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Magnus intake manifold vs. stock cyclone intake manifold


chrisb33
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Galant VR-4 org Post #: 475748 posted 05/08/07 04:36 AM     Remind Me!  Send Private Message   Edit Post      
Hi guys,

Your thoughts on a Magnus intake manifold vs. a cyclone stock intake manifold? pro's and con's?

thanks.

chris b


Edited by chrisb33 (05/14/07 06:31 PM)

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cheekychimp Galant VR4.org Moderator
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Galant VR-4 org Post #: 475771 posted 05/08/07 06:31 AM     Remind Me!  Send Private Message   Edit Post      
It depends on the rest of your setup and/or future upgrade plans. The Cyclone manifold was designed specifically for the stock motor and the stock rev limiter. By using dual runners it maximizes torque at low rpms, helps with spooling the turbo faster and allows the engine to rev pretty much to the limiter before it falls off (on the stock turbo).

If you start doing engine work, specifically head-work and add a larger turbo the cyclone can become a bottleneck BUT there are plenty of people who have put down very healthy power figures on both stock USDM and cyclone manifolds so they aren't as restrictive as you might think. The big problem (if you can call it that) is that they wont allow the engine to continue to make power after about 6500-7000 rpms which makes them unattractive for the drag strip where guys may be pushing anywhere from 8000-9500 rpms.

For a street car with anything up to an EVO III 16G, I think you'll be happy with the Cyclone. If you are going to spend a lot of time at the track or add a much larger turbo you might want to consider the Magnus. It's a trade off, low end torque and faster spool up for more top end. That's the low down pretty much. Which of the two is more important to you, only you can decide!

Edit: I'd be interested to hear from Brianawd and turbowop on this one as they are running similar setups and the same turbo but Brian has a Ported 2G Manifold whilst Mark has the Magnus. It would be interesting to hear what the difference is in torque and top end as I believe both cars are knocking on the door of low 11s.


Edited by cheekychimp (05/08/07 06:50 PM)

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zzz_vr4
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Galant VR-4 org Post #: 475781 posted 05/08/07 07:00 AM     Remind Me!  Send Private Message   Edit Post      
this is actually a pretty common question and choices are limited, being the cyclone intakes, the evo intakes and some aftermarket items(which is more for big HP applications than anything). the trade off always exists, its either you lose low end or lose top end. somebody should come up with something for street use, something with better response than stock items and more drivable than existing aftermarket stuff. or maybe i just don't know about it

but yeah, the answer is pretty much based on what plans you have for your car, if you're just thinking of having a sleeper that'll smoke people on the road, then the cyclone is for you. but if you intend to go for all-out drag events, then something like a magnus item is what you're looking for.

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Scientist
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Galant VR-4 org Post #: 475961 posted 05/08/07 11:29 AM     Remind Me!  Send Private Message   Edit Post      
Wouldn't an evo intake mani be a nice tradeoff for the cyclone?

The runners are better lengthed for upper RPM power without sacrificing too much down low



1988 VR4....Needs a lot of TLC

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zzz_vr4
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Galant VR-4 org Post #: 476057 posted 05/08/07 02:57 PM     Remind Me!  Send Private Message   Edit Post      
i guess it would all depend on what you're after, better low end response or higher top end power

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Brianawd
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Galant VR-4 org Post #: 476065 posted 05/08/07 03:30 PM     Remind Me!  Send Private Message   Edit Post      
Just go with a stock usdm intake manifold. In order to get full use of a smim head work is a must. For years I had the idea that biger is better. Not true. This last weekend I trapped 127.94 on a 3052, stock head with hks 272s and stock intake manifold.



1992 Gaylant vr4 #439/1000
11.1at131 562awhp/484awtq
E85 FP3052 parted out
05 EB EVO SSL 11.48at124mph
450awhp/400awtq New 2.3 e85 hks 7460r
05 JEEP liberty CRD DD/ski slut
200hp/385tq


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974will
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Galant VR-4 org Post #: 476146 posted 05/08/07 06:40 PM     Remind Me!  Send Private Message   Edit Post      
i vote for extrude honed 1g.

