36mm Individual Throttle bodies

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perfectchoicemotorsports
Posts: 324
Joined: 17 Apr 2004 20:27

36mm Individual Throttle bodies

Postby perfectchoicemotorsports » 06 May 2005 15:33

Hey Guys been a while since I've been on!

I'm putting together these kits if any one is interested!

Supplied Retail Datsun L20B IDTB
Yes ECU - 2drv, PI
Yes Harness
Yes IAC Mounting kit for F4i TB's
Yes Manifold
Yes Throttle Cable
Yes Fuel Pump
Yes Fuel Line & parts
Yes Software
Yes Fuel Filter & parts
Yes Sensor Kit (CTS Only)
Yes O2 Sensor
Yes IAC Motor
Yes Injectors
Yes Throttle body Clamps an sleeves


Total $1,233.00
Optional $195.00 Quick Tuner

$1,428.00
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perfectchoicemotorsports
Posts: 324
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Postby perfectchoicemotorsports » 06 May 2005 15:36

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perfectchoicemotorsports
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Postby perfectchoicemotorsports » 06 May 2005 15:41

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perfectchoicemotorsports
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Better View of Wiring harness

Postby perfectchoicemotorsports » 06 May 2005 15:43

Better view of Wiring harness

perfectchoicemotorsports
Posts: 324
Joined: 17 Apr 2004 20:27

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Postby perfectchoicemotorsports » 06 May 2005 15:47

The Throttle Bodies DO NOT come with the Kit, they are Available on Ebay for $100 to $250 bucks, most of them include the Injector, TPS, and MAP wiring harness! The Sensors on the Bike are used in the Kit, which makes it pretty much a plug and play system!

Kevin

perfectchoicemotorsports
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RE: More Pics

Postby perfectchoicemotorsports » 06 May 2005 15:53

ECU comes with a L20B base Program tuned from a Car running a rebuilt engine with a stock head, if you have a ported head, that's what the Hand tuner is for it allows a certian amount of +/- from the MAPPED program I've designed on my buddies car!

If you want more FLOW the Honda 929 Throttle Bodies are 40 or 42mm, the manifold has a 41mm inside Diameter to it! So it will help with flow of the 929 TB's if if if if if! Your engine will support the flow! The 36mm's have more air velocity to them and seem to run lots better on a stock engine!

Head needs to be ported to the Manifold for best results!

Thanks
Kevin

510rob
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RE: More Pics

Postby 510rob » 06 May 2005 18:28

..

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banzai510(hainz)
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RE: More Pics

Postby banzai510(hainz) » 07 May 2005 09:52

http://www.modern-motorsports.com/catal ... 08a323de37

Looks pretty long. What about the master clyinders?

Good luck selling them
Let us know how you do.

perfectchoicemotorsports
Posts: 324
Joined: 17 Apr 2004 20:27

Postby perfectchoicemotorsports » 07 May 2005 13:58

With the 36mm F4i units, the over all length of the runners and Throttle bodies leave plenty of room for the Master Cylinder! This includes using the Modified Stock Air box from the F4i!

Runner length is 11" from end of Manifold to end of Tulip! The tulips for Cylinder 2 & 3 is Shorter than 1 & 4, this helps with the added runner length of cylinders 2 & 3!

See Picture of Manifold mounted in Car!

Kevin
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perfectchoicemotorsports
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Postby perfectchoicemotorsports » 07 May 2005 18:55

Mounted in the Car!

With Honda Air Box mounted!

Kevin
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banzai510(hainz)
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Postby banzai510(hainz) » 08 May 2005 20:20

it looks good. As for reliability over time have you tested that?

But one thing. A fuel injected car should at leasts run a EI distributor I see still using points!!!!

also you staed still need to buy trottle bodies. 1400 then No throttle bodies? Im I missing something?
I think it looks good myself and still can use the stock fuel pump. I dont see the wireing anywhere. Was it completely done and running going by that photo.
what tells the injectors to inject at the right time?

PS Yes its alot of money but if its a completet kit it might not be that bad since dual weber new is about 1000$ or more anyways.
Im a little leary of the rubber spacer(heater hose).
But dont TWM already has something like this ?

perfectchoicemotorsports
Posts: 324
Joined: 17 Apr 2004 20:27

Postby perfectchoicemotorsports » 08 May 2005 21:26

Hey Banzi thanks for the interest and questions.

The Efi ECU, harness, and Software is running on thousnads of applications, and the throttle bodies are the same way with plenty of proven reliability! All we are doing is giving Datsun owners a bolt on kit as an option! What you are seeing is the development of the system as we build and develop it! If you price a TWM Weber throttle body system, they are over a grand by themselves, and if you try to utilize a old set of webers, you have to deal with the mounting issues of the Throttle Position sensor! The Hondo F4i 36mm and 929 42mm have everything included in a nice compact package, IE: Throttle bodies, Fuel Rail, Fuel Pressure Regulator, MAP Sensor, Air Sensor, if you use the stock air box or move the sensor to a custom made air box, TPS, the list of advantages goes on and on, let alone the fact that you can pick these throttle bodies up on Ebay for $100 to $200 bucks!

My EFI system will fire off the Negative side of the Coil! The AI/IL ECU has extra noise filtering for this input and was designed for older car applications such as this! I'm working on an option using a Electronic Distributor to fire the ECU with, as we have an extra ECU input for this as well! We can also use a crank trigger for an input, if you mounted a 7 tooth crank wheel to fire a Standard GM Ignition Module, you could have a wasted spark set-up!

Honestly we are out to make money, were doing the engineering and R&D to make something that looks trick, and works, this is my full time Hobby that's turned into a business! Please take look again at what is provided in the kit and check prices for all the parts, while there is profit there, it is not alot!

Kit will come supplied with a External fuel pump, filter and high pressure fuel Lines to replace the ones in the rear of the car and in the engine bay!

It is not wired in the photo, and is not running as of yet!

The ECU is a Batch fired system, and injector are fired shortly after each spark event! It is not a sequential injection system, but neither were most car systems passing EPA until the mid 90's.

We have also documented the building of a neat Throttle linkage using a hand drill, Hacksaw, and hand grinder, all parts used were found in the HELP section of a local parts store, and Aluminum from Home Depot. It will come with the kit!

Some advantages we see:

1. Manifold and TB's are lighter than Weber/TWM set-up
2. Cost is economical
3. TB's are very Compact.
4. All the main parts for sensors are inluded in the Honda Package
5. Fuel pressure Regulator is built in.

I have ECU, Software, and Harness kits as well, at a very economical price compared to some of the other EFI computers out there!


Hope this helps!

Kevin

perfectchoicemotorsports
Posts: 324
Joined: 17 Apr 2004 20:27

Postby perfectchoicemotorsports » 08 May 2005 21:30

Throttle Linkage conversion idea! Could be used for othe people runnig various other Carbs/EFi systems!

Whats not seen in the Photo is, a Shifter bushing I picked up at a local auto parts store. Where the old throttle linkage goes thru the Aluminum, it now has a nice clean looking bushing!

Kevin
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perfectchoicemotorsports
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Postby perfectchoicemotorsports » 14 May 2005 16:53

It's alive! We ran it today, just setting Idle tuning and getting the kinks worked out of the throttle linkage, fuel leaks stopped, etc.

We did have it idleing at a remarkable 417 RPM, that was the lowest we could get it to run! LOL! :)

Kevin

510rob
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Postby 510rob » 15 May 2005 03:55

are you sure it wasn't 417.264324674rpm?!? (just kidding)


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