what size is the collector on this header and what kinda gains over a DC would I obtain for switching....My car make just over 200 whp now w the DC.....

 

I know the collector is either 1.9" or 2." When I took an actually ruler to mine it was about 2." It is really tiny.

 

I'm thinking of buying one and doing a 2.5inch collector swap on it then getting the resto of a 2.5inch custom made... hope this will net me some decent gains...

 

im not sure about the dyno numbers, but i know it makes more power than the DC..i dropped 2 1/2 tenths when i switched from my DC to my Greddy...I wonder if IM pushing 200whp?? my beat time is 13.7 @ 102 with bolt ons...hmmm..maybe ill dyno it one day..peace

 

the collector on my Jun is ~2.45"

What mods do you have with 200 WHP? Sounds nice

 

im running AEM CAI, Greddy SS header, Apexi N1 exhaust , VAFC, Skunk2 Cam Gears, and a Chipped ECU...full interior..everything else is stock...peace

 

He wasn't talin to you, dork! heh

He was talking to 96SRV, the one who definately has 200+whp.

 

the collector on the greddy is 2.25 inches in diameter...

 

The I.D. (internal diameter) of the collector is 2.0'' exactly. This is fact.

 

lol...k I'd really like to stay on topic...my mods list is long I don't really want to list it all right now..but I guess I'll list some of the bigger mods...uhh crower2's,crower valvetrain, SS valves, type-s pistons, p72 w hondata...etc etc all bolt ons....

I hope this could unlock some hp anyone here modded a collector? Anyone else have a greddy?

 

right. it HAS to be 2.0 to be considered a 'bolt on'. if it were 2.25 or 2.5, then it would not bolt on to the stock cat.

 

Hmm I feel guilty about Hacking my Greddy Header but I think I'm gonna make a 2.5" downpipe as well to go with my test pipe what should I do it in Stainless? But I'll have to weld in a bung for the O2 sensor right?

 

Well i dont know what was up with my Greddy header because i had to have a custom cat connected anyways because the header connecters were to big for my stock cat...

 

Hmm was it the Trust non-Carb one? Is was it the greddy? I looked at mine and the flange looks a little funky as well...

 

yah, i think mine it the non carb one, and it was funky

 

I'll match mie up to the stock cat tonight anf check it out...I was looking at the end of my test pipe and it looks funky too.

 

When is the SMSP header coming out damnit..thats the header to go with for all motor...also the only one other than maybeMugen id get rid of my greddy for...peace

 

fair enough...SMSP is really nice but I'm talking about a whole different price range....greddy is like half the price... I'm really looking for somthing better than my DC.

 

Well, just to let you know, i had the DC before i got my Greddy and my butt dyno (haven't finished everything so i can take it and get it tuned) can tell the difference. I have a pic someplace, that i took, of the size difference that you can tell the Greddy is bigger for sure. I will post if if i can find it.

edit: i cant spell today


[Modified by CHK4TIX, 10:09 AM 3/26/2003]

 

DC header blows, it's a fact. Just get a greddy.

 

I just had my greddy header modded at Import Builders. They hacked off the collector and flex pipe and welded on a 2.5" pipe. I was about to cry as I watched Jerry hack the downpipe up on my BRAND NEW header.

If you eliminate the flex pipe make sure that they get the angle on the collector right cuz I had to have mine modified again by the muffler shop for it reach my cat.

As far as the gains, I don't really know how much an improvement it is over the stock greddy collector cuz I didn't put the header on til after I modified the collector, but it does pull alot better up top over my stock manifold. Im gonna redyno my car and see how much just the header w/ modded collector helped.


[Modified by laugHin22CX, 8:53 PM 3/26/2003]

 

Yeah I have engine mounts, I don't really need the flex pipe or any sort of joint do I?

 

Jerry at Import Builders made the end of my collector so that it used a donut gasket. He told me to have the muffler shop flare the end of the pipe coming off the cat so that it goes around the donut gasket and to use a flange that wasn't welded on w/ spring loaded bolts, just like stock exhaust manifold and cats have. He said it would be fine. I followed his instructions. I noticed more vibration though coming from the exhaust since I don't have a flex pipe. My motor is in a civic though w/ a mount kit, so I have alot of vibration from the motor to begin with.

 

oh so you have a donut/spring joint thing. Okay that's what I was planningto do. THanks

 

bump

hey guys i just ordered a greddy header. I have decided to put a 2.5 collector on the end instead of installing it and deciding to do it later. I am going to go with a 2.5 hi flow cat and 2.5 piping all the way back, probably mated to an N1.

Import builders will do this service? Is this something I could have an exhaust/welding place do locally (it would save me a lot of trouble)? How much did this run you to get it done? Would you do it again?

any help appreciated, thx.