So I finally got my car brought down to me and was out driving around getting readjusted to the car because I haven't driven it in a while. After about 2 hours I decide to fill up and pull into a BP and their happens to be a primered, body kitted, winged, rimmed and every other ed I can think of basically a perfect rice burner. He comes over to me and leans on the fender of my car and informs me that if I shouldn't drive such a piece of junk on his streets. Granted my car ain't perfect but it still looks alot better than what he was driving. So I told him to get off my car and go away he got upset and left. Later when I was driving around he flies by me on the highway in traffic and flips me off. I ignored it and kept driving it was about midnight when I got to a long flat stretch of highway 3 lanes in either direction. That same car comes up behind me again and starts flashing his lights and weaving and what not trying to put on a show. At this point I was really tired of this guy so when he passed me I went for it. I was in 5th gear which is a .87 overdrive and I caught him easily and I asumme he stomped on it because he lurched ahead about a half a car length, I give it a little more get even with him wave "bye-bye" and put it to the floor I was 4 lengths ahead of him in a about 3 seconds and I rolled off, the speedometer in my car only goes to 80 and I don't know how fast I was going I just know it took a long time to get back to 80. Moral of the story don't screw with the ugly blue Datsun from 1980. I guess he didn't realize that under the Perrywinkle exterior beat the heart of a 450-horse monster that will turn an 11.7 on slicks. If you are wondering my car has a stroked 2.8 inline six, T3/T4 turbo, intercooler off an Isuzu NQR truck, 11 to one compression, close ratio five speed, LSD R200. It only spools 5psi but with 11 to 1 I don't think it will take kindly to anymore boost.

What crank do you have in it to stroke it? L28-D crank? Is it a 3.1?

What sort of tuning are you running to make sure 11:1 comp. isn't going to grenade under the stress of a turbo? Normally, guys who make that sort of power don't go over 9:1 comp., infact how did you get the compression that high to begin with?

What spec T3/T4? There's about a million variations.

What cam are you running in your L28?

What head are you running?

Which Close ratio 5-speed are you running? Datsuns only had an option of .864 5th gear ratio in both the Factory competition transmissions both wide and close ratio versions, only difference was the 1st-4th gear ratios. Unless you we're talking about the competition only tranmissions, there's three different versions but they all have a 1:1 ratio for 5th gear.

What R200 are you running? 3.54? 3.7? 3.9? 4.1? And which LSD unit are you using? NISMO 2-way? or a Viscious unit out of a Z31 R200? If you're using the '81-83 280zx Turbo LSD it'd be a 3.54 R200.


And after you answer ALL that... what kind of 'rice burner' was it? What kind of car was it?

1. Yes, it is an LD28 crank and is a 3.1
2. Only tuning done is a adjustable fuel injection box from Jet and MSD Digital 6 box, slight domes make 11.0 to 1 on a whistle.
3. Far as I know it is a .57 trim turbo it was on the car when I bought it.
4. Isky grind .595 lift 306 adv. duration grind no. Z-273.
5. Head is the P90 it came with ported and stainless valves.
6. 5-speed is an unconfirmed factory close ratio I've never had it apart or had it looked at again it came with the car.
7. R200 is a VLSD out of a Z31 I wish I could afford a NISMO 2-way.
8. 1g GSX Eclipse not modded as near as I could tell except for a fat exhaust and BOV.

How do you know it's making that much power? a Turbo L-series is about at it's limit near the 450hp range. And it takes a huge turbo to do it.

The design of the motor has it's limits, it just can't flow enough air.

Have you dyno'd it? Also, what size injectors are you running on that thing?

another Z?

WHOA!
http://blogs.usatoday.com/photos/uncategorized/speedracer.jpg

Man, The Stig is laying it down......

After you answer the rest of The Stig's questions I will need you to explain to me why you would let someone lean on your ride and disrespect you without giving him a pimp slap? :twak:

Man, The Stig is laying it down......

After you answer the rest of The Stig's questions I will need you to explain to me why you would let someone lean on your ride and disrespect you without giving him a pimp slap? :twak:

Well, I'm a Datsun guy, and 450+hp L-series motors pretty rare. And usually cost a shit ton to build. Infact, most Z guys don't get past 350whp on a L-series.

