose connects to this fitting. If you are using a oil catch can, recommended, use a plug (supplied) in place of the barbed fitting to seal off the hole. The 1/8" barbed fitting attaches to the turbo outlet pipe as shown in Photo 11-I. Some turbos come with a waste gate hose fitting on the housing if so use a plug in place of the barb fitting. The customer supplied waste gate hose connects to this fitting. Use Lock-Tit on the thread to seal the barb or plug fittings.
  • To simplify installation and removal of the connector hoses on the Intercooler, mount the clamps so that the tightening bolt are on the front side as shown in Photo 11-J. This will give you more clearance with a nut driver (recommended for more torque) or screwdriver. To aid in a tight connection use a ratchet with a 5/16" socket.
     
  • Install the hump hoses to the Intercooler using the medium size pipe clamps supplied as shown in Photo 11-J. Slide the hose down so the bottom of the hump is at the top of the Intercooler pipe.  Ideally you want the Intercooler pipe to mount just above the hump and the Intercooler to mount just below the hump to allow flexing in between. Tighten the bottom clamp. Place another clamp onto the top of the silicone hose in the same direction.
     
  • Install the intake pipe into the lower connector hose. Install the 2 1/2" silicone connector hose on to the Intercooler pipe at the top as shown in Photo 11-L (Pictures are from the first prototype and are not the color supplied). Use the larger clamps for mounting the top connector hose.
  • Slide the connector hose over the throttle body. Tighten only the clamp on the throttle body securely. Tighten the clamp on the pipe lightly so you can align the pipes. We will finish the alignment and tightening in Section 11.5.
  • Install the turbo intake pipe using a 2 1/2" to 2 1/4" transition silicone hose with a medium size hose clamp on the turbo side and a larger clamp on the pipe side. Position as need and install the customer supplied air filter.
  • On the '94-97 model install the turbo outlet pipe into the lower silicone hose on the Intercooler. Take the 2" straight connector hose and slide it on the Intercooler pipe at the turbo end. Use the medium clamps for mounting the top connector hose as shown in Photo 11-M.
  • On the '90-93 model their is a hump hose that goes on the turbo outlet pipe to add additional length and flex to the pipe. Install the 2" hump hose between the two pipes using the clamps supplied as shown in Photo 11-N. Take the 2" straight connector hose and slide it on the Intercooler pipe at the turbo end. Use the medium clamps for mounting the top connector hose.
     
  • Slide the connector hose about halfway over the turbo outlet. Tighten only the clamp on the turbo securely. Tighten the clamp on the pipe lightly so you can align the pipes.
  • Lightly tighten both of the clamps on the Intercooler side of the pipes above the hump hose. The bottom clamp on the hump hose should be securely tightened.

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Photo 11-H: 3/8" barb fitting for valve cover hose Photo 11-I: 1/8" barb fitting for waste gate hose Photo 11-J: Install hump hose on to intercooler
 
Photo 11-K: Rotate I/C pipe into position, check clearances Photo 11-L: Intake side with customer supplied BOV Photo 11-M: Turbo Inlet and outlet pipes
   
Photo 11-N: '90-93 turbo outlet pipe with silicone fittings    

 

11.4 Installing The Intercooler Pipes on the Greddy Turbo

The Greddy setup comes with 4 pipes on the turbo side and 1 pipe for the intake side. To make fitting of the silicone hoses to the parts easier, spray a little soapy water onto the hose connection before installing. The soapy water also acts as a sealant when it dries.

Hardware Package - Greddy

  • Install the 3/8" brass barb fitting into the turbo intake pipe as shown in Photo 11-W.The valve cover hose connects to this fitting. If you are using a oil catch can, recommended, use a plug (supplied) in place of the barbed fitting to seal off the hole. Use Lock-Tit on the thread to seal the barb or plug fitting.
  • To simplify installation and removal of the connector hoses on the Intercooler, mount the clamps so that the tightening bolt are on the front side as shown in Photo 11-P. This will give you more clearance with a nut driver (recommended for more torque) or screwdriver. To aid in a tight connection use a ratchet with a 5/16" socket.
     
