I am looking to do the coolant bypass on my B16a. I'm in FL, so I don't really have to worry about freezing temps, so I want to go ahead and do it. Can anyone explain to me in simple terms on what to do, and any pics would be helpful.
Thanks,

jB

 

Anyone? I checked a couple of pages out, but they seem directed for the ITR intake manifolds. They all suggest how to do it with taking off the whole intake manifold, but I REALLY don't want to do that unless I have to. Can anyone explain how to do it without having to take off the manifold?

jB

 

Here's what I did on my B16a http://homepages.paradise.net.nz/asmsbm/tb_bypass.htm

 

Lyonel,

Did you just bypass the TB, or the IACV also? I am doing it without taking off my manifold, so bear with me.

I would connect this hose:


Back of the throttle body

to

this hose


Front of the throttle body

Is that correct?

And then, to bypass the IACV, just connect the hose (from head) going in to the IACV to the hose coming out of the IACV going back in to the head (On the other side, that would normally go out of the TB and back in to the head).

Right?

jB

 

I just bypassed the TB and left the coolant hoses going into the IACV. In the 2nd pic, leave that hose alone which going into your FITV. You want to route a longer bypass hose from the IACV spigot to the spigot on the head.

To bypass the IACV route a bypass hose from the thermostat housing to the spigot on head.

 

Ok. I just wanted to make sure...

1. The thermostat housing connects to the bottom of the FITV when the engine is stock. So I can take the hose out of the bottom of the FITV and connect it to the plug on the head for the bypass.
2. The hose coming from the steel pipe goes to the back of the IACV. I just take the hose out of the back of the IACV, extend it, and plug it in to the nipple on the intake manifold.

Right?

jB

 

Also, what happens if I don't plug the vacuum holes that need to be plugged? Is it going to affect starting/ideling of the car or is it ok?

jB

 

1. Yes you can. In effect you are bypassing the FITV.

2. Yup, u got it.

The caps helps prevent crap getting into the tubes, they aren't necessary... i just like it neat and tidy