For those of you who have had experiences (good or bad) with turbo exhaust manifolds from Full-Race and from Inline Pro, can you please share your experiences? I'm upgrading from my Ultimate Racing manifold and turbo, and welcome your thoughts with respect to the following:

Vibration - Do you notice different engine harmonics after installing your turbo setup / suspect your manifold as a contributor? I added a brace connecting the back of my T3/T04e turbo to the block in order to support it better, and that greatly reduced the vibes I felt through the steering and pedals at cruise (3000 - 5000 RPM) and at higher rev ranges.

Boost Creep - Do you have any problems regulating boost? Some manifolds are reputed to have issues managing boost (causing spikes or higher-than-desired boost levels) since the S2000 flows so much air.

Robustness - How long (miles, long trips, road race sessions, whatever) have you been driving your turbo setup, and have you had any durability issues (cracks, breakage, bolts backing out, etc.) that resulted. Goal here is to attain same level of reliability/fit/finish as if Honda itself had done the design / will last 200K miles. Any issues of melting the water bottle that resides in the passenger side fender? Also please note any manifolds that would preclude the use of A/C.

Power - What kind of power are you making with your given setup? Stock-block with 2-3 mm headgasket or sleeved 9.0:1 compression monster build, head porting, etc. Please share peak HP/TQ as well as the curves if possible, as well as when you noted peak boost with a given setup and whether that held all the way across the RPM band.

Turbo - What turbo (GT3071R, GT3076R, GT35R, T3/T04e, etc.) are you using, and what exhaust A/R ratio (common ones are .63 for quick spool or .82 to breathe better on top end)?

As context for the type of info I'm seeking, here are some of my goals / build. Laskey Racing bottom end with 9.0:1 CP pistons, Benson-sleeved 2.0L short block, Pauter rods and Laskey's (PortFlow) Stage 3 porting, titanium retainers. Usage is for autocross and some road racing, so I'm interested in quick-spooling and midrange torque first (5.5 K torque peak) as a priority, and all-out numbers in the mid 4s -- 420 - 450 RWHP on 92 octane.

The autocrosser in me leans toward the GT3076R and InlinePro setup, but the road racer & drag racer (yes, I'll be upgrading the diff) is tempted by the GT35R's compressor efficiency plus the Full-Race manifold's extra HP.

All ideas welcomed. Apologies if this post is in the wrong place, but I'm trying to decide whether to upgrade my existing Ultimate Racing log-style tubular manifold with the cast Inline Pro manifold or the tubular Full-race manifold (and required $350 wastegate) for 3x the price of the Inline. Already have a 38mm wastegate which can be reused by the Inline setup, but I have to buy a 44 mm for the Full-Race.

Thanks,
Stanford

 

What about customer service? i went with inline and let me tell you i do not regret it at all. i made 460whp and 285tq @ 16 Lbs of boost i am running a gt35r with the 3mm headgasket. head studs valve springs and retainers. friday i had premature turbo failure from an unknown reason i called inlinepro today and i must say i feel much better about my situation. goodluck

 

Sounds like your goals are very similar to mine. I went to Inline and told them exactly what I wanted:

1. RELIABILITY
2. Daily drivability. (It's my only car)
3. Autocrossing biased response. (Fat mid-range, quick spool, but still lots of top-end power).

They basically built my car to order and I couldn't be more pleased. They suggested the GT3076R with the B compressor housing (no frame notching necessary) and the 0.48 A/R turbine housing for rediculous spool/mid-range. Take a look for yourself:



You may be concerned with the torque drop off at the top end, but rest assured, it is NOT because of the turbo selection but rather the ultra-restrictive HKS exhaust. (But it sounds soooo good). Here is a comparison of my GT3076R @ 19 psi and a GT35R @ 18 psi. Same kit, same tuner, same dyno, etc.



As you can see, the peak power is similar (reflecting the similar top end restriction of the HKS exhaust) but the mid-range is anything but identical. Both setups would gain 30+ rwhp with a 3" single alone.

Far and away the best thing Inline has going for it is the customer service. I know that whatever issues I encounter, and I don't forsee many, they will have my back. It's their kit, their work (they installed and tuned the kit), their reputation, and the really stand behind their customers.

You WILL make more power per pound of boost with Full Race. The manifold design is much less restrictive and you could arguably call it a "better" design, but the Inline manifold is more than capable of producing the same power numbers, just at slightly higher boost pressures. That and you could beat the crap out of it and it's not goint to break. MUCH better heat management as well due to the cast thick cast iron design.

