DIY Individual Throttle Body Setup.

Dem_z · Dec 21, 2006, 09:36 PM

Done on a Honda Engine, but concept is exactly the same. I think it's a worth wild to post and fairly easy to do with some adventure.

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Starting off with a set of 2001 Suzuki GSX-R Throttle bodies. I picked up this set on ebay for very cheap! 50 bucks. The spacing looked about right, I think it was about 80mm, perfect for alignment on the B-series head.

Measureing at 42mm @ the butterflys and tapers to a 45mm (which also had secondary butterflys that were taken out).

The stock manifold was chopped off slightly after the fuel rail mounts, I then had 1 1/2 inch long aluminum runners welded on (1.75od) After the welded I had the manifold surfaced on both sides, and threw a chanfer on the lips of each runner. (75 dollars weld/machine work)

Here are the cheap *** velocity stacks I got on ebay, they were 35 bucks. used some small machine screws to fasten them down. Looks kinda cheezy, but they do the job.

These are the silicone couplers that attach the Throttle bodies to the intake manifold. Sounds kinda half *** huh? well the factory Suzuki ITB's are this way, and most other bikes too! And after attaching them they were very sturdy. I used Napa bulk Silicone hose, with some hose clamps. (20 bucks from Napa)

The Cover shield that hides the linkage and other stuff, just cosmetic.

The factory ITB Fuel injector bungs were JB welded shut, except for the last one which has my brake booster port coming out. You can also see the map sensor signal lines, each port all T's into one and goes to the map sensor.

Thought it looked long? so did I, but after measureing up with the stock manifold, I felt a bit better, I thought for sure the stacks would be touching the firewall, but its actually just a bit shorter than the stock manifold.

The TPS situation, well the Suzuki tps had a way differant range than the stock honda one, I tried to make it work, but it just wasnt happening, So the stock honda one had to be modified to fit somehow.

First I made a baseplate with a hole saw and some scrap aluminum. This is on the backside of the shaft (driverside)

The Brass fitting, was bored out to be a custom bushing for the shaft.

The Shaft is actually a honda throttle body shaft cut down about 1/4

Now for mounting, I used a piece of PVC pipe to space out the tps, so it could mount solid.

Hoggered out the holes on the base plate a bit, so I could get a good amount of adjustment.

Used some extra long machine screws to mount it down

All mounted down, Its very secure and pretty easy to adjust.

Now setting the TPS up in the correct range. Stock TPS setting @ closed .4 - .5v

Stock setting WOT about 4.5v

Best I could get the ITB TPS was .6 @ closed

and 4.4 @ WOT

The throttle linkage was alot easier than I thought! I used an extra throttle bracket from a D16a6 intake manifold, and it fit right off the backside perfect!

This kinda pissed me off, I mounted the TPS upside down, it was hitting the master cylinder. So I had to rotate it, and re-adjust it.

Overall, for a couple hundred bucks it was well worth it, it took a little bit to get running, the idle was pretty easy, a nice 1100-1200rpms. It sounds pretty interesting too, especially when vtec kicks in.

Source

Dem_z · Dec 21, 2006, 09:41 PM

This is not quiet DIY, I think the DIY should be removed... I always mess up subject titles.

fromWRXtoEVO · Dec 21, 2006, 09:51 PM

Good job

Dem_z · Dec 21, 2006, 09:52 PM

This is in the lancer forum... For NA engines. The project doesn't take that long, but it's a lot longer than just slapping a GT35R on. No worries pimp, the gains are smaller, but race NA engines just has that feel that turbos can never match.

Blacksheepdj · Dec 22, 2006, 06:42 AM

Wow. The man's a damn genius. If I had the time/money...

SLVROZ_03 · Dec 22, 2006, 07:08 AM

Okay, I'm confused... Was this supposed to be used on a Lancer? or were you just showing us how easy it is to set it up on a car in general? DIY ITB on Honda's just isn't new, but still a congrats are in order...

Blacksheepdj · Dec 22, 2006, 08:44 AM

Quote:

Originally Posted by SLVROZ_03

Okay, I'm confused... Was this supposed to be used on a Lancer? or were you just showing us how easy it is to set it up on a car in general? DIY ITB on Honda's just isn't new, but still a congrats are in order...

Just a general guide.

Mirage2.0 · Dec 22, 2006, 09:09 PM

Yea but we need stand-alone too.

Dem_z · Dec 22, 2006, 10:44 PM

Yup, or some piggy tricks maybe?...

555R · Dec 22, 2006, 10:58 PM

you coulda made it a bit easier if u bought my Honda 929 throttles
the TPS plugs right in
and the voltage range is the same for any other honda acura

DemisedGabe · Dec 23, 2006, 10:26 AM

interesting.

SnapDragun · May 17, 2007, 01:58 PM

I know this is like grave digging to ressurrect a thread but did anyone ever try this on a lancer?

ambystom01 · May 17, 2007, 02:09 PM

Nope otherwise you'd think there would be a thread on it.

DRFTKNGG · May 17, 2007, 02:20 PM

I bet they sound awsome WOT!

blaze_125 · May 18, 2007, 06:22 AM

Quote:

Originally Posted by SnapDragun

I know this is like grave digging to ressurrect a thread but did anyone ever try this on a lancer?

RPW at some point was supposed to come out with something similar, then they stepped down to a dual TB setup. We have yet to see someone with a functional setup.

What worries me with the setup described here, is the lack of air filters.