Sprintex 335 Testing & Progress

[sam69]

Originally Posted by moto-mike

There's something else. We have something cooking here that looks to be quite a nice alternative.

More info Pleeeasse

Mike could the 90mm LS2 TB be made to work do you think ?

[smudge]

Originally Posted by moto-mike

There's something else. We have something cooking here that looks to be quite a nice alternative.

Feel free to elaborate

[tirespin782]

Originally Posted by dwx

I was kind of curious about the throttle body size as well. I have one of the TRD S/Cs (not twinscrew, but TVS 1320), and the kit Magnuson/TRD developed uses a 15mm larger than stock TB (stock is 65mm, the kit uses an 80mm TB). It's a roots blower but similarly sized to the Sprintex 335.

I've always looked at the IC as being the restriction with the Sprintex kits, but maybe that's not accurate.

People put filters in the engine bay because it's easy, although the Sprintex kits re-use the stock airbox so it shouldn't really be necessary.

Originally Posted by cdrazic93

Ok so, here's the deal. The TB isn't small for this car, at all. If it was restrictive beyond 300whp don't you think there would be more options other than JUN and Cusco? Others who have torn this motor apart and critiquing it, not once by FBM, MAP, Full-Race, JDL, or any of the tuners have said anything about the TB.

I would side with the OEM regarding TB size. They possess more resources than any aftermarket company.

Additionally, the LS3, which has about 430hp (close to this kit's output), has a 90 mm throttle body. The 997 has around 400hp and a 82mm throttle body as well. The Ford coyote motor had a little over 400hp and also a 80mm throttle body. And seeing these air pumps are "pulling" air through their respective orifices, an argument can be made this kit really needs a throttle body at least 80mm to achieve optimal output. I'm sure more google searches for performance NA motors with similar power output would show similar throttle body sizes. So there it is: TRD, GM, Porsche, and Ford thought it was a good idea for motors with outputs around 400hp to have TBs at least 80mm.

[sam69]

This one is 85 mm and compact and from what I can find has an 8 pinout but still might be able to be adapted but someone with more knowledge than me might chime in . http://www.stage3motorsports.com/182...ttle-Body.html

[Xero-Limit]

Originally Posted by sam69

This one is 85 mm and compact and from what I can find has an 8 pinout but still might be able to be adapted but someone with more knowledge than me might chime in . http://www.stage3motorsports.com/182...ttle-Body.html

There will be a limit to how big you can go with the rear elbow that comes from sprintex. So 3" is doable, beyond 75mm I think it will be tough to adapt it without making a custom rear section. This would be especially tough with the 335 that has the least room back there.

But a 3" plug and play option exists, we have the adapter flanges done and will be test fitting in the next week or two.

Otherwise our brutal PA winter is pretty much over, we put the 80mm pulley back on the nose, and the 255/35/18 RE71Rs are on the car. Before that I test drove with my newest tech in the car, we left about a 1/8 mile skid mark trying to kill the snow tires in 3rd gear. They just won't die.

In addition to the coils/tires we threw on @Raceseng camber plates up front, SPC rear arms. This allowed us to bring the front camber to a nice 2.8, rear to 1.9. I'd go less in the rear but we're rubbing the rear fenders pretty good as it is. 1.9 is still way better than 2.6 without the SPC arms. Forgive the FB link but this is how it sits:



Impressions with the new rubber and coils? Axle fund is started...this thing gets up and goes in 3rd gear. In 2nd gear it will catch traction only with our custom traction control. But it is absolutely brutal. We're tire limited though. A widebody would be necessary to get this thing to hook up in 2nd gear. But honestly at that point I'm fairly certain we'd just be eventually spitting teeth off the splines given the torque. Hopefully we'll have it 100% up and running for the open house. In between the festivities we'll do some ridealongs for those willing to sign the whiplash waiver....

[sam69]

I am aware that the inlet manifold into the SC might/would be to small but I'm prepared to mod that to suit the bigger TB .

