Split Second Motorsports "Fatty" Intake manifold.

[TUFFTR]

Looks like a superb product for an unreal price. Have been told from Chatz that this fits under the stock hood aswell even on a 3.5L! (which is excellent to know!)

I know I'm taking a stab in the dark here, but does anyone else have one of these? Can you provide any feedback on the product? If I got this I'd be using there lay-a-way system so I wouldn't have it until xmas time, but hell who cares.

The manifold looks the goods with a mucher bigger end tank, port matched TB opening and shorter runners (for themz high RPMz :D)

Just yes, before I lay down the cash would like to get some feedback, hopefully someone else has one!
(N/A 3.5L fyi)

[GTwizard]

TUFFTR
That is nice, But that's a lot bones.
For that price you could fab your own.
There are a ton of runners that fit these motors in the bone yards. Fat short ones from NA and longer tube VR4 stylr runners.Get the runnes extrude honed if you wish for larger.
Now for a Plenum. I use 4.00 OD alminum pipe. That's a full 2 liters. Not costly at all. For a throttle body I used a 3 in. (75 mm) Cobra Mustang. They are like $99 buck on Ebay, and 1/5 the weight of that CNC billet 70mm. An Adpator plate from Nippon. and off the welders.
If you use 2 adapter plate as I, you can always have the ability to try any throttle set up any time.
http://i498.photobucket.com/albums/rr343/GTwizard/S6305053.jpg
http://i498.photobucket.com/albums/rr343/GTwizard/S6305051.jpg
http://i498.photobucket.com/albums/rr343/GTwizard/S6305048.jpg
I have pics of a stock manifold modded for that CNC billet throttle body if you wish for pics of it.
Or make a box and use NA runners
http://i498.photobucket.com/albums/rr343/GTwizard/S6303905.jpg

[Keyan]

That red manifold is a next generation Motor sports plenum for a tiburon.

[Droid X via Tapatalk]

[DrkZide]

I wonder why nobody has tried making an LSX style manifold that tucks nicely into the valley.

[GTwizard]

Yes that for our Tib. It's a really good power adder. It was at NG10. That was the Tib that beat VR440sealth. LoL. VR440 red lighted.
Here is a pic of a VR4 intake I just did for that CNC 70 mm throttle body.
http://i498.photobucket.com/albums/rr343/GTwizard/S6307324.jpg
http://i498.photobucket.com/albums/rr343/GTwizard/S6307327.jpg
http://i498.photobucket.com/albums/rr343/GTwizard/S6307329.jpg
http://i498.photobucket.com/albums/rr343/GTwizard/S6307278.jpg
http://i498.photobucket.com/albums/rr343/GTwizard/S6307286.jpg

[TUFFTR]

Wizard - Reason I opted against the Mustang TB Is I simply wanted something that bolted on out of the box that utilized all of the OEM sensors. I had already started dicking around with an XF falcon TB (1988ish in australia) which you can get from the wreckers for $20 or so but the amount of work in involved was enough for me to leave it.

I mean, If I was to utilize stock NA runners, what would it cost for an aluminum welder to put it all together? That's why this option appeals to me. Ready to go, nice looks, bolts up, I don't have to worry about a thing. I'm getting to the stage with this car now where customizing every single thing that goes on the car is appealing less and less to me.

I doubted anyone would of had one of these intakes, but thought I'd try! Now with an N/A engine, for high RPM applications, What is the proffered runner length and end tank size?

[GTwizard]

As far as runner legth and plenum size. Really depends a lot on your gearing and what type of racing you are doing. Where is it that you want the power band. Plenums are most times 1/3 the total displacment, or 1 liter for 3 liter motor. This maintain good plenum velocities. So too large can hurt. I am using 2 liters for testing and so far like the reasults. I could have hurt my power and my be why my torque is low. I just have to do more testing to find out.
There are formulas to calculate lets say Max power at 9000 RPM. But the bottom line will be trying to tune to your intake and to your exhaust. Finding those sweet spots with adjustable cam gears.
It is always going to be trial and arror. 1 thing that is most over looked is the exhaust. Following the BMW M5s in prep for racing. They will drop the 3.in exhaust and bolt in a 2.75 system. This hurt their top end just a little, But through the turns on the track they had Gobbs more torque to play with and ended up with better overall track times. That CNC throttle body is a nice bolt on. But still need to mod the opening of the intake to use it.

[TUFFTR]

As far as runner legth and plenum size. Really depends a lot on your gearing and what type of racing you are doing. Where is it that you want the power band. Plenums are most times 1/3 the total displacment, or 1 liter for 3 liter motor. This maintain good plenum velocities. So too large can hurt. I am using 2 liters for testing and so far like the reasults. I could have hurt my power and my be why my torque is low. I just have to do more testing to find out.
There are formulas to calculate lets say Max power at 9000 RPM. But the bottom line will be trying to tune to your intake and to your exhaust. Finding those sweet spots with adjustable cam gears.
It is always going to be trial and arror. 1 thing that is most over looked is the exhaust. Following the BMW M5s in prep for racing. They will drop the 3.in exhaust and bolt in a 2.75 system. This hurt their top end just a little, But through the turns on the track they had Gobbs more torque to play with and ended up with better overall track times. That CNC throttle body is a nice bolt on. But still need to mod the opening of the intake to use it.