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Rausch Galant VR4.org Moderator
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Galant VR-4 org Post #: 476148 posted 05/08/07 06:50 PM     Remind Me!  Send Private Message   Edit Post      
Quote:

--------------------------------------------------------------------------------

i vote for extrude honed 1g


that works great if you're only trying to raise the stock intake mani's choke point a bit, but for the $$ involved, it's not such a great deal. if you were somehow trying to squeeze every last ounce out of a stock system, then i get it, otherwise you'd be better off with something that more suits your needs. cyclone, smim, and so forth.



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chrisb33
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Galant VR-4 org Post #: 476428 posted 05/09/07 10:46 AM     Remind Me!  Send Private Message   Edit Post      
Hmmmm maybe investing in a magnus at this point is not practical yet. I'd probably stick with my cyclone first and then use the money i had put aside for forged pistons and rods?

any reasonable brands out there that are worth buying? forged pistons and rods?

thanks.

chris b



No worries

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zzz_vr4
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Galant VR-4 org Post #: 476463 posted 05/09/07 11:47 AM     Remind Me!  Send Private Message   Edit Post      
yes, i definitely think that's a smarter choice. you could do the pistons and rods now while your engine is still being done so you can save yourself the trouble and $ to take the engine apart again alter. the cyclone will go a long way and its an easier item to upgrade when you feel the need to.

i can't offer any opinions on brands though, i have no experience in those yet and i also think they're largely relative to the application and end user.


Edited by zzz_vr4 (05/09/07 11:55 AM)

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974will
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Galant VR-4 org Post #: 476624 posted 05/09/07 03:56 PM     Remind Me!  Send Private Message   Edit Post      
it all depends on how crazy you want to get with the car. i would personally use a ross/eagle combo as that usually suits most people's needs. if you want to get crazy you can get something like oliver rods which will handle whatever you throw at them. i have seen at least 5 blocks that have cracked using weisco pistons. i dont know if they were the problem but i know we've stopped selling them and have had no problems with ross. back to your intake i would say your going down the right road building your motor first. plenty of people have gone fast using a cyclone. as far as what to get in the future im gonna say the AMS VSR!

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chrisb33
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Galant VR-4 org Post #: 477365 posted 05/11/07 08:42 AM     Remind Me!  Send Private Message   Edit Post      
Yeah, i was really leaning towards eagle/ross combo's. pretty reasonable price



No worries

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Boostin21
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Galant VR-4 org Post #: 478691 posted 05/14/07 04:27 PM     Remind Me!  Send Private Message   Edit Post      
dyno results show usdm 1g mani's flowing the same as a magnus down low, better in the mid range and the same up top almost. a 1g mani is good for 500hp, i was going to run a cyclone but i decided against it, a 1g manifold is straight forward, and will be better for me personally while drag racing.



1991 Eclipse GSX << High Comp - E85 - Big Turbo
1997 Nissan D21 Hardbody (winter drifter)

Garage Built Motorworks

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lunchbox
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Galant VR-4 org Post #: 478766 posted 05/14/07 07:33 PM     Remind Me!  Send Private Message   Edit Post      
http://206.124.12.138/intake/

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chrisb33
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Galant VR-4 org Post #: 478789 posted 05/14/07 08:40 PM     Remind Me!  Send Private Message   Edit Post      
Lunchbox,

Cant access the link. FYI.

chris b


Edited by chrisb33 (05/14/07 08:41 PM)

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Brianawd
Higher Launch RPM
439/1000


Galant VR-4 org Post #: 478830 posted 05/14/07 09:34 PM     Remind Me!  Send Private Message   Edit Post      
For my set up I had a FRH intake manifold that I was going to run on the car this year but after some long talks with some of my friends and some late night reading on the net. I found that for my set up(stock head) a stock intake manifold would better serve my needs. If I wanted to get the full use out of the intake manifold I was going to need to do some port work, some bigger valves and some springs and retainers so that I could rev to the moon. But my car is still driven on the street and I wanted a car with a usable powerband.

