I have a b18c5/gsr throttle body I'm putting on my d16z6 intake manifold. the d16 throttle body has a fitting for a line to attach, but the gsr tb doesnt. Is there a reason for this? Do i need one there? the bottom of the gsr tb has two fittings as does the d16, but the gsr just doesnt have the fitv

 

anybody?

 

Maybe that's for the EVAP purge valve? Different years, it was either on the TB or on the manifold. It depends on the model-year of the engines. Just saying B18C5 & D16Z6 isn't enough information.

 

I see. What does this valve do? is it like the fitv/iacv in that it can be "cut" out of the system without a problem? Is it something I need?

the d16z6 throttle body is off of a 1993 and the b18c5 is from a 1997

 

No you don't need it...I've swapped TB's that don't have FITV that used to have them and they worked fine.

 

i dont need the top line? what do i hook that line up to then? just let it be and get rid of it? If i confused you, this isn't the fitv, but this throttle body doesnt have an fitv

 

You got a few different things going on here...

FITV:
Older cars have an FITV underneath the TB. Newer cars have that function built-into the IACV on the manifold. If your IACV is older, it expects to work together with an FITV. Haphazard combinations of years isn't always good.
A '97 B18C5 doesn't have a FITV, so the '97 IACV includes the function of the FITV. Your '93 throttlebody should have had an FITV. I don't know whether that's the fitting you originally asked about? I was going to look at parts drawings, but I don't know what car to look up - what car does your D16Z6 come from?

EVAP:
(if that's really the line you were originally talking about?)
This is the charcoal canister which allows the fuel tank to vent. There's a vent line coming from the top of the fuel tank, going to the canister. That prevents your gas tank from building up pressure when the car's parked in July. When the engine is running, it draws a small amount of air back thru this canister to burn the fuel that's stored in the charcoal. Some years this 'EVAP purge line' is located on the TB, some years it's on the manifold. You'll want it to be hooked up somewhere.



Modified by JimBlake at 12:42 PM 3/9/2007

 

My bad....I misread your thread. He is absolutely correct.....woooohooo


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JimBlake &raquo;</TD></TR><TR><TD CLASS="quote">You got a few different things going on here...

FITV:
Older cars have an FITV underneath the TB. Newer cars have that function built-into the IACV on the manifold. If your IACV is older, it expects to work together with an FITV. Haphazard combinations of years isn't always good.

EVAP:
(if that's really the line you were originally talking about?)
This is the charcoal canister which allows the fuel tank to vent. There's a vent line coming from the top of the fuel tank, going to the canister. That prevents your gas tank from building up pressure when the car's parked in July. When the engine is running, it draws a small amount of air back thru this canister to burn the fuel that's stored in the charcoal. Some years this 'EVAP purge line' is located on the TB, some years it's on the manifold. You'll want it to be hooked up somewhere.</TD></TR></TABLE>

 

Here's a '97 Type-R throttlebody.

Are you talking about that hose nipple/elbow coming off the bottom in this picture? That's for a coolant hose going to the IACV. If your IACV has all of it's coolant plumbing intact, maybe you don't need it. But be aware of coolant passageways between the IM & the TB.

 

Here's a '93 DelSol Si

The EVAP purge valve is #17, so that's not it. You PM'd me saying it's left of the MAP sensor, on top of the TB. I can't tell from these what that is, & a photo probably won't help me, since I don't have any of the car's we're talking about. I couldn't find a good picture to show anything hooked up to that area.

 

its really hard to see in that pic, but its to the left of the map sensor. its a small, 45 degree bung. You can see it in that pic if you look closely. A hose is attached to it

 

if its about the width of a pencil its prob the evap line .. u can eliminate that all if u choose to.. no harm will be done.. just block the fitting on the TB and stuff.. let the pressure line from the tank open though.. the rubber one off the firewall .

 

finally got a chance to get near my car when it was daylight...here's some pics of the original throttle body and where the line goes to. Can I just leave this out? the gsr throttle body doesnt have anything, so I shouldn't need to plug anything on it, just let the line off the "canister' go where it pleases?

 

Well, the bottom photo shows the line going to the EVAP canister. That doesn't match the diagram I found (above) for a '93 DelSol si, where the EVAP purge line goes to a solenoid valve (#17) & then to the intake manifold.

So the throttlebody you want to use, it doesn't have a hose fitting for that hose to connect to?

If you're using an ECU that can control an EVAP purge solenoid, you can hook it up like that '93 DelSol si drawing. That way you won't saturate the charcoal & start smelling gasoline in the engine compartment.

Maybe you can hook it up like line #28 in that drawing. That arrangement must be for some other year/model/version. First, check your original throttlebody, see whether that fitting has some restriction. If you use an open connection to the manifold, it may suck too much air thru the canister. If that's the case, you can rig up some restriction in that line.

I saw that hose nipple before, but my confusion was trying to figure out what's to the LEFT of the MAP sensor. That nipple is to the right of the MAP sensor, pointing towards the right side of the car. It seems to be used only on some other years(???)