Intake Manifolds

[fatherbubble]

Which do you think is better Magnus Street or Race Magnus Motorsports - DSM/Mitsu Sheetmetal Intakes an JMFab Drag JM Fabrications race JM Fabrications street JM Fabrications

Also I was looking at youtub an I seen jmfab had a video on there process of the manifolds. To me it looks like there cheaply made. Thoughs on that. YouTube - JM Fabrications How It's Made--Intake Manifold

 

[1990gsx1781]

they sorta do look cheaply made

 

[->PrOjEcTGS<-]

What's cheap about it? Unless you are referring to the fact that it is just sheet metal and you think that anyone can make one? Buying a cnc machine is not cheap! What you are paying for is all the hand work that goes into building these things. The R&D, welding, polishing, measuring, pressure testing and the paycheck that goes to the guys there at JMFab!! I would more than gladly pay that much for a manifold when I know it is proven to perform well and it is for the most part hand made here in the good old USA!!

 

[dennyt4]

Exactly what looks cheaply made??

I sat and watched about 3 minutes of that waiting for the "cheaply made" part and then said forget it...I don't know what you were expecting to see, but it looked like quality to me.

As far as which one is better, I don't have any personal experience to tell you, but to say that video shows a cheaply made manifold is just beyond me. If my current setup doesn't produce the desired results, I would have no problems going with a JFM based on what I saw in that vid.

 

[knochgoon24]

Yeah, I don't see how they look cheaply made at all. That's a lot of labor put into each manifold.

 

[fatherbubble]

They use the machine for the body an then take the stacks an hit em with a hammer to bend them into form. Also theres no info on testing. As in how much boost they can hold. Thats why I think cheaply made no research done...

 

[dennyt4]

They use the machine for the body an then take the stacks an hit em with a hammer to bend them into form.

Versus what?

 

[fatherbubble]

verses getting them machined like that with thicker materal.

 

[dennyt4]

verses getting them machined like that with thicker materal.

Not a chance! It is called a Sheet Metal Intake - not a Fully CNC'd billet intake.

 

[->PrOjEcTGS<-]

It's called metal fabrication. Sometimes it does involve hammers and what not. The cnc machine is very accurate and will spit out pieces that are identical every time. But, what did it take to get that programmed into the machine? Labor. You still don't get it do you? I would like to see you put together a manifold... Since you've never made one before it may take you several days if not weeks to build just one!! Then, after you have about 80-100 hours into it, how much would you charge for it? Also how would you make a flange like that without an expensive cnc machine? All that stuff costs money!

 

[dennyt4]

And let's pretend for one minute that the stacks were going to be made from one solid piece just like the rest of the flanges, etc...Do you realize how much wasted material (AKA Cost) you just added? I mean that just doesn't even make sense.

 

[fatherbubble]

Isn't the stacks the weak part since there so thin. Thats why it looks cheap to me. Everything else is great an then when they did the stacks they just went thin an bent the tubing to fit. I just figured they would of made a form for the stacks an did it like that.

 

[gsx951]

Also I was looking at youtub an I seen jmfab had a video on there process of the manifolds. To me it looks like there cheaply made. Thoughs on that.

I think you are unfamilliar with common fabrication techniques.

The clamp blocks and punch to ram-form an intake runner would be an easy $10k. and since the companies that cater to us are small and their tooling budgets are modest, production type tools are out of the question.

Keep in mine that a decent used CNC vertical mill is $30~$40k and that the Chinese EDM we just bought was $80k. Equipment like that would certainly make an operation more efficient but is also well beyond the means of most in our sport.

For the limited production runs being made, I think the process is great and results in an excellent product.

 

[92awddsm]

For those that think they are cheaply made, go back to shopping on ebay. If you feel the need to question something that was proven before you could legally drive, the dsm community doesnt really need you. Now, once you have something to contribute, we may pay more attention to what you have to say. Untill then, keep your bull shit to yourself. What you say means nothing to me when I and many others have dyno sheets to prove that you havent a clue what you are talking about.

By the way, how many JMF smim have you seen crack or split completely open like the magnus?

 

[fatherbubble]

They really do that like that. I worked in an industrial fab shop before but we never did that, but all we did was piping that 1/2" thick an width of 24 - 36" at 50'+ long for chemical plaints.

Lets see the dyno sheets JMfab doesnt have any... An thats what I'm trying to find out who's better. For a good product there's no info on it.

 

[dennyt4]

For those that think they are cheaply made, go back to shopping on ebay. If you feel the need to question something that was proven before you could legally drive, the dsm community doesnt really need you. Now, once you have something to contribute, we may pay more attention to what you have to say. Untill then, keep your bull shit to yourself. What you say means nothing to me when I and many others have dyno sheets to prove that you havent a clue what you are talking about.

By the way, how many JMF smim have you seen crack or split completely open like the magnus?

+1


fatherbubble - the word is "and" not "an"...it's really painful to try to read your posts.

 

[fatherbubble]

Ok thanks.

 

[dennyt4]

Ok thanks.

Why change it - your first response was actually funny...put it back

 

[92awddsm]

They really do that like that. I worked in an industrial fab shop before but we never did that, but all we did was piping that 1/2" thick an width of 24 - 36" at 50'+ long for chemical plaints.

Lets see the dyno sheets JMfab doesnt have any... An thats what I'm trying to find out who's better. For a good product there's no info on it.