Looking at the big intake manifold test you can see that 1g manifold out pulls from 4500rpms to 6600rpms and from 6600rpms up the bj's and the magnus take over. So
you have to think about what you want. A car that makes just a little more power up to from 6600rpm to about 8000rpms(if using stock head) or a car that makes good power from 4500rpms to 6600rpms

http://206.124.12.138/intake/airflow.jpg



1992 Gaylant vr4 #439/1000
11.1at131 562awhp/484awtq
E85 FP3052 parted out
05 EB EVO SSL 11.48at124mph
450awhp/400awtq New 2.3 e85 hks 7460r
05 JEEP liberty CRD DD/ski slut
200hp/385tq


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chrisb33
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Galant VR-4 org Post #: 478872 posted 05/14/07 11:00 PM     Remind Me!  Send Private Message   Edit Post      
Im planning to do headworks on my cylinder head. match porting and stuff. I dont think i can do the over size valves thing though. You think the Magnus will match my system? The powerband that im looking at is around 4000 RMP and above! Want to kick a$$ on the highways

thanks.

chris b



No worries

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merikgvr4
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Galant VR-4 org Post #: 478923 posted 05/15/07 01:10 AM     Remind Me!  Send Private Message   Edit Post      
You are brave my friend to use all the speed a stock 4g63t will run in our hiways.
Would like to suggest you run an aquamist sytem n get a better i/c.
A well running 4g63t with good timing advance will beat most cars there.

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Sr71sss
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Galant VR-4 org Post #: 478925 posted 05/15/07 01:25 AM     Remind Me!  Send Private Message   Edit Post      
Quote:

Im planning to do headworks on my cylinder head. match porting and stuff. I dont think i can do the over size valves thing though. You think the Magnus will match my system? The powerband that im looking at is around 4000 RMP and above! Want to kick a$$ on the highways

thanks.

chris b




exactly where in the world would you use all that hi rpm pull in the PI Pare? your probably going to be more happy with a stroker motor than a hi rpm pulling motor, better yet why not use a diesel motor in it with gobs of torque to boot

conrad



supersonic bluebird

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merikgvr4
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Galant VR-4 org Post #: 478926 posted 05/15/07 01:31 AM     Remind Me!  Send Private Message   Edit Post      
Conrad where's my bumper?



Chris pare sorry for hijackin your thread.

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chrisb33
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Galant VR-4 org Post #: 478934 posted 05/15/07 05:01 AM     Remind Me!  Send Private Message   Edit Post      
Hehehe I usually pass the south super highway and the skyway to and from Makati enough space for high RPM and when i say high RPM, im just looking at 7.5K - 8K only! that's high enough for me!

Since i busted my engine just recently, i plan to upgrade my pistons and rods to forged. then complement this with a magnus intake and fuel rail, then a stage two match ported head, then use a DSMLink for engine management it will take a few months before i am complete my engine rebuild. The biggest problem i have actually is to get hold on a USDSM ECU because DSMLink doesnt support JDSM ECU's

maybe you guys can point me where to get one?

Oh and im planning to change my garrett T3 turbo to an MHI Evo III 16g


chris b



No worries

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Veypor
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Galant VR-4 org Post #: 479064 posted 05/15/07 09:57 AM     Remind Me!  Send Private Message   Edit Post      
Why do you think DSMLink doesn't support JDM ECUs?
It will just complain about unavailable EGR and so, But It will work ...

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chrisb33
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Galant VR-4 org Post #: 479603 posted 05/16/07 08:07 AM     Remind Me!  Send Private Message   Edit Post      
Because I talked to Thomas Dorris of DSMLink already and he said himself that his DSMLink Chips does not support JDSM ECU's yet.



No worries

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digit
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Galant VR-4 org Post #: 479613 posted 05/16/07 08:27 AM     Remind Me!  Send Private Message   Edit Post      
just put an emanage ultimate on it

cheaper then going with a whole dsmlink setup and better, IMO

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chrisb33
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Galant VR-4 org Post #: 480746 posted 05/17/07 09:15 PM     Remind Me!  Send Private Message   Edit Post   
Hi guys,

Does anyone know how many cubic inch or how many cc's does the magnus 1G have? I've emailing Magnus since last week but they havent replied to me yet!

thanks guys.

chris b



No worries

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