Gear up for the N/A Thread

[A20A1]

PART ONE: CHOOSING YOUR INDUCTION METHOD

CARBURETED
1. When well tuned can offer good throttle response.
2. Uses simple tools to maintain and tune.
3. Offers intake air cooling from fuel vaporization
4. Suffers from fuel delivery problems when cold.
5. Suffers from fuel slosh, hard cornering, or steep inclines.
6. Intake manifolds need to be designed to flow fuel
7. Suffers from venturi and booster venturi air restrictions
8. Not self adaptable to big changes in altitude, or large increaese decreases in engine demand.

THROTTLE BODY INJECTION (TBI)
1. Gets rid of any problems the float bowl may cause
2. Gives the user more tunability options then carb
3. Suffers in that it need to flow fuel in the intake manifold, ususally requires carb manifold.
4. The injectors may restrict air flow into the barrels.

FUEL INJECTED
1. For performance fuel economy and lower emissions Fuel Injection is the way to go.
2. Fuel injection does not have to design their intake manifold to flow fuel.
3. Fuel injection does not have to worry about fuel slosh, steep inclines, or hard cornering.
4. Less air restriction then CARB or TBI

INTAKES
- STOCK AIR BOX MODIFICATION
1. The step up from a cold air factory induction air box to a aftermarket induction system may not be as benificial as you might think.
2. The stock air box after the filter may have areas that create turbulent airflow.
a. Reducing turbulent airflow into the intake pipe will be a good improvement, you can intergrate or buy aftermarket stock airboxes that use funnels/air horns after the filter to help reduce tubulence.
3. The stock air box usually has one main restriction prior to the filter inside the box. This restriction is the pipe which draws in cold air from outside the engine bay. For Carburetors most people will flip the lid to get around the restriction, I haven't seen anyone remove the filter lid on an EFI to give the filter full access to the air.
a. Replacing the stock filter can be a good improvement.
b. Removing the restriction prior to the filter and improving air flow to the stock filter can be a good improvement.
c. Reducing hot engine air from reaching the filter by using heat barriers and ducting of cold air to the filter can be a good improvement.
- DEI HEAT SHEILD SHEETS (LINK)
1. Single layer protection, good to shroud off area near battery to keep out hot engine air.
- DEI DUAL LAYER HEAT SHEILD SHEETS (LINK)
1. Dual layer protection for direct surface contact.

- AFTERMARKET INTAKE
1. If aftermarket intake is better suited for your situation take the time to make sure you really are improving air flow.
a. Installing a large intake filter will make sure you don't choke the motor.
b. Inside the large filter you can install a funnel to reduce air flow turbulence.
c. Properly placing the filter and sheiding the pipe from heat sources will unsure you get the most cold air possible.
d. Try to limit the number of bends in the intake pipe, also limit how long the pipes are, use only what you need to get the filter to the cold air source.
2. Pre-Plenum Plenumed Intake pipes or Resonant Intake pipes may have an advantage you might want to look into.
- AEM V2 INTAKE (LINK)

[A20A1]

PART TWO: INDUCTION TUNING

INTAKE MANIFOLD GASKET / SPACER / VENTURIES
- HONDATA HEAT SPACER (LINK)
*** HAS BEEN KNOWN TO WARP
1. Reduces heat transfer from Cylinder Head to Intake Manifold.
2. Made from, PolyTetraFluoroEthylene (P.T.F.E.)
a. Phenolic Resin May be a substitute.
- SPOON VENTULI PLATE (LINK)
1. Modifies Airflow

INTAKE SETUP
INDIVIDUAL THROTTLE BODIES (ITB)
- TODA RACING ITB (LINK)
1. Requires Modification to the flange to fit.
2. Requires Engine Management.
- REDLINE WEBER ITB (LINK)
1. Requires Modification to the flange to fit.
2. Requires Engine Management
- REDLINE WEBER DCOE THROTTLE BODIES (LINK)
1. Requires A20A/B16/B18C5 Weber DCOE Manifold *** Does not require tilt modification ***
2. B16/B18C5 Requires Modification to the flange to fit.
3. Engine Management Available in Kit Form

EXHAUST SETUP
EXHAUST TUNING
- BACKPRESSURE

HEADERS
- PERFORMANCE HEADERS (LINK)

HEAT WRAP
- DEI EXHAUST WRAP (LINK)
1. Retains Heat energy inside exhaust system while reducing heat inside engine bay.

CERAMIC HEAT COATINGS
- SWAIN TECH CERAMIC COATINGS (LINK)
- AIR BORN CERAMIC COATINGS (LINK)
1. Retains Heat energy inside exhaust system while reducing heat inside engine bay.
2. Provides durable protection.
3. Looks nicer the header wrap.

[A20A1]

PART THREE: LONG BLOCK TUNING

CYLINDER HEAD GASKET
- HEADGASKET.COM
1. Maker of copper head gaskets / Variable thickness to raise or lower deck height, this effects Compression Ratio (C/R)
a. Naturally Aspirated (N/A) Motors may use a thinnner Cylinder Head Gasket to raise the Compression Ratio (C/R)
b. Turbo, Supercharged, Nitrous Oxide (N20) Motors may use a thicker Cylinder Head Gasket to lower the Compression Ratio (C/R)


CYLINDER HEAD

BLOCK

[A20A1]

PART FOUR: IGNITION AND FUEL

FUEL SYSTEM

IGNITION SYSTEM
- DEI SPARK PLUG WIRE BOOTS (LINK)

From my personal experience, these are not worth it unless your wires are in near or direct contact with hot metal.

[A20A1]

I'm trying to pre organize the thread so that relevent information and images will always be at the forefront and you wont have to shift thru pages of questions and replies to find what you're looking for, which is to build your NA motor.

This isn't final so please bear with me... I'll need about 4 posts so plese don't make any post untill you see 4 of mine. I'll work out the table of contents later.

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Okay now that thats done let's get organized.

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Okay it's all set, post at will. I'll add you info in quote form to the spaces above... if you have pics please send them to [email protected] since I would like to have them resized to about the same size before i start posting them... post anything regaurding head porting, overbore, places to buy pistons cam regrinds... whatever is applicable to NA motors which is a lot but still look above and try and fit it in to one of the categories. Thanks

oh and don't worry about reposting info from another thread... but if you'd rather link everyone to the info thats fine too.
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[Ludi Mali]

Just found this thread and thought I'd bring it back incase anyone wishes to share.

[JFreddy]

I cant click on the links? for fuel injection and block and etc.

[A20A1]

I dunno if I collected the info or not, it's supposed to be filled with links and pics and write-ups, just like how I was doing for the turbo faq.

I cant click on the links? for fuel injection and block and etc.

EDIT: Now I remember... I left blank spaces... the idea is to keep all the info compiled on the first four posts... that way you don't need to look through all the posts to find what you're looking for. Anywho I haven't gotten any responses yet. I'll try and fill in what I can though.