Sprintex 335 Testing & Progress

[sam69]

Watching this with interest to see how a stock motor handles the 335 as everyone including Sprintex say you have to have a built motor for the 335.

What size pulley are you running and how close to the bonnet does it get as I know the 75mm"s tend to rub on the 210 so would be the same wouldn't it.

[harkbrz]

Originally Posted by sam69

Watching this with interest to see how a stock motor handles the 335 as everyone including Sprintex say you have to have a built motor for the 335.

What size pulley are you running and how close to the bonnet does it get as I know the 75mm"s tend to rub on the 210 so would be the same wouldn't it.

75 never rubbed on mine stock hood or seibon.

[Fizz]

I've personally seen 2 cars with 75mm that had pulley contact marks under the hood. Good thing is that the contact point is on the hood frame, and not the outer skin. Since they're aluminum you won't need to worry about rust as well. But it just looks annoying.

[Khorne]

Originally Posted by Fizz

I've personally seen 2 cars with 75mm that had pulley contact marks under the hood. Good thing is that the contact point is on the hood frame, and not the outer skin. Since they're aluminum you won't need to worry about rust as well. But it just looks annoying.

Took about 15,000km on both cars, and Aaron and i are not kind to them
Engine mounts sort that out, got the cusco ones shipped last night for $250AU from Japex.

[brianhj]

Originally Posted by Fizz

I'm liking the sticker on that intake pipe. Does it only come supplied with the 335 kits?

My 210 has it

It's a thin metal plate with adhesive on the back

[jay1989]

Very interested in this, wrapping up my motor build after the first of the year, should have close to 10.5:1 compression maybe 10:1 at the lowest. Forged pistons, rods, upgraded springs, heads port and polished, headers w/o cats, lightweight pulleys. Just trying to source some new cams, maybe a forged crank.

Hoping after boost (really want to go a sc route vs turbo) will be able to get 400 safely, and reliable enough for a DD with about 20 track days per year....

Only shortcoming is I have no good tuner for these cars (generally I tune mopar vehicles). Point me in the right direction of an awesome/reliable tuner, sell me the kit w/o the filter and tube going back to the manifold for the filter and i'll buy one up and test it out

PM me and I will get you my contact info you can call and we can have a chat!

[swift996]

What are the torque claims? Or what do you think you can get out of this thing conservatively with the proper built components?

[s2d4]

Originally Posted by jay1989

PM me and I will get you my contact info you can call and we can have a chat!

Moto-East Tuning & Performance
EcuTek Master Tuner, BRZ/FR-S, NC MX-5, Mazda DISI, Nissan, and Subaru Tuning
FT86 Turbo/SC Kit Packages | EcuTek ProECU kits | Flex Fuel Kits | Facebook | Store
1550 Lehigh Dr, Building 8 | Easton, PA 18042 | 570-503-6686

[Mechazawa]

I would love to see this work with pump gas and a stock block. It would give the room for growth that seems to be the biggest shortcoming with the 210. What about making an "underdrive" smaller crank pully coupled with smaller accessory pulleys, accepting that the ac pulley might be too expensive to do. Then maybe you could get the blower rpm down enough to make it work nicely for 300 ish whp?

[jay1989]

Originally Posted by Mechazawa

I would love to see this work with pump gas and a stock block. It would give the room for growth that seems to be the biggest shortcoming with the 210. What about making an "underdrive" smaller crank pully coupled with smaller accessory pulleys, accepting that the ac pulley might be too expensive to do. Then maybe you could get the blower rpm down enough to make it work nicely for 300 ish whp?

I am going to order one soon when I do my goal will be to make it work with 91 or 93 octane fuel and will be shooting for the 320-340 range safely. This is the goal anyway. Maybe these guys will figure it out first though then I don't have to blow my engine to do so haha if I do I have a back up motor though

[vgi]

Originally Posted by jay1989

... 91 or 93 octane fuel and will be shooting for the 320-340 range safely.

doubt it

[Xero-Limit]

Making some progress today, caught a quick break to get on the dyno. Bear in mind our goal was to see if this could do double duty as a reasonable mid range system with upgrade potential, vs a maxxed out system right out of the box. All testing was done on e70, now that we have a sense of where the ignition timing is falling in, we will put pump gas in and watch the knock counts. For these dyno graphs, we added timing primarily to the e85 side as to make sure on pump we don't run into issues. On with the show....

Strapped down and ready for action:



This is our initial baseline taking the 210 tune, and taking out some timing (a good amount...)



You can see that the power is super smooth and comes on EARLY. This is a torque curve of a strong OEM v8. Did I mention this is on the "low timing" map? Difference is about a couple degrees. Next step is to give it a bit more timing.



Picked up a bunch of mid range with just a small change. This is showing some potential. However, in light of the relatively "low" numbers (I'm brave until about 300 tq on the stock motor) we rolled back some of the cam timing changes so that it can generate close to full boost. This is the result of the subsequent run. Unfortunately the bypass stuck for a second or two, so all the subsequent runs will be best compared at 3500+.



Now we're having some fun. You can see the gobs of torque we picked up, and this was a relatively minor change. We're still not at the cam timings we used on the 210. Speaking of the 210, how does that compare on a dyno that reads about 5% higher than this one?



You can see the 335 absolutely destroys it. The 210 plot is on e85, full bolt ons, 70mm pulley, etc...the 335 run is on an 80mm pulley and a mostly stock car with a stock header and cat back on e70. We did change out the front pipe/overpipe since we had the trans off to get the clutch, but those won't do a damn thing with a stock header and cat back. So there is still a whole lot left on the table. Our experience is that the 70mm pulley should generate about 15% more HP for a given boost level, and the stock header and cat back are surely a major restriction here. But since our goal was to see if a mostly stock car can handle it, this is exactly why we put it back to stock and wanted to test this way.

Now a few more comparisons. This is a 335 vs a turbo kit. Goes to show you that not all HP is created equal, and here particularly despite the equal HP, only one smokes the tires a gear early



And of course, for those NA, this should really make you want to upgrade!



We'll get some video up, but once this tank runs out we'll be going to pump gas. I'm very confident we'll be just fine on pump gas. Our method of "blowing off" extra boost is working just fine, and 280 torque on e70 will be an easy 250 torque on pump gas. So I can entirely see this system working for folks who run that exclusively. Then if you ever build the motor or get e85/race gas, you'll have an extra 50-100 hp at your disposal depending on pulley size, or with a built motor. The standard Raceseng 70/72.5 pulleys will fit this application just fine, and we will probably head that route in 2015 once we get a few other projects here cleared out so we can build the motor.

[yomny]

In for pump results.

[vgi]

Originally Posted by moto-mike

Making some progress today, caught a quick break to get on the dyno...
We'll get some video up...

with Mike's permission, some videos from a crappy winphone:
https://drive.google.com/folderview?...EU&usp=sharing