Was the SR20DET ever available in North America?

[Matt93SE]

So they made a pretty huge rule change for my class, and basically it disallows "JDM" engines.

The rule spec requires the engines be "available in North America". i.e. it could be Nissan or Infiniti, but it has to be in a production car in north america.
Reference: http://www.youtube.com/watch?v=6ddaq...1&feature=fvwp
Page 6, item G.1.

So am I now screwed in my plans to go with an SR20DET, or did it come in a different nissan/infiniti vehicle in Canada?

(another option is to use the SR20DE or SR20VE, but I can get more torque out of a KA or an SR20DET if I can find a way to make it work.)

[hai1206vn]

No SR20DET was ever available in NA. And all SR20DE here are FWD and won't just drop in.

Can you add turbo to any Nissan engine? Then turbo the KA.

If you have big budget and time to work on it, the VQ35DE is a good candidate. It weighs 50lb less than the KA, and starts at 230-250whp, N/A-upgradable to 300whp.

[Def]

His chassis weight is dictated by displacement though.

That's a tough one, as I can't think of any Nissan engined available in north America that have good displacement to power potential.

[WorkInProgressK]

is there something wrong with your reference? or my iphone likes ninja bears,...

Yes matt your reference is ****ed.

[Matt93SE]

haha doh!

http://www.scca.com/documents/Fastrack/10/10-fastrack-aug-club.pdf

For some reason Ctrl+C doesn't work to copy when you have a .pdf open on my computer. I hate Adobe... That was the previous link I had ont he clipboard.

As Def said, my class rules dictate that I run something under 3.0L, and my min weights are based on engine displacement.
IF I use a turbo engine, it must be the OEM turbo, and must be installed OEM. i.e. I can't turbo a KA, but I could use a VG30DETT at a HUGE weight penalty.

I could also use an SR20DE since it was available in the SE-R. I would have to use a FWD block, but I could use an RWD intake manifold with it if that works. My min weight would be considerably loser- like 2200lb, but I don't think I can get the car that light w. me in it (at 250lb w/suit)

[WorkInProgressK]

Supercharged cars
may be approved on a case-by-case basis. Contact the Club Racing Technical Office for details.

On a serious note, get some serious cams and timing+ thinner head gasket.

Or get a RHD conversion. just saying.

[hai1206vn]

I was gonna suggest a VQ30 block but with their min weight requirement you're still better off squeezing it out of a KA. 2.0L is too weak to haul a 240.

[Def]

haha doh!

http://www.scca.com/documents/Fastrack/10/10-fastrack-aug-club.pdf

For some reason Ctrl+C doesn't work to copy when you have a .pdf open on my computer. I hate Adobe... That was the previous link I had ont he clipboard.

As Def said, my class rules dictate that I run something under 3.0L, and my min weights are based on engine displacement.
IF I use a turbo engine, it must be the OEM turbo, and must be installed OEM. i.e. I can't turbo a KA, but I could use a VG30DETT at a HUGE weight penalty.

I could also use an SR20DE since it was available in the SE-R. I would have to use a FWD block, but I could use an RWD intake manifold with it if that works. My min weight would be considerably loser- like 2200lb, but I don't think I can get the car that light w. me in it (at 250lb w/suit)

That sucks - I think a lightly worked KA24DE is the best course of action then. An SR20DE can probably make "about" the same peak power and way less in the midrange(i.e. it'd be slower overall), but like you said, there's no way with a cage you're getting the car down to ~2000 lbs without driver. I could see if it was like 2300 lbs without driver, but that's just below the weight for a KA car under those rules.

At least with the KA you could ballast the rear/rear seat area to get a better weight dist.


Unless Mexico ever had an SR20DET sold new(highly doubt it, they still get B13s sold new down there I think with GA18s I think!), you're kind of stuck.


Do you think a ~180 rwhp KA would be uncompetitive at the min weight with the engine? It sounds like you could do it the way the rules are written without much cost since a stock ECU would easily be used for that.

[jmauld]

What kind of power can you get from a QR25?

[Matt93SE]

Supercharged cars
may be approved on a case-by-case basis. Contact the Club Racing Technical Office for details.

On a serious note, get some serious cams and timing+ thinner head gasket.

Or get a RHD conversion. just saying.

