WAGON JON Posted August 22, 2011 Report Share Posted August 22, 2011 After about 13 years of driving my L-2.3 motor the comp is at... #1: 230 #2: 220 #3: 225 #4: 220 So, guess what's the HP and TQ?... Quote Link to comment
Sealik Posted August 22, 2011 Report Share Posted August 22, 2011 LZ23? 13 years? What's the compression ratio? Quote Link to comment
ggzilla Posted August 22, 2011 Report Share Posted August 22, 2011 The numbers don't mean much, except relative to each other. There is only 10 psi difference, or less than 10% variance. That is excellent. L-23 is a stroker motor. Probably an L20B with larger pistons and crankshaft from an Z-series motor. LZ is a Nissan works race motor: Quote Link to comment
Sealik Posted August 22, 2011 Report Share Posted August 22, 2011 The numbers don't mean much, except relative to each other. There is only 10 psi difference, or less than 10% variance. That is excellent. L-23 is a stroker motor. Probably an L20B with larger pistons and crankshaft from an Z-series motor. LZ is a Nissan works race motor: Ya...I think you're right, bored L20B. Thought it was a typo error.....L(Z)23...as in Z block/L head Quote Link to comment
datzenmike Posted August 22, 2011 Report Share Posted August 22, 2011 After about 13 years of driving my L-23 motor the comp is at... #1: 230 #2: 220 #3: 225 #4: 220 So, guess what's the HP and TQ?... HP: 120-125 at the crank, just over 100 at the rear wheels. Assuming a stock L cam and head. Quote Link to comment
ggzilla Posted August 22, 2011 Report Share Posted August 22, 2011 2.3 liter ... 8.5:1 or 10:1 HP would only be 5 hp different. Except if you have high compression (implied by the compression readings, but not guaranteed) you probably have fitted a custom camshaft and that would make a larger difference... except that in 13 years of driving the compression is still good, which means you haven't been constantly revving it up. So probably makes peak HP at less than the stocker 6000 RPM. But most stroker motors are built up with hi-lift cam, good carburetion etc. My guess: 140 HP and 160 ft. lb. torque at the rear wheels. Quote Link to comment
WAGON JON Posted August 22, 2011 Author Report Share Posted August 22, 2011 The head is the infamous U67 with Z valves and port matched intake. Erson cam. The block is the O6W Napz 2.2 with the Napz 2.0 6 inch rods with forged pistons, o-ringed, stock balanced 2.2 crank, stock lightened 15 pound 6 bolt 200mm flywheel with the early L-16 header, and 2 1/4 exhaust with 2 1/2 Summit turbo muffler. ggzilla is getting close. Quote Link to comment
ggzilla Posted August 22, 2011 Report Share Posted August 22, 2011 U67 is a square port exhaust head, as used on 1977 Canadian 200SX. The stock Nissan L23 made 123HP in 1968. A modded L20B can beat that. The stock KA24E (3-valve head) makes 142HP without any mods ... a worked L-head can match that but I'd think you'd have to rev it up to 7k to make more power??? Quote Link to comment
69FJWagon Posted August 23, 2011 Report Share Posted August 23, 2011 I can cheat ive seen this on the dyno.... and it is more than impressive on the torque side.... :cool: Quote Link to comment
Sealik Posted August 23, 2011 Report Share Posted August 23, 2011 Specs on the cam? Quote Link to comment
WAGON JON Posted August 23, 2011 Author Report Share Posted August 23, 2011 Something advertised to 483/296... not sure though. Quote Link to comment
yello620 Posted August 23, 2011 Report Share Posted August 23, 2011 At the wheels 165hp, 190tq. Just my guess. Quote Link to comment
ggzilla Posted August 23, 2011 Report Share Posted August 23, 2011 483/296 cam. Seems similar to Nismo part Number 99996-D1022 SLALOM CAMSHAFT (.490/290°). The SSS/L20B cam is .413"/248°. Quote Link to comment
datzenmike Posted August 23, 2011 Report Share Posted August 23, 2011 This is Byrons LZ 2.2 with unknown 'hot' cam and twin sidedrafts... or maybe his later EFI (they were only a few HP different. He says he isn't comfortable taking it above 6,500 with this cam. So this what a 2,2 with good carbs and some cam can do. Quote Link to comment
69FJWagon Posted August 23, 2011 Report Share Posted August 23, 2011 well if my memeory serves me right with 40mm webers... 147whp and 175 wtq or something close to that ;) Quote Link to comment
WAGON JON Posted August 23, 2011 Author Report Share Posted August 23, 2011 Yep! Something like this.... Quote Link to comment
budsaipan Posted August 23, 2011 Report Share Posted August 23, 2011 Whats your compression ratio? Is that on race fuel? Anyway nice! Do you think you can get more out of it with 44? Quote Link to comment
motavated Posted August 23, 2011 Report Share Posted August 23, 2011 Holly shit. WOW! NICE! KA SWAP? NAHHHHhhhh... Quote Link to comment
ggzilla Posted August 23, 2011 Report Share Posted August 23, 2011 wow that's better than a KA24E, or even a KA24DE on the torque side. Good work. And looks like an L too. Got any pics? Quote Link to comment
WAGON JON Posted August 23, 2011 Author Report Share Posted August 23, 2011 Whats your compression ratio? Is that on race fuel? Anyway nice! Do you think you can get more out of it with 44? The comp ratio is 10:1 or 10.5:1 or so. Can't remember exactly. This is on California's 91 octane...if it were 93 like in Ohio it would be a lot less prone to ditinate...ping! With 44's I got one more HP and 27 less foot pounds of torque! The 40's I was running were modified just as everything else I run. Bigger isn't always better. Quote Link to comment
WAGON JON Posted August 23, 2011 Author Report Share Posted August 23, 2011 wow that's better than a KA24E, or even a KA24DE on the torque side. Good work. And looks like an L too. Got any pics? One of the other guys dynoing their car had a built KA24DE with cams and his HP and TQ was 165/165. So a good L-series is nothing frown upon because it is 60's technology. Quote Link to comment
WAGON JON Posted August 23, 2011 Author Report Share Posted August 23, 2011 wow that's better than a KA24E, or even a KA24DE on the torque side. Good work. And looks like an L too. Got any pics? I'll see If I can dig up some pics... Here is a link to the dyno day...under the picture are other ones of the car on the roller. Troy was doing the dynoing... http://www.510garage.com/photos/displayimage.php?album=286&pos=229 Here is a pic of my engine at the time, nothing special and very unassuming. http://www.510garage.com/photos/displayimage.php?album=286&pos=47 Quote Link to comment
rusty12ver Posted August 23, 2011 Report Share Posted August 23, 2011 Didnt the wagon dyne at around 160-170ish for torque and then after a jet change the higher #'s that day? Quote Link to comment
69FJWagon Posted August 23, 2011 Report Share Posted August 23, 2011 Lisas 2.2 made 155whp and 151 wtq... wondering if I went down to 34mm chokes in the 44mm Mikunis if I would gain more torque? Quote Link to comment
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