Project Slicktop

[Z-owned]

I can't wait to get a chance to get my jwt flywheel on it's going to be a little while though. Looking forward to the dyno results though to see exactly how much is freed up.

[franklin93zx]

the never ending build thread man i love this thread. cant wait for dyno results

[Honad]

The butt dyno results are in.

After all the snow melted yesterday, I finally got out and took the old girl for a spin.

First of all, I'm going to have to adjust the way I drive. Basically, the revs drop fast enough that if I'm not a little faster on the draw the revs actually come in under the next higher gear on the upshift. On heel toe downshifting, a lot less throttle blip is required than before. The simple summary is, the car revs a lot quicker. The butt dyno says I picked up a lot of throttle response and a little bit of power, but since I didn't do any clutch dumping launches or full out acceleration as I'm trying to get at least a few hundred miles of smooth, break-in driving before I do any of that, it's hard to tell exactly how much at this time. It's probably going to have to wait for the dyno.

[evan_aggie]

How about the weight difference? I'm curious what total OEM parts were versus JWT.

Do you have a 36" socket extension for dropping the transmission?

[Honad]

I have not yet weighed the stock parts, but it's on the list of things to do.

Used a 24", 12" and elbow in various combinations to get all the bell housing bolts off.

[evan_aggie]

By the way, if you don't mind me asking, how much did you pay for your 94 TT?

There is one I might be able to get, but all the moldings need to be replaced and it is probably going to need paint all around. Aside from that, an injector is faulty and it will need the 120K service. I'm trying to decide if I want to take a big risk and pursue this or not.

[tg]

*waits for rev vids + weight differences*

[240six]

With this lighweight setup, at first, you will experience some clutch chatter when engaging from a stop. In time you will learn how to engage smoothly. Those of you considering this mod that live on hilly terrain may have a harder time enjoying the benies...

[JDMZ32]

as always, awesome update . whenever the next time i need a new clutch/flywheel, i might refer back to this thread!

[Honad]

With this lighweight setup, at first, you will experience some clutch chatter when engaging from a stop. In time you will learn how to engage smoothly. Those of you considering this mod that live on hilly terrain may have a harder time enjoying the benies...

I noticed a huge difference in the way I had to drive my car when I put my last clutch/flywheel in the TT, then again, I did go with a 6-puck, segmented flywheel and a crazy pressure plate.

The chatter is minimal. I mean, it's present as it is with any aluminum flywheel, but it's with the exception of adjusting my timing on rev matching and gear shifts so that I'm not over/under rev for them, the car is actually much easier to drive. Clutch engagement is like if not better than factory.

[Honad]

I did a quick little comparison video pre and post flywheel install and thought I would share. As it says on the youtube page, please excuse the audio on the video, the microphone on the camera is super sensitive to any noise over a whisper. It's very easy to overpower it and make everything sound all weird.

Pre-Flywheel Install by itself in case you missed that.

Post-Flywheel Install by itself.

The comparison video

[Z-owned]

Definetly a noticible difference in rise and drop.

[300freekzx]

Idle Adj. in order now

[JDMZ32]

neat videos. didn't notice the difference til i watched the comparison. i just installed my AMS pulley .

[franklin93zx]

Hey Honad the question has been brewing in my head... what are you running suspension wise i didn't read anything about that in the thread and i know how you track your slicktop so are they adjustable shocks or something else?

[franklin93zx]

Hey Honad the question has been brewing in my head... what are you running suspension wise i didn't read anything about that in the thread and i know how you track your slicktop so are they adjustable shocks or something else?

Scratch that missed page 4 didnt see the sweet coilovers

[Honad]

Hey Honad the question has been brewing in my head... what are you running suspension wise i didn't read anything about that in the thread and i know how you track your slicktop so are they adjustable shocks or something else?

It is in the thread, a few pages back.

SPL 15-Way Adjustable CoiloversPowertrix Front Adjustable Upper control armsNismo Tension RodsStillen Adjustable Sway BarsCZP Front and Rear adjustable swaybar endlinks.