  • Install the hump hoses to the Intercooler using the medium size pipe clamps supplied as shown in Photo 11-P. Slide the hose down so the bottom of the hump is at the top of the Intercooler pipe.  Ideally you want the Intercooler pipe to mount just above the hump and the Intercooler to mount just below the hump to allow flexing in between. Tighten the bottom clamp. Place another clamp onto the top of the silicone hose in the same direction.
  • Install the intake pipe into the lower connector hose. Install the 2 1/2" silicone connector hose on to the Intercooler pipe at the top as shown in Photo 11-Q. Use the larger clamps for mounting the top connector hose.
  • Slide the connector hose over the throttle body. Tighten only the clamp on the throttle body securely. Tighten the clamp on the pipe lightly so you can align the pipes. We will finish the alignment and tightening in Section 11.5.
  • Use the factory idle air hose as shown in Photo 11-Q and modify as required.
  • Install the supplied mounting bracket to the airflow unit as shown in Photo 11-S using the supplied 12.5 mm bolts and washers. Mount on the outside of the airflow bracket.
  • Using the two 1/2" nylon spacers and supplied bolt attach the airflow and bracket to the shock tower support as shown in Photo 11-T. Tighten down to the point you can still move the airflow unit for alignment.
  • Install the 2 3/4" silicone 90 deg. hose to the airflow unit with a clamp. Loosely tighten the clamp until all adjustments are complete.
  • Slide on a 2 1/2" silicone hose with clamps over the 90 deg. turbo intake pipe with a little bit of soapy water. Add some soapy water to the 2 3/4" silicone fitting as well. Insert the pipe as shown in Photo 11-W. Adjust as necessary and lightly tighten until complete.
  • Using the factory nuts on the airflow unit install the new 2 3/4" air filter pipe as shown in Photo 11-X. Install the new air filter to the pipe and tighten down.
  • The turbo outlet pipes consist of two parts, either one can be installed first. Attach the supplied 2" straight silicone hose with clamps to the turbo outlet. Attach the curved pipe on to the turbo outlet as shown in Photo 11-Y.

NOTE: The turbo may require you to rotate it some to align the Intercooler pipes properly. Usually you can twist the turbo by hand for this adjustment, but you may require a rubber mallet or other soft material to aid in the movement.

  • Attach the 2" silicone hump hose to the other end of the curved pipe. Use soapy water to help aid the fitting.
  • Attach the other turbo outlet pipe to the Intercooler and to the curved pipe as shown in Photo 11-Y. Be sure to leave at least a 1/4" gap between these two pipes or about the distance of the hump section of the silicone hose. Tighten loosely until ready to align. See Section 11.5 on aligning the Intercooler pipes.
  • Install customer supplied BOV using supplied silicone hose and clamps as shown in Photo 11-Z. Attach a vacuum hose to the intake manifold.
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Photo 11-O: Greddy intercooler pipes Photo 11-P: Hump hose attached to intercooler Photo 11-Q: Intake pipe and idle air hose fitting
Photo 11-R: Airflow bracket Photo 11-S: Bracket attached to airflow unit Photo 11-T: Bracket attached to fender with spacer
Photo 11-U: Attach airflow unit bracket to chassis Photo 11-V: 90 deg. silicone hose attached to airflow unit Photo 11-W: 90 deg. SS pipe attached to turbo inlet with barb fitting
Photo 11-X: Air filter pipe attached to airflow unit Photo 11-Y: Turbo outlet pipe Photo 11-Z: Customer supplied BOV attached to turbo outlet pipe

11.5 Installing The Radiator Shield And Aligning The Intercooler Pipes

This next step is for all intercooler models.