Two thumbs up from this happy customer.

 

Have you thought about Lovefab?

 

Thanks Guys -- it's really an interesting paradox. Could be fun to just throw on a GT35R and an Inline Pro cast manifold for less than the cost of the Full Race manifold and 44 mm wastegate. After reading through all the FI section, I'm impressed with everything Inline's done with 3 mm head gaskets and big boost on the stock bottom end.

If I can afford it, the most efficient HP/lb ft per PSI option does sound like the Full Race, and I could probably get 450ish with a GT3076R (.82 A/R) and my PortFlow/Laskey head, while keeping pretty reasonable spool up characteristics. If I do this, and want to upgrade power levels later I guess I can sell the GT3076R and bolt in a GT35R.

I'll probably find a way to brace the turbo from beneath just to reduce the resonance/NVH of having a 20 lb turbo hung off of what amounts to a spring (manifold). This was a big help reducing the steering wheel / brake pedal tingle that my Ultimate Racing T3/T04e setup had before I braced it. FWIW, the UR intercooler pipes do clear the Comptech adjustable front swaybar, but you'll need to re-route the pipe that goes into the intake if you use the Koyo radiator (fan brace interference).

Please keep the ideas coming. Is anyone using 750cc injectors or is there a better setup to use on the S2000 / AEM EMS setup? Would I need special equipment to put in 880 or 1000cc injectors (planning for the future).

Thanks,
Stanford

 

I actually had the UR gen II setup on my old car, it made some good power after installin the HG but i got tired of a log manifold. And promised myself if i ever do it again i'll go equal length all the way.
So i decided to go with a 3076r
And fullrace manifold.
Good luck with whatever you choose and keep up updated.

Marcus

 

Marcus, can you share more about your setup please? Please let me know if your GT3076R has the .82 A/R housing, what kind of boost you run, what kind of HP and torque you have, what RPM you get ~ 10 PSI by (and what RPM you get full boost by). Really appreciate the help.

I'm sold on the Full Race manifold, but am now trying to decide between the GT35R and the GT3076R. Since my motor's built for worst-case (sleeved, good rods, Stage 3 head porting, etc.) I feel like I'm not using its full potential if I go with a GT3076R and the blower runs out of efficiency (hot air / over-rev). Guys running stock block with head gaskets are rolling 430 nowadays: https://www.s2ki.com/forums/index.ph...c=486890&st=25

(That thread mentions .63 A/R on his setup -- very impressive HP & TQ numbers of 431/290)

...so I'm wondering if I get a GT35R how much softer it will be before 6000RPM vs. the GT3076R and how much more I can expect on the big end.


Thanks,
Stanford

 

Well Standford my car currently is stock i ordered this kit like a month and a half ago am still waiting on it.
It got held up because i was thinking about gettin a gt35r but from people and my tuner Jeff Evans told me that FullRace has had nothing but boost creep issues with the 35r
Unless you install a 60mm wastegate or run two wastegates
So i decided to settle for the 3076r and 490 whp.
I would have liked getting a gt35r and making 490whp at like 13 psi or some ridiculous number but i didnt want the headache of boost creep.
Rest assure after i install and tune my car i will post numbers.

Marcus

 

Im just intrested to see if there are any new numbers/dynos made since this old thread were around? Any tubular is welcome to be compared ofcourse.
I will have my ILP kit shortly and will try make a custom tubular to replace the cast one with. Any advice on this one? Any nono's? And to do's?

This is not my idea to start any war here, I am just looking for some facts.

What I think most people can agree with is.

1. A manifold with less flow restrictions will make more power out of the same boost in the same application as one with more restrictions. (Other parameters close to or equal)

2. Inlinepro cast type mani is something in between a log and tubular. Call it what you want.

3. For maximum efficiency in the turbosetup, reducing manifold flow restriction is good.

4. A well made tubular is the manifold type with the lowest flow restrictions. (As I know of at least)

5. Without lowering the compression, It would be easier to reach a certain amount of power with a tubular manifold. Taken into account that wastegate operation is satisfactory. Higher boost for the same power means more risk for early detonation of fuel(spiking/knocking(not boostspike)) which also means gotta tune richer to be safe. Biggest risk at peak torque levels.


Input very welcome!

 

Bumpetibumpbump

Still very anxious to know more about this.