Why does JM need dyno sheets when they have true timeslips to back them up? Hell, I could show you dyno sheets of 800whp supras that cant keep up with me so what does a dyno sheet prove?

 

[Supa Dexta]

You'll soon realize fatherbubble posts some of the worst stuff you'll ever see on a forum, any forum. He gets told this on a regular bases on the link board/ and to stop posting misinformation he thinks he knows, or says he "read some wheres".

Also on topic, there is a reason people are happy with these products, and they have a huge following for top notch products. If you feel you can do better for your money, feel free to buy that or make your own. The amount of hands on work, cnc machines and quality products is far from "cheaply made"

 

[->PrOjEcTGS<-]

For those that think they are cheaply made, go back to shopping on ebay. If you feel the need to question something that was proven before you could legally drive, the dsm community doesnt really need you. Now, once you have something to contribute, we may pay more attention to what you have to say. Untill then, keep your bull shit to yourself. What you say means nothing to me when I and many others have dyno sheets to prove that you havent a clue what you are talking about.

By the way, how many JMF smim have you seen crack or split completely open like the magnus?

Well said!!

They really do that like that. I worked in an industrial fab shop before but we never did that, but all we did was piping that 1/2" thick an width of 24 - 36" at 50'+ long for chemical plaints.

Lets see the dyno sheets JMfab doesnt have any... An thats what I'm trying to find out who's better. For a good product there's no info on it.

Dude, I think you are comparing apples to oranges when you talk about your INDUSTRIAL fabrication. Scale that shit down a little bit. You are talking about a huge pipeline that is three feet in diameter!! Of course it's gonna be 1/2" thick!! If you were to proportionally reduce the diameter/thickness of that pipe to the size that is used on the intake manifold. You would probably find that JMFab is actually using pretty thick pipe for that application!! Let me do a little calculation!! A 36" pipe with at thickness of .5". Take .5" / 36" = .0138 :1 ratio between diameter to thickness. Now, I don't know the diameter pipe they use but let's say it's 2" multiply that by .0138 and you get .0276" thick pipe. THAT'S NOT EVEN 1/16th (.0625) OF AN INCH THICK!!!

Now that's a rough estimate but you get where I'm coming from.

I hope the next thread you make is how you think intercooler piping is too thin!! That must make it inferior also!!!

 

[1gDSM4g63]

Lets see the dyno sheets JMfab doesnt have any... An thats what I'm trying to find out who's better. For a good product there's no info on it.

FFWD Connection has collected a dozen different manufacturer SMIMs and their supposedly going to test them on a flowbench pretty soon.

What you say means nothing to me when I and many others have dyno sheets to prove that you havent a clue what you are talking about.

However, that doesn't prove jack in comparsion with Magnus. There are tons of factors beside the SMIM on how much power the car puts out on a dyno, like engine mods done, fmic ic, turbo, exhaust manifold, tuning based on SMIM, etc...

By the way, how many JMF smim have you seen crack or split completely open like the magnus?

Clearly their has been cracks or split on Magnus SMIM and I highly doubt JM Fab SMIMs crack or split since they solely focus on fabrication.

Untill then, keep your bull shit to yourself. What you say means nothing to me when I and many others have dyno sheets to prove that you havent a clue what you are talking about.

I second that, think what you what about Magnus vs. JM Fab.

 

[anteversion]

IT's sure about the fact that you don't know much about creating things and working with sheet metal or aluminum.. JM fabrication is an absolute top quality machine/fabrication shop and they're products are awesome. the guy in the video don't tap the runner with a hammer to give it his form dude... he is doing this just to put it in place.... as you can see in the video , the flange is made in a way that runners are tapered fit in it so it make the welding lot easier. I've made by mylsef an intake manifold this winter because i'm too cheap to aford a real jm fabrication one... and let me know that its a lot of ####ing work.... i've putted around 60 hrs in it to do it so-so right... believe me... try doing one with your own way and stuff and you will praise JM Fab like never you praised something before

 

[pj91gsx]

IT's sure about the fact that you don't know much about creating things and working with sheet metal or aluminum.. JM fabrication is an absolute top quality machine/fabrication shop and they're products are awesome. the guy in the video don't tap the runner with a hammer to give it his form dude... he is doing this just to put it in place.... as you can see in the video , the flange is made in a way that runners are tapered fit in it so it make the welding lot easier. I've made by mylsef an intake manifold this winter because i'm too cheap to aford a real jm fabrication one... and let me know that its a lot of ####ing work.... i've putted around 60 hrs in it to do it so-so right... believe me... try doing one with your own way and stuff and you will praise JM Fab like never you praised something before

You did a pretty good job. Have you installed it yet? Any noticable power made by it?

 

[Freerevving]

ha ha ha this is so funny

I machine for a living and I can tell you that the process looks 101% professional... and a HAMMER is a basic necessity for a machinist. Metal won't cooperate with just your hands.

That video actually impressed me quite a bit. They seemed to take A LOT of trouble in making their intakes... other sheetmetal intakes are made a whole lot easier than with the steps taken in the video, but wow the qualty they put into that intake is impressive. They used so many (expensive) steps, I can't see them doing anything more in the process. Maybe chemical dipping, but that would be totally unecessary.

As for cheaply made... dude, you blurted out the first thing that came to your head... we all make mistakes... don't waste your time defending a moot point...