Running 1" of preload on the springs.Lowered 1.2"2.0 degrees negative camber front1.6 degrees negative camber rear

[Honad]

Welp, finally got the stock stuff weighed. Thanks to my wonderful wife for being the hand model for these shots.

Stock Flywheel was 19 lbs 6 oz, JWT is 11 lbs 5 oz (-8 lbs 1 oz)

Stock Clutch Disk 3 lbs 1 oz, JWT is 3 lbs 9 oz (+8 oz)

Stock Pressure Plate 13 lbs 10 oz, JWT is 13 lbs 6 oz (-4 oz)

Not a ton of weight loss by any means, just 7 lbs 13 oz, but it's where it friggen matters most!

Picture of the dog trying to help as always.

[JDMZ32]

stock flywheel FTL! i changed out my crank pulley yesterday. the stock one is ridiculously heavy. AMS is so much better...

[labcoatmonkey]

Hey Im a new user but ive followed this topic for a hwile. Thats sum sick stuff youre doing to the slicktop... no silly bodykits either, just the sexy original babe . Btw I like that picture of the vg u took so I made ya sumthin =P



i know its not much but enjoy!
Modified by labcoatmonkey at 12:52 PM 4/17/2009

[franklin93zx]

I'd like to start by thanking my wonderful hand model and amazing girlfriend, Megan...

Welp, finally got the stock stuff weighed. Thanks to my wonderful wife.....

Made a Honest women out of her Honad?? Congrats

[dozug]

hello honad, nice project. hm, i dont see you changed into one-piece driveshaft. its gonna give you 15~17lb of weight loss and better on vibration issue. you should try them. I dont have them, but they are on my list. everyone says they are good.

[labcoatmonkey]

I forgot to ask this before but will there be a chipping of the ecu?

[Z-owned]

I forgot to ask this before but will there be a chipping of the ecu?

If you would have looked through the pages you would have seen he got a jwt programmed ecu.

[tg]

[JDMZ32]

hahahaha^

[Honad]

Friggen awesome.

-----

Well, today was our Z Club dyno day and I finally got the chance to strap the Slicktop to the rollers again to see what, if any, power increase there was due to the installation of the JWT lightweight flywheel, pressure plate and clutch.

Click the image for full size.

Here are the 3 pull dyno results.

Compared to the last dyno, a gain of 3.39 whp and 1.68 wtq

Compared to the bone stock dyno, a gain of 38.46 whp and 19.95 wtq

I'm really not terribly pleased with the results. I was hoping to break the 210 mark today and came up a little short. I can't, however, say that I'm suprised with the result. Though many manufacturers claim that you gain all sorts of power with a lightweight flywheel, what they are all about is the speed of revving and general engine response. You're really lucky to pick up a large gain (in the NA world, that is more than 5whp) with any mod let alone one that is only reducing drivetrain loss.

So, here's to effectively putting more power down to the wheels; all 3 horsepower of it.

[WOLFANATOR13]

1 piece aluminum drive shaft next to free up drive train loss and shave a few more pounds?

[tg]

I'm curious to see what the gains would be over stock if the engine wasn't pulling timing at stock run. Either way, 208 to the ground is great, probably at about 250 to the flywheel.

[Honad]

I'm curious to see what the gains would be over stock if the engine wasn't pulling timing at stock run. Either way, 208 to the ground is great, probably at about 250 to the flywheel.

I wager that I lost a good 5-10whp with the little bit of timing pull in the original dyno. The other NA, which is completely healthy made 180whp stock.

At 169, that's a 24% drivetrain loss if the car was making 222 at the crank, which, well, impossible that it was losing that much. No f'ing way it was running perfect. I have always figured 18% for a pretty healthy older car in stock format with no drivetrain modifications. Which would mean 182whp would be just about right for a perfectly running NA. Give or take a few ponies due to weather, humidity and the slew of other things which could cause the dyno numbers to be a hair off.

As I see it, the Slicktop is now somewhere between 245-255 bhp which is certainly not too shabby. We'll see for sure once I finally get a few more 1/4 mile times in Branson this year. Anything in the 14 second range will satisfy me for sure, but it would certainly be nice to be able to put the smack down on a few of the early model 350Z's.