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blew my magnus manifold in 2 pieces... why??

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al_prez

Probationary Member
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Feb 7, 2003
ok i had some engine work done on the car and installed a
t3 t4 50 trim turbo
fmic
gm maf
680 injectors
255 fuel pump
magnus intake manifold
1g t/b
hks 272 cams


well the other night when i picked it up it was running and boosting hard. well today i took it out and it idle and drove fine. 1st time i floored it, it kinda seemed like it was cutting in and out then i heard a loud backfire and the car died. i opened the hood and my airfilter blew off and my magnus intake manifold was blown in 2 pieces.. it blew the welds right off the manifold.... anyone have any idea where i can start to look for my problem??? like i said the st night i got it back it was boosting great... it was a cold night and today when this happened it is hot and humid... i dont know if that makes any difference but that the only difference i can think of.. please help me!!!!!!
 
Do you have methanol injection or nitrous. Almost sounds like a nitrous backfire or one of your injectors sticking open.

If the force was hard enough to break the welds on the manifold and blow your air filter off, I'd check the throttle body, blow off valve, front mount, and Compressor wheel for damage as well.
 
no i do not have methanol injection or nitrous. the place that installed all the parts said it sounded like something to do with the ignition timing or something to do with the maf translater setup. they said that the maf translater doesnt measure something that it needs to... there are not sure yet till i can bring it back and have them look at it again... i checked the tb and it look fine ill have to check the other stuff later



mavisky said:
Do you have methanol injection or nitrous. Almost sounds like a nitrous backfire or one of your injectors sticking open.

If the force was hard enough to break the welds on the manifold and blow your air filter off, I'd check the throttle body, blow off valve, front mount, and Compressor wheel for damage as well.
Click to expand...
 
the maf translator doesn't measure air temperature, but that shouldn't be any reason for your car to have an explosion in the manifold. There's something else wrong.

Your setup isn't that much different than mine and not wild enough that you should have issues like this. The only thing I can think of is the ignition firing when the intake valve is open, which could be as a result of them tapping into the rpm wire on the cas incorrectly I suppose. So hard to say without the vehicle to look at.
 
yes thats what they told me they think happened.. i dont understand why it was fine the other day but now all of a sudden this happens


mavisky said:
the maf translator doesn't measure air temperature, but that shouldn't be any reason for your car to have an explosion in the manifold. There's something else wrong.

Your setup isn't that much different than mine and not wild enough that you should have issues like this. The only thing I can think of is the ignition firing when the intake valve is open, which could be as a result of them tapping into the rpm wire on the cas incorrectly I suppose. So hard to say without the vehicle to look at.
Click to expand...
 
Let's see some pictures of where it blew the welds off the manifold.
 
al_prez emailed me the picture so I could upload it for him. Here it is.
 

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Jesus, that sumbitch popped with some pretty good force right there.

I'd strongly strongly suggest checking those other items as I mentioned, especially after seeing that photograph.
 
Regardless if the new one has prevention against that or not, there's still an underlying reason that happened to begin with. A problem that NEEDS to get tracked down.
 
GVR4592 said:
al_prez emailed me the picture so I could upload it for him. Here it is.
Click to expand...


Damn glad I never bought one of those would have been a waste of time .......This has to be probably the 10th one that has come apart by magnus that I have seen on this forums and other's and 2 in person !

Tell them you want your $$ back and go get a JM Fab SMIM :thumb:
 
We are the most unloyal and 2 faced car owners ever. I have not been around long enough but I wonder if xspower/ssautochrome started out like this too :rolleyes: . I mean I have been catching shit about my ssautochrome stuff from day one but now magnus is a POS smim wow. Listen fellas shit breaks that's life that doesn't mean a company makes garbage stuff.
 
GSTeclipse said:
Damn glad I never bought one of those would have been a waste of time .......This has to be probably the 10th one that has come apart by magnus that I have seen on this forums and other's and 2 in person !

Tell them you want your $$ back and go get a JM Fab SMIM :thumb:
Click to expand...

Maybe you missed it but As I already said the New Style Magnus has bracing to stop this from happening.
 
...and maybe you're all ignoring the underlying problem that caused this. His car shouldn't of had a combustion strong enough to blow anything.

That's like blowing up a paper bag and saying wow that paper bag sucks.. the paper bag holds stuff it isn't designed to contain explosions. Just as his manifold is designed to direct air.
 
Take it to a welding shop and re weld it. Sucks that it happened but not much you can do about it.
 
gixrman said:
Thats really odd, welds are usually stronger that the material itself if welded correctly. And by no means am I saying MAGNUS puts out junk. I would think that it would fail somewhere else.

Also check your timing/ cam timing.
Click to expand...

Aluminum welds are 10%-20% weaker in the heat affected zone, that goes for the material as well as the weld itself.

There's no way to say what could have caused this, we would only be guessing. I say give Marco a call and see what he thinks of the situation.
 
I know its kinda "of the topic" but i had to bring this. The flange on the SBR exhaust manifold blow couple times on me. This is the third time that i have to re-weld it. :barf:
 
WAY WAY off topic man. . . Is there correlation at all here?

Anyway, I agree with what was said a couple above. Contact sales at Magnus and see what they have to say about it all.
 
Maybe that loud pop was from the manifold popping off. What turbo and how many pounds of boost? Dont these mani's have a tendency to break welds hence the revisions canadiantsi broughtup?
 
This is the 7th magnus I have seen pictures of, blown up at the welds... hehe my JMF has been holding 31psi Just fine :D
 
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