I don't do much racing at all *cough maybe a bit on the freeways cough*. Gearing is the standard 12v SOHC V6 5sp FWD gearbox. I want my powerband from around 3500RPM upwards.
I will need to do a bit of googling to find a calculator that can give me a rough result of what I'm after. And Yep, always trial and error! My exhaust system is nothing fantastic but does the job. downpipe > 3" high flow meow meow > 2.5" mandrel bent to the rear axle, then splits to each side with 2 x 2" piping (press bent) to 1 redback muff each side.

I am more-so a straight line person right now but I really just want to get the best out of this engine, doing it right, but on a mild budget (i.e. not uber cheapskate)

Personally, from your viewpoint, would the fatty manifold be suitable?

[GTwizard]

I would love to bolt it on and run with no orther changes. I do like what I see so far. I just wish I could look down it's throate. I would like to see how the face of the tubes were welded.
Would also like to see the runner ends to see how they match up to our lower runners. I vote for you to get it and let us know your real world reasults. LOL. What RPM do you shift at?

[TUFFTR]

I would love to bolt it on and run with no orther changes. I do like what I see so far. I just wish I could look down it's throate. I would like to see how the face of the tubes were welded.
Would also like to see the runner ends to see how they match up to our lower runners. I vote for you to get it and let us know your real world reasults. LOL. What RPM do you shift at?

ha! I'll ask Chatz to post some more pictures....right now on the 3.5L about 7000/7100RPM

[TUFFTR]

Also, can I ask for pictures of the runners from inside the TB opening?

[TUFFTR]

Correct although they ran MIVEC heads, so not sure if the manifold was designed for the much bigger heads? (Same as the 30M heads you have)

Would love some/any information on that car/engine, not much exists :(

[TUFFTR]

I'm not fussed with lost low down torque. When your trying to eat LS1's only 3500RPM> really counts :P
And there is not that much hieght under the bonnet. Strut brace JUSt touches the hoodliner, I probably have 1.5" before the standard manifold would touch the hood liner.
That's why I just want to confirm measurements

[Chatzvr4]

I would love to bolt it on and run with no orther changes. I do like what I see so far. I just wish I could look down it's throate. I would like to see how the face of the tubes were welded.
Would also like to see the runner ends to see how they match up to our lower runners. I vote for you to get it and let us know your real world reasults. LOL. What RPM do you shift at?

The base of the runners is a cnc flange.Built to gasket. I would recommend porting the lower runners to gasket as well. But they do match up perfectly to the 6g72 lower runners. as for the 74 runners it is not the same but the we made the base plate and runners thick enough to allow for bore them out to suit the round style lower base.Our runners are shorter but they are larger runners. tank side runner plate is also a machined plate which was welded from the outside as well as the inside. here is a picture of the base.
http://www.splitsecondmotorsports.com/SSM/fatty3.gif
and of inside the tank
http://www.splitsecondmotorsports.com/SSM/fatty4.gif

[TUFFTR]

Thanks Chatz and Steve, Although steve that doesnt give me a very good idea of anything lol.

Chatz, I am sorry for breaking your balls here, could you put this manifold next to a standard NA manifold from the side so I can see the height difference?
And, any dyno proof or even seat of the pants stories? Anything lol.

[Chatzvr4]

It's only the pajero 74 lower plenum that has round (different shaped) holes. The lower plenum from the FWD 74 motors has the correct shape holes for a FWD / AWD intake manifold.

Steve

actually its not just the pajero the 4x4 montero has the round plenum base also.

[Chatzvr4]

Thanks Chatz and Steve, Although steve that doesnt give me a very good idea of anything lol.

Chatz, I am sorry for breaking your balls here, could you put this manifold next to a standard NA manifold from the side so I can see the height difference?
And, any dyno proof or even seat of the pants stories? Anything lol.

the only guys that i know that have this plenum all did more then just a plenum upgrade. We usually sell it when they are buying td05 or t3 setups. so we do not have much to go off of.

[SOHC]

I didn't want to make a new thread so I'll post here. I found a different plenum for a SOHC and it seems better than the stock one. will it be worth getting this plenum and swapping it for the stock one. Can you tell if its better just by looking at it?

91 95 MITSUBISHI 3000GT STEALTH ENGINE SOHC 3.OL 6G72 | eBay (http://cgi.ebay.com/ebaymotors/91-95-MITSUBISHI-3000GT-STEALTH-ENGINE-SOHC-3-OL-6G72-_W0QQcmdZViewItemQQhashZitem4aaa26af36QQitemZ32068 2241846QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccesso ries)

Here's stock.

http://carphotos.cardomain.com/ride_images/3/2552/4761/31379880015_large.jpg

Both of them have the same pattern 00 00 00 so it should fit fine.

[TUFFTR]

without the ECU to support the electronics of the variable intake runners its not a good idea.