Oh, what size throttle body are you running on that? Stock L28-E intake manifold? Are you still running the stock Exhaust/turbo manifold? What size exhaust are you running?


I'll give my final synopsis after I've got all my clues.

Lol you burned his ass. What was he talking about "his" streets. Very easy but very nice kill.

Holy shit Stig, the guy probably ran out of breath and passed out trying to read all your questions... :grinno:

To the O.P:
Nice race.

Stig isnt gonna let off till you show him a video of your track times, a dyno sheet, a complete mod list with reciept of purchase and a letter of recomendation from the National 11 second Datsun Owner's club.

Man, I don't blame him... I mean, I myself love the old Z's for what they are.
If I had the money and time to get one of the older ones, and restore it, I would without a doubt.

To Stig:
Dude, you still have the Z? Because I don't think I ever had a chance to see it, or I just don't remember.
If you get a chance, can you post up some pictures of the car so I can take a look?

I ask all the questions, because I like to have all my facts straight before I throw up a BS flag.

11:1 compression with stroker, big cam, the good head with a header and exhuast is good for maybe 225hp-250hp at most. N/A Datsuns on pump gas rarely see 300hp, I mean you've got to pull every oldschool hotrod trick out of the book to do it.

This guy is claiming 11:1 compression with 5psi of boost. Which, is almost unheard of save for say a LS6 with a Vortech Supercharger and the max psi you can run is 6psi. He's claiming 450+hp... with just a turbo slapped onto a motor that's got to be only pushing 250hp at most? 200+hp from just 5psi of boost?

I mean... seriously now.

Ok, lets forget all that and lets just focus on the one thing that triggered my alarms. 11:1 c/r with boost. Who does that? Only reason you can get away with it on such motors as the LS6 is that you can fine tune the ECU to pull timing and increase fuel pressure. The L28E's ECU is soooo primitive, you'd have to run a stand-alone to set it up correctly. And I don't see that as a listed mod.

This whole story has red flags to me.

I'm not officially calling him out, I just want some explinations in some manner of detail seeing as the original post was rather lacking.

Dude, Stiggie, Im not a Datsun genious like yourself and even i saw the red flags!

still who knows.

hmm yeah the 11:1 compression ratio with boost really threw me. I dont much anything about the cars platform or engine. But i know if your gonna build an engine and boost, you dont waste money and an engine on 11:1 compression ratio. Idealy for boost you want to be somewhere between 9-10:1 CR.

Lets see some pics or a dyno sheet.

The serious boost engines, run 8:1 or 8.5:1, which is practically stock C/R. It's safe, and you can run 20+psi on it like some guys do with monster turbo builds.

It takes at a minimum of 15psi on a decent L28 build to make 300whp.



EDIT: I built a version of his motor on Desktop dyno, and it made 342hp @ 7500rpm, 259ft-lbs of torque @ 6000rpm with 6psi off a Garrett T04B turbo with 5* advanced timing.

With a proper stage II turbo camshaft, .460 lift 270/260 duration, 8.5:1 C/R and 23psi of boost I got 449hp @ 7000rpm, 345ft-lbs of torque @ 6000rpm with 8* advanced timing.

Remember these numbers are crankshaft, not wheel horsepower.

I dont know nothing bout no compression ratios cause my LS2 can take 6psi with 11.1 cr and no problems but I figured he has an engine similar in size and displacement to that of my old starion. Now my starion had 8.5:1 cr and boosted 9psi stock. fully built with 21 psi , bored, ported head and turbo, race cam, 9.1:1 cr and every single old school hot rodder trick the most it would put down was 325 whp. Simply put, the engines of that era where very limited.

I know they lower the compression ratio on the E36 M3s when they boost them,but I've never seen it referenced on the E46 M3s. Of course, the Horsepower Freaks turbo kit makes like...500-600 horsepower on fairly low boost levels, so they may not lower the compression on them.

I don't understand why 400hp-450hp is so unrealistic in my L series, It is a stroker, bigger turbo, ported head, hogged out intake and exhaust, big throttle body (80mm), 4.5" exhaust, big intercooler, MSD ignition, big cam, 11 to 1 compression, and 60 lb/hr injectors. I have had it dynoed it made 447HP@6700 but only 379ft/lbs@5200 granted that was on 105 octane but otherwise it is the same car that is sitting in the parking lot. But I won't try to convince you I realize you know quite a bit about L series engines and even I was sceptical about this motor until the first time I ran it. Maybe the dyno was a fluke but this car runs like a scalded dog.

