Ask the Engineer at CorkSport

[maddocx240]

yeah a few people have been having issues with the welding on your fmic..i only only know of the ms6 guys, dont know about the ms3.. one guy even said the ones you sent him as a replacement leaked as well.. i have the ram air fmic on my ms6 and have no issues but others arent so lucky.. and another complaint was the silicone coupler for the hotpipe on the fmic being too small (which it is btw) where you have to use the stock turbo tube which has the better bend, that needs to be corrected as well..

[breakfstincluded]

vvvvvvvvvttttttttttt

[LittleredMPS]

VVT would be awesome.

As completely out there idea...Strengthened gears sets, shafts, and synchro's for the Aisin gearbox, either straight cut for the power mad people, or angled teeth for the people who dont want to be deaf.

[silvapain]

Originally Posted by LittleredMPS VVT would be awesome. As completely out there idea...Strengthened gears sets, shafts, and synchro's for the Aisin gearbox, either straight cut for the power mad people, or angled teeth for the people who dont want to be deaf.

I've not heard of anyone having thrust bearing issues in the transmission, so I don't think straight-cut gears are necessary.

Better synchros would definitely be nice though.

My understanding is that this thread is supposed to be about gleaning technical info from a product engineer, not suggesting new products.


Tapadatass

[K7addict]

I was recently reading a thread about hood venting to include the installation of hood louvers to obviously assist in heat management and someone mentioned NACA ducts.

I started thinking about the function of NACA ducts and why it wasn't more common to see them used in a ram-air capacity straight to a SRI or to a cold air box. Well, during my interwebz research, I came across a thread talking about exactly that. (I knew I wasn't that smart, lol) Here's the thread Hood Scoop for Mazda3 - 2010 Mazda 3/Mazdaspeed 3 Forums And lo-and-behold, Corksport is the OP.

Is this something (NACA duct to ram-air or to cold air box) that is still viable in Corkpsport's line of products? Can a kit be made at a relatively low-cost for the consumer to install themselves?

I tried researching and understanding air flow/pressure/etc and how it relates to the effectiveness of NACA ducts but I'm a noob. Are NACA ducts beneficial to the DD, Autox or Drag?

If a naca duct is beneficial, I'd love to try to install one (over the SRI) for any benefits as well as aesthetics (because racer).

[silvapain]

I'd like to know if CorkSport did any wind tunnel or other testing (with pitot tubes or something similar) to show if their FMIC kit that uses the stock TMIC location for the intake provides enough pressure and airflow for the intake.


Tapadatass

[CorkSport]

Originally Posted by silvapain My understanding is that this thread is supposed to be about gleaning technical info from a product engineer, not suggesting new products.

True but I really like to talk about anything.

[breakfstincluded]

How about gwynns dating availability?

[kritz]

Originally Posted by silvapain I'd like to know if CorkSport did any wind tunnel or other testing (with pitot tubes or something similar) to show if their FMIC kit that uses the stock TMIC location for the intake provides enough pressure and airflow for the intake. Tapadatass

Henry Pitot was always under pressure(static) lol a very bad joke.

[CorkSport]

Originally Posted by silvapain I'd like to know if CorkSport did any wind tunnel or other testing (with pitot tubes or something similar) to show if their FMIC kit that uses the stock TMIC location for the intake provides enough pressure and airflow for the intake.

No wind tunnel testing but there was plenty of testing for variations in fuel trims. Many tuners have told us that it adds top end when doing street tuning. This is very hard to simulate on a dyno, unfortunately.

On another note, I did have some rough ideas for intake manifold designs that I've been drawing. I will try to post them up later this week.

Originally Posted by breakfstincluded How about gwynns dating availability?

That is between you and Gwynne.

[CorkSport]

Any one interested in technical questions? We do test the cars in many various ways and log many various things. If we haven't test it we would like some input on what to test.

And yes that is my gt4088r drinking a fat tire.

[Code Monkey]

For road racing (HPDE etc), do you prefer bigger sway bars and softer springs or smaller sway bars and stiffer springs?

