What's the difference between Magnum and normal.

05srt4clone · Post by **05srt4clone** » Sat Aug 06, 2005 8:16 pm

Just curious, where that extra 18 horsepower comes from. I would just like to know every part that is different. And hopefully make this a sticky.

dawm · Post by **dawm** » Sat Aug 06, 2005 8:39 pm

intake manifold, exhaust manifold, cam, head (larger exhaust ports, slight polish), tranmission (3.94?), pcm

tamadrumr88 · Post by **tamadrumr88** » Sat Aug 06, 2005 9:53 pm

they also have a higher-flowing/more efficient cat converter and pistons - mag's have some special heat coating and 9.9:1 (which is still low for a 'sporty' car) versus the 00-02 non mag c:r of 9.6:1..... even worse is the 03+ with a 9.3:1

and yes, the awesome 3.94's ahhhh

unsuper man · Post by **unsuper man** » Sat Aug 06, 2005 10:24 pm

9.3:1 is worse for allmotor apps. it smiles on us boosted folk

CU_rob · Post by **CU_rob** » Sun Aug 07, 2005 12:00 am

geez guys... And I was just going to say magic.

... or an extra hamster under the hood.

BlackRoseRacing · Post by **BlackRoseRacing** » Sun Aug 07, 2005 6:55 am

the coating on the piston is only on the side skirts, I was told they did that to all 2gn's for better wear protection...

rice_eater · Post by **rice_eater** » Sun Aug 07, 2005 11:23 am

ok so if they dropped the compression to 9.3 for the 03+, how can they still claim the same 132 hp? marketing plot or did they change anything?

tamadrumr88 · Post by **tamadrumr88** » Sun Aug 07, 2005 12:52 pm

timing adjustments...

same kinda idea for the 01 -> 02 magnum.... the '01 had a 'stronger' cam than the '02, so when the '02 came out and they decided to tone down the cam, they had to make timing adjustments so it could still meet 150hp...

Ash · Post by **Ash** » Sun Aug 07, 2005 2:37 pm

the magnum has the trick intake mainfold, where at low rpm the longer runners are open, then short runners open up at high rpm, keeps the power climbing. you can hear the difference, it's pretty sweet.

Anonymous User · Post by **Anonymous User** » Sun Aug 07, 2005 3:08 pm

Ash wrote:the magnum has the trick intake mainfold, where at low rpm the longer runners are open, then short runners open up at high rpm, keeps the power climbing. you can hear the difference, it's pretty sweet.

your talking about the butterflies/valves right

04r/tneon · Post by **04r/tneon** » Sun Aug 07, 2005 5:38 pm

vtec magnums have vtec

BlackRoseRacing · Post by **BlackRoseRacing** » Sun Aug 07, 2005 6:43 pm

not vtec....
VVI...variable valve intake.....

04r/tneon · Post by **04r/tneon** » Sun Aug 07, 2005 7:39 pm

BlackRoseRacing wrote:not vtec....
VVI...variable valve intake.....

yes i was only kidding

tamadrumr88 · Post by **tamadrumr88** » Sun Aug 07, 2005 7:41 pm

Ash wrote:the magnum has the trick intake mainfold, where at low rpm the longer runners are open, then short runners open up at high rpm, keeps the power climbing. you can hear the difference, it's pretty sweet.

actually, its:

'open' (short, thick runners = low velocity, large volume) from idle to 3200 and 4900+ @ WOT

'closed' (longer, thin runners = high velocity, lower volume) from 3200-4900

yes, it does sound cool when you hit the 4900rpm mark, but its not nearly as loud as 'hitting vtec'

DannyBoy · Post by **DannyBoy** » Sun Aug 07, 2005 10:41 pm

I sea foamed my top end yesterday and gained some compression, go gas mileage!

tamadrumr88 · Post by **tamadrumr88** » Tue Aug 09, 2005 6:45 pm

i totally forget to say that the muffler is also different.... com'on you guys are slacking

BlackRoseRacing · Post by **BlackRoseRacing** » Tue Aug 09, 2005 9:08 pm

im going to bed...not slacking...its 9:30pm EST here and I have been up since 3:30AM est...ZZZZZZ soorryyy, ive got to go......C-ya

nodestiny · Post by **nodestiny** » Wed Aug 10, 2005 11:07 am

Intake Manifold w/ 2ndary runners
Differant head
Borla designed exhaust
Differant cat (higher flow?)
high flow muffler

But you gotta use premium

tamadrumr88 · Post by **tamadrumr88** » Wed Aug 10, 2005 4:02 pm

please add to what we didnt already have as to not confuse anyone. we already listed those

BlackRoseRacing · Post by **BlackRoseRacing** » Wed Aug 10, 2005 8:09 pm

zzzzzzzzzzzzzz oh, wha, whats up? sorry I've been busy......

tamadrumr88 · Post by **tamadrumr88** » Wed Aug 10, 2005 8:15 pm

haha go back to bed old man.. not to get off topic.

anyway, certain acr's, possibly a 'grassroots' edition' (as i found out last night) made it through production with a 7500 rpm rev-limiter as oppose to the 6800 in all of the other 2g models....

now before anyone calls BS on this, i will try to get video of it after i get back from vacation... in fact, hes on this board, his name is belleracr. he doesnt have an aftermarket ecu either.

dawm · Post by **dawm** » Wed Aug 10, 2005 8:20 pm

this aint too far off topic, but anyone know what the gain is by putting a 01 magnum cam in a 02 magnum, or putting the 02 magnum pcm in a 01 magnum? its cant be huge but i was just curious

tamadrumr88 · Post by **tamadrumr88** » Wed Aug 10, 2005 8:46 pm

the cam idea works but you need the ecu reflashed (idk if different m/y are even compatible)