Okay I'm planning my buildup for my 1995 GSR and I'm trying to decide for my intake manifold. Could I get machine work done on the stock IM and would this perform good and be cheaper. How much does it cost to get an IM polished. This is for an all motor application

 

you dont want to polish the inside of a intake mani. Get it extrude honed and portmatched, you want some texture inside the runners to promote good atomisation in the most expeditious (sp.) manner. I would highly recommend a portmatched type r manifold over the skunkworks piece for NA

 

extrude honing is a complete waste of money.

why ITR over Skunk2 , one is a copy and one is real
one fits GS-R heads and one doesnt.....

either one performs nearly identical.

 

back that up...


itr over skunk because Postee seemed to stress cost effectiveness of the mod. follow this- used itr mani can be found for very little anywhere (alot less than what a skunk mani is going for). If you are handy, which i guess was a fat assumption, you can cut the flange off of both manifolds and weld the B18C1 flange onto the itr manifold . After welding, the manifold's runners can be cleaned up and port matched...all for free.





[Modified by GTI 1.8t, 5:57 PM 12/24/2002]

 

i meant to get the outside polish for the bling bling. So how much would the itr cost vs the sk2 im cuz can't u get the sk2 for like 250 and would i be losing performance

 

if you are against extrudehoning ya gsr mani, the skunk piece is a cleaned up version of the itr, if you dont feel like doing the modding to the itr mani, then get the skunk, you will be happy.

 

Keep you GSR dual stage manifold, pull the IAB plate out and run a chipped ECU with a higher VTEC x-over..... I hate the stock P72 ECU because when VTEC engages the motor bogs, I personally think it's just too low... My friend's GSR/EG with a CTR intake cam running a stock ECU lags really bad now... The goes.... up to VTEC, then when VTEC engages the motor lags a bit until the IAB's open up and once you get past that then you're okay... I just like the GSR manifold better... Honda had a reason to design that manifold with the IAB's, and that was for low end torque (not having IAB's opened up) but then again they don't run the ITR motor with that manifold.... I dunno it's just my opinion... I also rode in my other friend's GSR/EG with the exact same setup as my other friend except he was running a "tweaked" manifold and a chipped P28 running a SK2 prog.... That car felt a lot stronger even tho the motor was in an Si chassis as apose to my other friend's DX.... Latez

 

It costs $1000 to extrude hone a intake manifold.

For $1000, I can get portflow to fully work my entire head, intake manifold, and still have $$$ left over.

That's how I back that up.....

 

I doubt that modifying(porting) your stock IM will be much cheaper than a ITR or Skunk2. You could find a Skunk2 or ITR for about $270.

Jay Kim

 

.back that up...


son, your prices are WAAAY off. Try $200-400, depending on the application and requested turnaround time, in turn you get a perfectly flowing piece..moving right along...


[Modified by GTI 1.8t, 5:07 AM 12/25/2002]

 

would someone mind telling me how much power increase there would be with either IM?

 

First off, I'm most likely much older than you are, so don't call me SON, boy.....

Second of all, you've never called them, because if you did, you'd know how much it costs to have the work done, and how long it takes.

It's well over $400



[Modified by B18C-EJ1, 10:56 PM 12/24/2002]

 

ok, whatever dad, mom, grandpop, older obviously does not mean wiser. anyway just do this-
please peep this retail price list str8 from the ExtrudeHone website (http://www.extrudehone.com/pwrfloprice.html), paying special attention toAUTOMOTIVE INTAKE MANIFOLDS Price (USD)
Alum. 4 Cylinder Intake N/A* 365.00
last i checked, 365 is less than 400. Also, keep in mind, student, that the prices are retail and are infact, negotiable. I am sorry, you have no idea of my past dealings, in any capacity, with ExtrudeHone.





[Modified by GTI 1.8t, 7:42 AM 12/25/2002]

 

So I check out their site, and it seems that they have changed thier prices quite a bit...

But, you are also off there buddy...

4 Cylinder Aluminum EFI (2 pc.) 475.00

And that's still $175 more than a Skunk2 manifold for the GSR.

 

bah ive seen over 10whp gains from a type r putting a skunk2 manifold on.

Skunk 2

 

either way, extrude honing an IM is a waste, dropspeed made like 1whp up top after doing it, not worth 350 bucks

 

the skunk2 and itr are both very similar. i prefer the itr because oem is always better than aftermarket. thats why the car was built with it. i have a b16 and am going to put an itr in mine but if u have a gsr then i would do the skunk2 since the itr doesnt bolt on automatically to the b18. same thing i say

 

Just take your stock manifold to Alaniz and ask them how much it would be to have it ported to outflow both ITR and Skunk2.

Jay Kim

 

In my opinion, go with the Skunk2 IM. I have a 96 GS-R, and I noticed a helluva difference over the stock piece. The ITR is nice, but it's not a direct bolt up piece. Not to say the ITR won't work, but for ease of application, and VERY noticable power, use the Skunk2. And u can find them for fairly cheap. I got my used, but never installed, for 300. including shipping from another state.