Mike would the 75mm TB you have in mind be suitable for a rebore to a bigger size maybe 78 or 80mm ?

[AJPG]

Originally Posted by moto-mike

There will be a limit to how big you can go with the rear elbow that comes from sprintex. So 3" is doable, beyond 75mm I think it will be tough to adapt it without making a custom rear section. This would be especially tough with the 335 that has the least room back there.

But a 3" plug and play option exists, we have the adapter flanges done and will be test fitting in the next week or two.

Otherwise our brutal PA winter is pretty much over, we put the 80mm pulley back on the nose, and the 255/35/18 RE71Rs are on the car. Before that I test drove with my newest tech in the car, we left about a 1/8 mile skid mark trying to kill the snow tires in 3rd gear. They just won't die.

In addition to the coils/tires we threw on @Raceseng camber plates up front, SPC rear arms. This allowed us to bring the front camber to a nice 2.8, rear to 1.9. I'd go less in the rear but we're rubbing the rear fenders pretty good as it is. 1.9 is still way better than 2.6 without the SPC arms. Forgive the FB link but this is how it sits:



Impressions with the new rubber and coils? Axle fund is started...this thing gets up and goes in 3rd gear. In 2nd gear it will catch traction only with our custom traction control. But it is absolutely brutal. We're tire limited though. A widebody would be necessary to get this thing to hook up in 2nd gear. But honestly at that point I'm fairly certain we'd just be eventually spitting teeth off the splines given the torque. Hopefully we'll have it 100% up and running for the open house. In between the festivities we'll do some ridealongs for those willing to sign the whiplash waiver....

Any chance to see the beast in action?

[sam69]

Originally Posted by Chad86

I am looking at exhaust options for the 335. Should I be running a 3" exhaust setup like one would for a turbo setup for better performance?

Any progress with getting the 335 fitted Chad or you still waiting for parts.

[blown]

Originally Posted by sam69

Any progress with getting the 335 fitted Chad or you still waiting for parts.

I have a full 3inch exhaust.. the JDL pipe came in today finally, now for the tune..

will have results soon on built motor and 335

[Chad86]

Originally Posted by sam69

Any progress with getting the 335 fitted Chad or you still waiting for parts.

Unfortunately the shipping company damaged the 335 kit and and I am waiting to hear back from Moto-East for replacement. In the meantime I am still waiting on a few more parts.

[Dream20b]

Originally Posted by Chad86

Unfortunately the shipping company damaged the 335 kit and and I am waiting to hear back from Moto-East for replacement. In the meantime I am still waiting on a few more parts.

Dislike.

[sam69]

Originally Posted by blown

I have a full 3inch exhaust.. the JDL pipe came in today finally, now for the tune..

will have results soon on built motor and 335

Any updates yet blown and what pistons,rods etc did you build your motor with ?

[sam69]

Mike how many miles have you clocked up on the 335 now and how is everything going

Any issues at all or all Ok ?

[FA5teryo]

Hey guys just joined, over from the 8th gen Civic forums and I've got a good buddy who is pioneering the big s/c game with a 2.3l whipple + built k20.. up from a 1.6l whipple that blew up his stock motor

From what he's learned so far, the TB is a very restrictive part of the equation -- one guy just got a Tundra 90mm tb to work on his mp62 setup and it gained +2psi over a 72mm tb..

I'd assume its the same thing on the FRS/BRZ -- not sure what size tb you all are running on the 335 now, but I'd recommend the biggest one you can get! And keep the intake as large as possible to feed that tb, seems to have really helped on my buddy's whipple setup.

His header also picked up large gains over a previous design -- not sure how different the header designs are on the FRS/BRZ, but its something worth noting. 3" exhaust as well

http://www.8thcivic.com/forums/car-b...-than-k20.html


I'd love to see a really well setup roots style blower for these cars, I think it'd be a nice alternative to a turbo kit for those wanting to auto-x, as long as the aftercooler core is efficient enough to keep temps reasonable