Alright so let me start off by saying I have a Greddy turbo kit on my RSX-S right now. As some of you know, Greddy turbo manifolds are notorious for cracking and sometimes require several welds over its life. Personally, I have never seen a Greddy manifold that has not been cracked/welded. For those of you familiar with the kit, the Greddy turbo is a T25 flanged turbo, equivalent to a Mistubishi 18G. This being said, I am extremely irritated with the manifold since mine has cracked. The design of the manifold makes it extremely irritable to remove the top exhaust manifold bolts, which can only be reached with an open end wrench. Due to this I have nearly stripped my bolt so I left it alone and Ill leave it for a shop to remove.

I have been looking at other manifold options and im only limited to one brand that is on ebay, Godspeed. After some research, Ive learned that ebay log manifolds are not only replicas of other manifolds, but even less prone to cracking then their name brand counterpart, showing me some light.

I figure instead of getting my Greddy manifold welded up and repaired I can swap the manifold with a Godspeed one: Click Here but my question is if anyone out there has successfully used this manifold as a Greddy replacement option.

The Greddy turbo has an internal wastegate and I plan on keeping it that way but there are several companies that offer wastegate flange blockoff plates so I can just add one of those and avoid a leak. My main worry is the placement of the turbo. Will the internal wastegate clear the manifold? Will the intake tube, intercooler piping and downpipe all fit like it did with the Greddy manifold?

TIA for anyone who responds to this

 

Well... you have 2 options here.

1. Modify the existing Greddy setup with new manifold
2. Ditch the Greddy setup and replace the majority of the hardware.

Assuming the internal wastegate DOES NOT clear...If I were you, I'd convert the Greddy turbo to an external wastegate. You'll need a new downpipe anyway because this manifold will position the exhaust differently than the Greddy (regardless of internal/external gate). Buy an external wastegate and have a reputable shop fabricate a new downpipe for both the turbo and the wastegate. You may need to fabricate a new compressor pipe as well depending on how the turbo is clocked with the new manifold.

At the end of the day, you'll have a better flowing exhaust setup but you'll still be limited by the Greddy turbo. I'd recommend buying a T3 manifold and a different turbo.

What are your goals? Are you just trying to fix the manifold and keep it running as is?

 

ugh thats what i DIDNT wanna hear lol

yeah its just my dd and im satisfied with it. i dont have a need/want to push more power in this car (fwd ftl). the reason i asked about the other manifold was because of the cracking and the method of removal. the two upper exhaust manifold nuts require an open ended wrench and im afraid of stripping the nuts. basically the manifold is an annoyance.

i dont want to switch this to an external wg setup because the wastegate swing valve needs to be welded inside the turbo. id rather get a new turbo instead of modding an old one

since youre saying that the placement of the turbo is in fact different then i am going to disregard this route and get my greddy welded. i was hoping for a direct replacement mani lol.

 

you dont need to do allt thatif your car is a dialy driver i have the same kit for my ep3 and i had the same problem i just got my manifold replace to a new one from ebay. i just had to buy a block off plate cause i have a manifold that gives me the option to use internal or external wastgate but i have the internal and i have no problem with the manifold i got from ebay. so just replace the manifold make sure it looks the same

 

nice

 

Which manifold did you get from ebay? Did it bolt right up to the DP? My buddy needs a new mani as well since his is cracked.

 

I just saw a brand new cast T25 flanged manifold on Clubrsx.com for $100 shipped.

 

i dont know what brand it is i just got what it said on the information. i had to customize my 3inch down pipe cause my buddy gave me his from his type s greddy turbo kit.

 

cast iron manifolds suck, do it the right way!

 

Yeah, with a sidewinder?

Okay let me just drop an extra $1-2k and rearrange my entire engine bay.

 

you dont have to rearrange your bay, just your intake if its not CAI...and you can get a fabworx sidewinder for $750, just dont use a 44mm WG, go with a bigger one like 46 or 60mm....

