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THROTTLE BODY/UPPER PLENUM MODS
I have some photos below from the throttle body project for everyone to see. The throttle body was bored to 62mm up from the stock 58mm and the upper plenum bore was matched.
THROTTLE BODY BEFORE
PHOTOS
Click on photos to see full size!
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THROTTLE BODY AND UPPER PLENUM AFTER PHOTOS
Click on photos to see full size!
Photos below from left to right
First Row
Left: This shows the old throttle blade resting on top of the new
blade to illustrate how much the diameter is increased.
Center: Side view, check out the nice machine work!
Right: Head on view of throttle body, by the way I found a paint
that works great to freshen up these pieces and best of all it holds up! It is
made by Cool It and is originally for their Thermo-Tec exhaust insulating wrap.
I have been using it to paint metal parts and the stuff shines like crazy and
looks great.
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2nd Row
Left: Upper plenum is now matched to bored throttle body and also had
the EGR passage removed.
Right: Underneath photo of upper plenum.
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3rd Row
Left: Throttle body installed, notice the way the IAC is now
mounted! No longer a hassle to take out and clean! I installed BOP
Engineering's ANGLE BOSS to reposition the IAC at an angle that allows you
remove it without disconnecting any other parts! It also allows you to adjust it
easily too! It is machined from aluminum billet and is a trick piece, though a
little pricey at the $65 range. Well worth it in my opinion.
Right: Another photo of the installed TB with the ANGLE BOSS
attached.
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With these modifications you will need to readjust your IAC and TPS settings but this fairly easy to do. The ANGLE BOSS paid for itself when I did this.
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This funny looking plate fixes the air distribution problems the 86-7 Turbo Regals have by redistributing it so all the cylinders receive the same amount of flow. The RJC Power Plate was developed by Jason Cramer these are one of the cheapest mods that delivers the most benefits for a Turbo Regal. While it might look like a restriction, the total amount of space cut out of the plate is more than the throttle body opening. It is an easy installation and the 1/8" plate merely sandwiches between the upper plenum and lower intake manifold. Takes about 30 minutes to install and comes with the 2 gaskets needed. Click on the link or the picture to go to Jason's site for more details. |
3 Inch Up Pipe
Was messing around in the garage and had some extra chrome pipe laying around so I made up a 3" up pipe to match my cold air intake pipes. Previously used a stainless 2.5" up pipe from ATR. I wanted all the pipes to match. Don't know if the 3" pipe will really improve the performance but it sure looks nice. Has a smoother radius than the other pipe so I am sure it won't hurt. I just used some 3" hose with 2.5" sleeves inside them to connect to the intercooler and throttle body. Has held up to repeated 24 lb runs. Click on the pic to see the page on my site that you can buy your own 3" up pipe.
