i just put a 7mge in my car it wont accelerate to well and when it does the exhaust gets so hot that it burns (it already melted the intake tube) i checked the timing and all the marks are aligned and its at tdc but i cant figure out the is going on Ive tried everything i can imagine and I'm at a stand still:1zhelp:
i need help with exhaust heat
- Thread starter thuggs17
- Start date
aye mate said:
Moved to 7M Naturally Aspirated Tech (7M-GE)
thuggs17 said:
Wow... That's impressive.
Backup a step.
You put a 7MGE (non-turbo) in and it's doing this?
What car did you put it in? A supra? What about a fuel pump? Where did the injectors come from? Etc..
Give a lot more detail and I'm sure we can help you figure this out.
Sounds like a plugged exhaust system. Muffler or cat. Disconnect the ehaust manifold at the header pipie and see if that helps it run on up. and should stop the heating.
If so, it could be either part plugged, so you;ll have to check the cat, then muffler.
If so, it could be either part plugged, so you;ll have to check the cat, then muffler.
i disconnected the entire exhaust system and still no acceleration and the heat is to high I'm almost giving up on this car and selling it but trying ti keep my patience
replace the cat. The signs are everywhere, we just need to learn to read them is all.
I may make 500 posts before Ij has me kicked off if I mind my p's and Q's. That's like my way of saying thank you, man.
I may make 500 posts before Ij has me kicked off if I mind my p's and Q's. That's like my way of saying thank you, man.
Supramacist: If he disconnected his entire exhaust (including the cat) and he is still having acceleration issues, please explain your post.
What is a new cat going to do?? :dunno:
What is a new cat going to do?? :dunno:
Maybe I misread, but I could have swore he was saying he took the pipe off. I autoassumed that he disconnected below the cat. Would it be right to think he disconnected from the header??? I disconnected the exhaust is vague at best. I was agreeing that he might want to go a bit deeper is all. Sorry I woke you up a bit with that one joel. I wasn't trying to start anything. I guess in thinking about it he could have dropped it from the down pipe, but I have this feeling that says he didn't. And if he did.., what a huge pita to find that wasn't the problem. That's right up there with pulling the head thinking you have a BHG and finding it all nice and shiny and lubed ready for play.
I would think that if the cat was causing this heat to expand being fowled out maybe he could gut the cat and see if that lowers the heat and if it does...., sinse he probably doesn't want to pay 5$ per gallon he may be able to get off with a new cat and a trip to the muffler dudes, dude.
I would think that if the cat was causing this heat to expand being fowled out maybe he could gut the cat and see if that lowers the heat and if it does...., sinse he probably doesn't want to pay 5$ per gallon he may be able to get off with a new cat and a trip to the muffler dudes, dude.
My "guess" is it's running retarded.
Might be another case of a slipped balancer giving an incorrect timing mark.
Might be another case of a slipped balancer giving an incorrect timing mark.
I swear I am going to change my sig to a Charlie Brown logo....., you guys are always giving me a hard time. LOL
He called him a tard, LOL. I had a gear head buddy of mustang orientation over to scope out my build and he referred to me as mechanically retarded. So hey, Life hands you lemons...., go get a Supra.
He called him a tard, LOL. I had a gear head buddy of mustang orientation over to scope out my build and he referred to me as mechanically retarded. So hey, Life hands you lemons...., go get a Supra.
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The engine lugging down would explain the heat increase for sure. Jeez I hope when I get this thing together, I can make it run again.
When I said "retarded" I wasn't talking about you 
!
I meant sometimes with our motors the outer ring on the balancer can slip around so when you set the Ignition timing you think it's correct but it isn't and this would explain why his motor runs hot and has no balls.
!I meant sometimes with our motors the outer ring on the balancer can slip around so when you set the Ignition timing you think it's correct but it isn't and this would explain why his motor runs hot and has no balls.
Ok, that is a fair answer, I also auto assumed he took the cat off so we are both guilty of assumptions.:evil2:
Edit: I am really not trying to give you a hard time at all. I just don't like to see people toss spendy parts at the car that may not be needed it in the end.. There are ways to test for a bad cat.
I get you man...., I was just clowning around last night. I wasn't being serious when I held you guys accountable for giving me crap. Same with you Ij, I was just clowning man. And I read that into your responce as well. All is well on my end.
My point of view and action with my supra is this...., It's all going to have to be changed out anyway, sure the alternators not dead yet but it's grinding and I dont want to have to jump the car every two miles for half an hour to charge the battery enough to get where I have to look for a down hill run. If we keep throwning new parts at these things, they are bound to stop breaking sooner or later.
Ok alright I was offended by the word BALLS. Can we switch to testicular fortitude?:stickpoke
My point of view and action with my supra is this...., It's all going to have to be changed out anyway, sure the alternators not dead yet but it's grinding and I dont want to have to jump the car every two miles for half an hour to charge the battery enough to get where I have to look for a down hill run. If we keep throwning new parts at these things, they are bound to stop breaking sooner or later.
Ok alright I was offended by the word BALLS. Can we switch to testicular fortitude?:stickpoke
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That is one way I guess..
I go the other way because I am a cheap ass. I want to verify a failure of a part, then try to figure out what caused it to fail so it does not happen again, then I replace only what is needed. That is just me though..
Sorry to get off topic Thuggs17..
I go the other way because I am a cheap ass. I want to verify a failure of a part, then try to figure out what caused it to fail so it does not happen again, then I replace only what is needed. That is just me though..
Sorry to get off topic Thuggs17..
Ian (IJ) brought up a very good point about the ballancer slipping. I have had mine do that and have seen a couple of others do it as well.
An easy way to check this is to turn the motor over by hand and line the timing marks up @ 0, then get a really long something or another like a 10" 3/8 drive rachet extension and put it down in th #1 spark plug hole so that it rests on top of the piston. now turn the motor by hand in both direction and see if the extension drops when you move it is either direction. If it lifts when you rotate the crank in either direction from 0 then the ballancer has slipped.
One other thing that happend to me personally a while back is that for some reason the ECU would went out and it would not advance the timing as needed. The car ran, but it stayed locked at whatever timing it set it at. I have never seen or heard of this before and since then, but it has happened, so its a thought also.
An easy way to check this is to turn the motor over by hand and line the timing marks up @ 0, then get a really long something or another like a 10" 3/8 drive rachet extension and put it down in th #1 spark plug hole so that it rests on top of the piston. now turn the motor by hand in both direction and see if the extension drops when you move it is either direction. If it lifts when you rotate the crank in either direction from 0 then the ballancer has slipped.
One other thing that happend to me personally a while back is that for some reason the ECU would went out and it would not advance the timing as needed. The car ran, but it stayed locked at whatever timing it set it at. I have never seen or heard of this before and since then, but it has happened, so its a thought also.