[snailD]

question about future products i may buy from you depending on how it affects the car. the stock gen2 handling is awesome and i love it, very predictable, but i might like the back end to swing out a little bit more. would the stiffer rear sway bar be what im looking for? would the rear trunk bracing have any effect on it?

[kritz]

Originally Posted by snailD question about future products i may buy from you depending on how it affects the car. the stock gen2 handling is awesome and i love it, very predictable, but i might like the back end to swing out a little bit more. would the stiffer rear sway bar be what im looking for? would the rear trunk bracing have any effect on it?

Yes and Yes, Get some springs and dampeners too if possible.

[snailD]

Originally Posted by kritz Yes and Yes, Get some springs and dampeners too if possible.

i can only get one item at the moment. racing around miller motorsports park sept 12th so i would like to get the best option and test out how the car reacts a bit before then.

i assume the rear sway would be the best option

[kritz]

Yes^^^ the front strut tower bar also will be palpable.

[TiGraySpeed6]

Generic Handling Thoughts-

Some quality time getting your tire pressures sorted will help substantially, and not cost a dime. Here's a decent reference to look over- Tire Tech Information - Air Pressure for Competition Tires

A good alignment is worth it's weight in gold, might require parts if your rear camber isn't adjustable

And don't overlook the classic Driver Mod! Cornering speeds and hitting your marks spot on can make a big difference, as will throttle control. Amazing what a quick lift of the throttle will do to turn understeer into oversteer.

In general, defining the optimum configuration of what you have to start from can help outline goals, the parts needed to achieve them, and to define degrees of success at meeting them.


Or just get a RSB to help stiffen up the ass end....

[helmetface]

Originally Posted by snailD question about future products i may buy from you depending on how it affects the car. the stock gen2 handling is awesome and i love it, very predictable, but i might like the back end to swing out a little bit more. would the stiffer rear sway bar be what im looking for? would the rear trunk bracing have any effect on it?

Trunk brace would have some effects.

But to swing out your ass a bit harder is going to require: lipstick, eye shadow...NO!

I kid..You need to get an RSB, very stiff spring rates(on coils you need to maximize the dampers) and make sure your stance is proper.

[IMASA]

Regarding your gen1 FMIC SRI kit, can you confirm fitment with other SRI's? I have a CP-E SRI but plan on getting a SURE 3.0" MAF housing.

[snailD]

Originally Posted by helmetfail Trunk brace would have some effects. But to swing out your ass a bit harder is going to require: lipstick, eye shadow...NO! I kid..You need to get an RSB, very stiff spring rates(on coils you need to maximize the dampers) and make sure your stance is proper.

i can only get one item, so would getting the rsb without anything else even be worth it?

[helmetface]

Originally Posted by snailD i can only get one item, so would getting the rsb without anything else even be worth it?

RSB would be your best move imo

[CorkSport]

Originally Posted by snailD question about future products i may buy from you depending on how it affects the car. the stock gen2 handling is awesome and i love it, very predictable, but i might like the back end to swing out a little bit more. would the stiffer rear sway bar be what im looking for? would the rear trunk bracing have any effect on it?

Originally Posted by kritz Yes and Yes, Get some springs and dampeners too if possible.

This of course is the correct answer but if you can indeed only do one I would vote for the RSB too. But I generally put swaybars on all my cars before even doing springs.

So I prefer stiff swaybars and softer springs. But too each their own.

[CorkSport]

Originally Posted by IMASA Regarding your gen1 FMIC SRI kit, can you confirm fitment with other SRI's? I have a CP-E SRI but plan on getting a SURE 3.0" MAF housing.

I know the FMIC works with the SURE intake but it pushes up against the pipe. I was told the CP-E works aswell but with similar issues. So you will not need to get a new intake but after a few years you might need a new filter.

[Tabasco69]

got 3 words for you "billet fuel rail", that is allI 'am going say here

[CorkSport]

Originally Posted by Tabasco69 got 3 words for you "billet fuel rail", that is allI 'am going say here

For what car? Wouldn't work great on a speed3 or speed6.

I made up an intake manifold idea. Nothing is based on actual dimensions. I was just wondering if anyone had interest in something like this? And hopefully it will spur a intake manifold design conversation.

