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Getting this intake manifold back on the 98 LGT. Switched to Blox Racing 65mm stainless manifold studs vs longer bolts required to run the 10mm teflon spacers. Never tried this method nor have I read where someone else has done studs vs bolts in this application. Trying to not ever strip another bolt hole!
Will report back once I've driven the car awhile. It's a low torque bolt, so this method should be just fine. Won't know unless you try.
If this isn't art, I don't know what is...😍
Before vs After
Well rainy season in the bay area has put this project on hold.
Here's Legacy GT's original intake manifold after...
• degreasing/scrubbing/cleaning inside and out best I could
• grinding down casting seams and sharp edges as much as possible
• high output coil pack mounting points fixed
• polishing intake runners (not porting)
• polished and beveled the inside lip of the throttle body opening
• drilled holes in the intake runner's "webbing" for water drainage and possible cooling
I also will be adding these prototype "teflon" 10mm thick intake manifold and throttle body spacers.
Only thing left to do is tape off the holes for the wrinkle red paint job and acquire all the oem o-rings/gaskets/hoses/etc.
Kickass custom intake on a 500 caddy powerplant.
Steinway Auto repair is a Car Repair Shop in Astoria, serving the boros of Queens, Manhattan, Bronx, and Brooklyn since 1997. One of the imp
Walnut blasting is being performed on a BMW 5351. This service was recommended because of carbon buildup on the valves and oily residue on the intake manifold.
Carbon buildup is a common issue on BMWs and mini coopers.
During walnut blasting, walnut shells that are ground up are used to break up the carbon deposits.
Dual Plane Vs Single Plane Intake Manifold
Does it really matter whether there is a dual plane intake manifold or a single plane intake manifold?
Most carburate engines and many aftermarkets injected fuel engines employ one of two basic styles of intake manifolds: a dual-plane intake.
Which is superior in the struggle for intake manifold dominance? It becomes difficult to "plane" with so many options for well-known motors! Let's look at the single-plane vs. dual-plane debate and why you could choose one over the other based on your final aim.
What is s Dual-Plane Intake Manifold?
A split and uneven-height plenum divide the two independent intake manifolds that make up a dual-plane intake manifold. Because the runners are arranged in a circle, the intake cycles of each cylinder are separated by the Rotation of the crankshaft is 180 degrees.
The combination of this spacing and the comparatively lengthy, curved runner lengths required to clear the runners of the opposing group results in a powerful reduced torque. But it also puts a limit on speed above 5,500 rpm. The practical working range can be increased to the 6,000–6,500 rpm range by using a high-rise supplementary inference manifold with greater space for somewhat straighter runners.
What Is A Single-Plane Intake Manifold?
A single-plane intake manifold minimises airflow resistance by having all of The runners of the engine link directly to one single common plenum with the fewest number of bends possible. In each pair's first cylinder, more intake charge is received at low engine speeds at the expense of the pair's second cylinder. Due to this, tuning performance during the switch to idle can be challenging, especially for big cars with moderate "ultimate drive ratios for highways.
Dual Plane Vs Single Plane Intake Manifold
Hardcore tuners can partially solve some single-plane vs. dual-plane problems. For instance, one can experiment with different size carburettors or carburettors with various features. Stagger-jetting can be used on carburettors to make up for issues with fuel and air distribution in various runners.
To improve performance at the top of the dual intake manifold, you may remove a portion of the plenum divider. On the other hand, you may improve a single-plane intake's low-end performance by introducing an aluminium plate that splits the plenum in half (but that limits top-end power).
The most dedicated racers have indeed been known to glue "plenum floor/runner with "popsicle sticks" junction on some single-plane intake manifold to assist in equalising flow. Overall, decreasing the capacity of the intake manifold plenum is equivalent to using a smaller carburettor (and vice versa). There are no free meals in life.
We're hopeful that this information will help you decide what would be best for your car. Contact Total Performance for advice on buying a single-plane intake manifold and benefit from knowledgeable assistance.
Almost there
