The Top DSM Community on the Web

For 1990-1999 Mitsubishi Eclipse, Eagle Talon, Plymouth Laser, and Galant VR-4 Owners. Log in to remove most ads.

Please Support Rix Racing
Please Support STM Tuned

1G Best way to line up a 1g throttle body

This site may earn a commission from merchant
affiliate links, including eBay, Amazon, and others.

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Well the gasket is fairly wide so it wont cause a vacuum leak just from being offset on the play in the bolt pattern. But when I gasket matched my intake bore to the throttle body bore I experienced what your talking about. The bolt holes in the 1G TB are pretty big and if I just let it dangle it would offset my gasket match between the two pieces and create an edge.

I just opened the throttle blade by hand with the elbow off and stuck my finger in so I could feel it line up with the intake. Then used a marker to mare the position up/down and side/side. Put the elbow on and moved the TB so it lined up with my marks and tightened it down. If you are just looking to center it and not trying to match anything on the on the intake you can just rotate the TB until it takes up the slack in the holes against the bolts. It will then be centered but not square to the intake
 
The gaskets will go on more than one way and if you do it wrong I believe it leaks.
I have the gasket on right.. it's matched up correctly. When putting the actualy throttle body on there is slack and it can move left right up or down.. so I can tighten it and have it a the way to the left. Or right. Or top. Or bottom. I'm having a problem getting it centered with out leaking

The gaskets will go on more than one way and if you do it wrong I believe it leaks.
At first I did have the gasket the wrong way. The. I noticed there's a round spot that matches the gasket round spot. So I have that right. Now I'm trying to get the TB CENTERED.. NOT THE ELBOW

I needed this today ... Thankyou
It leaks if just bolt it on. Or I wouldn't be asking for help.

How about some pics to show us where the problem lies? It’s 2 bolts and 2 studs/nuts that holds the tb against the intake manifold. Not rocket science

I'm having a problem lining it up. Have you read any of the other comments. One guy explains that since the wholes the bolts go threw are much bigger then the bolts. Leaving room for it to move. And I know its not rocket science. Was just asking if there was a certain way to do it.
 
Last edited by a moderator:
At first I did have the gasket the wrong way. Then I noticed there's a round spot that matches the gasket round spot. So I have that right. Now I'm trying to get the TB CENTERED.. NOT THE ELBOW

I never had to do anything special, there was more than enough room on both the intake manifold and throttle body to seal against originally. Do you know where it's leaking?

As was asked earlier, do you still have the throttle body stay (#6 below) that fits between the elbow and the washers/nuts? How about the throttle body ground strap and it's screw? (#5 and #6) used to make sure the IPS functions?

You must be logged in to view this image or video.
You must be logged in to view this image or video.
 
I'm having a problem lining it up. Have you read any of the other comments. One guy explains that since the wholes the bolts go threw are much bigger then the bolts. Leaving room for it to move. And I know its not rocket science. Was just asking if there was a certain way to do it.
Did somebody enlarge the holes? I asked the bracket question to make sure youre not bottoming out some bolts.
 
Did somebody enlarge the holes? I asked the bracket question to make sure youre not bottoming out some bolts.

I have no bracket. I never removed one since I've had the car. Mabe that's why I can't get it lined up right.. once it was leaked out the top right corner. Then I moved it down and it was leaking out the left side. I was just wondering if there was a way to line it up right.. people on here act like I'm making things up.. o ya also there's a alien in the intake manifold drinking coffee. I'm not sure how to get him out. Has anyone else had this problem!?
 
Can you please post a picture of the throttle body gasket surface, the gasket and the intake surface? Would also be nice if you posted a pic of them together so we can see why it is moving around.
 
Can you please post a picture of the throttle body gasket surface, the gasket and the intake gasket? Would also be nice if you posted a pic of them together so we can see why it is moving around.
I TB surface clear and smooth.. nothing is on it. I also have it on the correct way. I can garuntee that.
 
Can you please post a picture of the throttle body gasket surface, the gasket and the intake gasket? Would also be nice if you posted a pic of them together so we can see why it is moving around.

Have you read any of the above comments?
Check out #4. He understood what I was saying.. the TB bolt holes are pretty big and the throttle body would dangle.
 
Well seems like a lot of people are still confused and wanting to help haha There are plenty of people asking for more info after post 4. If that is how you fixed it then mark it as fixed, sounds like post 4 is what you need to do.
 
Have you read any of the above comments?
Check out #4. He understood what I was saying.. the TB bolt holes are pretty big and the throttle body would dangle.
It sounds like somebody drilled the holes out for some reason. Can you please post pics so we can help you? Also you need to rule out the bolts bottoming out because you're missing the bracket. Unless it was running fine before.
 
The bolts ... or studs for a 1g throttle body are m8 x1.25.... right? The holes should be slightly larger than 8mm.... if they are larger than it was modified and I’d buy another throttle body. This is a really stupid problem to have ...Post pictures , it’s simple
 
It sounds like somebody drilled the holes out for some reason. Can you please post pics so we can help you? Also you need to rule out the bolts bottoming out because you're missing the bracket. Unless it was running fine before.
It was running fine before. I have a second throttle Bodie and the holes are the same size. PLEASE READ #4

The bolts ... or studs for a 1g throttle body are m8 x1.25.... right? The holes should be slightly larger than 8mm.... if they are larger than it was modified and I’d buy another throttle body. This is a really stupid problem to have ...Post pictures , it’s simple
I did buy another TB. the holes are the same size.

Well seems like a lot of people are still confused and wanting to help haha There are plenty of people asking for more info after post 4. If that is how you fixed it then mark it as fixed, sounds like post 4 is what you need to do.
People are confused because noone has read the posts above. POST 4.. That guy explained why it's has some play..
If people read other comments they wouldn't be confused with what I'm talking about.
 
Last edited by a moderator:
People are confused because noone has read the posts above. POST 4.. That guy explained why it's has some play..
If people read other comments they wouldn't be confused with what I'm talking about.
Problem is you don't know if anything was modified or not. Let's assume that it is. Why don't you wrap a little electrical tape around the bolts where it goes through the throttle body. It isn't a sealing surface inside the holes. Just enough to take up the slack and not be loose.
 
Support Vendors who Support the DSM Community
Boosted Fabrication ECM Tuning ExtremePSI Fuel Injector Clinic Innovation Products Jacks Transmissions JNZ Tuning Kiggly Racing Morrison Fabrications MyMitsubishiStore.com RixRacing RockAuto RTM Racing STM Tuned

Latest posts

Build Thread Updates

Vendor Updates

Latest Classifieds

Back
Top