Unless you run 105octane all the time...I doub't you'd be at 400+all the time. Hell, the difference between the 91 and 93 on many cars is noticable.

I wish I could afford to drive it on 105 but that is only on race days I regularly put 95 in it and I'd like to run av through it once or twice a month but I can't buy any right now , the airstrip won't sell it to me unless I'm fueling a plane.

I'd love to see some video of it on the dyno... I just find it hard to believe you're makign 400+whp on that motor. Even if it's a large turbo, 6psi is just insanely low... and ontop of 11:1.

Take this guy for instance:
http://forums.hybridz.org/showthread.php?t=105832

He's making 500whp on a L28E-T stroker, sure he's making more power but he's got a laundry list of parts and pictures to back it up... and it's on 94 octane to boot!

And this guy:
http://forums.hybridz.org/showthread.php?t=114203&highlight=450whp+L28
Making 460whp on a stroker motor. Stock head and cam, a big turbo but with 23+psi. On 93 octane.

Stig, I still havn't seen ur Z... Got any pictures you'd be able to even PM me?
I'm dying to see your car...

AF is having issues, it's not letting me upload images at the moment. But, even still my Z is nothing to look at. It's a dung heep.

AF is having issues, it's not letting me upload images at the moment. But, even still my Z is nothing to look at. It's a dung heep.

Either way, I want to see because I know it has limitless potential...
:grinyes:

What about the pic of your old Z against the backdrop of the industrial plant at night. I used to have that as my background.

I loled a little at Cass' post. Why?
:dunno:

Stig are you a member at hybridZ? I don't post much there but I try to read the new posts every day. I do agree that the boost on my motor is extremely low but that is reading the boost on a mechanical AutoMeter boost gauge, so it may actually spool more than 5psi. The intake is an L28E manifold that has been extrude honed as has the exhaust. The valves are also a hair oversize to help it breathe. I am also having the car dynoed again in early August when I go home and would be happy to post a video of it.

Video would do.
Make sure to get one posted.

Factory Freak engine?? Possibly...Yes? No?

Alright...I'll shut up and pretend to know what I'm talking about here. Carry on...

lets see the dung heep...

By dung heap do you mean my car? If you do then heres a picture, if you don't then I'm lost.

http://i19.photobucket.com/albums/b183/SilentNight1647/280ZXFront.jpg

Sweet Z!

How about a picture of the motor?

Damn thats clean!

I believe 209 was referring to Matty's Dung heap. On the flip side, you have a very nice looking Z SilentNight!!

I'm agreement with jeep there. It would be nice to see pictures of your engine bay. And again, very nice Z.

Sweet looking Z bro.
Love it.

Here are some engine pics not nearly as impressive as the exterior but you know what they say it's not how it looks i how it runs. Sorry about them being kind of blurry I took them when I fist got my camera and hadn't figured out the damn thing yet. And thank you for the compliments on my car it is really nice to know not everyone thinks of it as just an old, ugly hatchback.

http://i19.photobucket.com/albums/b183/SilentNight1647/PICT0023.jpg

http://i19.photobucket.com/albums/b183/SilentNight1647/PICT0019.jpg

http://i19.photobucket.com/albums/b183/SilentNight1647/PICT0025.jpg

If you could get that thing sitting about 1.5 inches lower on those wheels...it would be glorious...

^^^agreed. its very clean as well. i still want one, but its more of a huge restoration process which i dont have the space to have a huge dung heap until its done.

It actually sits about 2 in lower without the spacers in the springs but where I'm at right now I need the extra ride height just to drive it on the street. I will look for a picture of it without the spacers.

^^^agreed. its very clean as well. i still want one, but its more of a huge restoration process which i dont have the space to have a huge dung heap until its done.

I hear you on that man...
I said almost the same exact thing in some other thread, don't remember which one.
I would kill to have a nice looking 240Z, but it would take too much time to restore it, and I don't have a whole lot on my hands.

saw a nice 280zx with the rb26dett engine in it today, very nice looking car