Hardware Package A-1

  • Locate the L bracket and hardware from package A-1 as shown in Photo 11-AA.
  • Insert the nylon spacer into the L bracket as shown in Photo 11-BB, if it is not already installed.
  • Remove the 10mm bolt from the top of the radiator bracket and install the L bracket using the supplied 10 x 12.5mm bolt and washer as shown in Photo 11-CC.
  • Mount the black aluminum radiator shield over the pipes and to the 4 studs. It is not necessary to install the acorn nuts while aligning.
  • Check the fit between the shield and the Intercooler pipes to make sure the Intercooler pipes have good clearance and are not making contact with the shield or the frame area as shown in Photo 11-DD. If you can see any frame area as shown in Photo 11-DD through the pipe opening, remove the metal. Take caution to not get any metal shavings into the Intercooler.
  • To allow flexing, try to keep a minimum of 1/4" of space between the pipe and the shield.
     
  • Hood clearance is close on the turbo side. Start by pressing the pipe down into the intercooler and feel for about a 1/4" of space where the pipe and the intercooler meet. Align the pipe to have good air gap around the shield as shown in Photo 11-DD and then tighten the top clamp. The top clamp will hold the pipe in alignment. Use a nut driver for more torque.
  • Align and tighten down the intake side using the same method and keeping a good air gap as shown in Photo 11-EE.
     
  • Remove the aluminum radiator shield and without moving the pipes securely tighten the lower Intercooler hose clamps.
  • Check the radiator shield again and retighten all of the hose clamps.
     
  • Securely tighten the aluminum radiator shield using the stainless steel washer and acorn nuts supplied from package A-1.
  • You should have good hood clearance and air gap around the radiator shield if done properly, but you might want to do a hood clearance check as shown below in Section 11-6.
 
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Photo 11-AA: Radiator bracket hardware Photo 11-BB: L bracket with nylon insert Photo 11-CC: L bracket installed on radiator
Photo 11-DD: Check clearance and modify cut-out if necessary Photo 11-EE: Check clearance and modify cut-out if necessary Photo 11-FF: With proper clearance on both sides

11-6 Checking For Clearance On The Intercooler Pipes

Hood clearance may or may not be an issue, but it would not hurt to check. If you have stock motor mounts you will have excess engine movement that WILL cause the pipes to touch the hood. Be sure to replace the motor mounts with our Mazda Speed heavy-duty motor mounts, as they will reduce engine movement.

  • Photos below show how to check for hood clearance. Play-Do is inexpensive and available from grocery stores, drug stores and department stores for about $2.00.
  • Place the Play-Do on the pipes and close the hood all the way as shown in Photo 11-GG.
  • Look were the hood presses into the the Play-Do as shown in Photo 11-HH. The hood brace makes contact with the Play-Do.
  • Carefully pull the Play-Do off the pipe and look at the thickness. Ideally we would like to see a minimum of a 1/4" as shown in Photo 11-JJ. Keep in mind as the engine torques toward the passenger side the pipes will move out from under the hood brace.
  • If necessary, re-adjust the pipes for more hood clearance as shown in Section 11.4.
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Photo 11-GG: Play-Do on pipe to check hood clearance Photo 11-HH: Look were the hood presses into the Play-Do Photo 11-JJ: Check thickness of Play-Do

Next - Step 12: Installing The Lower Radiator Panels

Step 1: Removal Of Factory Parts Step 8: Installing The Power Steering Cooler
Step 2: Modifying The Radiator Brackets Step 9: Installing The Radiator
Step 3: Modifying The Radiator Cross Member Step 10: Installing The A/C Evaporator Coil To The Radiator
Step 4: Installing The I/C Mounting Support Panels Step 11: Installing The Intercooler Pipes
Step 5: Modifying The Evaporator Canister Step 12: Installing The Lower Radiator Panels
Step 6: Installing The Upper Radiator Shroud Panels Step 13: The Final Adjustments
Step 7: Installing The Intercooler Index: Introduction

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