Does anyone out there know if a skunk 2 intake manifold will give a noticable performance on a stock gsr motor compared to the stock manifold? Some people say it does and some say it doesn't. i Just wanted to get some opinions.

 

It wont do anything on a stock car just might make less power

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by gsrboi80 &raquo;</TD></TR><TR><TD CLASS="quote">It wont do anything on a stock car just might make less power</TD></TR></TABLE>

Wrong... It actually depends what you want to achieve. The stock IM has dual runners which means that vtec engages at a low rpm and at a higher rpm. Each vtec engagement is subtle.

The SK2 IM has a single runner, it will engage vtec at only one point. You will either need to chip your p72 or grab a chipped p28. I'm running a chipped p28 on my gsr w/ Sk2. Vtec engagement is around 5800 and pulls hard when rpms hit that point. Basically you will get more top end power rather than a subtle low and a subtle high vtec engagement.

Plus the SK2 IM has bigger runners as well. Which means your head will breathe a lot better. I spoke to a SK2 rep and he stated the new Pro Series IM are a bit bigger on their runners than the old SK2 IM I have.

Just my $.02

 

Wrong... The stock IM has dual plenums which means that even though vtec engages at a lower rpm than most hondas (4400 rpms), it does not engage at a higher rpm. There is only one vtec engagement. The higher rpm which you are referring to is the second plenum opening up, which makes a sound easily mistakable as normal vtec engagement, which is just shy of 6000 rpms.

The S2 IM does have a single plenum, and yes vtec <U>still</U> engages at only one point, but there will not be a second plenum opening because it doesn't exist.

The S2 IM is bigger yes, which allows for more flow, but my 2 pennies is that it will not be worth running this part on a stock motor. You'll need a few more bolt ons and most likely an upgraded valve train to make full use of this piece.

 

if you're planning to upgrade to a skunk2 manifold it would be also best to use a large throttle body, itr ecu and a cold air intake.

 

on stock cams, dont expect to make any power over stock. this has been covered many many times.

 

Thanks !

 

[QUOTE=DoctorGSR]on stock cams, dont expect to make any power over stock. QUOTE] what should you do with the timing?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by xSpanksx &raquo;</TD></TR><TR><TD CLASS="quote">

Wrong... It actually depends what you want to achieve. The stock IM has dual runners which means that vtec engages at a low rpm and at a higher rpm. Each vtec engagement is subtle.

The SK2 IM has a single runner, it will engage vtec at only one point. You will either need to chip your p72 or grab a chipped p28. I'm running a chipped p28 on my gsr w/ Sk2. Vtec engagement is around 5800 and pulls hard when rpms hit that point. Basically you will get more top end power rather than a subtle low and a subtle high vtec engagement. The old skunk2 im is a copy of an itr im. hte only differance is that the opening where it meets the throttle body is 64mm instead of the itr's 62mm. this also means that with the stock gsr 58mm tb you will be causing a bottle neck. This is why with my aebs 65mm opening im i also got a jg 65mm tb to match

Plus the SK2 IM has bigger runners as well. Which means your head will breathe a lot better. I spoke to a SK2 rep and he stated the new Pro Series IM are a bit bigger on their runners than the old SK2 IM I have.

Just my $.02 </TD></TR></TABLE>

lol 2000 + post and i would think you would know more. please do not post false information if you do not know what you are talking about then please just do not post instead of posting false and miss leading info.

the gsr im has 2 runners or duel stage runners. vtec engauges at 4400rpm on a stock gsr. before 5800rpm it runs on the smaller runner only for the sake of better low end power. at 5800rpm the second runner opens for better top end. a duel stage runner points down like the gsr one. this design helps low end at the price of some top end power. this design also makes the vtec engagement much more quiteer than a single stage runner.

the skunk2 only has 1 large runner like that of the b16 and itr. this is better for top end and vtec engagement is also much louder than a duel stage.

in general if you going to do the skunk2 im on a stock motor your really not going to feel much. its going to feel like just another bolt on like a intake header or exhaust which you probably wont feel anything at all. but you will loose a few hp in the low end and gain a few hp in the top end but nother major or noticable