i have a few questions about ITB's and i was wondering if anyone knew a website where all of my questions could be answered? thanx i cant find anything useful about the design , help me out plz

 

What - specifically - are you looking for? There is a LOT of information about ITBs on this forum.

You can also find info on the Hayward, TWM and Jenvey sites.

 

Probably the best place to ask them would be here. I have tried searching for ITB info, tuning info on Honda ITB's, etc...most of my google searches led me to HT links in the all motor forums.

 

looking for something like this?:
http://www.team-integra.net/sections...?ArticleID=484

 

yes! perfect!

 

good info

 

i agree

 

That is were I started doing the research for my build. They also have very useful information on exhaust & header design.

 

What do you want to know?

 

The best runnner length bore dia. The basics

 

Also I want to know how reliable they could be on a daily drivEr.

 

There are production vehicles that utilize individual throttle bodies with out a problem. Honda Beat would be one of them. IIRC both Toyota & BMW use them in a production car or two as well.

It all comes down to what application the engine and ITBs are designed and tuned for. Your probably not going to want a 8-10,000 rpm, high lift cam engine running ITBs for stop and go traffic. Unless you like sitting at the lights with a high or bouncing idle. I've been in a few cars with crappy idle characteristics. They are fun for a while, but it gets old quick. A mild idle lope is bearable for me now. I'm getting older

 

^^^ yep the AE86's had itb's and the 80's m3 had itb's too

 

BMW S38 engine



Sweet I6 w/Individual throttle valves, aka ITBs.

 

Nice info planning on making custom itbs for a gsr and a sohc z6 both high compression . Thanks for the info

 

Ive made custom itb's for a single cam and for my b16 - fun project and fun to drive afterwards. if you drive in traffic daily its kind of a PITA in my opinion, but fun as a weekend thing or if your daily ride doesnt have lots of traffic.

 

How was the gas mileage with the itb's. I've been contemplating building my own and hear every one bitch about it, but never got a point of view from some one that had them?

And why are they pita in traffic?. I've got a bike and no problem with that in traffic.

 

I think gas milage is based on tuning of the itbs

 

yeah i have been playing with the idea of custom itbs for my z6. does anone have a good diy guide for this. i would much appreciate it

 

Never had first hand experience yet, but from what I find online is that a lot of people who have never done it like to bitch and spread "myths" that ITB's are impossible to tune. People who have them seem to enjoy them, and say that it's not hard to tune if you have the right tuner. Too much hearsay online, not enough reliable sources for facts IMO. It also depends on the climate of where you are, if you have very humid fluxuating weather, I can see how tuning a car with ITB's can be a PITA.

 

hit it right on the head.