Hello all. Hopefully someone can help me here. I have a '97 GSR that I purchased a little over a year ago. The intake manifold has been removed from the car—it's apparent because not all the bolts match and a fuel rail stud is missing. The injector wires appear as if they were cut and then joined back together with butt connectors. One VTEC oil solenoid wire also has a butt connector on it, but that might be stock? The strangest thing is the throttle body and emissions system though.

The throttle body is supposedly a GSR throttle body, dimensions and everything match, but I'm missing the big braided hose that generally comes out of the top of the throttle body. Some maintenance documents show the braided hose with the small copper tube coming out of the throttle body, and some don't. There are holes drilled/cast for it, but they don't go all the way through the throttle body. Plus, we can't seem to find the 3-way valve off the carbon canister, and one of the holes was plugged on the canister when we bought it. The hoses might be messed up though.

For diagnostic purposes, the car starts and runs, although the idle is messed up. After warm-up the engine either idles way to slow or too fast. It "appears" to be air/vacuum leak related problem by how it behaves, and the old carbon tank did have a crack it in if that can contribute to it. Can't seem to find any other air leaks. All hoses coming off the breather off the back of the block are all going somewhere, one hose appears to be looped back to the breather. VTEC engages and works on the car, both the butterfly valve and the cam. Engine power might still be a little on the low side though, but I have no reference.

The vehicle has a strange history to it. It's listed as a salvage vehicle, but it shows no signs of accident, frame, or flood damage. I'm starting to think that it was possibly theft recovery due to some of the above details.

Can anyone tell me what I'm currently looking at and if anything is currently hooked up incorrectly? The 3-way valve and any other hoses or lines it's supposed to be connected to can't be found. We did some work on the car and we're getting ready to fire up the engine again. Stock ECU in it. Thanks.

 

Seems to me the motor either had a setup with a itr style intake manifold like the skunk2 and aftermarket injectors then converted back to stock as best they could so the put back the stock injectors eveident from the but conectors and the stock intake manifold put back on and the throtle body looks like a b16 or itr converted to work with the stock gsr manifold. they must of put the throtle cable bracket and wheel to make it work. you need to find the diagram of your vac. lines and check all your connections.

 

Hope this helps Court.

https://honda-tech.com/forums/showth...=evap+canister

 

Thats what im talking about gabebauman! thats what honda-tech's about helping with the quickness!

 

Hahaha...no problem. Just trying to help a local SCCA buddy out.

 

Thanks Gabe, that helps some.

Weird thing is that through the link you provided, it sounds like other people have their carbon tanks set up like ours it. But according to the vacuum diagram (I have the same one) it shows that the tank vent hose is connected incorrectly... But others appear to have the same thing. So maybe that's a mistake in the service manual supplements.

One other thing I noticed. I measured the throttle body once earlier (way back when), but not really knowing the difference it hit 60mm so I assumed that was GSR throttle body. I just measured it again, and it's a 62mm throttle body. So that's an ITR throttle body correct? I'll have to check the GSR manifold, if it's 60mm we should probably do a little port matching to help the flow a bit.

Maybe that explains why the copper tube isn't there. It's been a long time since I've seen an ITR, but every other Teg I've seen has that braded vacuum hose out the front of the throttle body.

 

I didn't even run the charcoal canister on the Red Dragon after I did the B20Z swap.

 

Thanks wunfstgsr, I think you hit it on the head.

I have a 62mm throttle body. ITR if I'm not mistaken...

 

Were you running OBD1 or OBD2 setup? If OBD2 did you throw a CEL at all? Did you vent the fuel tank directly to atmosphere, or did you put a small filter on the end of the hose?

 

I was running an OBD1 P75 ECU, (same with my current B20B swap in the hatch). I ran a vent tube down and under the car but no filter, (it's Iowa).

 

I think you'll have to rename the Red Dragon to the "Dead" Dragon after last year. :-)

Not to make fun of your car's unfortunate ending...

 

Hahaha...I never thought of that. That's good. I'll have to let "YO, (TRUCKSTOP KUETLA)" in on that.

 

Well, let me add something. It's 62mm ID for the intake, and where it butts up to the manifold its 60mm ID.

So is it an ITR or not? I don't know?

 

obd1 moded b16 tb.

 

Interesting. How do you know it's off an OBD1 B16? Throttle body bore sizes, vacuum hookups? Just curious if I was actually looking at an GSR throttle body compared to a B16—what would be different.

Thanks for the help.

There's also a sticker on it that says 97DO. Don't know if that means anything.

 

theres a difrrence on the bottom of the obd2 gsr tb's they have a more bigger coolantbypass valve on the bottom compared to the b16/itr tb i could be dead wrong but im pretty sure as well as the throtle cable wheal from the b16/itr have the hole on top where as the gsr is on the bottom.