 

Says the guy who is NA...

I don't think you realize how much F/I components cost. Not to mention there is a lot more heat associated with a sidewinder compared to a cast manifold.

 

check sig son ....and thats what heat wrap is for!!!

plus you don't have to worry about the sidewinder cracking or breaking cuz you pushing too much psi....

 

yeah i already posted in that thread. i want to make sure this fits before i buy it. $100 isnt a much but its not an amount that i want to just throw away either
damn. i didnt want to hear that lol. i dont want to fav up a downpipe just for a new manifold. is there anyway you can verify the brand?
i said im satisfied with the power im getting and obviously i dont want to blow more money on this car

sidewinder - $750
turbo - $1,000+ (fabworx is t3 flange meaning new turbo)
wastegate - $250 iirc
downpipe - idk but its more money
oddessy battery tray - more $$$
oddessy battery - more dubloons
dumptube - $$$
another tune - $$$

so $2,500+ only to be limited by my stock fuel system minus the rc 750cc injectors which are too small for any t3/t4 turbos anyway and the odds of me blowing my trans is significantly higher, especially since my 2nd gear synchro is toasted.

so no, im not upgrading my turbo system. im looking for a direct manifold replacement to the greddy manifold and nothing else

 

its your car man, do what you want...but if it was my car, i'd do it right the first time...have fun keep replacing the cast iron manifolds...get the synchro fixed if your "that" concerned...its not that expensive, you should have some money left after you buy your cheap ebay manifold

 

do it right? in my mind i did it right. i dont need a 400+whp fwd freeway queen. ill save that for rwd

ill have fun doing replacing it and i never said i was that concerned, just that the added torque would make it blow faster. if the trans goes then oh well, ill just pick up another one because youre right, they arent that expensive. rsx's arent worth much anymore so i can justify spending so much money on this car anymore to get a fr or pb kit. if you cant answer my question then youre not helping.

fyi you mentioned fabworx. do you not realize thats an "ebay" manifold as well? congrats!

 

pb kits are garbage unless you like boost creep...fabworx is made by k20tuned, not ebay, check you facts bro, there may be fabworx manifolds for sale on ebay, but they are not ebay manifolds...

not to mention you don't have to run 400+ all the time...that's what boost solenoids are for...i gave you another suggestion for manifolds, so you don't have the same problem in the future, like i said its your car do what you want, i dont care if you spend a **** ton of money by keep replacing parts or not fixing something that should be fixed in order to properly run what you want to run...its a sychro now, it could be a tranny later...and they are not cheap, synchro's are....

and 400+hp freeway queens, you do realize people race these freeway queens as you like to call them...if you really think people build these cars to have that kind of power just to dd, you are an idiot...not everyone wants to "just" dd their k20 like you

 

You guys just have different goals, leave it at that. Personally I LOVE a nice well built 300hp DD rather than a 450+ dyno/highway queen. It's my preference, who cares.

It's all good, so long as we have boost

 

I am confused why individuals still think cast-iron manifolds are bad? My GReddy manifold is still going strong with no signs of cracking. I hear of individuals having issues with the GReddy manifolds and I sometimes question the integrity of the installation and attention to detail.

GL with your searches in replacement. I would try finding another GReddy manifold since you already know it will mate perfectly.

 

I had a DRAG cast manifold on my Integra for 3+ years of hard abuse with NO problems

 

i don't think they are bad...i just don't trust unknown manufactures...i have seen pictures of too many people buying ebay manifolds and have them crack or break...hell one of our locals got a ebay manifold and it was delivered with a hole in it, i just think it would be a smarter decision to go with a sidewinder....that is all...and i still love your setup johnny, i know you will love the extra boost with that turbo

 

Yeah, if I ever get it on, lol. Not sure if i'll be ready for this Friday. Too many variables right now brother. Are you planning on purchasing some slicks?

 

check the other thread, i answered it in that one lol...