You're not allowed to add aftermarket supercharger. They're referring to stuff like the Mini Cooper S.

the initial plan was to build a mild KA. I have to keep stock intake manifold, but otherwise it would be similar to what 240sxTTC is doing in this thread: http://nissanroadracing.com/showthread.php?t=1958

The second plan (which I have just now been disallowed to do) was to run a stockish SR20DET.. bigger injectors and MAF, play with the ECU, and drive happy for years.

since no SR20DET, I'm back to building a KA...

The other issue is that I want to be able to run HPDEs and Enduros in it, which means it'll cost a fortune at $9/gal if I go high enough in compression to need race gas.
My thought is to build it as big as I can and still run 93 octane. 11.5 or 12:1 compression and the biggest cams that will work.. I already have a hotshot header and intake, so the next step is a badass dogring tranny with an uber-light flywheel and I'm about to the limits.

I figure I can do all of the above for about $8000 over a 1-2 yr period.. build the KA and get an ECU for it for $5k ish over the winter, then next year go to a dog box (if I'm lucky find a used sequential!!!). voila.

[hai1206vn]

I'd say leave the dogbox out. Stock tranny is abundant; you can even swap tranny covers with a bunch of other Nissans if needed.

[Equinox]

Was the SR16VE ever released in the States?

[Def]

Was the SR16VE ever released in the States?

We never got any VE variant of the SR here.

[Def]

You're not allowed to add aftermarket supercharger. They're referring to stuff like the Mini Cooper S.

the initial plan was to build a mild KA. I have to keep stock intake manifold, but otherwise it would be similar to what 240sxTTC is doing in this thread: http://nissanroadracing.com/showthread.php?t=1958

The second plan (which I have just now been disallowed to do) was to run a stockish SR20DET.. bigger injectors and MAF, play with the ECU, and drive happy for years.

since no SR20DET, I'm back to building a KA...

The other issue is that I want to be able to run HPDEs and Enduros in it, which means it'll cost a fortune at $9/gal if I go high enough in compression to need race gas.
My thought is to build it as big as I can and still run 93 octane. 11.5 or 12:1 compression and the biggest cams that will work.. I already have a hotshot header and intake, so the next step is a badass dogring tranny with an uber-light flywheel and I'm about to the limits.

I figure I can do all of the above for about $8000 over a 1-2 yr period.. build the KA and get an ECU for it for $5k ish over the winter, then next year go to a dog box (if I'm lucky find a used sequential!!!). voila.

I don't think it'd cost anywhere near $5k to build a mild KA. I can help you with the tuning, so that should only cost $200ish max(and you can dyno tune it).

Once you go over 10:1 CR the power gains from upping the CR are really pretty minor. Something like 11.0-11.5:1 would be fine for 93. At that level you could probably dump in a gallon or two of 110 leaded or something like that and tweak the timing up for a few extra HP during a race(an extra $6-7 for an extra few HP during a race? sounds worth it to me). It'd be as simple as flipping a switch in the car to change maps.

A KA is honestly not going to rev past 7k RPM and live long, and probably won't make much power up there even with big cams given the stock IM, so might as well keep stock rods. I'd probably go with forged pistons as I feel that's one of the bigger benefits to "building" an engine, and I don't know if stock has an 0.040" overbore available. Otherwise it's SOHC pistons and whatever that gives you.

The N60 MAF and SR injectors that would go well with a build like that are dirt cheap, less than $100-120 for both. Machine time shouldn't be that much, a couple hundred bucks.

I really think besides the cost of the bolt-ons and cams you go with, you could do the engine for anywhere from $800-1500. I figure the bolt-on mods wouldn't cost more than $500-1k to get a KA around that power level depending on how fancy you got?

I doubt it'll make 200 rwhp with the stock IM, but I would think 180 rwhp would be pretty doable. A restricted S14 SR would still own it, but I think it'd get around just fine. It'd be way faster than a Spec Miata for sure.

[turtl631]

Yes, there are no RWD SRs here, no VE SRs...just FWD SR20DEs, which don't get too far beyond KA power levels with similar mods.

With the dogbox he could at least get some better gearing...no need for such a short 1st gear on a pure track car. The 1-2 shift has a huge RPM drop, and you never go back to it after you're moving on the track.