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What is the best sheet metal intake manifold?

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#21 ·
...so why do it?

Don't be an asshat, the beer was there to cool the manifold. Not to mention no footage of the '1000whp' pull was obtained.

That manifold is garbage, case closed.
 
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Discussion starter · #26 ·
Wow. thanks everyone for your input, so I have narrowed it down between a 1g mani that I would port, or a JMF. I know I odnt have a huge powerplant, but when I get my 50 trim back (now a 60 trim) with all my other mods, im hoping to get 500fwhp at around 30-34 psi, atleast from the research I have done and from what my mechanic says, Lucas English of englishracing.net DO you guys think a ported 1g will get me as far as the Jmf would on my setup I am running?:dunno:
 
#27 ·
Weather is its a EVO or DSM, they share the same power plant. Not only did the Magnus failed to make or sustain power, the customer service was bad. Why would a reputable shop put their name on the line to test a manifold? There is more guys using the JMF unit with better luck. There has been numerous discussion about the Magnus cracking. It just seems that with many reports, you would think twice about buying that piece. There are way too many other SMIM that one can use. Just research and you will find pros and cons of each.

To the OP... just stick to the stock manifold. See what it can make then buy a SMIM if you really need it.
 
#28 ·
That is correct ^^

As far as retaining the stock manifold, the guy obviously plans on running a SMIM regardless, so...
 
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Discussion starter · #31 ·
HUBERT: Sorry if this thread didn't meet the maturity level you expect for dsmtalk. I did alot of research on this question but cant seem to find a definate answer, that is why I posted this thread. I figured what better way to decide which one to go with than get other DSM'rs opinions. Please let me know if I DID post something that was inmature. Then again I am only 19.
 
#32 ·
I didn't mean to direct it at you, its just the SMIM dsm/evo topic. Just say SMIM and you get 8 pages of opinions and BS which somehow comes back to magnus' evo manifold. Sorry, I wish I could change that.

I run a JMF on my 2G head. So far, I like its performance. I changed my airflow from 37lbs/minute @ 23psi, to 38lbs/minute @ 17psi with the addition of FP2 cams and my JMF. I cannot separate cam airflow from SMIM airflow, but I'm not about to go back to a stock manifold. I really like how the car feels now.
 
#33 ·
teamongen said:
Weather is its a EVO or DSM, they share the same power plant. Not only did the Magnus failed to make or sustain power, the customer service was bad. Why would a reputable shop put their name on the line to test a manifold? There is more guys using the JMF unit with better luck. There has been numerous discussion about the Magnus cracking. It just seems that with many reports, you would think twice about buying that piece. There are way too many other SMIM that one can use. Just research and you will find pros and cons of each.

To the OP... just stick to the stock manifold. See what it can make then buy a SMIM if you really need it.
Click to expand...

If you really think the EVO 4g63 and the DSM 4g63 is the same powerplant then you have another thing coming. It's nowhere near a comparable manifold.

The older Magnus manifolds had cracking issues, in the past few years they've added an additional brace to deal with it. The Magnus manifolds have and still do make power....it's a fact, I ran one back in the day.

The cumstomer service with them is subpar at best but there's no reason to knock a peice of quality fabrication and support false statements.
 
#35 ·
90_talon_matt said:
If you really think the EVO 4g63 and the DSM 4g63 is the same powerplant then you have another thing coming. It's nowhere near a comparable manifold.

The older Magnus manifolds had cracking issues, in the past few years they've added an additional brace to deal with it. The Magnus manifolds have and still do make power....it's a fact, I ran one back in the day.

The cumstomer service with them is subpar at best but there's no reason to knock a peice of quality fabrication and support false statements.
Click to expand...

I don't think... it's stated by MITSUBISHI. The only way Mitsu can debut that power plant in a vehicle was to develop a relationship with Chrysler. I'm sorry to hear that You don't think they aren't the same. I'm not pulling anyones fingers, but dishonoring a prize motor that have been in productions for many years ( whether if it was put into an EVO, DSM, GVR4) it's still a 4G63. Reason could be that the EVO8-9 made no difference is that the stock manifold was engineered to perfection already.

Well on the false info... maybe you should tell that to Buschur. We all are here to gain a little information from time to time. I don't see the reason to not trust a shop, especially Buschur.
 
#36 ·
Get a copy of a flow chart for a DSM head and an Evo head for starters. Just because they share the same engine code doesn't mean they're the same internally ;).

I'm no doctor but I'm pretty sure if the flow charts aren't very similar between heads, then chances are the intake manifold plenum sizes and runner lengths won't be the same either or at least they shouldn't be. Who knows maybe that's where Marco went wrong with the Evo manifold.

I'm not argueing that the manifold made no power on the Evo, I'm argueing that the cracking issue was dealt with.
 
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