[Tabasco69]

fuel rail for non dis mzr, we been here and done that


there are like at least 100 ms guys on here who have been begging for a better - eqaulized flowing IM, where have you been lol.

[kritz]

I have the product name.......BPIM( bag pipe intake manifold )and yes would be interested, but I think more of a funnel shaped chamber with the velocity stacks would work better.

[Tabasco69]

They want something like the cosworth manifold, nice big plenum, runners with velocity stacks/trumpets

[CorkSport]

Originally Posted by Tabasco69 fuel rail for non dis mzr, we been here and done that there are like at least 100 ms guys on here who have been begging for a better - eqaulized flowing IM, where have you been lol.

I've been listening. It's just hard to find time to start a project of this magnitude.

The whole thing is built using splines instead of lines and fillets. This makes better flow and easier to change and flow test. The plenum is also built out of splines and revolved. It will be easy to change to make the flow even at each runner.

The cosworth design is close to what it would look like but would have to fit the stock location (So it works with all of our products. IE FMIC, TMIC, etc) so it would look different and would probably have a larger plenum. Optimize the runners for a slightly higher rpm. Nothing crazy but it should increase power on the top end a lot to match the massive torque these cars seem to make.

[Tabasco69]

I think the hard part (engineering and r&d) have already been finished for the most part, there is a finished prototype, what they need is a company who will actually produce the manifold, instead of sitting on it indefinitely with little interest because they are dealing with other platforms that aremore lurative to them.

That is the current situation, they have basically designed a intake manifold that people are willing to buy but the lack production capability.

link SilverDemon/JM Fabrications Intake Manifold Interest Thread

STATS:

OEM Manifold after porting (32 cfm differential or about 16%)
Runner 1) 212
Runner 2) 239
Runner 3) 233
Runner 4) 207


SiverDemon's Intake Manifold (8 cfm difference or about 2.9%)
Runner 1) 274
Runner 2) 281
Runner 3) 282
Runner 4) 278

[CorkSport]

Well I see a number of reasons I wouldn't copy that manifold. And I would cast it since we can already cast parts.

I will start the long process of making my own but it will take awhile.

Originally Posted by Tabasco69 I think the hard part (engineering and r&d) have already been finished for the most part, there is a finished prototype, what they need is a company who will actually produce the manifold, instead of sitting on it indefinitely with little interest because they are dealing with other platforms that aremore lurative to them. That is the current situation, they have basically designed a intake manifold that people are willing to buy but the lack production capability. link SilverDemon/JM Fabrications Intake Manifold Interest Thread STATS: OEM Manifold after porting (32 cfm differential or about 16%) Runner 1) 212 Runner 2) 239 Runner 3) 233 Runner 4) 207 SiverDemon's Intake Manifold (8 cfm difference or about 2.9%) Runner 1) 274 Runner 2) 281 Runner 3) 282 Runner 4) 278

[DiGi Faggot]

IMO, I wont buy any Manifold that doesn't have Port Injection. SilverDemon's planning on having Port Injection in the future.

Any IM I buy just needs the port injection bungs. They can be plugged or what not, but atleast has the bungs.

[Tabasco69]

it is not that hard to retro ports if you want to go that route later on

[802MS3]

@Brydon@CorkSport

are you guys aware of any fitment issues with the corksport downpipe and the ATP bolt-on GT series turbos? I had to hack off about 3/4" off of the divider for the divorced wastegate pipe to actually get it to bolt up. Now I just realized that the wastegate flapper is actually blocked from opening fully (actually took the arm off and tried to move the flapper by hand, only opens about a half an inch). I do have a pretty early downpipe, its probably 3.5 years old.

[CorkSport]

Originally Posted by 802MS3 @Brydon@CorkSport are you guys aware of any fitment issues with the corksport downpipe and the ATP bolt-on GT series turbos? I had to hack off about 3/4" off of the divider for the divorced wastegate pipe to actually get it to bolt up. Now I just realized that the wastegate flapper is actually blocked from opening fully (actually took the arm off and tried to move the flapper by hand, only opens about a half an inch). I do have a pretty early downpipe, its probably 3.5 years old.

I have not tried the downpipe with that large of a turbo. I could imagine the exhaust housing being much fatter causing fitment issues. The downpipe was made off of a stock setup but when we get around to upgrading to larger turbos we will be finding all of these little issues out. Thanks for the heads up.

Could you use the larger gaskets to make the wastegare open up all the way?

[802MS3]

Originally Posted by Brydon@CorkSport I have not tried the downpipe with that large of a turbo. I could imagine the exhaust housing being much fatter causing fitment issues. The downpipe was made off of a stock setup but when we get around to upgrading to larger turbos we will be finding all of these little issues out. Thanks for the heads up. Could you use the larger gaskets to make the wastegare open up all the way?

larger gaskets? I'm just using the factory gasket at the moment.

I believe the actual problem is that the divorced pipe for the wastegate is too small for the bigger ATP wastegate flapper to fit into. Though I didn't mesaure the size of the flapper while they were both off the car. I don't get any boost creep, but I doubt its optimal exhaust flow. Probably going to switch to a bellmouth design in the next couple weeks.

[ABolewski]

Gunna bump for a similar question as @802MS3;.

A question for a tuner that's dealt with this, as well as Brydon.
When I bought the downpipe (specifically the catted long pipe option) you guys had a document on the product page talking about why you made it divorced instead of a bellmouth design (It doesn't seem to be there anymore?). It talked about basically allowing for a faster spool, offering a slight amount of increased pressure after the turbo if I remember correctly.

Will the characteristics be the same for my GTX3076? i.e. faster spool?
What I'm afraid of is the downpipe not flowing enough in the higher RPM's.
I should be well over 500 whp, and I hope to get close to 600whp with my setup, (with your cams ) do you guys think your downpipe will support this kind of power, or should I get a bellmouth design?

As for fitment, I was going to try to "reverse" the divider that goes into the hotside, to allow a more consistent flow for the exhaust. If that doesn't work I'll just leave it as is since I'm EWG anyway.

Also cat will be removed and replaced with a resonator.

Thanks!

[802MS3]

Originally Posted by ABolewski Gunna bump for a similar question as @802MS3;. A question for a tuner that's dealt with this, as well as Brydon. When I bought the downpipe (specifically the catted long pipe option) you guys had a document on the product page talking about why you made it divorced instead of a bellmouth design (It doesn't seem to be there anymore?). It talked about basically allowing for a faster spool, offering a slight amount of increased pressure after the turbo if I remember correctly. Will the characteristics be the same for my GTX3076? i.e. faster spool? What I'm afraid of is the downpipe not flowing enough in the higher RPM's. I should be well over 500 whp, and I hope to get close to 600whp with my setup, (with your cams ) do you guys think your downpipe will support this kind of power, or should I get a bellmouth design? As for fitment, I was going to try to "reverse" the divider that goes into the hotside, to allow a more consistent flow for the exhaust. If that doesn't work I'll just leave it as is since I'm EWG anyway. Also cat will be removed and replaced with a resonator. Thanks!

I wouldn't advise putting the corksport downpipe on an ATP hostside. Save yourself the trouble and change to a bellmouth design until CS addresses the issue. AFAIK, they don't even know that its an issue, so I doubt its been addressed.

[ABolewski]

Originally Posted by 802MS3 I wouldn't advise putting the corksport downpipe on an ATP hostside. Save yourself the trouble and change to a bellmouth design until CS addresses the issue. AFAIK, they don't even know that its an issue, so I doubt its been addressed.

Are you referring to the fitment issue?
That doesn't bother me, first off I'm EWG so the IWG flapper is non existent, and second I plan on modifying it anyway. I'm more curious as to what type of horsepower it can support mostly with it's smaller diameter piping it uses for the first 10 inches or so.

[802MS3]

Originally Posted by ABolewski Are you referring to the fitment issue? That doesn't bother me, first off I'm EWG so the IWG flapper is non existent, and second I plan on modifying it anyway. I'm more curious as to what type of horsepower it can support mostly with it's smaller diameter piping it uses for the first 10 inches or so.

I would still ditch it. What point is there to run a divorced wg downpipe without the wg inside of it?